CN1816941A - Compact diversity antenna - Google Patents
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- CN1816941A CN1816941A CN200480007359.6A CN200480007359A CN1816941A CN 1816941 A CN1816941 A CN 1816941A CN 200480007359 A CN200480007359 A CN 200480007359A CN 1816941 A CN1816941 A CN 1816941A
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- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—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
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation
Abstract
A diversity radio antenna includes a ground substrate and two elongated antenna elements. The antenna elements each extend between respective opposing ends thereof in a plane parallel to and spaced from the ground substrate. An excitation electrode is interposed between the respective ends. A ground connector switch is configured to selectively connect and disconnect the ground substrate to the antenna elements for controlling radiation beam pattern and polarisation diversity of the antenna. The ground connector switch is configured to selectively connect the antenna elements to the ground substrate for adapting the antenna to a circularly-polarised radio wave, or to disconnect one of the antenna elements from the ground substrate for adapting the antenna to a linearly-polarised radio wave.
Description
Invention field
The present invention relates generally to be used for the antenna of radio telecommunication terminal, specifically, relate to the small size antenna that is designed to be included in the portable terminal and can transmits and receives diversity.
Background technology
Since 20 end of the centurys, cellular industry has had great development in the whole world.From initial analogue system, for example by standard A MPS (Advanced Mobile Phone Service) and the defined system of NMT (NMT), it develops on the standard of the digital solutions that almost all concentrates on the cellular radio network system in recent years, for example D-AMPS (for example, defined in EIA/TIA-IS-54-B and IS-136) and GSM (global system for mobile communications).Different digital transmission scheme is used for different systems, for example time division multiple access (TDMA) or code division multiple access (CDMA).At present, cellular technology is entering the so-called third generation, can provide to be better than the above-mentioned several advantages of second generation digital system in the past.Comprise in these advantages and will provide the bandwidth of increase, can transmit more complicated data effectively.Third generation mobile system is called as UMTS (universal mobile telephone system) in Europe, be called CDMA2000 in the U.S., implements to a certain extent in Japan.And, generally believe that first generation personal communication network (PCN) (PCN) (their use and to be easy to carry and can to stay at home, office, the street, the first-class low-cost pocket cordless telephone of making a phone call and listening to phone of car) will be provided by the cellular carrier of for example using Digital Cellular System infrastructure of future generation.
Done a large amount of effort and made littler terminal, many achievements are by means of the miniaturization of electronic unit and the exploitation of more effective battery.More than two decades only, communication system move towardss numeral from simulation, and the while communication terminal has developed into the mini phone of today from the briefcase size.Nowadays, many manufacturers provide has various abilities and professional pocket terminal, and for example packet-oriented transmission and multi radio frequency band cover.In order to reduce the volume of portable radio terminal, realized built-in aerial recent years.Usually wish to have the invisible antenna of consumer now.Nowadays use different types of chip aerial (patches), have or do not have parasitism (parasitic) element.The modal built-in aerial that uses in mobile phone at present comprises so-called planar inverted-F antenna (PIFA).Why adopt this name to be and looked like to tilt the 90 alphabetical F that spend because the profile of antenna looks.This antenna needs distributing point and ground connection to connect.If near include one or several parasitic antennas, they can or ground connection or isolate with ground insulation.
The development of electronics not only makes the miniaturization of end fitting become possibility, and the advanced function that can realize of terminal and professional complexity and diversity are also in continuous increase.The exploitation of new transmission plan, third generation mobile system close at hand, and the 4th generation that expection may be after 10 years provide to wireless communication terminal and have transmitted the more possibility of advance data (for example real-time video).For the good performance that transmits and receives is provided, just need diversity aerial system or MIMO (multiple-input and multiple-output) antenna system in multi pass environment.This is all very important for for example WLAN (WLAN (wireless local area network)) and 3G and 4G cellular mobile terminal.
