CN1376322A

CN1376322A - Antenna device for radio communication device

Info

Publication number: CN1376322A
Application number: CN00813335A
Authority: CN
Inventors: D·杨松; A·泽伊纳利
Original assignee: Orgaon GmbH
Current assignee: Laird Technologies AB
Priority date: 1999-09-24
Filing date: 2000-09-20
Publication date: 2002-10-23
Anticipated expiration: 2020-09-20
Also published as: KR20020032615A; SE515228C2; KR100703937B1; SE9903459D0; WO2001022527A1; SE9903459L; CN1184719C; AU7818900A

Abstract

Antenna device with improved near field radiation characteristics, comprising a dielectric support means (2) mountable on a radio communication device (5) for use by a user and a first radiating element (1,1 ', 18) operable in a first frequency band, the support means and the first radiating element having a common central longitudinal axis (3), the first radiating element being supported by the support means and having first and second ends being a first feeding point (6, 6', 19) and an open end (7,7 ', 20), respectively, and being arranged at least partly around said central longitudinal axis (3), said antenna device comprising an elongated conductive or semi-conductive means (8, 8') supported by said support means (2) and extending substantially parallel to said longitudinal axis (3), said conductive or semi-conductive means having first and second ends, the second end is a point (9,9 ') for grounding when said support device is mounted on said radio communication device, and the first end is an open end (10, 10').

Description

The antenna assembly that is used for radio communications set

The invention technical field:

The present invention relates to exterior antenna, relate in particular to a kind of antenna assembly with improved near-field thermal radiation characteristic, and the radio communications set that comprises this antenna assembly.

Background of invention:

Modern mobile phone is done more and more forr a short time, and therefore the reciprocation between antenna, telephone set and user becomes than before more important.The antenna of size all know to(for) the phone performance is crucial, sees the content (AntennaEngineering Handbook, McGrawHil published in 1993) of antenna works handbook the 6th chapter that Johnsson shows.Usually also require it to support two or more frequency bands now.

Mobile phone exchanges wireless signal with a wireless base station usually.Do not carry out and for example phone is in user's the hand, in the pocket or during waist, some handshaking can occur during standby when having to call out.When calling out, occur handshaking certainly, and phone is placed on usually between user's the ear and mouth, or still in user's pocket or at waist, is connected with microphone with earphone.

The effective antenna of fundamental sum that is used for mobile phone is a unipole antenna, and it comprises having the line whip and the telephone circuit plate that plays corresponding earthing conductor effect that length is the part of wavelength.Length is being applied in many fogey phone of half-wavelength in these antenna, and provides very low feed current (corresponding to high impedance), has weak current in the time of on phone body or the circuit board.This class antenna produces very low electromagnetic field on one's body at phone directory, and is therefore very little with reciprocation near the hand of phone etc.But this size beguine is much bigger according to the antenna size of modern telephone design, so for maneuverable purpose, need much smaller antenna usually.

Yet, because the necessary radiation of the miniature antenna power (because requirement of telephone system) identical with big antenna, so the curtage on this miniature antenna (type that depends on antenna) will be bigger.Especially like this when very little when compare this physical dimension with wavelength.Therefore must bigger with possible reciprocation near the various objects of this antenna, also certainty is bigger along the electric current of this telephone set or circuit board.This electric current is added to all screens in the telephony environment usually, and its electromagnetic field that means this antenna during call model will be serious with the reciprocation of user's body.If phone is near user's health, then this reciprocation also will occur in the standby process usually.

When the reciprocation that relates between telephone antenna and its direct environment of living in, the electromagnetic near field of antenna is more prior than the far field.In this reciprocation, have at least two different amounts to consider.

One is the power loss in environment, comprises for example loss in desk, pocket, hand, head and other tissue.This loss is called nearly phone power obstacle (POP), measures with watt.Another amount is specific absorption rate (SAR), and it is relevant with different countries, is limited to the power loss of systemic each order position on various countries' legislation and the regulations qualification SAR, and general quantitative is each quantitative systemic watt mean value.For example, U.S. FCC (Federal Communications Committee) require SAR in the bodily tissue of each gram less than 1.6mW.Telephone system requires a definite power level (the 2W peak value and the 0.25W mean value that for example are used for GSM).Different antennae presents different SAR with phone for same radiant power.According to standard (FCC, CENELEC and other standard), SAR obtains maybe can calculating at an artificial head internal measurement.

