CN100373807C - Wearable diversity antenna apparatus for wireless communication terminal - Google Patents
Wearable diversity antenna apparatus for wireless communication terminal Download PDFInfo
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- CN100373807C CN100373807C CNB2004100403935A CN200410040393A CN100373807C CN 100373807 C CN100373807 C CN 100373807C CN B2004100403935 A CNB2004100403935 A CN B2004100403935A CN 200410040393 A CN200410040393 A CN 200410040393A CN 100373807 C CN100373807 C CN 100373807C
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Abstract
The present invention provides a wearing type diversity antenna device for a wireless communication mobile terminal, which comprises N (N is a positive integer and N is larger than or equal to 1) antenna units, M (M is a positive integer and M is larger than or equal to 1) transition lines (a plurality of the transition lines can be combined into an integral body) corresponding to the antenna units and a wearing type antenna unit carrier (a waistband or a waist bag, etc.), wherein both the antenna units and transition lines are positioned on the wearing type antenna unit carrier; the direction of primary radiation of each antenna unit points to one side which deviates from a human body, and each antenna unit is connected to a transmitter corresponding to each antenna unit or a receiver corresponding to each antenna unit through a feeder device. The present invention has the characteristics of no damage of radiation, no convexity, easy deformation, etc., and the shape of the present invention can be matched with the human body; the present invention can be widely used for wireless communication so as to obtain the effectiveness of polarization diversity of radio wave propagation or angle diversity of radio wave propagation or space diversity of radio wave propagation, or can be used for transmitting or receiving of space-time codes, or can be used for a multiple-input multiple-output (MIMO) wireless communication system.
Description
Technical field
The invention belongs to radio communication diversity antenna technical field, it is particularly related to the wearable diversity antenna technology of wireless communication terminal.
Background technology
Along with developing rapidly of radio communication, its number of users increases day by day, and data service constantly increases, and the wireless communication system of single antenna transmitting-receiving is being faced with severe capacity bottleneck test, must further improve current wireless capability of communication system and quality, seek new technical scheme.MIMO (MIMO) technology is one and utilizes multiple radio communication new technology of penetrating with multiple receive antenna, its data streams is separated into the multichannel sub data flow, after modulation, launch simultaneously through different antennas with identical frequency, beyond-the-horizon communication by wireless channel, these parallel sub-streams may arrive receiver by different paths, received by different reception antennas, receiver can merge the incoming wave signal and recover original data stream.Utilize this technology, wireless system can obtain spatial multiplexing gain and diversity gain, and its efficient parallel data pipe has improved the capacity of mimo system.Traditional radio communication theory is considered as multipath transmisstion causing a kind of interference of wireless signal decline always, and the MIMO technology sends simultaneously and receives by adopting many antennas, can make full use of multipath transmisstion, just as on original frequency range, having set up a plurality of non-interfering, parallel subchannels, and the advanced multiuser detection of utilization, simultaneously transmit user data accurately and efficiently, thereby significantly improve the capacity and the quality of Radio Link.Therefore, the MIMO technology is the important channel of realizing the wireless communication system high-speed transfer.
The jumbo acquisition of mimo system with fading signal uncorrelated or low relevant be prerequisite, promptly require to have abundant electromagnetic scattering body in the wireless communications environment and many antenna elements spacing enough big.Around the user terminal of wireless mobile communications, there are some scattering objects, this makes that the expansion of radio magnetic wave signal angle is bigger, only needs the antenna element spacing of less (less than a wavelength) just to be enough to obtain lower correlation.
Because, wireless propagation environment is a scattering environments that is rich in multipath, when electromagnetic wave was propagated in wireless channel, the signal copy mutual superposition of many propagation paths caused the received signal fluctuating indefinite on the one hand, it is multipath fading, on the other hand, the polarised direction of transmitting signal may cause arriving the polarization of electromagnetic wave of reception antenna and the polarised direction of reception antenna does not match because reflection or scattering twist, signal fluctuation on each polarised direction is indefinite, i.e. polarization mismatch decline.
In addition, terminal antenna is the problem that the user is concerned about very much to the radiation injury of human body, and conventional omnidirectional antenna has caused people's extensive dispute to user's radiation injury.
Simultaneously, the volume of mobile terminal antenna, weight and profile also are the key factors that the user considers, the user expects small size, low cost, low weight, not evagination, easily deformation, is convenient for carrying and is easy to the diversity antenna arrangement conformal with human body.
