CN1906805A - System and method for transmission parameter control for an antenna apparatus with selectable elements - Google Patents
System and method for transmission parameter control for an antenna apparatus with selectable elements Download PDFInfo
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Abstract
A system and method for a wireless link to a remote receiver includes a communication device for generating RF and an antenna apparatus for transmitting the RF. The antenna apparatus comprises a plurality of selective antenna elements, each element provides gain and a horizontally polarized directional radiation pattern. The different antenna elements may be switched to result in configurable radiation patterns or with multiple of the antenna elements to form an omnidirectional horizontally polarized radiation pattern. One or more directors and/or reflector may be included to concentrate the radiation pattern. The antenna apparatus may be conformally mounted to a housing containing the communication device and the antenna apparatus.
Description
Cross reference to related application
The application requires to be called in the name that on August 18th, 2004 submitted to the U.S. Provisional Application 60/602 of " Planar Antenna ApparatusFOR Isotropic Coverage and Qos Optimization in Wireless Network ", 711 rights and interests, it is in view of the above by the reference combination, and the U.S. Provisional Application 60/603 that is called " Software for Controlling a Planar AntennaApparatus FOR Isotropic Coverage and Qos Optimization in WirelessNetwork " in the name that on August 18th, 2004 submitted to, 157 rights and interests, it is in view of the above by the reference combination.
Technical field
Relate generally to wireless communication network of the present invention relates more specifically to a kind of system and method with omnidirectional's antenna apparatus of selectable elements that is used for.
Background technology
In communication system, constantly increase the requirement that higher data flux rate and is reduced the respective drive of the interference that can interrupt data communication.For example, in an IEEE 802.11 networks, an access point (meaning promptly, base station) on a Radio Link with one or more long-range receiving node (for example a, adapter) communication data.Radio Link is vulnerable to disturb, and this disturbs from change or disturbance in the wireless link environment between other access point, other wireless transmission device, this access point and the long-range receiving node, or the like.This interference can be (for example) by forcing under a lower data speed communication Radio Link of demote, or too by force to interrupt the interference of Radio Link fully.
A kind of solution of the interference that is used for reducing the Radio Link between access point and remote node is for to provide some omnidirectional antennas for access point in one " diversity " scheme.For example, the common configuration of one of access point comprises once the data source that is coupled to the omnidirectional antenna that separates on two or more entities by a switching network.Access point one of can be selected in the described omnidirectional antenna person, keeps Radio Link by this.Because separate between the described omnidirectional antenna, thus each antenna experience a different signal environment and every day the alignment Radio Link contribute a different interference level.Switching network is coupled to this data source any in the omnidirectional antenna that experiences least interference in Radio Link.
Yet a problem that two or more omnidirectional antennas are used for access point is that general omnidirectional antenna is vertical polarization.The radio frequency of vertical polarization (RF) energy can not advanced as the RF energy of horizontal polarization in general office or the living space effectively, and in addition, the unruled card of most of laptop computers has horizontal-polarized antenna.Up to now, the general solution of making the RF antenna be used to set up horizontal polarization is comparatively expensive, or does not provide and can successfully be commercial suitable R F usefulness.
Further problem is that omnidirectional antenna comprises a upright wand that is attached to the shell of this access point usually.This rod comprises a hollow metallic rod that is exposed to this housing exterior usually, and it can rupture or be damaged.Another problem is that each omnidirectional antenna comprises a separate unit made from respect to access point, therefore requires extra manufacturing step so that omnidirectional antenna is included in the access point.
Use the further problem of two or more omnidirectional antennas to be: because the antenna that separates on the described entity is still approaching relatively each other, so each in described some antennas can stand similar interference level and only can reduce interference by be converted to another omnidirectional antenna from an omnidirectional antenna relatively lessly.
Reduce another solution of disturbing and relate to beam position with an automatically controlled phased array antenna.Yet the cost of making phased array antenna is very expensive.In addition, phased array antenna may need to drift about or with the method for distinguishing many phase adjustment element of imbalance that become.
Summary of the invention
A kind of antenna assembly comprises substrate, and this substrate has second side of first side and substantially parallel this first side.In a plurality of antenna elements on first side each is configured to and optionally is coupled to a communication device and forms a first with dipole through revising of a directed radiation diagram.Grounding assembly on this second side is configured to the second portion that forms this dipole through revising.In certain embodiments, each in described a plurality of antenna element is positioned on the same side of this substrate.