Target of the present invention provides and realizes that low POP is so that save the antenna of power consumption.Certainly, the target that has simultaneously of the present invention is to satisfy SAR regulations and any other suitable legislation thereof that may require at country variant.But use therein term POP tool has plenty of technical but not jural connotation.Therefore should not obscure with amount SAR of different nature.

Because the power density properties of SAR, transmit with a less antenna configuration and more may present high POP than the equal-wattage of macrostructure antenna.Use the phone of miniature antenna especially true for great majority.So SAR scheme of the development requires of phone optimization.Bigger antenna structure produces lower SAR value usually, but the modern telephone designing requirement does not support to increase size.Antenna efficiency is a key character, and efficient is relevant to a certain extent with SAR, and the SAR of high value obviously means the POP of high value.

Can suspect that the antenna structure (by distance or symmetry) of isolating with the phone body will have better SAR performance, with regard to as many phones owing to presenting the maximum SAR in the somewhere of this phone body along the electric current of phone body.

Be described to " near field " and " far field " (see for example Krauss shows " antenna " McGraw Hill 1988 publish) traditionally around the electromagnetic field of any antenna structure, they have following border (r be apart from and λ is a wavelength).

Idle near field: r＜λ

Transition band: λ＜r＜2D2/ λ

Far field: r＞2D2/ λ

D is the full-size (" diameter ") of this irradiation structure, and for a phone (scope of D from λ/3 to λ), this restriction means " transition band " of common disappearance.For the present invention, be important to note that this near field and this far field normally differ greatly, have a transition band in the centre.The zone of high SAR value (i.e. the high field of close this phone) may appear at the different directions (in this far field) with intense radiation.

Done a large amount of trials so that reduce near field towards a user.Some trials are intended to be used to increase the apparatus and method of the distance between this active antenna and the user, promptly are used to realize the apparatus and method of directivity, yet other attempts adopting different types of screening arrangement.For example patent application CA 2,088, and 724, DE 19518125 and DE 19600041 disclose all screening arrangements, comprises two dimensional panel, it has shielded the radiation towards the user.This screening arrangement can be installed in its outside with respect to this antenna, is positioned at antenna originally or be installed on the casing of this mobile phone on one's body, or can be integrally formed with this antenna or this telephone casing.

United States Patent (USP) 5,335,366 disclose a kind of screening arrangement, comprise an absorber, reflector or integrally are arranged on stopper on the antenna, for example a coating of axle along the longitudinal.

United States Patent (USP) 5,666,125 comprise an antenna, have a longitudinal axis along this antenna on this antenna one side and place elongated screening arrangement.An elongated member is in opposition side and this day line parallel placement, and described parts help radiation is redirected.

WO 94/28595 describes a kind of antenna assembly, comprises a dielectric cylinder, and design thereon has four vertical extent bars, and bar is that antenna element and other bar are can ground connection or be retained in the passive interconnecting member of open-circuit condition.These parts can be operated and guide and/or reflect this radiation.Existing people mentions by the passive component that uses ground connection and realizes high directivity.And described file discloses two other component arrangement, and this device has an active element and passive component of ground connection.

United States Patent (USP) 5,826,201 disclose a kind of vertical flagpole antenna and a passive flagpole antenna, their placements parallel to each other.But, do not know that this passive component whether should ground connection or be connected to this flagpole antenna, or it should not be retained in open-circuit condition.

The problem of these prior art devices comprises complicated, the expensive or poor mechanical robustness of performance difficulty of serious bad change, design that the volume that takies is big, weight big, POP reduces deficiency, far-field radiation characteristic.So far be far from obtaining practicality from many so-called " SAR reduces device " at the Modern Small antenna assembly that is used for lightweight mobile phone.And, all do not utilize the big difference between far field and the near field in the middle of the above-mentioned patent document of quoting as proof fully, and estimate that they just attempt to be created in the far field of the low value on some direction, do not mean the near field that produces low value.