For the circular polarization radio wave, main matrix shape antenna is commonly used for flat plane antenna.The lip-deep patch antenna element that the antenna of this structure comprises ceramic bases and is arranged on ceramic bases.In addition, earthing conductor is arranged on a side of ceramic bases, and is relative with that side that patch antenna element is set.Feed pin is connected to the feeder section of work at the patch antenna element reverse side by the through hole that forms and by earthing conductor on ceramic bases.In principle, in main matrix shape antenna, the essential electrical length of 1/2 wavelength basically that forms in the both sides of mutually orthogonal in the plane.In order to make main matrix shape antenna miniaturization, the essential big medium substrate of dielectric constant of using.For example, the length of antenna side has been reduced to 1/5th of the receiving terminal that do not use the high-k substrate in the vehicle-mounted receiving terminal of GPS.This still means about 20 to 25mm edge length, in the application of using compact communication apparatus (for example portable receiving terminal), still makes terminal increase many volume and weights.The easier miniaturization of above-mentioned PIFA, but be designed for the linear polarization radio wave.
Authorize Yanagisawa etc., transfer the U.S. Patent No. 6 of Yokowo Co., 369,762 at the shortcoming that the technology antenna is arranged, particularly point out and illustrated main matrix shape antenna, and advised being used for the antenna of circularly polarised wave, and the latter has a pair of electrode that is used for the radiation polarized wave that is provided with abreast with ground conductor plane basically, and exciting electrode is arranged between this a pair of electrode.Feed partly is electrically connected to exciting electrode, and wherein first of each radiation electrode is terminal relative with exciting electrode, thereby constitute electric capacitive coupling.Second end of each radiation electrode is connected to ground conductor plane, and the feasible direction of an electric field that is energized is mutually orthogonal basically.The structure of antenna is L shaped basically, and the electrical length of each arm is 1/4 particular radio wavelength in two quadrature arms.
Summary of the invention
The design of Yanagisawa suggestion provides the small size antenna that is used for circularly polarised wave, but still needs diversity in the antenna system of radio telecommunication terminal.So purpose of the present invention just provides the compact diversity antenna that is used for radio communication of the deficiency that can overcome prior art.
According to first aspect, this purpose realizes that by the diversity wireless aerial it comprises: the ground connection substrate; The first and second elongate antenna units, each element is all parallel with described ground connection substrate but extend between separately the first and second relative ends on the separated plane; And exciting electrode, it is inserted between described first end separately.The grounding connector switching device is designed to optionally described ground connection substrate is connected with described antenna element and disconnect, and is used for the radiation beam figure and the polarization diversity of control antenna.
In one embodiment, described grounding connector switching device is designed to optionally described second terminally being connected with ground and disconnecting separately with antenna element.
Best, described antenna element extends on described plane basically orthogonally.
In a preferred embodiment, described grounding connector switching device comprises MEMS (micro electro mechanical system) (MEMS) switch.
In one embodiment, described exciting electrode is capacitively coupled to described first end separately of described antenna element.
Best, described grounding connector switching device is designed to described first and second antenna elements are connected to ground, so that make antenna adaptation circular polarization radio wave.And described grounding connector switching device preferred design becomes one of described first and second antenna elements are connected to ground, and will described first and second antenna elements another and disconnection, make antenna adaptation linear polarization radio wave.
In a preferred embodiment, described grounding connector switching device is connected to ground with described first and second antenna elements, makes antenna adaptation circular polarization radio wave, or one of described first and second antenna elements and ground are disconnected, and makes antenna adaptation linear polarization radio wave.
In one embodiment, described grounding connector switching device is designed to optionally predetermined impedance be passed through in described ground connection substrate, preferably by predetermined emotional resistance, is connected to described antenna element.
In a preferred embodiment, each in described first and second antenna elements all has the electrical length of 1/4th predetermined radio frequency wavelength.
Between the described ground connection substrate that preferably dielectric member is inserted in described plane and for example makes by ceramic material.
In such an embodiment, described antenna element and described exciting electrode are preferably disposed on the first surface of dielectric member, and described ground connection substrate be formed on described dielectric member second surface near, relative with described first surface and parallel.
Best, described exciting electrode is formed by the conductive material coating that is arranged on the described first surface, the first and second then formation respectively by the described coating of etching at interval between described exciting electrode and described first and second antenna elements.Advantageously, the side of radio frequency feed conductor from described exciting electrode along described dielectric member extends on the feed pad on the described second surface.
In one embodiment, the form with the material layer in the printed circuit board (PCB) forms described ground connection substrate.
According to second aspect, purpose of the present invention realizes that by radio telecommunication terminal described terminal comprises the diversity wireless aerial with above-mentioned arbitrary feature.