In certain embodiments, the antenna element selector optionally is coupled to communication device with in the described antenna element one or more.When in the described antenna element both or both more than when being coupled to communication device, this antenna assembly can form omnidirectional radiation pattern.This antenna element can comprise and is configured to one or more the one or more reflectors and/or the guider of concentrating in the described dipole through revising of directional radiation.The radiation diagram of the comparable individual antenna element of a combined radiation pattern that is produced by two or more antenna elements that are coupled to communication device is relatively poor than tool directionality or directionality.This combined radiation pattern also can be offset in direction.But described a plurality of antenna element conformal is mounted to the shell that contains this communication device and this antenna assembly.
A kind of system comprises: be used to produce radiofrequency signal communication device, be used to produce first directional radiation first device, be used to produce second device of second directional radiation and be used to receive from the radio frequency signal of this communication device and optionally this first device and/or this second device be coupled to the choice device of this communication device.This second directional radiation can be from this first directed radiation map migration in direction.In certain embodiments, comparable first directional radiation of second directional radiation have more directionality, than the directionality difference of first directional radiation or identical with first directional radiation with the direction skew and the directionality of first directional radiation.When with first device and second device when being coupled to communication device, this first device and this second installs and can form an omnidirectional radiation pattern.This system can comprise the device that is used for concentrating this first directional radiation of installing.
A kind of method is included in the communication device and produces radiofrequency signal and in a plurality of copline antenna elements at least one is coupled to communication device to produce the directional radiation in the plane of described antenna element basically.This method can comprise with in described a plurality of copline antenna elements both or both more than be coupled to communication device to produce omnidirectional radiation pattern.This method can comprise utilizes one or more guiders and/or reflector to concentrate this directional radiation.In described a plurality of copline antenna elements at least one is coupled in fact any other device that communication device can comprise biasing one PIN diode or conversion RF energy.This method can comprise and is coupled to communication device to produce one than the direction-sense radiation diagram of tool with at least two in described a plurality of copline antenna elements.This method can further comprise and is coupled to communication device to produce the relatively poor radiation diagram of directionality with at least two in described a plurality of copline antenna elements.
Description of drawings
To describe the present invention in conjunction with the accompanying drawings, described accompanying drawing provides the preferred embodiments of the present invention.In the accompanying drawings, same element has identical reference number.Illustrated embodiment is intended to explanation and unrestricted the present invention.Described accompanying drawing comprises:
Fig. 1 explanation is in the system according to the omnidirectional's antenna apparatus that has selectable elements comprising in one embodiment of the invention;
Fig. 2 A and Fig. 2 B explanation are at the antenna apparatus according to the Fig. 1 in one embodiment of the invention;
Fig. 2 C and Fig. 2 D illustrate in according to one embodiment of the invention, the size of some assemblies of the antenna apparatus of Fig. 1;
Fig. 3 A illustrates in according to one embodiment of the invention, the various radiation diagrams that the different antennae element of the antenna apparatus of selection Fig. 2 is produced;
Fig. 3 B illustrates in according to one embodiment of the invention, the elevation radiation pattern of the antenna apparatus of Fig. 2; And
One alternate embodiment of the antenna apparatus 110 of Fig. 4 A and Fig. 4 B key diagram 1 according to the present invention.
Embodiment
A kind of being used for comprises communication device that produces the RF signal and the antenna apparatus that is used to send and/or receive the RF signal to the system of wireless (meaning promptly, radio frequency or RF) link of a remote receiver part.This antenna apparatus comprises optional selecting antennas element.In the described antenna element each provides gain (about isotropism) to reach the directional radiation in the plane of described antenna element basically.Every day, kind of thread elements can be selected (for example, being switched on or switched off) through electric power, so that antenna apparatus can form a configurable radiation diagram.If connect all elements, then antenna apparatus forms an omnidirectional radiation pattern.In certain embodiments, if connect two or more described elements, then antenna apparatus can form basically an omnidirectional radiation pattern.
The customized configuration of a selected antenna element can advantageously be selected by this system, and it is minimized to the interference on the Radio Link of remote receiver part.If Radio Link stands the interference that (for example) causes owing to the change in other wireless transmission device or the Radio Link between this system and remote receiver part or disturbance, then this system difference that can select to select antenna element is configured to change the radiation diagram and the minimise interference of gained.The configuration corresponding to the maximum gain between this system and the remote receiver part of selected antenna element can be selected by this system.Perhaps, this system can select selected antenna element corresponding to than the little gain of maximum gain but corresponding to the configuration of the interference that reduces in the Radio Link.