Therefore, the radio communication new technology has proposed bigger challenge to the design of many antennas.The conventional design of antenna do not have the above-mentioned low correlation of fine solution the design of many antenna elements, the design of antagonism polarization mismatch, reduce problems such as radiation injury design to the terminal use, particularly existing designing technique do not solve portable terminal diversity antenna or the many antennas of portable terminal MIMO with the problem of the conformal design aspect of human body.Antenna Design is improper, may cause obvious increase of transmitting power or transmission range significantly to shorten, even damage electronic equipment.Miniaturization, portability, low radiation hazradial bundle and low cost also are to need the problem that solves in the Antenna Design.A kind of antenna element scheme that can address these problems well is microstrip antenna and planar inverted-F antenna, and preferred group battle array scheme is a kind of wearable diversity antenna of communication mobile terminal.
At the United States Patent (USP) 6 of authorizing people such as Iwai, 670, among 925 B2 " inversed F-shaped antenna unit and the portable radio communication device that adopts inverse-F antenna " (Inverted F-type antenna apparatus and portable radio communicationsapparatus provided with the inverted F-type antenna apparatus), a kind of method and apparatus that makes up the inverse-F antenna unit is disclosed.But this invention only provides the design of antenna element, does not have to consider to be used for the problem of many Antenna Design.At the United States Patent (USP) 6 of authorizing people such as Smith, 426, among 723 B1 " antenna arrangement of MIMO communication system " (Antenna arrangement for multiple input multiple output communications systems), the antenna arrangement of the disclosed MIMO of being used for communication system only is suitable for large-scale terminal, and the antenna element number is too much, does not have to consider to be used for the design of wearable antenna.In authorizing the Chinese patent CN 1411158A of the former Shang Zi of plum etc. " diversity antenna and use its Wireless Telecom Equipment ", there not be consideration to be used for the design of wearable antenna yet.
Summary of the invention
The purpose of this invention is to provide a kind of wearable diversity antenna arrangement that is used for communication mobile terminal, it have low spatial correlation, radiationless injury, not evagination, easily deformation, can with characteristics such as human body is conformal.
For convenience, we at first are defined as follows used term.
Feeder equipment: refer to be used for the device of antenna active cell feed, it can be coaxial cable, parallel wire or microstrip line etc.;
Antenna element: refer to that as the part of antenna system device relatively independent being used to receives or the antenna element of launching electromagnetic wave, it has its corresponding feeder equipment and constitutes a sub-antenna system;
Antenna ground: refer to connect and the metal covering corresponding with antenna element with the high frequency ground wire of antenna electric feedback device;
Antenna element carrier: the object that refers to be used for the supporting antenna unit;
Wearable antenna element carrier: referring to can be conformal with human body and the antenna element carrier that can dress, for example, and waistband, purse, watch chain, armband, epaulet, the helmet (or cap) etc.;
Wearable antenna: refer on wearable antenna element carrier to settle antenna element and the antenna or the aerial array that constitute;
Multiaerial system: refer to an antenna assembly that comprises a plurality of antenna elements;
Diversity antenna: refer to a multiaerial system, it has the antenna diversity function, promptly has the thrin in space diversity, angle diversity and the polarization diversity at least;
Communication mobile terminal: refer to the portable radio communication device of removable position, it comprises portable radiotelephone communication hand-held set, is used for the pocket computer of radio communication etc.
The wearable diversity antenna arrangement of a kind of wireless communication terminal provided by the invention, it is to adopt antenna or the aerial array of settling antenna element and constitute on wearable antenna element carrier, it comprises following two kinds of schemes:
Scheme one:
The wearable diversity antenna of a kind of wireless communication terminal, it comprises an antenna element 1, an antenna ground 2, it is characterized in that it also comprises a wearable antenna element carrier 3, antenna element 1 all is positioned on the wearable antenna element carrier 3 with antenna ground 2, and, antenna element 1 apart from the distance of human body greater than the distance of antenna ground 2 apart from human body, the main radiation direction of antenna element 1 is pointed to and is deviated from a side of human body, when the wearable diversity antenna of described wireless communication terminal is used to launch, described antenna element 1 adopts the quadrature feeder equipment to be connected on the transmitter of wireless communication terminal, when the wearable diversity antenna of described wireless communication terminal is used to receive, described antenna element 1 adopts the quadrature feeder equipment to be connected on the receiver of wireless communication terminal, shown in Fig. 4 and 6 (among the figure, wearable antenna element carrier 3 is respectively a kind of purse and a kind of watch chain).
