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CN1229893C - Antenna device and portable terminal - Google Patents

Antenna device and portable terminal Download PDF

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Publication number
CN1229893C
CN1229893C CN00818025.3A CN00818025A CN1229893C CN 1229893 C CN1229893 C CN 1229893C CN 00818025 A CN00818025 A CN 00818025A CN 1229893 C CN1229893 C CN 1229893C
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CN
China
Prior art keywords
antenna
portable telephone
mentioned
substrate
billboard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN00818025.3A
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Chinese (zh)
Other versions
CN1415126A (en
Inventor
东海林英明
今西康人
深泽彻
大岭裕幸
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of CN1415126A publication Critical patent/CN1415126A/en
Application granted granted Critical
Publication of CN1229893C publication Critical patent/CN1229893C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Telephone Set Structure (AREA)

Abstract

天线装置(3a)具有基片(11)和设置于基片(11)上的电长度为(λ/2)×A(A是整数)的天线(21)。天线(21)包含位于从端部(21d)的电长度大约为λ/4+(λ/2)×B(B是整数)的部分的板形天线(21b)和连接于板形天线(21b)的折线天线(21a，21c)。

Figure 00818025

The antenna device (3a) comprises a substrate (11) and an antenna (21) provided on the substrate (11) and having an electrical length of (λ/2)×A (A is an integer). The antenna (21) includes a plate antenna (21b) located at a portion having an electrical length of approximately λ/4+(λ/2)×B (B is an integer) from an end portion (21d), and meander line antennas (21a, 21c) connected to the plate antenna (21b).