As further described herein, the antenna apparatus radiation directional radiation in the plane of described antenna element basically.When level was installed this device, the RF signal was sent as horizontal polarization, and is stronger than the antenna of vertical polarization so that indoor RF signal sends.Antenna apparatus is easily made by the common plane substrate such as a FR4 printed circuit board (PCB) (PCB).In addition, antenna apparatus can be integrated in the shell of this system or conformal is mounted to the shell of this system to minimize cost and to be that antenna apparatus provides support.
Fig. 1 illustrates a system 100, and it comprises one according to the omnidirectional's antenna apparatus with selectable elements in one embodiment of the invention.System 100 can comprise, and for example, but is not limited to, one transmitter and/or a receiver, such as, 802.11 access points, 802.11 receivers, a set-top box, laptop computer, TV, pcmcia card, remote controller, and a remote testing such as the handheld game device.In some exemplary embodiments, system 100 comprises one and is used at Radio Link, for example, in one 802.11 wireless networks, the access point of communicating by letter with one or more long-range receiving node (not shown).Usually, system 100 can receive data from a router that is connected to the internet (not shown), and system 100 can be sent to data one or more long-range receiving node.System 100 also can form the part of a WLAN by enabling communication in some long-range receiving nodes.Although this disclosure will focus on a specific embodiment of system 100, aspect of the present invention is applicable to multiple utensil, and is not restricted to the embodiment that disclosed.For example, although system 100 can be described as via antenna apparatus data are sent to long-range receiving node, system 100 also can be via the data of antenna apparatus reception from long-range receiving node.
As further described herein, antenna apparatus 110 comprises a plurality of independent selectable planar antenna element.In the described antenna element each has the directional radiation (comparing with omnidirectional antenna) of gain.In the described antenna element each also has the polarization in the plane of antenna apparatus 110 basically.Antenna apparatus 110 can comprise that one is configured to the antenna element selector that optionally one or more antenna elements is coupled to communication device 120.
Fig. 2 A and Fig. 2 B explanation are at the antenna apparatus 110 according to the Fig. 1 in one embodiment of the invention.The antenna apparatus 110 of this embodiment comprises a substrate (thinking that it is the plane of Fig. 2 A and 2B), and this substrate has first side (for example, Fig. 2 A) and is arranged essentially parallel to second side (for example, as 2B) of first side.In certain embodiments, this substrate comprises a PCB such as FR4, Rogers 4003 or other dielectric material.
On first side of substrate, the antenna apparatus 110 of Fig. 2 A comprises a radio-frequency feed inbound port 220 and four antenna element 205a-205d.As describing,, can contain more or less antenna element although described 4 antenna elements about Fig. 4.Although the antenna element 205a-205d of Fig. 2 A is oriented on the diagonal of a square-shaped planar antenna basically so that minimize the size of antenna apparatus 110, also contain other shape.In addition, although antenna element 205a-205d forms a layout about radio-frequency feed inbound port 220 radial symmetric, also contain multiple asymmetric layout, rectangular layout and only about symmetrical layout in.In addition, although as so describing among Fig. 2 A, antenna element 205a-205d does not need to have identical size.
Shown in Fig. 2 B, on second side of substrate, antenna apparatus 110 comprises a grounding assembly 225.Should be appreciated that the part of grounding assembly 225 (for example, part 230a) is configured in conjunction with antenna element 205a and forms a flechette-type bent dipole.The bent dipole of this gained provides the directional radiation in the plane of antenna apparatus 110 basically, and it is further described about Fig. 3.
Fig. 2 C and Fig. 2 D explanation is in the size according to some assemblies of the antenna apparatus in one embodiment of the invention 110.The size that should be appreciated that the single component (for example, a part of 230a of antenna element 205a, grounding assembly 205) of antenna apparatus 110 depends on a required operating frequency of antenna apparatus 110.The size of single component can be determined by using such as the RF simulation software available from the IE3D of the Zeland Softwareof Fremont of CA.For example, in conjunction with according to the antenna apparatus 110 of the assembly of the size of Fig. 2 C and Fig. 2 D substrate P CB based on Rogers 4003 materials, and through designing to be used for operating frequency near 2.4GHz, but the Antenna Design person of this technology of ordinary skill should be appreciated that, can require and the different size of size shown in Fig. 2 C and Fig. 2 D such as the different substrate with different dielectric characteristic of FR4.