Brief summary of the invention:

An object of the present invention is to provide an antenna assembly, it comprises: can be installed in can be for a dielectric bracing or strutting arrangement on the radio communications set of user's use, with first radiant element that can in first frequency band, work, this bracing or strutting arrangement and this first radiant element have a common center longitudinal axis, and this first radiant element is supported by described bracing or strutting arrangement, it has is respectively first and second ends of first feed point and an open end, they are configured to center at least partially described center longitudinal axis, and this antenna assembly has been avoided some problem relevant with prior art at least.

In this regard, specific purposes of the present invention provide such antenna assembly, and it represents improved near-field thermal radiation characteristic, i.e. the POP value of Jiang Diing, and/or provide and compared with the prior art can be used in compacter design.The main means that realize this target are to create one to be different in essence in the near field in far field.

But further purpose of the present invention is to realize integration in existing antenna assembly design, still keeps the various performances in the existing antenna assembly design simultaneously.

Further aim of the present invention provides simple, an in light weight and cheap antenna assembly.

Further object of the present invention provides the efficient height, installs easily and reliably, the antenna assembly of durable mechanical performance is arranged still after long-time the use especially.

These purposes of the present invention are to realize by an antenna assembly that requires in the claim 1.

An advantage of the invention is and reduced the POP value significantly, still be kept for the geometry of undersized antenna assembly simultaneously.

Further feature and advantage of the present invention will obviously be found out from the description of the following embodiment of the invention.

Brief Description Of Drawings:

Can understand the present invention more fully from detailed description below in conjunction with the embodiment of the invention of accompanying drawing 1-2, this accompanying drawing and to describe only be that mode with example provides, because of rather than limitation of the present invention.

Fig. 1 a illustrates the front view according to the antenna assembly of the first embodiment of the present invention, antenna is contained in and only shows on the local mobile phone, Fig. 1 b and 1c side-looking is shown respectively and the installation overlooked the schematic diagram of antenna assembly, end view also comprises the part of this phone user's head, and Fig. 1 d, 1e and 1f show one of described antenna assembly conduction or semiconductive device and two optional radiant elements respectively.

Fig. 2 a illustrates the front view of antenna assembly according to a second embodiment of the present invention, it is contained in and only shows on the local mobile phone, Fig. 2 b and 2c show same side-looking and the vertical view that the device of antenna has been installed respectively, end view also comprises the part of this phone user's head, and Fig. 2 d and 2e show one of described antenna assembly conduction or semiconductive device and two optional radiant elements respectively.

The detailed description of embodiment:

In describing subsequently, for the purpose that illustrates rather than limit, provide concrete detailed description, for example at specific hardware, application, technology etc., so that complete understanding of the present invention is provided.But those skilled in the art obviously still can put into practice the present invention as can be known in other embodiment that breaks away from these detailed descriptions.In other example, the details of the method for knowing, communication protocol, device and circuit is described and is omitted, so that explanation of the present invention does not have unnecessary details.

With reference to figure 1a-c, first radiant element is a form with a tortuous radiation of conductors element 1 at this, and it is supported by a dielectric cylinder hollow frame 2, makes radiant element and this framework have the common central longitudinal axis shown in chain-dotted line 3.Framework 2 is installed on the casing 4 of hand-portable mobile phone 5 and stretches out.Select this complications element 1 make in the position on the chassis 4 in standby or telephone call should complications conductor 1 radiation within first frequency band, send effectively and receive at least at the diverse location of selecting by the operator.Framework 2 among Fig. 1 a-c is in a side of casing 4 operative tips that raise up.Tortuous element 1 has first and second ends, and they are respectively first distributing point 6 and open end 7.By being installed in an electrical connector 15 within the framework 2 shown in Fig. 1 c, distributing point 6 is connected to presenting/the receiving circuit (not shown) of mobile phone 5.Therefore, there are a hole or analog structure to be produced in the framework 2, to be implemented in the electrical connection between radiant element 1 and the electrical connector 15.

