CN109478713A

CN109478713A - Wireless transmitter, antenna element and base station

Info

Publication number: CN109478713A
Application number: CN201680087719.0A
Authority: CN
Inventors: 赵书晨; 龙科; 刘传; 邓长顺
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-07-27
Filing date: 2016-07-27
Publication date: 2019-03-15
Anticipated expiration: 2036-07-27
Also published as: EP3487000A4; EP3487000A1; WO2018018473A1; CN112397897A; CA3031996A1; MX2019001191A; CN112397897B; EP3487000B1; CN109478713B; CA3031996C

Abstract

The invention discloses a kind of wireless transmitter, antenna element and base stations, belong to the communications field.The radio receiving transmitting module includes: metallic carrier and at least one antenna element that the metallic carrier edge is arranged in, and each antenna element includes feed structure and radiation patch；The feed structure and the radiation patch are non-centrosymmetric structure；The radiation patch is fed by the feed structure, the radiation patch ground connection.When the present invention solves the center that antenna element is not disposed on metallic carrier, the poor problem of directional diagram circularity.The embodiment of the present invention is used for the information transmit-receive of wireless transmitter.

Description

Wireless transmitter, antenna element and base station

Technical field

The present invention relates to the communications field, in particular to a kind of wireless transmitter, antenna element and base station.

Background technique

In mobile communication system, wireless transmitter is a kind of common signal transmitting and receiving structure, specifically includes that the structures such as antenna element, medium substrate, screening cover and metallic carrier.For a wide range of covering for realizing wireless transmitter signal, the antenna element configured on wireless transmitter is usually omnidirectional antenna units, omnidirectional antenna units show as 360 ° of homogeneous radiations on figure in the horizontal direction, namely usually described is non-directional, and the wave beam of one fixed width is shown as on height pattern.

Traditional wireless transmitter, if being equipped with an omnidirectional antenna units, usually the omnidirectional antenna units are arranged in the center of metallic carrier (metallic carrier is equivalent to reference to ground), such as the omnidirectional antenna units are symmetrically arranged on the screening cover of wireless transmitter, and the radiation fin of antenna element or radiator are designed as central symmetry (also referred to as rotational symmetry) structure, in addition to this, also need for the antenna element of symmetrical structure to be placed in the center of metallic carrier, guarantee that antenna element has similar radiation characteristic on the section for be parallel to screening cover by the symmetry in structure, to realize high circularity performance.

But, if antenna element is not disposed on the center of metallic carrier, the antenna element not can guarantee then for the symmetry of metallic carrier, the non-centrosymmetry distribution of earth-current is thus inevitably will cause, lead to the deterioration of the directional diagram circularity of the antenna element.

Summary of the invention

When being not disposed on the center of metallic carrier to solve antenna element, the poor problem of directional diagram circularity, the embodiment of the invention provides a kind of wireless transmitter, antenna element and base stations.The technical solution is as follows:

In a first aspect, providing a kind of wireless transmitter, comprising:

At least one antenna element of metallic carrier and the edge that the metallic carrier is set, each antenna element includes feed structure and radiation patch, the edge refers to the non-central place of metallic carrier, it that is to say when metallic carrier is center symmetrical structure, antenna element is located at its non-central place, when metallic carrier is When non-centrosymmetric structure, center is not present, then antenna element is located on metallic carrier；

The feed structure and the radiation patch are non-centrosymmetric structure；

The radiation patch is fed by the feed structure, the radiation patch ground connection.

Wireless transmitter provided in an embodiment of the present invention, it is non-centrosymmetric structure that the feed structure of each antenna element and radiation patch at least one antenna element of metallic carrier edge, which is arranged in, reference ground of the metallic carrier as antenna element, it is also non-centrosymmetrical relative to each antenna element, so for each antenna element, the distribution of non-centrosymmetrical radiation patch and the non-centrosymmetrical earth-current with reference to caused by ground can form opposite central symmetry, compared to the omnidirectional antenna units in traditional wireless transmitter, the directional diagram circularity of the antenna element of wireless transmitter provided in an embodiment of the present invention is preferable in broadband range, therefore, effectively improve directional diagram circularity.