Scheme two:
The wearable diversity antenna of a kind of wireless communication terminal, it comprises the individual antenna element 1 of N (N is a positive integer), M (M is a positive integer) individual antenna ground 2, it is characterized in that it also comprises a wearable antenna element carrier 3, antenna element 1 all is positioned on the wearable antenna element carrier 3 with antenna ground 2, and, antenna element 1 apart from the distance of human body greater than the distance of antenna ground 2 apart from human body, the main radiation direction of antenna element 1 is pointed to and is deviated from a side of human body, a described N antenna element 1 spatially separates, and N 〉=2, described each antenna element 1 all has antenna ground 2 corresponding with it, and M 〉=1, M=1 represents that described M antenna ground 2 combines antenna ground 2 of formation, 1＜M＜N represents the situation that has a plurality of antennas ground 2 to combine, when the wearable diversity antenna of wireless communication terminal is used to launch, a described N antenna element 1 is connected on the transmitter of wireless communication terminal by feeder equipment, when the wearable diversity antenna of described wireless communication terminal is used to receive, described antenna element 1 is connected on the receiver of wireless communication terminal by feeder equipment, as Fig. 1, Fig. 2, Fig. 3, Fig. 5, (among the figure, wearable antenna element carrier 3 is respectively a kind of waistband shown in Fig. 7 and 8, a kind of purse, a kind of watch chain and a kind of armband).
Need to prove:
In the wearable diversity antenna arrangement of the wireless communication terminal that the present invention provides, described antenna element 1 can adopt the parallel micro-strip paster antenna in the basic antenna ground corresponding with it 2 (at this moment, the antenna ground of antenna element 1 overlaps with described antenna ground 2), or inverse-F antenna (at this moment, the antenna ground of antenna element 1 overlaps with described antenna ground 2), or printed subarray antenna, or snail line, or dielectric resonator antenna, or fractal antenna etc., they pass through microstrip line, devices such as coaxial cable or electromagnetic coupled feed are connected to its corresponding transmitter (for transmission antenna device) or corresponding receiver (for receiving antenna device).Described antenna element 1 is suitable to adopt parallel micro-strip paster antenna in basic corresponding with it antenna ground 2 or planar inverted-F antenna (at this moment, the antenna ground of antenna element 1 overlaps with described antenna ground 2), a little less than their backward radiation, can reduce radiation injury to the user.The suitable especially planar inverted-F antenna that adopts of described antenna element 1, its cross polarization level height is applicable to the wireless propagation environment with multipath.
The metal covering on described formation antenna ground 2 can be done more greatly, to reduce the backward radiation of antenna element 1, thereby reduce the radiation injury to usefulness, described antenna ground 2 can adopt metal knitted cloth sheet or metallic film, with weight reduction, improve its deformability and permeability.
Described wearable antenna element carrier 3, be can be conformal and the antenna element carrier that can dress with human body, for example, waistband, purse, watch chain, armband, epaulet, helmet antenna element carriers such as (or caps), it has not evagination, easily deformation, easily characteristics such as hides.Described wearable antenna element carrier 3 employings preferably and the conformal waistband of human body, because described waistband in a long time can kept stable shape (sub-circular), its radius of circle is enough big, settle a plurality of antenna elements 1 thereon to constitute the circular antenna array, its far-field pattern can cover whole azimuth plane, stable performance can reduce to proofread and correct the workload of antenna system; Because communication mobile terminal hangs on the waistband usually, this makes a plurality of antenna elements 1 be easier to be connected with it; Described waistband is easy to settle antenna ground 2 and away from brain, to the radiationless injury of human brain; Therefore, adopt and the scheme of the conformal waistband of human body, be easier to realize polarization diversity, angle diversity and space diversity reception and the emission of radio transmission as wearable antenna element carrier 3.
Described quadrature feeder equipment is an electromagnetic wave of launching or receive basic orthogonal polarization on same antenna unit, to obtain the polarization diversity benefit, reduces the polarization mismatch decline, improves the user's communications quality, is more suitable for having the wireless propagation environment of multipath.
If the number N of described antenna element 1 is greater than 1, polarised direction (as Fig. 3 and shown in Figure 5) that can the described antenna element 1 of orthogonal configuration to reduce intercoupling and the polarization mismatch decline between a plurality of antenna elements 1, is improved communication quality.
