CN1967937B

CN1967937B - Multifrequency antenna

Info

Publication number: CN1967937B
Application number: CN 200510095783
Authority: CN
Inventors: 苏纹枫
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2012-05-23
Anticipated expiration: 2025-11-18
Also published as: CN1967937A

Abstract

The invention discloses a multi-frequency antenna, which is used for notebook computers or other portable terminals, and has a radiating part, a grounding part and a connecting part. The radiating part is made of metal sheet, which includes a first radiating part, a second radiating part and a third radiating part; the connecting part connects the radiating part and the grounding part; the multi-frequency antenna also has a feeder connection The entrance part is arranged on the radiation part, so that the feeder can be connected to the multi-frequency antenna conveniently and accurately.

Description

Multifrequency antenna

[technical field]

The invention relates to a kind of multifrequency antenna, refer to a kind of multifrequency antenna that is used on notebook computer or other portable terminal device especially.

[background technology]

Along with the high speed development of mobile communication, People more and more hopes to be equipped with a notebook computer or other portable terminal device just can insert Internet whenever and wherever possible.Satisfied people's this demand to a certain extent based on the wireless-access mode of GPRS (General Packer RadioService, GPRS) and WLAN (Wireless Local Area Network, WLAN).GPRS is the wireless network that a wide area covers, and its message transmission rate is probably at 30Kbps～50Kbps, and WLAN is the wireless network that a local covers, and its message transmission rate can reach 11Mbps (based on the 802.11b technology).People cooperate portable terminal devices such as notebook computer through selecting the different radio network interface card, insert Internet whenever and wherever possible.Because the WLAN message transmission rate can reach 11Mbps; So (hotel, airport, coffee-house, commercial center, conference and exhibition center) provides public WLAN high-speed data service at some hot zones; Automatically switch after leaving hot zones, connect through maintenance networks such as GPRS.

At present, wireless local area is mostly based on bluetooth (Bluetooth) technical standard or IEEE802.11 series standard.The working band of antenna falls within 2.4GHz in the Bluetooth technology standard, and the working band of antenna falls within 2.4GHz and 5GHz respectively in the IEEE802.11 series technique standard.And the GPRS working band falls within 900MHz, 1800MHz and 1900MHz, and therefore, the antenna in the notebook computer is the multifrequency antenna that is applied to above-mentioned frequency band mostly at present.

(Planar Inverted-F Antenna PIFA) is a kind of small size antenna that is usually used in mobile communication terminal to planar inverted " F " type antenna.Its characteristics are that size is little, and are in light weight, can effectively reduce occupation space and manufacturing cost, and impedance matching is good, is easy to realize double frequency or multifrequency.It another very important characteristic is exactly that it has horizontal polarization and perpendicular polarization concurrently, is applicable to the place that electromagnetic environment is comparatively complicated.

Yet the general closed planar feedback point position of " F " type antenna is that the feeder line on-position is difficult to confirm.Announce planar inverted " F " the type antenna shown in CN 2541958 Y numbers like Chinese patent; When inserting, its feeder line is difficult to accurately insert on theory feedback point; If deviation is arranged slightly; Will cause the change of antenna feed impedance, thereby cause antenna feed impedance and feed line impedance not to match, and influence the service behaviour of antenna.

Consider above-mentioned drawback, the above-mentioned antenna of necessary improvement.

[summary of the invention]

The object of the present invention is to provide a kind of multifrequency antenna, it has accurate feeder line access point.

For realizing above-mentioned purpose, multifrequency antenna of the present invention is reached through following technical scheme:

A kind of multifrequency antenna is to be used for notebook computer or other portable terminal device, and it has: Department of Radiation, grounding parts and connecting portion, and said Department of Radiation is to be processed by sheet metal; Said connecting portion is to connect said Department of Radiation and grounding parts; This multifrequency antenna also has feeder line access portion, is the lamellar body that a bending is extended, and it is located on the Department of Radiation, makes feeder line can conveniently and insert multifrequency antenna exactly.

A kind of multifrequency antenna is to be used for notebook computer or other portable terminal device, and it has: Department of Radiation, grounding parts and connecting portion, said Department of Radiation are that sheet metal is processed; Said connecting portion is to connect said Department of Radiation and grounding parts; This multifrequency antenna also has feeder line access portion, is the lamellar body that a bending is extended, and the junction that it is located at Department of Radiation and connecting portion makes feeder line can conveniently and insert multifrequency antenna exactly.