As shown in Figure 2, antenna apparatus 110 can comprise one or more guider 210, one or more gain directors 215 and/or one or more Y shape reflector 235 (for example, at the Y shape reflector 235b described in Fig. 2 B and Fig. 2 D) according to circumstances.Guider 210, gain directors 215 and Y shape reflector 235 comprise passive device, in the described sets of elements by the directional radiation of antenna element 205a-205d together with the formed dipole of part 230a-230d.In one embodiment, for every day kind of thread elements 205a-205d provide a guider 210 can make each dipole obtain the additional gain of 1dB to 2dB.Should be appreciated that guider 210 and/or gain directors 215 can be placed on arbitrary side of substrate.In certain embodiments, the part that is used for guider 210 and/or gain directors 215 of substrate is rule so that guider 210 and/or gain directors 215 can be removed.Should also be clear that and to comprise that extra guider (being used for described in the position of being showed by dotted line 211 of antenna element 205b) and/or extra gain directors (described in the position of being showed by dotted line 216) are further to concentrate the directional radiation of one or more dipoles.Y shape reflector 235 will further be described in this article.
Radio-frequency feed inbound port 220 is configured to reception from the RF signal of the communication device 120 of Fig. 1 and/or the RF signal is sent to the communication device 120 of Fig. 1.Antenna element selector (not shown) can be in order to be coupled to radio-frequency feed inbound port 220 one or more among the antenna element 205a-205d.The antenna element selector can comprise a RF transducer (not shown), in fact any device of the PIN diode of knowing such as this specialty, GaAsFET or conversion RF.
In the embodiment of Fig. 2 A, the antenna element selector comprises 4 PIN diode, and each PIN diode is connected to radio-frequency feed inbound port 220 with one among the antenna element 205a-205d.In this embodiment, PIN diode comprises a single-pole single throw switch to be switched on or switched off kind of thread elements every day (meaning promptly is coupled to radio-frequency feed inbound port 220 or this place's decoupling certainly with among the antenna element 205a-205d each).In one embodiment, a series of control signal (not shown) are in order to each PIN diode of setovering.Along with PIN diode is setovered forward and is conducted a DC electric current, pin diode switch be switched on and respective antenna elements selected.Along with diode reverse biased, pin diode switch is disconnected.In this embodiment, the PIN diode of radio-frequency feed inbound port 220 and antenna element selector is on the side with antenna element 205a-205d of substrate, yet other embodiment separates radio-frequency feed inbound port 220, antenna element selector and antenna element 205a-205d.In certain embodiments, the antenna element selector comprises one or more one poles and throws switch more.In certain embodiments, one or more light-emitting diode (not shown) are as which is switched on or the visual detector that disconnects and be coupled to the antenna element selector among the antenna element 205a-205d.In one embodiment, a light-emitting diode is placed in the circuit so that when selecting respective antenna elements 205 this lumination of light emitting diode with PIN diode.
In certain embodiments, antenna element (for example, antenna element 205a-205d, grounding assembly 225, guider 210 and gain directors 215) is formed by the RF conductive material.For example, antenna element 205a-205d and grounding assembly 225 can be formed by metal or other RF conductive foil.On the opposite flank that is provided at the substrate as shown in Fig. 2 A and Fig. 2 B, every day kind of thread elements 205a-205d and grounding assembly 225 coplines.In certain embodiments, but the antenna element conformal is mounted to the shell of system 100.In such embodiments, the antenna element selector comprise one with antenna element 205a-205d separated structures (not shown).The antenna element selector can be installed on the less relatively PCB, but and this PCB electric power be coupled to antenna element 205a-205d.In certain embodiments, switch P CB directly is soldered to antenna element 205a-205b.
In the embodiment of Fig. 2 B, can comprise that Y shape reflector 235 (for example, reflector 235a) is with the part as grounding assembly 225, thereby (meaning promptly in the frequency response of broadening bent dipole, bandwidth), for example, antenna element 205a combines with the part 230a of grounding assembly 225.For example, in certain embodiments, antenna apparatus 110 is operated in designing with the frequency range at about 2.4GHz to 2.4835GHz, and it is used for the WLAN according to IEEE 802.11 standards.Reflector 235a-235d with the frequency response broadening of each dipole to about 300MHz (centre frequency 12.5%) to 500MHz (centre frequency about 20%).By with among the antenna element 205a-205d more than a work in combination bandwidth that is coupled to the antenna apparatus 110 that radio-frequency feed inbound port 220 produces less than by only being coupled to the bandwidth that radio-frequency feed inbound port 220 is produced with one among the antenna element 205a-205d.For example, with regard to selecting all 4 antenna element 205a-205d generation omnidirectional radiation pattern, the combination frequency response of antenna apparatus 110 is about 90MHz.In certain embodiments, with among the antenna element 205a-205d more than one be coupled to radio-frequency feed inbound port 220 can on whole 802.11 WLAN frequencies, keep with less than the return loss of 10dB coupling, and no matter the number of the antenna element 205a-205d that is connected.