Figure 00818025

Description

Antenna assembly and portable terminal device
Technical field
The present invention relates to antenna assembly and portable terminal device, particularly be built in the antenna assembly in the portable telephone and adopt the portable telephone of this antenna assembly.
Background technology
Current, we know the antenna that sends reception usefulness as portable telephone, are the interior antennas of shell that is built in portable telephone.
These antenna according to its different characteristic, can be categorized as linear antenna and billboard antenna.
Figure 20 is a kind of built-in portable telephone floor map of dipole antenna of existing linear antenna.With reference to Figure 20, existing portable telephone 1x has shell 10 and receives and keeps antenna assembly 3x in shell 10.Antenna assembly 3x has substrate 11 and is arranged at dipole antenna 121 on the substrate 11.Dipole antenna 121 has the antenna part 121a and the 121b of two polyline shapeds, and antenna part 121a and 121b are connected to distributing point 12.The electrical length of dipole antenna 121 is λ/2.
In when conversation, the bearing of trend of such dipole antenna 121 (direction of representing with arrow 125) approximately becomes 30 to spend angles with vertical direction.Hence one can see that, and dipole antenna 121 can reduce the polarized wave loss to the vertical polarized wave (vertically polarized wave) on ground when conversation.
Figure 21 is the radiation diagram of expression existing dipole antenna shown in Figure 20.As shown in figure 21, under the situation of upright portable telephone 1x, particularly the electrical length at antenna is under the situation of λ/2 * A (A is an integer), and 0. 134 of the radiation diagram of representing with solid line 131 and 132 becomes horizontal plane.Therefore, the problem that exists gain to diminish.
Figure 22 be between the electrical length of the antenna in the existing dipole antenna of expression and the CURRENT DISTRIBUTION on the antenna oscillator between the curve chart of relation.As shown in figure 22, be the dipole antenna of λ/2 to electrical length, be the part of λ/4 in the electrical length of antenna, promptly there is the maximum of CURRENT DISTRIBUTION in the middle body of antenna.Problem is that this part contacts with hand easily, if catch to touch antenna gain is reduced.
Figure 23 is the plane graph of the portable telephone of existing billboard antenna.With reference to Figure 23, portable telephone 1y have shell 10 and receive and keep in shell 10 antenna assembly 3y.Antenna assembly 3y has substrate 11 and is arranged at billboard antenna 122 on the substrate 11.Billboard antenna 122 is connecting distributing point 12.
Such billboard antenna 122 is to be easy to send simultaneously reception involves horizontal polarized wave to the perpendicular polarization on ground antenna.And because near the electric current the distributing point disperses, so compare with linear antenna, the reduction amount that advantage gains when being the finger Contact antenna is little.
But billboard antenna 122 problems are, when for example adopting patch antenna, are about λ because need the overall circumference sum of antenna, so the size of antenna becomes greatly, portable telephone 1y self also becomes big.
Therefore, the objective of the invention is to, provide to send simultaneously to receive perpendicular polarization and involve horizontal polarized wave for addressing the above problem, small-sized and when conversation gain reduce little antenna assembly and portable terminal device.
Summary of the invention
Possess according to antenna assembly of the present invention: substrate and be arranged at the antenna that on-chip electrical length is about (λ/2) * A (A is an integer).Antenna comprises: being positioned at from the electrical length of end approximately is the billboard antenna parts and the linear antenna element that is connected in the billboard antenna parts of the part of λ/4+ (λ/2) * B (B is an integer).
In the antenna assembly that constitutes like this, linear antenna element can vertically polarized wave or the either party of horizontal polarized wave be the main reception that sends, the billboard antenna parts can horizontal polarization involve the vertically polarized wave both sides and send reception.Its result can send the reception perpendicular polarization simultaneously and involve horizontal polarized wave, becomes the antenna of high-gain.
And, because the electrical length of antenna is approximately (λ/2) * A (A is an integer), so be approximately the electrorheological of part of λ/4+ (λ/2) * B (B is an integer) in the electrical length from antenna end big.But, owing to be provided with the billboard antenna parts in this part, therefore can scattered current.For this reason, both made under the situation of this part of contact such as finger the also reduction that can reduce to gain.
And then, because therefore with only antenna package vinculum shape antenna element is compared with the situation of billboard antenna parts formation antenna, can make antenna miniaturization.
In a word, the present invention had both made when conversation also has high gain, can guarantee gain when making terminal upright, and small-sized antenna can be provided.
And it is desirable to, linear antenna element comprises at least a kind that selects in the colony that is made up of unipole antenna, zigzag antenna, broken line antenna and helical aerials.
And then it is desirable to, substrate has the first type surface of conductivity.Antenna further comprises the link that is connected with the first type surface of substrate.At this moment, because antenna is connected in the first type surface of conductivity, so on substrate, form mirror image.Its result is because the electrical length of antenna approximately is 2 times of physical length of antenna, so can shorten the physical length of antenna.Therefore, can make the antenna assembly miniaturization.
And it is desirable to, substrate has the side surface of first type surface and this first type surface that links to each other, and antenna is arranged on the side surface.At this moment, because antenna is not set on the first type surface, so on first type surface, can place other device etc.
Possess shell and the antenna assembly that is built in shell according to portable terminal device of the present invention.Antenna assembly comprises substrate and is arranged at the antenna that on-chip electrical length is (λ/2) * A (A is an integer) approximately.Antenna comprises that being positioned at from the electrical length of end approximately is the billboard antenna parts and the linear antenna element that is connected in the billboard antenna parts of the part of λ/4+ (λ/2) * B (B is an integer).