Like this, the wearable diversity antenna arrangement of wireless communication terminal provided by the invention can obtain polarization diversity, angle diversity or the space diversity benefit of radio transmission in terminal; Use diversity antenna arrangement provided by the invention can improve communication quality, reduce radiation injury, reduce the transmitting power of transmitter, the standby and the air time of prolongation wireless communication terminal human body; It is applicable to polarization diversity, angle diversity or the space diversity propagation of radio magnetic wave, it is specially adapted to mimo wireless communication system and carries out Space Time Coding emission or reception, to improve the capacity of wireless communication system, for mimo wireless communication system provides a kind of terminal wearable diversity antenna embodiment.
First kind of diversity antenna scheme that we provide, as Fig. 4 and shown in Figure 6, among the figure, wearable antenna element carrier 3 is respectively a kind of purse (as shown in Figure 4) or a kind of watch chain (as shown in Figure 6), its antenna element 1 can adopt micro-strip paster antenna (at this moment, the antenna ground of antenna element 1 overlaps with described antenna ground 2) as shown in Figure 9.Antenna element 1 all is positioned on the wearable antenna element carrier 3 with antenna ground 2, and, antenna element 1 apart from the distance of human body greater than the distance of antenna ground 2 apart from human body, the main radiation direction of antenna element 1 is pointed to and is deviated from a side of human body, that is, described antenna element 1 can be arranged in a side of described antenna element carrier 3 sensing human bodies with antenna ground 2 or deviate from a side of human body or be embedded into antenna element carrier 3 or lay respectively at the both sides of antenna element carrier 3.Described antenna element 1 is connected respectively to its corresponding transmitter (for transmission antenna device) or corresponding receiver (for receiving antenna device) with little with 102 with 101 by the little of quadrature feed, can obtain good polarization diversity effect, also satisfy mimo wireless communication system to the terminal antenna designing requirement, and compact conformation, easy to process, with low cost.
Second kind of diversity antenna scheme that we provide, as Fig. 1, Fig. 2, Fig. 3, Fig. 5, shown in Fig. 7 and 8, among the figure, wearable antenna element carrier 3 is respectively a kind of waistband (as Fig. 1, Fig. 2 and shown in Figure 3), a kind of purse (as shown in Figure 5), a kind of watch chain (as shown in Figure 7) or a kind of armband (as shown in Figure 8), here, the number N of antenna element 1=4 are (as Fig. 1, Fig. 2, Fig. 3 and shown in Figure 5) or N=2 (as Fig. 7 and shown in Figure 8), the number M=1 on antenna ground 2 is (as Fig. 1, Fig. 2, Fig. 3, Fig. 7 and shown in Figure 8) or M=2 (as shown in Figure 5), the polarised direction of antenna element 1 can orthogonal configuration (as Fig. 3, Fig. 5 and shown in Figure 8), to reduce intercoupling and the polarization mismatch decline between the antenna element 1, antenna element 1 can adopt as Figure 10 and planar inverted-F antenna shown in Figure 11.Antenna element 1 all is positioned on the wearable antenna element carrier 3 with antenna ground 2, and, antenna element 1 apart from the distance of human body greater than the distance of antenna ground 2 apart from human body, the main radiation direction of antenna element 1 is pointed to and is deviated from a side of human body, that is, described antenna element 1 can be arranged in a side of described antenna element carrier 3 sensing human bodies with antenna ground 2 or deviate from a side of human body or be embedded into antenna element carrier 3 or lay respectively at the both sides of antenna element carrier 3.Described antenna element 1 is connected to its corresponding transmitter (for transmission antenna device) or corresponding receiver (for receiving antenna device) by feeder equipment 201, can obtain good polarization diversity and angle diversity effect, also satisfy mimo wireless communication system to the terminal antenna designing requirement, and compact conformation, easy to process, with low cost.
Essence of the present invention be adopt can be conformal with human body and antenna element carrier carrying antenna element that can dress constitute diversity antenna array, and be connected to the wearable diversity antenna arrangement of a kind of wireless communication terminal that its corresponding transmitter (for transmission antenna device) or corresponding receiver (for receiving antenna device) constitute by feeder equipments such as microstrip line or coaxial cables, compare with conventional antenna, the present invention has following beneficial effect:
(1). the spatial coherence between a plurality of antenna elements is very low, can obtain significant diversity.
(2). wearable diversity antenna has polarization diversity, space diversity and angle diversity effect.
(3). stable performance can reduce to proofread and correct the workload of antenna system.
(4). the orientation to communication mobile terminal is insensitive, and radio link performance is stable, good communication quality.
(5). a plurality of antenna elements are easy to connect communication mobile terminal.
(6). a little less than the backward radiation of antenna element, the user there is not radiation hazradial bundle.