According to the present invention, long and narrow conduction or semiconductive device are to be supported by described framework 2 with 8 the form of going between here.Lead-in wire 8 is roughly parallel with the described longitudinal axis 3 and have first and second ends, and they are respectively earth point 9 and open ends 10 that is used to make mobile phone 5 ground connection.Preferably be grounded, or be connected to the contact that other is considered to ground connection by the circuit board (not illustrating) that earth point 9 is connected to mobile phone 5.

Framework 2, radiant element 1 and going between 8 further covered by deielectric-coating 11 (among Fig. 1 a-c by dotted line indication), and film 11 provides electric insulation and provides mechanical protection to mobile phone 5 parts that may be exposed in the various environment.

In situation about illustrating, framework 2 has circular cross section.But other design is contained in the present invention, for example ellipse, rectangle and square cross section.This framework can further be designed to the form of a curvilinear structures, and wherein the longitudinal axis by this frame center is crooked.

Conduction or semiconductive lead-in wire 8 in fact on the direction of the longitudinal axis 3 the whole length along tortuous conductor element 1 extend, and roughly be supported on the part of the outermost radial outside of framework 2 by framework 2, promptly be supported on the outer surface of framework 2, shown in Fig. 1 c.Can select, in the outer surface of framework 2, provide and wherein can place a lead-in wire groove of 8 or the like (not shown).In the present embodiment, in the use of mobile phone 5, radially on user's 12 direction, lead-in wire 8 further supports (seeing Fig. 1 b) by framework 2.That is, lead-in wire 8 is positioned in the front side 13 of framework 2.

In addition, lead-in wire in addition or conducting element can be placed on this antenna assembly.Specifically, one second conduction or semiconductive lead-in wire (not shown) can extend and be grounded or be retained as open circuit along the longitudinal axis 3.

Fig. 1 d illustrates the lead-in wire 8 that takes out from framework 2, conduction or semiconductive lead-in wire that it is preferably made by for example copper, stainless steel or polymer.The general size of lead-in wire 8 is the length of 20mm-80mm, and cross section is 0.1～1 * 0.1～1mm ²But at the design of each mobile phone, especially at each Frame Design and radiant element design, lead-in wire 8 can be made design and the size that realizes optimum performance (for example about gain and near-field thermal radiation).Conduction or semiconductive lead-in wire 8 can replace with a conduction or semiconductive lead, band, figure or analog.

Usually this conductive lead wire 8 to be designed to the electric current of its transmission suitable with the electric current that meanders transmits in the present invention, and it is suitable and be the opposite near field of part at least on phase place therefore to produce amplitude.By suitably selecting parameter, might significantly reduce the near field.Lead-in wire 8 has not good radiance, and the influence that its influence for far field (radiation) generation is compared to the near field generation is little.

Fig. 1 e illustrates one of tortuous radiant element 1 may shape, and this element is by carrying out etching or the printed conductor figure is made on the dielectric fexible film 14 of planar structure.Radiant element begins to extend from film 14 distributing point 6 on one side, and film has one and is the shape of rectangle substantially, and radiant element extends to (comprising parallel portion and turning) free end 7 of film 14 opposite edges with bending repeatedly.This planar structure is done distortion, and feasible wherein film 14 becomes tubulose or forms the structure of a cylinder part shown in Fig. 1 a-c at least, thereby forms single tortuous radiant element.This realizes by tortuous element 1 is arched upward around framework 2, makes the angle of its relative longitudinal axis 3 alternately increase and reduce.This structure is compact, high durability is provided and can be used in various antenna applications occasions.In addition, tortuous element can be made into arch and be installed in the inside surface (not shown) of hollow frame 2.

In addition, can not use fexible film 14, and make this complications radiant element be installed in other carrier or be directly installed on the framework 2 as carrier.

Tortuous radiant element 1 can have other geometrical configuration, for example changes 90 ° at a diagonal angle complications composition on the film 14 or situation about illustrating relatively in the plane of film 14.