The portable terminal device of Gou Chenging like this, linear antenna element can vertically polarized wave or the either party of horizontal polarized wave be the main reception that sends, the billboard antenna parts can horizontal polarization involve the vertically polarized wave both sides and send reception.Its result can send the reception perpendicular polarization simultaneously and involve horizontal polarized wave, becomes the portable terminal device with high-gain aerial device.
And, because the electrical length of antenna is approximately (λ/2) * A (A is an integer), so approximately be that the electrorheological of part of λ/4+ (λ/2) * B (B is an integer) is big in electrical length from antenna end.But, because in this part, be provided with the billboard antenna parts, therefore can scattered current.For this reason, both made under the situation of this part of contact such as finger the also reduction that can reduce to gain.
And then, because antenna package vinculum shape antenna element, compare with the situation that only constitutes antenna with the billboard antenna parts, can make antenna miniaturization.
And, because antenna assembly is built in the shell,, antenna assembly tails off so being subjected to the influence of human body.Its result can prevent the reduction that gains.
Description of drawings
Fig. 1 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 1.
Fig. 2 is the side view of the portable telephone that direction is seen shown in the arrow II from Fig. 1.
Fig. 3 is the curve chart that concerns between the antenna electrical length of the portable telephone shown in presentation graphs 1 and Fig. 2 and the electric current.
Fig. 4 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 2.
Fig. 5 is the side view of the portable telephone that direction is seen shown in the arrow V from Fig. 4.
Fig. 6 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 3.
Fig. 7 is the side view of the portable telephone seen of the direction shown in the arrow VII from Fig. 6.
Fig. 8 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 4.
Fig. 9 is the side view of the portable telephone seen of the direction shown in the arrow IX from Fig. 8.
Figure 10 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 5.
Figure 11 is the side view of the portable telephone seen of the direction shown in the arrow XI from Figure 10.
Figure 12 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 6.
Figure 13 is the side view of the portable telephone seen of the direction shown in the arrow XIII from Figure 12.
Figure 14 is the process chart that Y-Z surface radiation figure is measured in expression.
Figure 15 is the process chart that Y-Z surface radiation figure is measured in expression.
Figure 16 is the process chart that Y-Z surface radiation figure is measured in expression.
Figure 17 is the curve chart of the Y-Z surface radiation figure of the relevant product of the present invention of expression.
Figure 18 is the curve chart of the Y-Z surface radiation figure of the existing portable telephone shown in expression Figure 20.
Figure 19 is the curve chart of the Y-Z surface radiation figure of the existing portable telephone shown in expression Figure 23.
Figure 20 is the existing built-in portable telephone floor map of dipole antenna.
Figure 21 is the figure of the portable telephone radiation diagram shown in expression Figure 20.
Figure 22 is the curve chart that concerns between the electrical length of the antenna of expression shown in Figure 20 and the CURRENT DISTRIBUTION on the antenna oscillator.
Figure 23 is the portable telephone floor map with existing billboard antenna.
Execution mode
Following with reference to the relevant embodiment of the present invention of figure explanation.
(execution mode 1)
Fig. 1 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 1.Fig. 2 is the side view of the portable telephone seen of the direction shown in the arrow II from Fig. 1.With reference to Fig. 1 and Fig. 2, portable telephone 1a has shell 10 and is built in antenna assembly 3a in the shell 10 as can be known.Antenna assembly 3a possesses substrate 11 and is arranged on the substrate 11, and electrical length is the antenna 21 of (λ/2) * A (A is an integer).Antenna 21 has as being positioned at from the billboard antenna 21b of the billboard antenna parts of the part of the about λ/4+ of the electrical length of end 21d (λ/2) * B (B is an integer) and broken line antenna 21a and the 21c that conduct is connected in the linear antenna element of billboard antenna 21b.
Substrate 11 adheres to copper etc. on specified insulating substrate the high metal of conductivity forms.Wherein, the metal that forms on the insulating substrate also can be replaced as the material that equal conductivity is arranged with copper.Substrate 11 extends to longitudinal direction, roughly is rectangle.Minor face extension along substrate 11 is provided with antenna 21.
Antenna 21 have be positioned at middle body as the billboard antenna 21b of billboard antenna parts and be positioned at the broken line antenna 21a and the 21c of the linear antenna element of conduct of its both sides.Billboard antenna 21b is connected with distributing point 12. Broken line antenna 21a and 21c and billboard antenna 21b are arranged on the first type surface 11a of substrate 11 jointly, and 11a is relative with first type surface.Billboard antenna 21b is by distributing point 12, and do not have illustrated radio parts to be connected.As the people portable telephone 1a is placed under the state of conversation in one's ear, the bearing of trend of antenna 21 approximately becomes 30 ° (30 ° of drift angles) to vertical direction.Antenna 21 is built in the shell 10.
Fig. 3 is the curve chart that concerns between the electrical length of antenna of portable telephone 1a of expression Figure 1 and Figure 2 and the electric current.With reference to Fig. 3, regional 221a and 221c are the zones that broken line antenna 21a and 21c exist, the zone that regional 221b exists corresponding to billboard antenna 21b.As shown in Figure 3 as can be known, in the big regional 221b of electrorheological, because be provided with billboard antenna 21b, so suppressed the increase of current value in this part.