Compared with prior art, the antenna advantage that the present invention processes is: owing to have feeder line access point exactly, make the feeder line of multifrequency antenna to insert multifrequency antenna in zero deflection ground.

[description of drawings]

Fig. 1 is the stereogram of multifrequency antenna first execution mode of the present invention.

Fig. 2 is the stereogram of multifrequency antenna second execution mode of the present invention.

[embodiment]

Shown in Figure 1 is the multifrequency antenna 10 of first embodiment of the invention, and in this execution mode, multifrequency antenna 10 comprises Department of Radiation 2, grounding parts 4, connects connecting portion 3, feeder line access portion 1 and the antenna installation portion 5 of Department of Radiation 2 and grounding parts 4.

Department of Radiation 2 comprises and is positioned at conplane first Department of Radiation 21, second Department of Radiation 22 and the 3rd Department of Radiation 23.First Department of Radiation 21 links to each other with second Department of Radiation, 22 1 ends and is positioned at same straight line.The 3rd Department of Radiation 23 comprises from the junction of first Department of Radiation 21 and second Department of Radiation 22 first radiation arm 231 that extends perpendicular to first Department of Radiation 21 and second Department of Radiation 22 and terminal along extending perpendicular to first radiation arm 231 and being positioned at second radiation arm 232 of the same side of first radiation arm 231 with first Department of Radiation 21 from first radiation arm 231.

Grounding parts 4 comprises and is positioned at conplane first grounding parts 41 with Department of Radiation 2 and perpendicular to bigger second grounding parts 42 of first grounding parts 41.

Connecting portion 3 roughly is " Z " type; And be positioned at same plane with the Department of Radiation 2 and first grounding parts 41, the second portion 32 that it comprises the first 31 that is connected with second radiation arm, 232 junctions with first radiation arm 23 1 of the 3rd Department of Radiation 23, the third part 33 that is connected with first grounding parts 41 and connects first 31 and third part 33.

Feeder line access portion 1 is perpendicular to the extended rectangle lamellar body in plane, Department of Radiation place, and it is located at the junction of first Department of Radiation 21, second Department of Radiation 22 and the 3rd Department of Radiation 23.This feeder line access portion 1 is after punching press on the same metal plate, to bend to form with antenna 10 other parts again, and it is positioned at theory feedback point of antenna, fixed-site.Be difficult to when the feeder line of general antenna inserts insert exactly on theory feedback point, very little deviation all can cause the change of antenna feed impedance and theoretical input impedance, thereby antenna feed impedance and feed line impedance are not matched, and influences the antenna service behaviour.The feeder line access portion 1 of multifrequency antenna 10 of the present invention can make feeder line (not shown) be linked into theoretical feedback point exactly, thereby makes multifrequency antenna 10 reach optimum working performance.

Two installation portions 5 are positioned at same plane with the Department of Radiation 2 and first grounding parts 41, and it extends upward perpendicular to second grounding parts 42 from the two ends of second grounding parts, 42 1 sides respectively.Two installation portions 5 are equipped with perforate 51 and pass with convenient screw rod (not shown) with convenient locking multifrequency antenna 10.

Shown in Figure 2 is the multifrequency antenna 10 ' of second execution mode of the present invention.In this execution mode, multifrequency antenna 10 ' comprises Department of Radiation 2 ', grounding parts 4 ', connects connecting portion 3 ', feeder line access portion 1 ' and the antenna installation portion 5 ' of Department of Radiation 2 ' and grounding parts 4 '.

Department of Radiation 2 ' comprises and is positioned at conplane first Department of Radiation 21 ', second Department of Radiation 22 ' and the 3rd Department of Radiation 23 '.First Department of Radiation 21 ' comprises second radiation arm 212 ' that first radiation arm 211 ' reaches perpendicular to first radiation arm 211 '.Second Department of Radiation 22 ' comprises with shared first radiation arm 211 ' of first Department of Radiation 21 ' and perpendicular to first radiation arm 211 ' and with second radiation arm 212 ' and is positioned at reverse the 3rd radiation arm 223 ' that extends of same straight line.The 3rd Department of Radiation 23 ' is terminal along extending perpendicular to first radiation arm, 211 ' direction and being positioned at the same side of first radiation arm 211 ' with first Department of Radiation 21 ' from first radiation arm 211 '.