Term " complications " is used to describe this radiant element, because its optimum shape normally.Any those skilled in the art will recognize that by the conductor that produces an extension makes that it typically is 1/4th of wavelength can both produce equivalent result, adoptable shape will be unlimited, and for example connecting line figure (as at the pattern 18 as shown in Fig. 1 f) has a distributing point 19 and a free end 20 respectively.Specifically, the antenna pattern that is operated in high frequency band only have 1-2 crooked.

And 8 (or other conduction or the semiconductive devices) that go between in other structure can be arranged on integratedly on the film 14 and (not illustrate among the figure), 8 also can form by etching or printing thereby go between.

Radiant element 1 be preferably in around the longitudinal axis 3 less than in 360 ° the angular range with tangential extension, i.e. in scope, extending as clear expression among Fig. 1 c less than a whole circle.Conduction or semiconductive lead-in wire 8 are preferably in the angular range that does not have radiant element 1 and extend.

And described framework can further be supported an impedance matching circuit (not shown), and this circuit is connected to the distributing point 6 of radiant element 1 in the circuit of mobile phone 5.

Consider that subsequently Fig. 2 a-e describes the second embodiment of the present invention, among this embodiment except conduction or semiconductive lead-in wire 8 ' and tortuous radiant element 1 ', 1 " separately the design and position, this embodiment is identical with first embodiment.All other parts have the reference signs identical with Fig. 1 a-e among Fig. 2 a-e.

In the present embodiment, lead-in wire 8 ' be supported on a side by framework 2, between the operating period of mobile phone 5,12 (the seeing Fig. 2 b) that this side is in the user over against opposition side.That is lead-in wire 8 ' be positioned at the dorsal part 16 of framework 2.

And, near lead-in wire 8 ' its first end (9 '), have horizontal expansion part 16.Can clearly see among Fig. 2 d, described horizontal expansion part is extended to front side 13 with the tangential direction of described center longitudinal axis 3 dorsal part 16 from framework 2, promptly arches upward around framework 2, so that be connected to the ground connection of mobile phone 5.In addition, lead-in wire 8 ' can promptly lead directly to framework 2 in radial expansion, framework 2 in this case is provided with suitable hole.

In the others that for example relate to size and material etc., lead-in wire 8 ' can comprise various features as in last embodiment, describing.

With reference now to Fig. 2 e,, its illustrated two tortuous elements 1 ', 1 " be located at same film 14 ' on, they may be tuned to two different frequencies, realize the work of this antenna assembly in two other frequency bands of branch.These yuan distributing point 6 ', 6 " be fed electric current, distributing point 6 in situation about illustrating ', 6 " overlap.Described distributing point may be coupled to the circuit of mobile phone 5 by an impedance-matching device (not illustrating).

Tortuous element more than two can be provided together, can be more than the operation in two frequency bands so that realize, or the operation in the wideer frequency band of the frequency band that obtains than two elements.Though in Fig. 2 e, be described as a plane configuration of bringing into play function well, best two tortuous elements 1 ', 1 " reference of fexible film 14 ' form of the present invention before the column structure described of an embodiment.Also for example can adopt the optional design of the radiant element of describing among the embodiment in front.

The third embodiment of the present invention (not illustrating among the figure) comprises a conduction or semiconductive lead-in wire as front embodiment, but it is radially outwards supported by described framework and toward the direction, and this direction is equipped with in the radio communications set process of this framework with direction towards the precalculated position of user's head in use and becomes a predetermined angle.Angular range that should be predetermined can still be more preferably from 2 ° to 10 ° from 0 ° to 360 °, and preferably from 5 ° to 10 °.

If be counted as around the field of this phone basic spherical function and, then be appreciated that adopt the present invention the reason of the extensive reduction field that can realize.Such as J.E.Hansen as described in the work " measurement of sphere near field antenna " (Peter Peregrinus 1988 publish), the outside field of any divergent structure (resembling a phone in free space) can both with a spherical function and accurately describe." outside " means the outside of any sphere that contains this structure, and wave function can (not describe in detail) and write as Sn, and (), wherein r is a radial distance to m for r, θ, and θ is apart from the angle on summit and is the azimuth, all according to spherical coordinate.N and m are the exponential sum exponent numbers that two dimension is provided with, and m is never greater than n.If r fixes, Sn then, (r, θ ) form a class basis of a two-dimentional Fourier series to m, if comprise abundant item, can be used for describing any wave mode.