In the portable telephone 1a and antenna assembly 3a that constitute like this, at first, broken line antenna 21a and 21c send a side who receives vertical or horizontal polarized wave, and billboard antenna 21b sends the both sides that receive vertical and horizontal polarized wave.Its result can send the both sides that receive vertical and horizontal polarized wave, and the reduction that can suppress to gain.And, as shown in Figure 3,,,, also can prevent the reduction that gains so both made finger wait this part of contact because current value is reduced at the middle body of antenna.
And then, owing to antenna 21 is built in the shell 10, so antenna 21 can directly not contact with human body.Its result, the influence that antenna 21 is subjected to human body tails off, and can prevent that the gain that is caused by human body from reducing.
(execution mode 2)
Fig. 4 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 2.Fig. 5 is the side view of the portable telephone seen of the direction shown in the arrow V from Fig. 4.With reference to Fig. 4 and Fig. 5, in the portable telephone 1b and antenna assembly 3b of foundation embodiment of the present invention 2, be provided with antenna 21 as the sky end face 11b of substrate 11 side surfaces, this point is different with the antenna assembly 3a shown in the execution mode 1.Antenna 21 is connected with distributing point 12.
To the antenna assembly 3b and the portable telephone 1b of such formation, at first same effect is arranged with antenna assembly 3a shown in the execution mode 1 and portable telephone 1b.And then because antenna 21 is arranged on day end face 11b, so situation about being arranged on the first type surface 11a with antenna 21 in the execution mode 1 is compared, first type surface 11a goes up available area and becomes big.Its result makes the assembly that can settle other on the first type surface 11a.
(execution mode 3)
Fig. 6 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 3.Fig. 7 is the side view of the portable telephone seen of the direction shown in the arrow VII from Fig. 6.With reference to Fig. 6 and Fig. 7, in the portable telephone 1c and antenna assembly 3c of foundation embodiment of the present invention 3, the linear antenna element of antenna 23 is made of helical antenna 23a and 23c, and this point is different with portable telephone 1a shown in the execution mode 1 and antenna assembly 3a.Helical antenna 23a and 23c constitute with helical form, and its end is connected in billboard antenna 21b.Helical antenna 23a and 23c are provided with the eddy current shape, and discord substrate 11 directly contacts.
Portable telephone 1c has shell 10 and is built in antenna assembly 3c in the shell 10.Antenna assembly 3c possesses substrate 11 and is arranged on the substrate 11, and electrical length is the antenna 23 of (λ/2) * A (A is an integer).Antenna 23 have as be positioned at from the electrical length of end 23d approximately be λ/4+ (λ/2) * B (B is an integer) part the billboard antenna parts billboard antenna 21b and be connected in the broken line antenna 23a and the 23c of the linear antenna element of conduct of billboard antenna 21b.
The antenna assembly 3c of such formation and antenna assembly 3a and the portable telephone 1c shown in portable telephone 1c and the execution mode 1 there is same effect.
(execution mode 4)
Fig. 8 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 4.Fig. 9 is the side view of the portable telephone seen of the direction shown in the arrow IX from Fig. 8.With reference to Fig. 8 and Fig. 9, in the antenna assembly 3d of foundation embodiment of the present invention 4, antenna 24 is to be made of zigzag antenna 24a and 24c and billboard antenna 21b, and this point is different with the antenna 21 shown in the execution mode 1.
That is, portable telephone 1d has shell 10 and is built in antenna assembly 3d in the shell 10.Antenna assembly 3d possesses substrate 11 and is arranged on the substrate 11, and electrical length is the antenna 24 of (λ/2) * A (A is an integer).Antenna 24 have as be positioned at from the electrical length of end 24d approximately be λ/4+ (λ/2) * B (B is an integer) part the billboard antenna parts billboard antenna 21b and be connected in the zigzag antenna 24a and the 24c of the linear antenna element of conduct of billboard antenna 21b.
The antenna assembly 3d of such formation and antenna assembly 3a and the portable telephone 1a shown in portable telephone 1d and the execution mode 1 there is same effect.
(execution mode 5)
Figure 10 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 5.Figure 11 is the side view of the portable telephone seen of the direction shown in the arrow XI from Figure 10.
With reference to Figure 10 and Figure 11, portable telephone 1e has shell 10 and is built in antenna assembly 3e in the shell 10.Antenna assembly 3e possesses substrate 11 and is arranged on the substrate 11, and electrical length is the antenna 25 of (λ/2) * A (A is an integer).It approximately is the link 25a of billboard antenna parts of the part of λ/4+ (λ/2) * B (B is an integer) that antenna 25 has as being positioned at from the electrical length of end 25d, with billboard antenna 25b, reach the zigzag antenna 25c that is connected in the linear antenna element of conduct of link 25a by billboard antenna 25b.
Antenna 25 is arranged on the first type surface 11a of substrate 11.The zigzag antenna 25c that antenna 25 has the link 25a that is connected in first type surface 11a and the billboard antenna 25b that is connected in link 25a and is connected in billboard antenna 25b.Link 25a is made of billboard antenna, connects first type surface 11a and billboard antenna 25b with conductivity.And link 25a is connected in distributing point 12.Billboard antenna 25b and first type surface 11a are opposed, and its end is connected in link 25a, and other end is connected in zigzag antenna 25c.Because link 25a is connected with the first type surface 11a with conductivity, so also can form the mirror image of antenna on first type surface 11a.In view of the above, the length of the physics of antenna 25 is (λ/4) * A (A is an integer), and electrical length is (λ/2) * A (A is an integer).
To the antenna assembly 3e and the portable telephone 1e of such formation, at first same effect is arranged with antenna assembly 3a shown in the execution mode 1 and portable telephone 1a.And then, because the length of antenna 25 physics diminishes, so effect with antenna assembly 3e and portable telephone 1e miniaturization is arranged.
Wherein, in the present embodiment, connect zigzag antenna 25c on the billboard antenna 25b, also can connect unipole antenna, broken line antenna and zigzag antenna on the palette shape antenna 25b.