The various radiation diagrams that Fig. 3 A explanation is produced by the different antennae element that is chosen in according to the antenna apparatus 110 of the Fig. 2 in one embodiment of the invention.Fig. 3 A is described in the azimuth radiation diagram on (for example, basically in the plane of the substrate of Fig. 2).Line 300 shows by the directional radiation that is heart substantially of selecting an individual antenna element (for example, antenna element 205a) to be produced.As shown in the figure, antenna element 205a produces the gain of about 5dBi alone.Dotted line 305 shows a similar directional radiation by about 90 degree of the skew of selecting an adjacent antenna elements (for example, antenna element 205b) to be produced.Line 310 shows by selecting two combined radiation pattern that adjacent antenna elements 205a and 205b are produced.In this embodiment, enable two adjacent antenna element 205a and 205b and compare with among independent selection antenna element 205a or the 205b any one and can in the azimuth, produce higher directionality, and gain is about 5.6dBi.
The radiation diagram in the azimuth of Fig. 3 A illustrates how optional selecting antennas element 205a-205d can be made up to produce the various radiation diagrams of antenna apparatus 110.As shown in the figure, the combined radiation pattern that is produced by two or more adjacent antenna elements that are coupled to the radio-frequency feed inbound port (for example, antenna element 205a and antenna element 205b) has more directionality than the radiation diagram of individual antenna element.
Be that easy to understand shows in Fig. 3 A, optional selecting antennas element 205a-205d can be through combination to produce a combined radiation pattern than the directionality difference of the radiation diagram of individual antenna element.For example, select all antenna element 205a-205d can produce the radiation diagram that is essentially omnidirectional of the directionality difference of a radiation diagram that produces than individual antenna element.Similarly, select two or more antenna elements (for example, antenna element 205a on the diagonal of substrate and antenna element 205c) can produce a radiation diagram that is essentially omnidirectional.In this mode, select among the antenna element 205a-205d a subclass or basically all antenna element 205a-205d can produce the radiation diagram that one of antenna apparatus 110 is essentially omnidirectional.
Although not shown in Fig. 3 A, should be appreciated that extra guider (for example, guider 211) and/or gain directors (for example, gain directors 216) be the directional radiation of one or more among the concentrated antenna element 205a-205d in the azimuth further.On the contrary, remove or eliminate the directional radiation of one or more guider 211, gain directors 216 or Y shape reflector 235 meetings one or more among the extended antenna element 205a-205d in the orientation.
Fig. 3 A also shows how antenna apparatus 110 can advantageously be disposed (for example) to reduce in the system 100 of Fig. 1 and the interference in the Radio Link between the long-range receiving node.For example, if long-range receiving node is 0 degree with respect to the azimuth of system 100 (at the center of Fig. 3 A), then corresponding to the antenna element 205a of line 300 in the direction of long-range receiving node, produces with corresponding to the about identical gain of the antenna element 205b of line 305.Yet by alternative line 300 and line 305 as seen, some disturbing is positioned at respect to place, system 100 one-tenths 20 degree azimuth, selects antenna element 205a to compare with selection antenna element 205b to make the about 4dB of interference signals strength reduction.Advantageously, decide on signal environment around system 100, antenna apparatus 110 can be configured (for example, by among the antenna element 205a-205d one or more is switched on or switched off) to reduce the interference in the Radio Link between system 100 and one or more long-range receiving node.
The elevation radiation pattern of the antenna apparatus 110 of Fig. 3 B key diagram 2.In the figure, the plane of antenna apparatus 110 is in the drawings corresponding to the line to 180 degree from 0 degree.Although not shown, should be appreciated that extra guider (for example, guider 211) and/or gain directors (for example, gain directors 216) can be advantageously further concentrated one or more the elevation radiation pattern among the antenna element 205a-205d.For example, in certain embodiments, system 100 can be positioned to have the WLAN of one or more long-range receiving nodes to set up one on the ground at homologous field on the place of a building.Comprise in the antenna apparatus 110 that extra guider 211 and/or gain directors 216 further concentrate on Radio Link substantially the same place, and minimize interference from the RF source on other place of this building.