Grounding parts 4 ' comprises and is positioned at conplane first grounding parts 41 ' with Department of Radiation 2 ' and perpendicular to bigger second grounding parts 42 ' of first grounding parts 41 '.

Connecting portion 3 ' roughly is " Z " type, and it comprises the first 31 ' that is connected with first radiation arm, 211 ' junction with the 3rd Department of Radiation 23 ', the third part 33 ' that is connected with first grounding parts 41 ' and connects first 31 ' and the second portion 32 ' of third part 33 '.

Feeder line access portion 1 ' is perpendicular to the extended rectangle lamellar body in Department of Radiation 2 ' plane, place, and it is located at the junction of the 3rd Department of Radiation 23 ', first radiation arm 211 ' and connecting portion 3 '.This feeder line access portion 1 ' just forms in antenna is produced, and it is positioned at the theory feedback point of antenna, fixed-site.Be difficult to when the feeder line of general antenna inserts insert exactly on theory feedback point, very little deviation all can cause the change of antenna feed impedance and theoretical input impedance, thereby antenna feed impedance and feed line impedance are not matched, and influences the antenna service behaviour.The feeder line access portion 1 ' of multifrequency antenna 10 ' of the present invention can make feeder line be linked into theoretical feedback point exactly, thereby makes multifrequency antenna 10 ' reach optimum working performance.

Two installation portions 5 ' are positioned at same plane with the Department of Radiation 2 ' and first grounding parts 41 ', and it extends upward perpendicular to second grounding parts 42 ' from the two ends of second grounding parts, 42 ' one side respectively.Two installation portions 5 ' are equipped with perforate 51 ' and pass with the convenient screw rod (not shown) that locks multifrequency antenna 10 '.

Claims

1. A multi-frequency antenna is used for notebook computers or other portable terminals, which has: a radiation part, a ground part and a connection part, the radiation part is made of sheet metal; the connection part is to connect the radiation part part and grounding part; it is characterized in that: the radiating part includes a first radiating part, a second radiating part and a third radiating part, the first radiating part and the second radiating part are located on the same straight line, and the multi-frequency antenna It also includes a feeder access part that allows the feeder to be easily and accurately connected to the multi-frequency antenna. The feeder access part is a rectangular metal sheet perpendicular to the plane where the radiation part is located, and is located on the first and second The junction of the radiation part and the third radiation part.

2. The multi-frequency antenna according to claim 1, wherein the feeder access portion and other parts of the multi-frequency antenna are formed from the same metal sheet by punching and then bending.

3. The multi-frequency antenna according to claim 1, wherein the third radiating portion comprises a first radiating portion extending perpendicular to the first and second radiating portions from the junction of the first and second radiating portions. An arm and a second radiating arm extending from the end of the first radiating arm perpendicular to the first radiating arm.

4. The multi-frequency antenna according to claim 1, characterized in that: the connecting part is roughly in the shape of a "Z", which includes a first part parallel to the first and second radiating parts, a third part combined with the grounding part. part and the second part connecting the first part and the third part.

5. A multi-frequency antenna is used for a notebook computer or other portable terminals, and has a radiation part, a ground part and a connection part, and the radiation part is made of sheet metal; the connection part is to connect the radiation part and the ground part; It is characterized in that: the radiating part includes first, second and third radiating parts, and the first and second radiating parts share the first radiating arm; The feeder access part of the multi-frequency antenna, the feeder access part is a rectangular metal sheet perpendicular to the plane where the radiating part and the connecting part are located, and it is arranged at the combination of the first radiating arm, the third radiating part and the connecting part , the first radiating part further includes a second radiating arm, the second radiating part further includes a third radiating arm, and the second radiating arm and the third radiating arm are located on the same straight line.

6. The multi-frequency antenna according to claim 5, wherein the feeder access portion and other parts of the multi-frequency antenna are formed from the same metal sheet by punching and then bending.

7. The multi-frequency antenna according to claim 5, characterized in that: the second radiating arm and the third radiating arm are perpendicular to the first radiating arm, and the third radiating part is perpendicular to the first radiating arm from the end of the first radiating arm The direction in which the radial arms extend.

8. The multi-frequency antenna according to claim 7, characterized in that: the connecting part comprises a first part whose one end is connected to the radiating part and is located on the same line as the third radiating part, a third part whose one end is connected to the ground part, and The second part that connects the first part and the third part.