Two important conclusions that obtain from this spherical function theory are (referring to previously mentioned quoting the described content of Hansen):

If this sphere has radius a and wave number is k (=27 π/λ, λ are wavelength), then have the Sn of η＞1.5ka, m is very little to the influence in this far field.Therefore a limited number of Sn, m can with good accuracy be used to describe away from radiation field.For the little phone less than 1GHz, n=2 may be too big, this means the field (n=1 is corresponding to dipole) of a similar dipole.

Under the bigger situation of n, Sn, (r, θ ) can sharply reduce so that increase r m, up near kr＞n.This means, even (i.e. " when taking on the telephone ") has the current pattern of a complexity under the less situation of r, big distance (kr＞＞will not changing of n) locating.

Use this device, can find a CURRENT DISTRIBUTION on a radiant body, it provides a quite weak field and does not influence radiation field in big distance at small distance on some direction at least.Have been found that the add ons on antenna can provide required near field improvement and change the far field with exceeding.

To the actual test of the modern mobile phone that has the fixed outer zigzag antenna provided 40% or more SAR reliably reduce, and some test shows reduces, and to surpass 90% be the target of a reality.

Therefore, reduced POP significantly by adopting the present invention, and utilized model machine to obtain minimum value according to the first embodiment of the present invention.

Obviously the present invention can change according to multimode.These variations should not be considered to depart from the scope of the present invention.All tangible for those skilled in the art these improvement all are included within the scope of appending claims.

Claims

1. antenna assembly with improved near-field thermal radiation characteristic, comprise a dielectric bracing or strutting arrangement (2) that can be installed on the radio communications set (5) that can use for the user, with first radiant element (1 that can in first frequency band, work, 1 ', 18), described bracing or strutting arrangement and described first radiant element have a common center longitudinal axis (3), and described first radiant element is supported by described bracing or strutting arrangement, it is respectively first distributing point (6 that this first radiant element has, 6 ', 19) and an open end (7,7 ', 20) first and second ends, and place around described center longitudinal axis (3) at least in part, it is characterized in that it has by described bracing or strutting arrangement (2) supports and is roughly parallel to the described longitudinal axis (3) extends a long and narrow conduction or semiconductive device (8,8 '), described conduction or semiconductive device have first and second ends, when described bracing or strutting arrangement is installed on the described radio communications set, this first and second end is respectively a point (9 that is used for ground connection, 9 ') and an open end (10,10 ').

2. device as claimed in claim 1 is characterized in that: described conduction or semiconductive device (8,8 ') roughly extend on the direction of the described longitudinal axis (3) along whole length of described first radiant element (1,1 ', 18).

3. device as claimed in claim 1 or 2 is characterized in that: described conduction or semiconductive device (8 ') extend along the tangential and/or radial direction with respect to described center longitudinal axis (3) near first end (9 ') of described conduction or semiconductive device.

4. as any described device of claim 1-3, it is characterized in that: described conduction or semiconductive device (8,8 ') having a concrete radially extension that limits, it is quite little that described radially extension is compared with radially extending of described bracing or strutting arrangement (2).

5. the device described in claim 4, it is characterized in that: described conduction or semiconductive device (8,8 ') roughly are supported on the position of the outermost radial outside of described bracing or strutting arrangement by described bracing or strutting arrangement (2).

6. as any described device of claim 1-5, it is characterized in that: described conduction or semiconductive device (8,8 ') having a concrete tangential extension that limits, described tangential extension is quite little with comparing around a whole circle of described longitudinal axis.

7. device as claimed in claim 6, it is characterized in that: described conduction or semiconductive device (8) are radially supported to the outside of the described longitudinal axis (3) by described bracing or strutting arrangement (2), and between operating period with radio communications set (5) that this bracing or strutting arrangement (2) have been installed towards a precalculated position of user's cephalad direction.