One alternate embodiment of the antenna apparatus 110 of Fig. 4 A and Fig. 4 B key diagram 1 according to the present invention.On first side of the substrate shown in Fig. 4 A, antenna apparatus 110 comprises a radio-frequency feed inbound port 420 and 6 antenna elements (for example, antenna element 405).Shown in Fig. 4 B, on second side of this substrate, antenna apparatus 110 comprises a grounding assembly 425 in conjunction with a plurality of Y shape reflectors 435.Should be appreciated that the part of grounding assembly 425 (for example, part 430) is configured to antenna element 405 and forms a flechette-type bent dipole.Be similar to the embodiment of Fig. 2, the bent dipole of this gained has a directed radiation diagram.Yet different with the embodiment of Fig. 2,6 antenna element embodiment provide a large amount of possible combined radiation pattern.
Be similar to Fig. 2, the antenna apparatus 110 of Fig. 4 can comprise one or more guider (not shown) and/or one or more gain directors 415 according to circumstances.Guider and gain directors 415 comprise the passive device that the directional radiation of antenna element 405 is concentrated.In one embodiment, for every day kind of thread elements provide guider can make each element produce the additional gain of 1dB to 2dB.Should be appreciated that guider and gain directors 415 can be placed on arbitrary side of substrate.Also should be appreciated that, can comprise that extra guider and/or gain directors are further to concentrate the directional radiation of one or more antenna element 405.
One advantage of the antenna apparatus 110 of Fig. 2 to Fig. 4 is that described antenna element (for example, antenna element 205a-205d) is separately selectable and can be switched on or switched off radiation diagram with the various combinations that form antenna apparatus 110.For example, can select a customized configuration of the interference on the minimized Radio Link of selected antenna element in the system 100 that communicates by letter to the Radio Link of long-range receiving node.If Radio Link stands the interference that (for example) causes owing to the change in other wireless transmission device or the Radio Link between system 100 and long-range receiving node or disturbance, then system 100 difference that can select to select antenna element is configured to change the radiation diagram of antenna apparatus 110 and minimizes interference in the Radio Link.The configuration corresponding to the maximum gain between this system and the long-range receiving node of selected antenna element can be selected by system 100.Perhaps, this system can select selected antenna element corresponding to than the little gain of maximum gain but corresponding to reducing the configuration of disturbing.Perhaps, can select all or all basically antenna element to form the omnidirectional radiation pattern of a combination.
The further advantage of antenna apparatus 110 can utilize the signal of horizontal polarization to advance preferably indoor for the RF signal.Usually, adapter (NIC) is a horizontal polarization.Utilize horizontal polarization signal improvement that antenna apparatus 110 provides to suppress (may up to 20dB) from the interference in the RF source of using general vertical polarized antenna.
Another advantage of system 100 is that antenna apparatus 110 comprises and in the relative conversion at the RF place of fundamental frequency place conversion.Conversion at the RF place means communication device 120 only to be needed on the RF/low-converter.Also need the interface of remarkable simplification between communication device 120 and antenna apparatus 110 in the conversion of RF.For example, no matter selected which day kind of thread elements, antenna apparatus all provides an impedance matching under all configurations of selected antenna element.In one embodiment, no matter selected which day kind of thread elements, the coupling of a return loss less than 10dB all kept in all configurations of the selected antenna element in the frequency range of 802.11 standards.
The further advantage of system 100 is for comparing with the phased array antenna that (for example) has a phaseswitch element of relative complex, and the switch of antenna apparatus 110 is performed only to form combined radiation pattern by being switched on or switched off antenna element.In antenna apparatus 110, do not require phse conversion with the phase matched complexity of enclosing.
The another advantage of the antenna apparatus 110 on the PCB is that antenna apparatus 110 does not require that forming required a plurality of " paster " antenna of omnidirectional antenna desired 3 ties up manufacturing structures.Another advantage is that antenna apparatus 110 can be established in PCB upward so that whole antenna apparatus 110 can be easy to low-cost a manufacturing.One embodiment or the layout of antenna apparatus 110 comprise a square or rectangular shape, so that antenna apparatus 110 is easy to prefabricated (panelized).
According to some preferred embodiments the present invention has been described in this article.Those skilled in the art comprises substitute, correction, change and the equipollent of embodiment described herein according to other embodiments of the invention are easily understood in the understanding of specification of the present invention, graphic research and practice.The above embodiments and preferable feature are interpreted as exemplary, and the present invention defines by appended claims, therefore, present invention resides in that in practicalness of the present invention and the category all substitute, correction, change and equipollent.
Claims (43)
1. antenna assembly, it comprises:
Substrate, second side that it has first side and is arranged essentially parallel to this first side;
A plurality of antenna elements on this first side, kind of thread elements optionally was coupled to communication device and was configured to the first of the dipole of formation through revising every day, and this dipole through revising has the directional radiation with polarization in this plane at this substrate basically; And
Grounding assembly on this second side, this grounding assembly are configured to the second portion that forms this dipole through revising.