(7). the volume of antenna element is little, and is simple in structure, and impedance matching is easy, and debugging is convenient.
(8). need not the specialized substrates material, easily deformation, permeability is good, and is with low cost.
(9). need not special processing technology, be easy to make, processing cost is low.
(10). wearable diversity antenna arrangement is wearable, can be conformal with human body, evagination is not easily hidden, and is not fragile.
(11). wearable antenna element carrier can have multiple choices, and the realization means are flexible.
(12). workable, the common engineers and technicians in this area are easy to grasp and implement.
In sum, the given wearable diversity antenna arrangement of a kind of wireless communication terminal of the present invention carries out the Space Time Coding emission or receives providing a kind of terminal wearable diversity antenna embodiment for polarization of electromagnetic wave diversity, angle diversity or space diversity propagation and mimo wireless communication system in the radio communication.
Description of drawings
What Fig. 1 was that the present invention provides is a kind of wearable diversity antenna schematic diagram of antenna element carrier with a kind of waistband
Among the figure, four antenna elements 1 are the identical rectangular microband paste of polarised direction, the broadside basic horizontal of element antenna 1;
What Fig. 2 was that the present invention provides is the another kind of wearable diversity antenna schematic diagram of antenna element carrier with a kind of waistband
Among the figure, four antenna elements 1 are the identical rectangular microband paste of polarised direction, and the broadside of element antenna 1 substantially vertically greatly;
What Fig. 3 was that the present invention provides is another wearable diversity antenna schematic diagram of antenna element carrier with a kind of waistband
Among the figure, four antenna elements 1 are the rectangular microband paste of polarised direction quadrature;
What Fig. 4 was that the present invention provides is a kind of wearable diversity antenna schematic diagram of antenna element carrier with a kind of purse
Wherein, antenna element 1 is for having the rectangular microband paste of quadrature feed;
What Fig. 5 was that the present invention provides is the another kind of wearable diversity antenna schematic diagram of antenna element carrier with a kind of purse
Among the figure, four antenna elements 1 are the rectangular microband paste of polarised direction quadrature;
What Fig. 6 was that the present invention provides is a kind of wearable diversity antenna schematic diagram of antenna element carrier with a kind of watch chain
Wherein, antenna element 1 is for having the rectangular microband paste of quadrature feed;
What Fig. 7 was that the present invention provides is the another kind of wearable diversity antenna schematic diagram of antenna element carrier with a kind of watch chain
Wherein, two antenna elements 1 are rectangular microband paste or planar inverted-F antenna;
What Fig. 8 was that the present invention provides is a kind of wearable diversity antenna schematic diagram of antenna element carrier with a kind of armband
Among the figure, two antenna elements 1 are the rectangular microband paste of polarised direction quadrature;
In Fig. 1～Fig. 8, the 1st, antenna element, the 2nd, the antenna ground (adopted metal knitted cloth sheet) corresponding, the 3rd, antenna element carrier with antenna element 1;
Fig. 9 is a kind of antenna element schematic diagram of the present invention
Wherein, antenna element 1 is the rectangular microstrip antenna with quadrature feed, and 101 and 102 is little bands of feed of two quadratures;
Figure 10 is an another kind of antenna element schematic diagram of the present invention
Figure 11 is the vertical view of antenna element shown in Figure 10
In Figure 10 and Figure 11, antenna element 1 is a planar inverted-F antenna, the 2nd, and antenna ground, the 201st, the feeder equipment of antenna element 1, the 202nd, the shorting stub between antenna element 1 and its respective antenna ground 2;
Figure 12 is that antenna scheme shown in Figure 8 is in the far-field pattern test result that adopts an antenna element under the antenna element shown in Figure 9
Wherein, curve 121 is direction of an electric field figure, and curve 122 is cross polarization directional diagrams:
Figure 13 is that antenna scheme shown in Figure 5 is in the far-field pattern test result that adopts an antenna element under the antenna element shown in Figure 9
Wherein, curve 131 is E face directional diagrams, and curve 132 is H face directional diagrams;
Figure 14 is that antenna scheme shown in Figure 8 is in the far-field pattern test result that adopts an antenna element under the antenna element shown in Figure 9
Wherein, curve 141 is E face directional diagrams, and curve 144 is cross polarization directional diagrams of E face directional diagram, the 142nd, and H face directional diagram, the 143rd, the cross polarization directional diagram of H face directional diagram.