Brief Description Of Drawings
To the following explanation of preferred embodiment, the features and advantages of the present invention are just more apparent in conjunction with the drawings, in the accompanying drawing:
Fig. 1 illustrates the perspective illustration according to the compact diversity antenna of first embodiment of the invention;
Fig. 2 illustrates the schematic diagram of the antenna of Fig. 1 from another visual angle;
Fig. 3 illustrates the schematic diagram according to second embodiment of the demonstration of diversity antenna of the present invention;
Fig. 4 illustrates the schematic diagram according to the 3rd embodiment of the demonstration of diversity antenna of the present invention;
Fig. 5-7 illustrates the schematic diagram according to the different conditions of grounding connector switching device in the diversity antenna of diversity antenna embodiment of the present invention; And
Fig. 8 illustrates the schematic diagram of employing according to the communication terminal of the demonstration of the Antenna Design of the embodiment of the invention,
DETAILED DESCRIPTION OF THE PREFERRED
This specification is about radio terminal, promptly adopts a kind of device of wireless aerial design of the present invention.Term " radio terminal " comprise that all mobile devices that are designed to carry out with radio station radio communication, described radio station also can be portable terminal or stationary base station for example.So, term " and radio terminal " comprise mobile phone, beeper, communicator, electronic organisers, smart phone, PDA (personal digital assistance), on-vehicle radio communication apparatus etc. and the portable laptop that is designed in WLAN (WLAN (wireless local area network)), carry out radio communication.And, because being suitable for, this antenna is not limited to mobile purposes, term " radio terminal " will also be understood that be comprise be designed to utilize each other or with any stationary apparatus of the radio communication work of other radio station, for example desktop computer, printer, facsimile machine etc.Therefore, though to the structure of Antenna Design of the present invention and feature mainly is that mode with example is being illustrated aspect the enforcement of mobile phone, but should not be construed as, this gets rid of the use of Antenna Design of the present invention in the radio terminal of other type, as above listed.And that should emphasize is term " comprise ", in this explanation and appended claims, be used for indicating included feature, element and step, never be interpreted as getting rid of and have further feature, element and a step of not addressing.
Above-mentioned United States Patent (USP) 6,369,762 discloses a kind of L shaped dielectric resonator antenna DRA that is used for circularly polarised wave, and described disclosure is included in this paper as a reference.Known DRA is used for the pottery of microwave frequency or the small size antenna of another kind of medium.Dielectric resonator, its relative dielectric constant are ε
r＞＞1 medium is surrounded by air, the discrete spectrum that has eigenfrequency and eigenmodes owing to electromagnetism restrictive condition on the electric matter border surface.These conditions are defined by the special solution of the electromagnetic equation of the electric matter that border surface is had given restrictive condition.Opposite with resonator, resonator has very high quality when having avoided radiation loss, and radiation of power is main problem in resonant aerial.Owing to do not have conductive structure to be used as radiant element, so can not be subjected to the infringement of kelvin effect.So this antenna has low ohmic losses when high frequency.When using the material of high relative dielectric constant, just can realize compact small-scale structure, because for the eigenfrequency (transmitting and receiving frequency) of preliminary election, by increase ε
rJust size can be reduced.The DRA size of given frequency basically with
Be inversely proportional to.ε
rBe increased to α doubly, all sizes are reduced to
/ one, so volume is reduced to α
3/2/ one, and resonance frequency remains unchanged.And the material that is used for DRA should be suitable for high frequency to be used, and has little dielectric loss and has temperature stability.This has just limited operable material greatly.The ε that the material that is suitable for has
rValue its maximum usually is 120.Except this restriction to the miniaturization possibility, the radiation characteristic of DRA is with ε
rRising and descend.
Fig. 1 illustrates the schematic diagram according to the compact diversity antenna of first embodiment of the invention, and Fig. 2 illustrates from the being seen same embodiment of another angle.Antenna is installed on the supporting construction, for example is preferably formed as on the surface-supported printing board PCB on plane basically.Supporting construction comprises substrate electrical ground 1, and it can cover the major part of supporting construction.Perhaps, ground connection substrate 1 may be limited to the part of supporting construction, and that part of antenna promptly is set.Preferably the form with material layer on the PCB outside or intermediate layer is grounded substrate 1.In another embodiment, ground connection substrate 1 can be formed directly into the antenna bottom side.Among Fig. 1, show that the form to extend to the outer planar substrates of antenna illustrates ground connection substrate 1.