2. antenna assembly as claimed in claim 1, it further comprises the antenna element selector that is coupled to kind of thread elements every day, and this antenna element selector is configured to optionally this antenna element is coupled to this communication device.
3. antenna assembly as claimed in claim 2, wherein this antenna element selector comprises PIN diode.
4. antenna assembly as claimed in claim 2, it further comprises the visual detector that is coupled to this antenna element selector, and it is selected that this visual detector is configured to indication which in the described antenna element.
5. antenna assembly as claimed in claim 1, wherein this grounding assembly further is configured to this directional radiation of concentrating this dipole through revising.
6. antenna assembly as claimed in claim 1, wherein this grounding assembly further is configured to the frequency response that broadening is somebody's turn to do the dipole through revising.
7. antenna assembly as claimed in claim 1 wherein in the time will being coupled to this communication device more than an antenna element, can be kept the coupling of a return loss less than 10dB.
8. antenna assembly as claimed in claim 1 wherein should comprise a flechette-type bent dipole by the dipole through revising.
9. antenna assembly as claimed in claim 1, wherein when in described a plurality of antenna elements two or more were coupled to this communication device, described antenna element had an omnidirectional radiation pattern.
10. antenna assembly as claimed in claim 1, wherein this substrate comprise in a rectangular basically surface and the described antenna element each be oriented to basically on the diagonal of this substrate.
11. antenna assembly as claimed in claim 1, wherein this substrate comprises printed circuit board (PCB).
12. antenna assembly as claimed in claim 1, wherein this substrate comprises dielectric, and described antenna element and described grounding assembly are formed on this dielectric.
13. antenna assembly as claimed in claim 1, it further comprises at least one one or more reflectors that are used for described antenna element, and this reflector is configured to the radiation diagram of concentrating this antenna element.
14. antenna assembly as claimed in claim 1, it further comprises at least one one or more Y shape reflectors that are used for described antenna element, and this Y shape reflector is configured to the radiation diagram of concentrating this antenna element.
15. antenna assembly as claimed in claim 1, it further comprises one or more guiders, and each guider is configured to the radiation diagram of concentrating this antenna element.
16. antenna assembly as claimed in claim 1, wherein by the combined radiation pattern that two or more antenna elements produced that is coupled to this communication device than the radiation diagram of individual antenna element than the tool directionality.
17. antenna assembly as claimed in claim 1 is wherein poor than the directionality of the radiation diagram of individual antenna element by the combined radiation pattern that two or more antenna elements that are coupled to this communication device produce.
18. an antenna assembly, it comprises:
A plurality of independent selectable planar antenna element, every day, kind of thread elements had the directional radiation with polarization in this plane of described antenna element basically;
The antenna element selector, it is configured to communication device communication radio frequency signal and optionally in the described antenna element one or more is coupled to this communication device.
19. as the antenna assembly of claim 18, wherein said a plurality of antenna elements are formed by the radio frequency conductive material that is coupled to this antenna element selector.
20. as the antenna assembly of claim 19, wherein this radio frequency conductive material comprises metal forming.
21. as the antenna assembly of claim 18, wherein this antenna element selector comprises the PIN diode that is used for kind of thread elements every day.
22. as the antenna assembly of claim 18, wherein this antenna element selector comprises the single-pole single-throw RF switch that is used for kind of thread elements every day.
23. as the antenna assembly of claim 18, it further comprises the visual detector that is coupled to this antenna element selector, this visual detector is configured to indication kind of thread elements every day and whether optionally is coupled to this communication device.
24. as the antenna assembly of claim 18, wherein said a plurality of antenna elements are configured to conformal and are mounted to the shell that contains this communication device and this antenna assembly.
25. as the antenna assembly of claim 18, one or more in wherein said a plurality of antenna elements comprises the device of the radiation diagram that is used for concentrated this antenna element.
26. as the antenna assembly of claim 18, wherein when in the described antenna element both or both more than when being coupled to this communication device, described a plurality of antenna elements form an omnidirectional radiation pattern.
27. a system, it comprises:
Communication device, it is used to produce radiofrequency signal;
First device, it is used to produce first directional radiation;
Second the device, it is used to produce second directional radiation, this second radiation diagram on direction from this first directed radiation map migration;
Choice device, it is used to receive from this radiofrequency signal of this communication device and optionally this first device and this second device is coupled to this communication device.
28., wherein, can keep the coupling of a return loss less than 10dB when this first device and this second device when all being coupled to this communication device as the antenna assembly of claim 27.