(execution mode 6)
Figure 12 is the portable telephone floor map that has according to the antenna assembly of embodiment of the present invention 6.Figure 13 is the side view of the portable telephone seen of the direction shown in the arrow XIII from Figure 12.With reference to Figure 12 and Figure 13, portable telephone 1f has shell 10 and is built in antenna assembly 3f in the shell 10.Antenna assembly 3f possesses substrate 11 and is arranged on the substrate 11, and electrical length is the antenna 26 of (λ/2) * A (A is an integer).It approximately is the billboard antenna 26c of billboard antenna parts of the part of λ/4+ (λ/2) * B (B is an integer) that antenna 26 has as being positioned at from the electrical length of end 26e, with the broken line antenna 26a and the 26d of the linear antenna element of conduct that is connected in billboard antenna 26c, and link 26b.
Billboard antenna 26c is connected in distributing point 12, is connected to link 26b simultaneously.The first type surface 11a that link 26b connects billboard antenna 26c and has conductivity.Broken line antenna 26a and 26d, and billboard antenna 26c, all opposed with first type surface 11a.Antenna 26 is connected with first type surface 11a on link 26b.Therefore, on first type surface 11a, form the mirror image of antenna 26.The length of the physics of antenna 26 is (λ/4) * A (A is an integer), and electrical length is (λ/2) * A (A is an integer).At the middle body of antenna 26, promptly in the antenna 26, billboard antenna 26c is arranged at the current value the best part.
The antenna assembly 3f of such formation and antenna assembly 3f and the portable telephone 1e shown in portable telephone 1f and the execution mode 5 there is same effect.
Below, concrete effect of the present invention is described.
From Figure 14 to 16 are figure that the operation of the radiation diagram on the Y-Z face is measured in expression.With reference to Figure 14, at first be ready to the portable telephone 1a (Fig. 1) shown in the execution mode 1.The electrical length of antenna 21 is made as λ/2.Billboard antenna 21b is disposed at from the position of electrical length λ/4 of the end 21d of antenna.At this moment, Y direction as shown in Figure 1 (bearing of trend of the minor face of substrate 11) and Z direction (bearing of trend on the long limit of substrate 11) are in a horizontal plane, place portable telephone 1a on desktop 150.And directions X becomes the vertical direction of representing with arrow 140.Desktop 150 can be to rotating with the direction shown in the arrow R.
Portable telephone 1a is positioned under the state of such desktop 150, the wireless transmission receiving-member from the substrate 11, according to specified output, by antenna assembly 3a, tranmitting frequency is the radio wave of 1.95GHz.At this moment, desktop 150 is rotated to the direction shown in the arrow R.In view of the above, from the radio wave of antenna assembly 3a emission shown in the arrow 151.Use to measure the electric field strength of measuring these radio waves with antenna 160, and this radio wave is obtained with the vertically polarized wave of direction shown in the arrow V with the electric field strength of the horizontal polarized wave of direction shown in the arrow H.
With reference to Figure 15, placed dipole antenna 170 on the desktop 150.To this dipole antenna 170, be provided with distributing point 171 at middle body, distributing point 171 is connecting coaxial cable 172.Coaxial cable 172 is connecting specified wireless transmission receiving-member.Dipole antenna 170 and extend with the vertical direction almost parallel shown in the arrow 140.Desktop 150 is rotated to the direction shown in the usefulness arrow R, simultaneously the wireless transmission receiving-member is given the same output of output of the antenna assembly 3a shown in Figure 14, give dipole antenna 170, and use shown in the arrow 152 from dipole antenna 170 emissions, frequency is the radio wave of 1.95GHz.Launch the radio wave of representing with arrow 152 from dipole antenna 170 in view of the above.This radio wave is the vertically polarized wave of the direction represented with arrow V.Use and measure the electric field strength that determines this radio wave with antenna 160.
With reference to Figure 16, the wireless transmission receiving-member is offered the same output of output of antenna assembly 3a, offer dipole antenna 170, and from dipole antenna 170 emissions with shown in the arrows 153, frequency is the radio wave of 1.95GHz.This radio wave is the horizontal polarized wave of the direction represented with arrow H.Use and measure the electric field strength of obtaining this radio wave with antenna 160.
The data that obtain in the operation based on Figure 14～shown in Figure 16 are obtained the radiation diagram according to antenna assembly of the present invention.Its result is illustrated among Figure 17.
Among Figure 17, solid line 301, in the operation shown in Figure 15 from the electric field strength of the vertically polarized wave of dipole antenna 170 emission, the gain shown in expression Figure 14 from the vertically polarized wave of the radio wave of antenna assembly 3a emission.This gain is calculated according to following formula.
(gain)=20 * log 10(come from the electric field strength of the vertically polarized wave of antenna assembly 3a/come from the electric field strength of the vertically polarized wave of dipole antenna 170)
Dotted line 302, in the operation shown in Figure 16 from the electric field strength of the horizontal polarized wave of dipole antenna 170 emission, the gain shown in expression Figure 14 from the horizontal polarized wave of the radio wave of antenna assembly 3a emission.This gain is calculated according to following formula.
(gain)=20 * log 10(come from the electric field strength of the horizontal polarized wave of antenna assembly 3a/come from the electric field strength of the horizontal polarized wave of dipole antenna 170)
As shown in Figure 17, according among the antenna assembly 3a of the present invention, the gain of vertically polarized wave is relatively to equate in all directions.And, the gain of horizontal polarized wave in all directions also about equally.Therefore, can send the various polarized waves of reception.