Figure 15 is Figure 10 and a kind of planar inverted-F antenna shown in Figure 11 far-field pattern of electric field θ component in azimuth plane during as antenna element
Figure 16 is that Figure 10 and a kind of planar inverted-F antenna shown in Figure 11 electric field θ component during as antenna element exists
Far-field pattern in the plane
Figure 17 is a Figure 10 and a kind of planar inverted-F antenna shown in Figure 11 electric field during as antenna element
Component exists
Far-field pattern in the plane
Figure 18 is that Figure 10 and a kind of planar inverted-F antenna shown in Figure 11 electric field θ component during as antenna element exists
Far-field pattern in the plane
When antenna was used to receive, described antenna element 1 was connected to by feeder equipment on the receiver of wireless communication terminal, and feeder equipment does not draw among the figure.
The far-field pattern of antenna element 1 is seen the far-field pattern of electric field θ component in azimuth plane shown in Figure 15 respectively, and electric field θ component shown in Figure 16 exists
Far-field pattern in the plane, electric field shown in Figure 17
Component exists
Far-field pattern in the plane, electric field θ component shown in Figure 180 exists
Far-field pattern in the plane.The radiation far-field pattern of the antenna element 1 that its quadrature is placed has similarly just rotated 90 ° (normal direction of antenna element 1 is a level) here, around aerial radiation sheet normal direction.
These directional diagrams show, a little less than the backward radiation of antenna element, can reduce the radiation injury to the user, and its cross polarization level height is applicable to the wireless propagation environment with multipath.This embodiment is just disposing antenna element, far-field pattern shows, the antenna arrangement of present embodiment has reduced intercoupling and the polarization mismatch decline between a plurality of antenna elements, can realize polarization diversity, space diversity and angle diversity in the radio communication in terminal, improve communication quality, reduce transmitting power, prolongation terminal standby and the air time of transmitter.
In the present embodiment, the broadside of planar inverted-F antenna unit 1 be level or vertical greatly, but the type that is appreciated that the antenna element among the present invention is not limited to this with settling direction, can also be other antenna element types, antenna element number and arrangement direction, four antenna elements 1 as shown in Figure 1 are the identical rectangular microband paste of polarised direction, the broadside basic horizontal of element antenna 1, four antenna elements 1 shown in Figure 2 are the identical rectangular microband paste of polarised direction, and the broadside of element antenna 1 substantially vertically greatly etc.
Embodiment 2: have four antenna elements and be a kind of wearable diversity antenna of antenna element carrier with a kind of purse
Fig. 5 is to be a kind of wearable diversity antenna schematic layout pattern of antenna element carrier as second embodiment provided by the invention with a kind of purse, it has the rectangular microband paste antenna unit of four polarised direction quadratures, among the figure, the 1st, antenna element, the 2nd, the antenna ground (adopted metal knitted cloth sheet) corresponding, the 3rd, antenna element carrier (a kind of purse) with antenna element 1.
Adopt microband antenna unit shown in Figure 9 among this embodiment, antenna element 1 is by little 102 feeds of being with, and littlely is with 101 not use.The far-field pattern of its antenna element is met E direction Figure 131 shown in Figure 13 and H face direction Figure 132 respectively.
These directional diagrams show, a little less than the backward radiation of antenna element, can reduce the radiation injury to the user.
In the present embodiment, the broadside of antenna element 1 be level or vertical greatly, but the type that is appreciated that the antenna element among the present invention is not limited to this with settling direction, can also be other antenna element types, antenna element number and arrangement direction, antenna element as shown in Figure 4 with quadrature feed, quadrature feed antenna element shown in Figure 9, antenna element also can adopt as Figure 10 and planar inverted-F antenna shown in Figure 11.
Embodiment 3: have two antenna elements and be a kind of wearable diversity antenna of antenna element carrier with a kind of watch chain
Fig. 7 is to be a kind of wearable diversity antenna schematic layout pattern of antenna element carrier as the 3rd embodiment provided by the invention with a kind of watch chain, it has two antenna elements, among the figure, the 1st, antenna element, the 2nd, the antenna ground (adopted metal knitted cloth sheet) corresponding, the 3rd, antenna element carrier (a kind of watch chain) with antenna element 1.