Antenna be arranged on the medium substrate 1 or near, it comprises it being L shaped dielectric member 11 basically, the branch that the latter has two perpendicular is parallel to the branch that ground connection substrate 1 is extended.Dielectric member 11 is made by high dielectric constant materials, preferably pottery.The nonexcludability example of this class material comprises BaO-TiO
2-SnO
2And MgO-CaO-TiO
2, their relative dielectric constant is approximately 30 or higher.Dielectric member 11 has first surface, i.e. upper surface shown in the figure, and apart from ground connection substrate 1 surface far away, and second surface, relative with first surface and parallel.Second surface is arranged at least contiguous ground connection substrate 1, may directly contact with ground connection substrate 1, and the parallel but separated plane of first surface formation and ground connection substrate 1.And dielectric member preferably has straight side, and the latter extends between first and second surfaces and perpendicular to first and second surfaces.
Antenna structure mainly is arranged on the first surface of dielectric member 11.Exciting electrode 4 is arranged on two branch intersections of dielectric member 11.The feed-through 12 that utilization is extended along side of dielectric member 11 is connected to exciting electrode the feed pad 13 on the second surface of dielectric member 11.Feed pad 13 only is signal in the drawings, and the conductive welding disk that expression is connected to feed-through 12 is positioned under the corner with mark of dielectric member 11.Feed pad can be connected to preferably by the radio circuit that PCB supported as described supporting construction.Antenna also comprises two elongated substantially antenna elements 2,3, extends on by dielectric member 11 formed planes.First antenna element 2 extends along first branch of dielectric member 11, from first end 5 (described end is separated by gap 14 and exciting electrode 4) to second end 7.Gap 14 provides the capacitive coupling between exciting electrode 4 and the antenna element 2, is used for sending and receiving radio wave.Second antenna element 3 extends along second branch of dielectric member 11, from first end 6 (described end is separated by gap 15 and exciting electrode 4) to second end 8.Correspondingly, gap 15 provides the capacitive coupling between exciting electrode 4 and the antenna element 3, is used for sending and receiving radio wave.Each preferably has the electrical length of 1/4 centre wavelength of given radio bands in two antenna elements 2,3.But physical length depends on DIELECTRIC CONSTANT
r
In a preferred embodiment, antenna structure comprises that the formation method of exciting electrode 4 and antenna element 2,3 is: at first utilize the first surface of suitable process with electric conducting material coated media member 11.The second, dry method or wet etching coating material from the first surface form dividing element 2-4, gap 14,15.Feed-through 12 also can form in this process.In the specific embodiment of Fig. 1 and 2, antenna element the 2, the 3rd, rectangle, exciting electrode 4 extends a short part each branch to the first surface of dielectric member 11.But should point out that this is a specific embodiment, other shape also is fine.
Fig. 3 illustrates second embodiment, and antenna element 2,3 and exciting electrode 4 only are shown.In this example, exciting electrode 4 is rectangles, or or even foursquare, so do not extend to the branch of dielectric member 11 first surfaces.
Fig. 4 illustrates the 3rd example embodiment, and wherein exciting electrode 4 is into the intersection of 11 liang of branches of diagonal formula extend through dielectric member basically.Equally, make first terminal 5 angulations of antenna element 2,3 respectively, so that make gap 14,15 have constant width.Other specific embodiment it would, of course, also be possible to of antenna structure figure, and complications when antenna element is extended between separately first end 5,6 and second end 7,8.
Utilize grounding connector switching device 9,10 optionally antenna element 2,3 to be connected to ground connection substrate 1.Grounding connector switching device 9,10 preferred design become each second end with antenna element, and promptly the outer end 7,8, are connected to ground connection substrate 1.But in different embodiment, grounding connector switching device 9,10 is designed to another part of antenna element is connected to ground connection substrate 1, for example each side of elongate antenna unit 2,3.