8. device as claimed in claim 6, it is characterized in that: described conduction or semiconductive device are radially outwards supported by described bracing or strutting arrangement and on a certain direction, this direction is in use angled towards the direction that be somebody's turn to do in a certain precalculated position of user's head with this radio communications set that bracing or strutting arrangement is installed, described angular range is from 2 ° to 10 °, and preferably from 5 ° to 10 °.

9. device as claimed in claim 6, it is characterized in that: described conduction or semiconductive device (8 ') are radially outwards supported by described bracing or strutting arrangement (2), and deviate from a precalculated position of user's head (12) between the operating period of the radio communications set that this bracing or strutting arrangement (2) are installed (5).

10. as any described device of claim 1-9, it is characterized in that: described conduction or semiconductive device constitute a conduction or semiconductive lead-in wire (8,8 '), lead, band or figure.

11. any described device as claim 1-10, it is characterized in that: when described bracing or strutting arrangement (2) is installed on the described radio communications set (5), described conduction or semiconductive device (8,8 ') first end (9,9 ') be configured to be connected to the circuit board of described radio communications set (5), thus be grounded.

12. any described device as claim 1-11, it is characterized in that: it comprises another one is long and narrow at least conduction or semiconductive device, and this conduction or semiconductive device support and are roughly parallel to the described longitudinal axis (3) by described bracing or strutting arrangement (2) and extend.

13. any described device as claim 1-12, it is characterized in that: have one can with one second frequency band that described first frequency band separates in one second radiant element of working (it is respectively first and second ends of second distributing point (6 ") and open end (7 ") that 1 "); described second radiant element has with the common longitudinal axis (3) of described bracing or strutting arrangement (2) and described first radiant element (1 ') and by described bracing or strutting arrangement and supported, wherein said second radiant element have.

14. any described device as claim 1-13 is characterized in that: each radiant element (1,1 ', 1 ", 18) have a curved structure.

15. any described device as claim 1-14 is characterized in that: each radiant element (1,1 ', 1 ", 18) all on tangential direction, to extend with respect to the described longitudinal axis (3), described tangential direction comprises positive and negative angle direction.

16. any described device as claim 1-15, it is characterized in that: described radiant element (1,1 ', 1 ", 18) around the described longitudinal axis (3) less than 360 ° angular range in; promptly extend in the scope less than a whole circle; and described conduction or semiconductive device (8,8 ') do not have described radiant element (1,1 '; 1 ", 18) angular range in extend.

17. as any described device of claim 1-16, it is characterized in that: this bracing or strutting arrangement (2) has a bracing or strutting arrangement surface, and this radiant element (1,1 ', 1 ", 18) conductive pattern of formation on described bracing or strutting arrangement surface.

18. any described device as claim 1-16, it is characterized in that: this bracing or strutting arrangement (2) has a bracing or strutting arrangement plane, and this radiant element (1,1 ', 1 "; 18) be formed in fexible film (14,14 ') and go up the conductive pattern that forms, described fexible film is installed on the surface of bracing or strutting arrangement.

19. device as claimed in claim 18 is characterized in that: described conductive pattern is imprinted on the described fexible film (14,14 ').

20. as claim 18 or 19 described devices, it is characterized in that: described bracing or strutting arrangement (2) roughly has cylindrical shape, and described fexible film (14,14 ') has the shape of crust of a part that roughly is cylinder or cylinder.

21. any described device as claim 1-20 is characterized in that: described bracing or strutting arrangement constitutes a framework (2).

22. any described device as claim 1-21, it is characterized in that: described bracing or strutting arrangement (2) also supports an impedance matching circuit, this impedance matching circuit be used to make described radiant element (1,1 ', 1 ", 18) impedance phase with described radio communications set (5) mates.

23. any described device as claim 13-22 is characterized in that: described bracing or strutting arrangement (2) also supports at least one can be at the 3rd radiant element of one the 3rd band operation.

24. a radio communications set that uses for the user is characterized in that: it comprises the antenna assembly one of any according to claim 1-23.