Secondly, with adopting the portable telephone 1x of existing antenna assembly 3x shown in Figure 20, according to the operation identical with operation shown in Figure 14, with Y-axis and Z axial horizontal direction, X-axis is parallel with vertical direction, is placed on the desktop 150.In this state, make desktop 150 to the rotation of the direction shown in the arrow R, by antenna assembly 3x, tranmitting frequency is the radio wave of 1.95GHz simultaneously.At this moment, the wireless transmission receiving-member is offered the identical output of the output of antenna assembly 3a, offer antenna assembly 3x.Use and measure perpendicular polarization wave component and the horizontal polarization wave component that determines the radio wave of this emission with antenna 160.This existing antenna radiation pattern as shown in figure 18.Among Figure 18, solid line 311 is directed to the electric field strength of the vertically polarized wave of measuring with operation shown in Figure 15, and expression is according to operation shown in Figure 14, from the gain of the electric field strength of the perpendicular polarization wave component of the radio wave of antenna assembly 3x emission.This gain is calculated according to following formula.
(gain)=20 * log 10(from the electric field strength of the vertically polarized wave of antenna assembly 3x /) from the electric field strength of the vertically polarized wave of dipole antenna 170
Dotted line 312 is, for the electric field strength of the horizontal polarized wave of measuring with operation shown in Figure 16, according to operation shown in Figure 14, from the gain of the electric field strength of the horizontal polarization wave component of the radio wave of antenna assembly 3x emission.This gain is calculated according to following formula.
(gain)=20 * log 10(from the electric field strength of the horizontal polarized wave of antenna assembly 3x /) from the electric field strength of the horizontal polarized wave of dipole antenna 170
As shown in Figure 18, in existing kind, very little of the gain of Y direction vertically polarized wave.
Secondly, adopt the portable telephone 1y of existing antenna assembly 3y shown in Figure 23, according to the identical operation of operation shown in Figure 14, with Y-axis and Z axial horizontal direction, X-axis is parallel with vertical direction, and portable telephone 1y is placed on the desktop 150.In this state, make desktop 150 to the rotation of the direction shown in the arrow R, by antenna assembly 3y, tranmitting frequency is the radio wave of 1.95GHz simultaneously.At this moment, the wireless transmission receiving-member is offered the identical output of the output of antenna assembly 3a, offer antenna assembly 3y.Use and measure perpendicular polarization wave component and the horizontal polarization wave component that determines the radio wave of this emission with antenna 160.This existing antenna radiation pattern as shown in figure 19.Among Figure 19, solid line 321 is directed to the electric field strength of the vertically polarized wave of measuring with operation shown in Figure 15, and expression is according to operation shown in Figure 14, from the gain of the electric field strength of the perpendicular polarization wave component of the radio wave of antenna assembly 3y emission.This gain is calculated according to following formula.
(gain)=20 * log 10(from the electric field strength of the vertically polarized wave of antenna assembly 3y /) from the electric field strength of the vertically polarized wave of dipole antenna 170
Dotted line 322 is, for the electric field strength of the horizontal polarized wave of measuring with operation shown in Figure 16, according to operation shown in Figure 14, from the gain of the electric field strength of the horizontal polarization wave component of the radio wave of antenna assembly 3y emission.This gain is calculated according to following formula.
(gain)=20 * log 10(from the electric field strength of the horizontal polarized wave of antenna assembly 3y /) from the electric field strength of the horizontal polarized wave of dipole antenna 170
As shown in Figure 18, if adopt billboard antenna, the radio wave that comes from any direction can send reception with comparalive ease.
But this billboard antenna 122 has following problem, and the whole girth sum of antenna is λ, and portable telephone is maximized.
Secondly, measure the human right hand or left hand and held gain under the state that above-mentioned portable telephone 1a, 1x and 1y converse.At this moment, suppose that the gain when the human left hand is held portable telephone 1a and conversed is 0dB, to each sample, the gain when having measured with the right hand or left hand-held set.Its result is as shown in table 1.
Table 1
Sample Gain during conversation (dB)
Left side hand-held set Right hand-held set
1a 0 -0.03
1x -2.63 -0.09
1y -3.84 +0.72
As shown in Table 1, to the portable telephone 1a of goods of the present invention, when holding portable telephone with the right hand with left hand, the variation of gain is all very little.To portable telephone 1x, under the situation with the right hand or left hand-held set, gain all reduces than the present invention goods.And to portable telephone 1y, than the present invention's raising that gains, gain reduces significantly under the situation of machine but hold leftward under the situation of right hand-held set.Therefore, the variation of gain becomes big.In view of the above as can be known, no matter goods of the present invention hold portable telephone with the right hand or left hand, and the variation of its gain is all very little.
And then, obtained with portable telephone 1a, 1x and 1y near the electric field strength of the maximum the antenna.Suppose that maximum field intensity on the portable telephone 1a is that the maximum field intensity on the portable telephone 1x is 130% under 100% the situation, it is 68% that portable telephone 1y goes up maximum electric field strength.Therefore, compare with portable telephone 1x with goods of the present invention, the concentrated of electric field relaxed, so both made under near the situation people's Contact antenna, electric field is subjected to artificial influence and also diminishes.Its result can prevent to reduce gain.
Wherein, in above-mentioned whole execution modes, can adopt unipole antenna as linear antenna.In order to make the portable telephone miniaturization, in execution mode 1 to 4, the electrical length that it is desirable to antenna 21,23,24 is λ/2.
Utilizability on the industry
According to antenna assembly of the present invention and portable telephone, can in the field of the portable telephone of built-in aerial, utilize.