Consider respectively, each antenna element 2,3 cooperates with exciting electrode 4 electric capacity, forms to be applicable to the antenna that transmits and receives line polarization wave.Change the electrical length of each antenna element 2,3, just can freely regulate the resonance frequency of each antenna element 2,3.As long as make in the antenna element 2,3 the employed relatively centre frequency upward displacement of resonance frequency of any as required, and the described relatively centre frequency of the resonance frequency of all the other antenna elements is shifted downwards, the electromagnetic phase place that another antenna element of an electromagnetic wave phase deviation that antenna element produced is produced.The resonance frequency of antenna element 2,3 is adjusted to the phase shift that 90 degree take place between electromagnetic wave.More particularly, length by regulating antenna element 2 and 3 and the degree of coupling between antenna element 2 and 3 (its practice be regulate antenna element 2 and 3 and exciting electrode 4 between gap width), just can use the antenna element 2 and 3 that is used for line polarization wave, not using under the situation of special feed circuit, transmit and receive circularly polarised wave.
Fig. 5 to 7 illustrates according to function that can adaptive antenna of the present invention, represents corresponding element with label identical in the previous figures.First antenna element 2 has the first grounding connector switching device 9, and it is optionally with antenna element 2 ground connection, and second antenna element 3 has the second grounding connector switching device 10, and it is optionally with antenna element 3 ground connection.
State shown in Fig. 5 is that two grounding connector switching devices 9,10 are all connected, in other words two antenna elements 2,3 ground connection all.As shown in exemplary view, in this specific embodiment, each ground link is respectively by impedance 16 and 17.Best, described impedance is provided by inductive member 16,17 (for example coil).In another embodiment, inductive member 16,17 comprises capacitive component.Switch motion is preferably by micro electro-mechanical system switch, and promptly mems switch is controlled.This MEMS has low insertion loss and low-power consumption, can provide favourable power-saving effect to antenna.In state shown in Figure 5, antenna is applicable to circular polarization.
State shown in Fig. 6 is that the first grounding connector switching device 9 is connected, and the second grounding connector switching device 10 disconnects.Have only antenna element 2 ground connection at this state in other words, and antenna element 3 is maintained at free space on electric.In the case, have only, or mainly be, first antenna member 2 will be used for transmitting and receiving of antenna, provide linear polarization to it.Consult Fig. 1 and 2, antenna has horizontal polarization under this state.
State shown in Fig. 7 is that the first grounding connector switching device 9 disconnects, and the second grounding connector switching device 10 is connected, and have only antenna element 3 ground connection at this state in other words, and antenna element 2 is maintained at free space on electric.In the case, have only, or mainly be, second antenna member 3 will be used for transmitting and receiving of antenna, provide linear polarization to it.Consult Fig. 1 and 2, antenna has perpendicular polarization under this state.
Like this, what just can obtain to have beam pattern and polarization diversity can adaptive antenna, and the radio-frequency feed path that is maintained fixed simultaneously.Can in radio telecommunication terminal, be advantageously used for diversity or the MIMO compact diversity antenna in using according to antenna of the present invention.(not shown) in another embodiment is not by impedance earth or connect free space, but makes antenna element 2,3 ground connection by the first and second different impedances.This can make the resonance shift of antenna element 2,3, but can not influence beam pattern and polarization diversity with same degree.
Fig. 8 is illustrated in the radio telecommunication terminal among cellular mobile telephone 30 embodiment, is designed to comprise according to antenna of the present invention.Terminal 30 comprises casing 35, and it is user's audio frequency input of transmitter 31 and user's audio frequency output that form is loud speaker 32 or Earphone joint (not shown) that form is arranged on it.Composition data inputting interfaces 33 such as one group of key, button can be used for for example dialling etc., decide according to the technology of being set up.The data output interface that comprises display 34 in addition, the mode display communication information that is designed to know, address table etc. with those skilled in the art.Radio telecommunication terminal 30 comprises radio transmission and receives the electronic circuit (not shown), they are connected on the built-in aerial in the casing 35, described antenna is installed on the supporting construction, and it is a planar object, preferably PCB that described supporting construction is represented by dotted lines in the drawings.According to the present invention, this antenna for example corresponding to Fig. 1, comprising: ground connection substrate 1; The first and second elongate antenna units 2,3, each antenna element is being parallel to described ground connection substrate but is extending between terminal 7,8 relatively at separately first end 5,6 and second on the separated plane; And exciting electrode 4, it is arranged between described first end separately.Grounding connector switching device 9,10 is designed to optionally described ground connection substrate is connected with described antenna element and disconnect, in order to the radiation beam figure and the polarization diversity of control antenna.Above-mentioned further feature according to Antenna Design of the present invention is effectively same certainly for the radio terminal embodiment of Fig. 8.