The far-field pattern of antenna element 1 is seen the far-field pattern of electric field θ component in azimuth plane shown in Figure 15 respectively, and electric field θ component shown in Figure 16 exists
Far-field pattern in the plane, electric field shown in Figure 17
Component exists
Far-field pattern in the plane, electric field θ component shown in Figure 180 exists
Far-field pattern in the plane.The radiation far-field pattern of the antenna element 1 that its quadrature is placed has similarly just rotated 90 ° around aerial radiation sheet normal direction
These directional diagrams show, a little less than the backward radiation of antenna element, can reduce the radiation injury to the user, and its cross polarization level height is applicable to the wireless propagation environment with multipath.Far-field pattern shows, the antenna arrangement of present embodiment has reduced intercoupling and the polarization mismatch decline between antenna element, can realize polarization diversity, space diversity and angle diversity in the radio communication in terminal, improve communication quality, reduce transmitting power, prolongation terminal standby and the air time of transmitter.
In the present embodiment, the broadside of two planar inverted-F antenna unit 1 is a level, but the type that is appreciated that the antenna element among the present invention is not limited to this with settling direction, can also be other antenna element types, antenna element number and arrangement direction.
Embodiment 4: have two antenna elements and be a kind of wearable diversity antenna of antenna element carrier with a kind of armband
Fig. 8 is to be a kind of wearable diversity antenna schematic layout pattern of antenna element carrier as the 4th embodiment provided by the invention with a kind of armband, it has two antenna element orthogonal configuration, among the figure, the 1st, antenna element, the 2nd, the antenna ground (adopted metal knitted cloth sheet) corresponding, the 3rd, antenna element carrier (a kind of armband) with antenna element 1.
Adopt microband antenna unit shown in Figure 9 among this embodiment, antenna element 1 is by little 102 feeds of being with, and littlely is with 101 not use.Far-field pattern meeting E direction Figure 121 shown in Figure 12 of its antenna element, its cross polarization is shown in 122.Another test result meeting E direction Figure 141 shown in Figure 14, its cross polarization is shown in 144, and H face directional diagram is 142, and its cross polarization is 143.
These directional diagrams show, a little less than the backward radiation of antenna element, can reduce the radiation injury to the user.
In the present embodiment, two antenna elements 1 adopt the rectangular microband paste of orthogonal configuration, but the type that is appreciated that the antenna element among the present invention is not limited to this with settling direction, can also be other antenna element types, number and other arrangement directions, as the quadrature feed of Fig. 9 or planar inverted-F antenna unit shown in Figure 11.
More than, provide description of the invention so that their easy to understand and utilization the present invention to those skilled in the art that.Corresponding those skilled in the art that are conspicuous to the various changes of these embodiment, and need not performing creative labour.Therefore, the present invention not only is limited to method and apparatus described here, but the scope consistent with described claim.
Claims (6)
1. wearable diversity antenna of wireless communication terminal, it comprises an antenna element (1), an antenna ground (2), it is characterized in that it also comprises a wearable antenna element carrier (3), antenna element (1) all is positioned on the wearable antenna element carrier (3) with antenna ground (2), and, antenna element (1) apart from the distance of human body greater than antenna ground (2) distance apart from human body, the main radiation direction of antenna element (1) is pointed to and is deviated from a side of human body, when the wearable diversity antenna of described wireless communication terminal is used to launch, described antenna element (1) adopts the quadrature feeder equipment to be connected on the transmitter of wireless communication terminal, when the wearable diversity antenna of described wireless communication terminal was used to receive, described antenna element (1) adopted the quadrature feeder equipment to be connected on the receiver of wireless communication terminal.
2. wearable diversity antenna of wireless communication terminal, it comprises N antenna element (1), N is a positive integer, M antenna ground (2), M is a positive integer, it is characterized in that it also comprises a wearable antenna element carrier (3), antenna element (1) all is positioned on the wearable antenna element carrier (3) with antenna ground (2), and, antenna element (1) apart from the distance of human body greater than antenna ground (2) distance apart from human body, the main radiation direction of antenna element (1) is pointed to and is deviated from a side of human body, a described N antenna element (1) spatially separates, and N 〉=2, described each antenna element (1) all has antenna ground (2) corresponding with it, and M 〉=1, M=1 represents that described M antenna ground (2) combines a formation antenna ground (2), 1＜M＜N represents the situation that has a plurality of antennas ground (2) to combine, when the wearable diversity antenna of described wireless communication terminal is used to launch, a described N antenna element (1) is connected on the transmitter of wireless communication terminal by feeder equipment, when the wearable diversity antenna of described wireless communication terminal was used to receive, described antenna element (1) was connected on the receiver of wireless communication terminal by feeder equipment.
3. the wearable diversity antenna of a kind of wireless communication terminal as claimed in claim 1 or 2 is characterized in that described wearable antenna element carrier (3) is a kind of waistband or a kind of purse or a kind of watch chain or a kind of armband or a kind of epaulet or a kind of helmet or a kind of cap.