29. as the antenna assembly of claim 27, it further comprises the device that is used to expand this first this directional radiation of installing.
30. as the antenna assembly of claim 27, wherein when with this first device and this second device when being coupled to this communication device, this first device and this second device formation, one omnidirectional radiation pattern.
31. as the antenna assembly of claim 27, it further comprises the device that is used for concentrating this first this directional radiation of installing.
32. as the antenna assembly of claim 27, it further comprises the device that is used to expand this first this directional radiation of installing.
33. a method, it comprises:
In a communication device, produce a radiofrequency signal; And
In a plurality of coplanar antenna elements at least one is coupled to this communication device to produce a directional radiation in this plane of described antenna element basically.
34. method as claim 33, in wherein said a plurality of coplanar antenna element at least one comprises the part of a dipole, and couple in described a plurality of coplanar antenna element this at least one comprise this part of enabling this dipole receiving this radiofrequency signal from this communication device, and enable a grounding assembly to finish this dipole.
35. as the method for claim 34, wherein this dipole comprises a bent dipole.
36. as the method for claim 33, it further comprises in described a plurality of copline antenna elements two or more is coupled to this communication device to produce an omnidirectional radiation pattern.
37. as the method for claim 33, it further comprises and utilizes one or more reflectors to concentrate this directional radiation.
38. as the method for claim 33, it further comprises and utilizes one or more Y shape reflectors to concentrate this directional radiation.
39. as the method for claim 33, it further comprises and utilizes one or more guiders to concentrate this directional radiation.
40., wherein in described a plurality of coplanar antenna elements at least one is coupled to this communication device and comprises the biasing PIN diode as the method for claim 33.
41. as the method for claim 33, it further comprises and is coupled to this communication device to produce one than the direction-sense radiation diagram of tool with at least two in described a plurality of coplanar antenna elements.
42. as the method for claim 33, it further comprises and is coupled to this communication device to produce the relatively poor radiation diagram of a directionality with at least two in described a plurality of coplanar antenna elements.
43. as the method for claim 33, it further comprises and is coupled to this communication device to produce a radiation diagram one on the offset direction of its original orientation with at least two in described a plurality of coplanar antenna elements.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60271104P | 2004-08-18 | 2004-08-18 | |
| US60/603,157 | 2004-08-18 | ||
| US60/602,711 | 2004-08-18 | ||
| US11/010,076 | 2004-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1906805A true CN1906805A (en) | 2007-01-31 |
Family
ID=37675029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580001532 Pending CN1906805A (en) | 2004-08-18 | 2005-07-29 | System and method for transmission parameter control for an antenna apparatus with selectable elements |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1906805A (en) |
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| CN104335417A (en) * | 2011-06-09 | 2015-02-04 | Adc长途电讯有限公司 | Antenna module having integrated radio frequency circuitry |
| CN104471792A (en) * | 2013-06-27 | 2015-03-25 | 华为技术有限公司 | Antenna radiation unit and antenna |
| CN106602237A (en) * | 2016-12-20 | 2017-04-26 | 青岛海信移动通信技术股份有限公司 | Directional diagram reconfigurable antenna device and intelligent communication terminal |
| CN106602236A (en) * | 2016-12-20 | 2017-04-26 | 青岛海信移动通信技术股份有限公司 | Reconfigurable multi-antenna device and intelligent communication terminal |
| CN106602238A (en) * | 2016-12-20 | 2017-04-26 | 青岛海信移动通信技术股份有限公司 | Antenna device capable of reconstructing directional diagram and intelligent communication terminal |
| CN106941212A (en) * | 2017-03-01 | 2017-07-11 | 青岛海信移动通信技术股份有限公司 | Antenna assembly and electronic equipment |
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| CN104335417A (en) * | 2011-06-09 | 2015-02-04 | Adc长途电讯有限公司 | Antenna module having integrated radio frequency circuitry |
| CN104471792B (en) * | 2013-06-27 | 2017-06-20 | 华为技术有限公司 | A kind of antenna radiation unit and antenna |
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| CN106602237B (en) * | 2016-12-20 | 2019-02-12 | 青岛海信移动通信技术股份有限公司 | Directional diagram reconstructable aerial device and intelligent communications terminal |
| CN106602238A (en) * | 2016-12-20 | 2017-04-26 | 青岛海信移动通信技术股份有限公司 | Antenna device capable of reconstructing directional diagram and intelligent communication terminal |
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| CN106602237A (en) * | 2016-12-20 | 2017-04-26 | 青岛海信移动通信技术股份有限公司 | Directional diagram reconfigurable antenna device and intelligent communication terminal |
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