More than principle of the present invention, preferred embodiment and working method are described.But should not be interpreted as the present invention and be limited to above-mentioned certain embodiments.For example, the present invention never is limited to use solid dielectric member, and dielectric member also can be by gas, and for example air provides.So should think that the foregoing description is illustrative and nonrestrictive, and should be understood that those skilled in the art can change these embodiment under not deviating from by the situation of the defined scope of the present invention of following claims.
Claims (18)
1. diversity wireless aerial, it comprises: ground connection substrate (1); The first and second elongate antenna units (2,3), each antenna element is being parallel to described ground connection substrate but extension between first end (5,6) relative with second terminal (7,8) separately on the separated plane; And exciting electrode (4), it is arranged between described first end separately, it is characterized in that: grounding connector switching device (9,10) is designed to optionally described ground connection substrate is connected with described antenna element and disconnect, in order to radiation beam figure and the polarization diversity of controlling described antenna.
2. diversity wireless aerial as claimed in claim 1 is characterized in that: described grounding connector switching device is designed to optionally second terminally being connected with ground wire and disconnecting separately with described antenna element.
3. diversity wireless aerial as claimed in claim 1 is characterized in that: described antenna element extends in described plane basically orthogonally.
4. diversity wireless aerial as claimed in claim 1 is characterized in that: described grounding connector switching device comprises micro electro-mechanical system switch.
5. diversity wireless aerial as claimed in claim 1 is characterized in that: described exciting electrode is capacitively coupled to described first end separately of described antenna element.
6. diversity wireless aerial as claimed in claim 1 is characterized in that: described grounding connector switching device is designed to the described first and second antenna element ground connection are made described antenna adaptation circular polarization radio wave.
7. diversity wireless aerial as claimed in claim 1, it is characterized in that: described grounding connector switching device is designed to one of described first and second antenna elements ground connection, and, make described antenna adaptation linear polarization radio wave with another and ground disconnection in described first and second antenna elements.
8. diversity wireless aerial as claimed in claim 1, it is characterized in that: described grounding connector switching device is designed to optionally with the described first and second antenna element ground connection, make described antenna adaptation circular polarization radio wave, or, make described antenna adaptation linear polarization radio wave with one of described first and second antenna elements and ground disconnection.
9. diversity wireless aerial as claimed in claim 1 is characterized in that: described grounding connector switching device is designed to optionally described ground connection substrate is connected to described antenna element by predetermined impedance.
10. diversity wireless aerial as claimed in claim 1 is characterized in that: described grounding connector switching device is designed to optionally described ground connection substrate is connected to described antenna element by predetermined emotional resistance.
11. diversity wireless aerial as claimed in claim 1 is characterized in that: each described first and second antenna element has 1/4th the electrical length that equals the predetermined radio frequency wavelength.
12. diversity wireless aerial as claimed in claim 1 is characterized in that: dielectric member is arranged between described plane and the described ground connection substrate.
13. diversity wireless aerial as claimed in claim 12 is characterized in that: described dielectric member is made by ceramic material.
14. diversity wireless aerial as claimed in claim 12, it is characterized in that: described antenna element and described exciting electrode are set on the first surface of described dielectric member, and form described ground connection substrate relatively and near being parallel to the second surface of described first surface in described dielectric member.
15. diversity wireless aerial as claimed in claim 14, it is characterized in that: described antenna element and described exciting electrode are formed by the conductive material coating that is arranged on the described first surface, and form first and second respectively at interval between described exciting electrode and described first and second antenna elements by the described coating of etching.
16. diversity wireless aerial as claimed in claim 14 is characterized in that: the side of radio frequency feed conductor from described exciting electrode along described dielectric member extends to the feed pad on the described second surface.
17. diversity wireless aerial as claimed in claim 1 is characterized in that: the form with the material layer in the printed circuit board (PCB) forms described ground connection substrate.