Claims (8)

1.一种天线装置，具备：1. An antenna device comprising: 基片，substrate, 天线，设置于上述基片上并且电长度为(λ/2)×整数A；The antenna is arranged on the above-mentioned substrate and has an electrical length of (λ/2)×integer A; 上述天线包含：The above antennas include: 板形天线部件，位于从端部开始的电长度为λ/4+(λ/2)×整数B的部分，A plate-shaped antenna element located at a portion whose electrical length from the end is λ/4+(λ/2)×integer B, 线形天线部件，连接到上述板形天线部件。A wire-shaped antenna part is connected to the above-mentioned plate-shaped antenna part. 2.根据权利要求1所述的天线装置，其中，2. The antenna device according to claim 1, wherein, 上述线形天线部件是单极天线、曲折天线、折线天线及螺旋天线中的一种。The linear antenna part is one of a monopole antenna, a meander antenna, a zigzag line antenna and a helical antenna. 3.根据权利要求1所述的天线装置，其中，3. The antenna device according to claim 1, wherein, 上述基片具有导电性的主表面，The above-mentioned substrate has a conductive main surface, 上述天线还包含连接到上述基片的上述主表面的连接部件。The above-mentioned antenna further includes a connection member connected to the above-mentioned main surface of the above-mentioned substrate. 4.根据权利要求1所述的天线装置，其中，4. The antenna device according to claim 1, wherein, 上述基片具有主表面和相连该主表面的侧表面，上述天线设置于上述侧表面上。The above-mentioned substrate has a main surface and a side surface connected to the main surface, and the above-mentioned antenna is provided on the above-mentioned side surface. 5.一种便携终端，具备：5. A portable terminal, having: 外壳，shell, 天线装置，置于上述外壳内；an antenna assembly placed within said housing; 上述天线装置包含：The above-mentioned antenna device includes: 基片，substrate, 天线，设置于上述基片上并且电长度为(λ/2)×整数A；The antenna is arranged on the above-mentioned substrate and has an electrical length of (λ/2)×integer A; 上述天线包含：The above antennas include: 板形天线部件，位于从端部开始的电长度为λ/4+(λ/2)×整数B的部分，A plate-shaped antenna element located at a portion whose electrical length from the end is λ/4+(λ/2)×integer B, 线形天线部件，连接于上述板形天线部件。The linear antenna part is connected to the above-mentioned plate-shaped antenna part. 6.根据权利要求5所述的便携终端，其中，6. The portable terminal according to claim 5, wherein, 上述线形天线部件是单极天线、曲折天线、折线天线及螺旋天线中的1种。The linear antenna member is one of a monopole antenna, a meander antenna, a zigzag line antenna, and a helical antenna. 7.根据权利要求5所述的便携终端，其中，7. The portable terminal according to claim 5, wherein, 上述基片具有导电性的主表面，The above-mentioned substrate has a conductive main surface, 上述天线还包含连接到上述基片的上述主表面的连接部件。The above-mentioned antenna further includes a connection member connected to the above-mentioned main surface of the above-mentioned substrate. 8.根据权利要求5所述的便携终端，其中，8. The portable terminal according to claim 5, wherein, 上述基片具有主表面和相连该主表面的侧表面，上述天线设置于上述侧表面上。The above-mentioned substrate has a main surface and a side surface connected to the main surface, and the above-mentioned antenna is provided on the above-mentioned side surface.
CN00818025.3A 2000-10-31 2000-10-31 Antenna device and portable terminal Expired - Fee Related CN1229893C (en)