4. the wearable diversity antenna of a kind of wireless communication terminal as claimed in claim 1 or 2, it is characterized in that described antenna element (1) adopts a kind of micro-strip paster antenna or a kind of inverse-F antenna or a kind of printed subarray antenna or a kind of snail line or a kind of dielectric resonator antenna or a kind of fractal antenna, described antenna element (1) is by microstrip line or coaxial cable or slot electromagnetic coupled feed.
5. the wearable diversity antenna of a kind of wireless communication terminal as claimed in claim 1 or 2 is characterized in that described antenna ground (2) adopts a kind of metal knitted cloth sheet or metallic film.
6. the wearable diversity antenna of a kind of wireless communication terminal as claimed in claim 1 or 2 is characterized in that described antenna element (1) and antenna ground (2) are arranged in a side of described antenna element carrier (3) sensing human body or deviate from a side of human body or be embedded into antenna element carrier (3) or lay respectively at the both sides of antenna element carrier (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100403935A CN100373807C (en) | 2004-08-09 | 2004-08-09 | Wearable diversity antenna apparatus for wireless communication terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100403935A CN100373807C (en) | 2004-08-09 | 2004-08-09 | Wearable diversity antenna apparatus for wireless communication terminal |
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| Publication Number | Publication Date |
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| CN1734833A CN1734833A (en) | 2006-02-15 |
| CN100373807C true CN100373807C (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100403935A Expired - Fee Related CN100373807C (en) | 2004-08-09 | 2004-08-09 | Wearable diversity antenna apparatus for wireless communication terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898769B (en) * | 2014-03-03 | 2018-08-10 | 联想(北京)有限公司 | A kind of wearable electronic equipment |
| CN105657717A (en) * | 2014-11-12 | 2016-06-08 | 中兴通讯股份有限公司 | Wireless communication method, wearable device, mobile terminal and system |
| CN105990662A (en) * | 2015-01-30 | 2016-10-05 | 深圳光启尖端技术有限责任公司 | Communication antenna, antenna system and communication device |
| CN105119053B (en) * | 2015-08-19 | 2018-03-09 | 南京邮电大学 | A kind of deversity scheme of new wearable antenna |
| CN109211447A (en) * | 2017-07-09 | 2019-01-15 | 东北林业大学 | A kind of passive and wireless automobile C-EPS system torque measuring device |
| GB201712326D0 (en) | 2017-08-01 | 2017-09-13 | Univ Southampton | Wearable antenna and intra-uterine monitoring system |
| JP6928118B2 (en) * | 2018-01-22 | 2021-09-01 | 京セラ株式会社 | Wireless communication equipment and communication systems |
| LU100837B1 (en) * | 2018-06-12 | 2019-12-12 | Iee Sa | Antenna array system for monitoring vital signs of people |
| CN111029731B (en) * | 2019-12-30 | 2021-08-20 | 维沃移动通信有限公司 | Wearable equipment |
| CN111541012A (en) * | 2020-04-30 | 2020-08-14 | 天津师范大学 | Wearable antenna array feed network system |
| CN112952386B (en) * | 2021-01-29 | 2023-04-14 | 北京邮电大学 | Wearable antenna |
| CN113067126B (en) * | 2021-03-11 | 2023-03-21 | 中国人民解放军空军通信士官学校 | Wearable short wave communication antenna |
| CN113839200A (en) * | 2021-10-09 | 2021-12-24 | 北京悦米科技有限公司 | Antenna capable of overcoming hand holding influence and being little influenced by environment |
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| US6670925B2 (en) * | 2001-06-01 | 2003-12-30 | Matsushita Electric Industrial Co., Ltd. | Inverted F-type antenna apparatus and portable radio communication apparatus provided with the inverted F-type antenna apparatus |
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| CN1179663A (en) * | 1996-05-03 | 1998-04-22 | Eta草图制造公司 | Portable device for receiving and/or transmitting radio-transmitted messages comprising inductive capacitive antenna |
| US6426723B1 (en) * | 2001-01-19 | 2002-07-30 | Nortel Networks Limited | Antenna arrangement for multiple input multiple output communications systems |
| US6670925B2 (en) * | 2001-06-01 | 2003-12-30 | Matsushita Electric Industrial Co., Ltd. | Inverted F-type antenna apparatus and portable radio communication apparatus provided with the inverted F-type antenna apparatus |
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| CN1734833A (en) | 2006-02-15 |
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