18. a radio telecommunication terminal (30) is characterized in that comprising according to each described diversity wireless aerial in the aforementioned claim.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03075785.0 | 2003-03-18 | ||
| EP03075785A EP1460713B1 (en) | 2003-03-18 | 2003-03-18 | Compact diversity antenna |
| US45817003P | 2003-03-27 | 2003-03-27 | |
| US60/458,170 | 2003-03-27 | ||
| PCT/EP2004/001503 WO2004084344A1 (en) | 2003-03-18 | 2004-02-18 | Compact diversity antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1816941A true CN1816941A (en) | 2006-08-09 |
| CN1816941B CN1816941B (en) | 2010-12-22 |
Family
ID=32798952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480007359.6A Expired - Fee Related CN1816941B (en) | 2003-03-18 | 2004-02-18 | Compact diversity antenna |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1460713B1 (en) |
| CN (1) | CN1816941B (en) |
| AT (1) | ATE385052T1 (en) |
| DE (1) | DE60318813T2 (en) |
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| WO2010148793A1 (en) * | 2009-11-20 | 2010-12-29 | 中兴通讯股份有限公司 | Dual-mode terminal antenna and signal processing method |
| CN102007642A (en) * | 2008-04-16 | 2011-04-06 | 索尼爱立信移动通讯有限公司 | Antenna assembly, printed wiring board and device |
| CN102263318A (en) * | 2010-05-24 | 2011-11-30 | 广达电脑股份有限公司 | Antenna module and electronic device with same |
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| CN103873122A (en) * | 2012-12-11 | 2014-06-18 | 中兴通讯股份有限公司 | Method, device and apparatus for sending antenna signals |
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| CN104701606A (en) * | 2015-03-13 | 2015-06-10 | 西安电子科技大学 | Polarity diversity antenna for mobile communication |
| WO2016019733A1 (en) * | 2014-08-07 | 2016-02-11 | 比亚迪股份有限公司 | Antenna radiator, antenna and mobile terminal |
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| EP1804335A4 (en) * | 2004-09-30 | 2010-04-28 | Toto Ltd | Microstrip antenna and high frequency sensor using microstrip antenna |
| US7231237B2 (en) * | 2005-08-31 | 2007-06-12 | Motorola, Inc. | Wireless communication device with strategically positioned antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4367474A (en) * | 1980-08-05 | 1983-01-04 | The United States Of America As Represented By The Secretary Of The Army | Frequency-agile, polarization diverse microstrip antennas and frequency scanned arrays |
| JPH0964639A (en) * | 1995-08-25 | 1997-03-07 | Uniden Corp | Diversity antenna circuit |
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-
2003
- 2003-03-18 AT AT03075785T patent/ATE385052T1/en not_active IP Right Cessation
- 2003-03-18 DE DE60318813T patent/DE60318813T2/en not_active Expired - Lifetime
- 2003-03-18 EP EP03075785A patent/EP1460713B1/en not_active Expired - Lifetime
-
2004
- 2004-02-18 CN CN200480007359.6A patent/CN1816941B/en not_active Expired - Fee Related
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| CN104701606A (en) * | 2015-03-13 | 2015-06-10 | 西安电子科技大学 | Polarity diversity antenna for mobile communication |
| CN107230825A (en) * | 2016-03-23 | 2017-10-03 | 联发科技股份有限公司 | The antenna and radio communication device of changeable radiation direction |
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| WO2017166354A1 (en) * | 2016-03-31 | 2017-10-05 | 宇龙计算机通信科技(深圳)有限公司 | Circularly polarized antenna design method, circularly polarized antenna and mobile terminal |
| CN107293839A (en) * | 2016-03-31 | 2017-10-24 | 宇龙计算机通信科技(深圳)有限公司 | Design method, circular polarized antenna and the mobile terminal of circular polarized antenna |
| CN114389005A (en) * | 2020-10-19 | 2022-04-22 | 华为技术有限公司 | Electronic equipment |
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| WO2023221876A1 (en) * | 2022-05-17 | 2023-11-23 | 华为技术有限公司 | Electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE385052T1 (en) | 2008-02-15 |
| CN1816941B (en) | 2010-12-22 |
| EP1460713A1 (en) | 2004-09-22 |
| DE60318813T2 (en) | 2009-01-15 |
| EP1460713B1 (en) | 2008-01-23 |
| DE60318813D1 (en) | 2008-03-13 |
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