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Application Number Priority Date Filing Date Title
PCT/JP2000/007637 WO2002039542A1 (en) 2000-10-31 2000-10-31 Antenna device and portable terminal

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CN1229893C true CN1229893C (en) 2005-11-30

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JP2004186931A (en) 2002-12-03 2004-07-02 Ngk Spark Plug Co Ltd Antenna compatible with multiple frequency bands

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JPS5757618U (en) * 1980-09-20 1982-04-05
US5898411A (en) * 1996-02-26 1999-04-27 Pacific Antenna Technologies, Inc. Single-element, multi-frequency, dipole antenna
JPH10107535A (en) * 1996-09-27 1998-04-24 Murata Mfg Co Ltd Surface mount antenna
JP3580654B2 (en) * 1996-12-04 2004-10-27 京セラ株式会社 Common antenna and portable radio using the same
JPH10303637A (en) * 1997-04-25 1998-11-13 Harada Ind Co Ltd Automotive TV antenna device
FR2772517B1 (en) * 1997-12-11 2000-01-07 Alsthom Cge Alcatel MULTIFREQUENCY ANTENNA MADE ACCORDING TO MICRO-TAPE TECHNIQUE AND DEVICE INCLUDING THIS ANTENNA
JP3467752B2 (en) * 1998-03-18 2003-11-17 Ｎｅｃトーキン株式会社 Mobile communication terminal and its antenna device
US6288680B1 (en) * 1998-03-18 2001-09-11 Murata Manufacturing Co., Ltd. Antenna apparatus and mobile communication apparatus using the same

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WO2002039542A1 (en) 2002-05-16

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