Optionally, there are gap, the feed structure and the radiation patch to pass through the aperture-coupled between the feed structure and the radiation patch.

Wireless transmitter provided in an embodiment of the present invention, feed structure pass through aperture-coupled with radiation patch is stated, can effectively expand the bandwidth of antenna element.

Optionally, feed structure can be there are many form:

In the first possible implementation, the feed structure is E-shaped structure, the E-shaped structure is arranged at intervals on the first horizontal stripe shape structure composition on the described first vertical strip structure by the first vertical strip structure and 3 one end, the opening of the E-shaped structure deviates from the radiation patch, the length of the first horizontal strip structure among the E-shaped structure is greater than the length of other 2 the first horizontal strip structures, and the other end for being located at the first horizontal strip structure among the E-shaped structure is connect with the feed of the metallic carrier, the first vertical strip structure and the radiation patch form the gap.The feed namely feed source, can be the signal transmission port of metallic carrier, usually connect with the input/output port of transceiver.

In second of possible implementation, the feed structure is T-shaped structure, the T-shaped structure is by the second vertical strip structure and 1 one end from outwardly extending second horizontal stripe shape structure composition in the middle part of the described second vertical strip structure, the other end of the second horizontal strip structure is connect with the feed of the metallic carrier, and the second vertical strip structure and the radiation patch form the gap.

In the third possible implementation, the feed structure is the integral structure of arcuate structure and strip structure composition, one end of the strip structure is connect with the feed of the metallic carrier, the other end is connect with the arcuate structure, the radiation patch is provided with curved opening close to the side of the feed structure, the arcuate structure is located in the curved opening, and forms the gap with the curved opening.

In 4th kind of possible implementation, the feed structure is arc strip structure, the feed structure Outside connect with the feed of the metallic carrier, the inside of the feed structure and the radiation patch form the gap.

Optionally, the setting face of the feed structure antenna element in parallel, the feed structure are connect by feeding foot with the feed of the metallic carrier, the setting face for feeding the vertical antenna element of foot.

The feed foot can not only support feed structure, can also realize effective feed of feed structure.

Further, the antenna element further includes medium substrate, and the radiation patch and the feed structure are arranged on the medium substrate.

Medium substrate can effectively carry radiation patch and feed structure, guarantee that the setting face of radiation patch and antenna element generates gap, to realize electromagnetic oscillation between the two.

Optionally, the antenna element further include:

Parasitic structure, the parasitic structure are located on the face parallel with the setting face of the antenna element, the parasitic structure ground connection.By increasing parasitic structure, the bandwidth of antenna element can be further expanded.

Optionally, there are gap, the parasitic structure and the radiation patch to pass through the gap couple feed between the parasitic structure and the radiation patch.By gap couple feed the bandwidth for expanding antenna element can be effectively ensured under the premise of occupying lesser volume in parasitic structure and radiation patch.

On the basis of the antenna element includes parasitic structure, optionally, the antenna element can also include: the first grounding leg, first grounding leg one end is connect with the parasitic structure, the other end is connect with the metallic carrier, the setting face of the vertical antenna element of first grounding leg, the parasitic structure are grounded by the metallic carrier.The effective grounding of parasitic structure may be implemented in first grounding leg.

Optionally, the antenna element can also include:

Second grounding leg, second grounding leg one end are connect with the radiation patch, and the other end is connect with the metallic carrier, and the setting face of the vertical antenna element of second grounding leg, the radiation patch is grounded by the metallic carrier.

In one possible implementation, the side of the radiation patch is provided with second grounding leg, and the other side of the radiation patch is provided with the feed structure.

In alternatively possible implementation, second grounding leg totally 2,2 second grounding legs are symmetricly set on the two sides of the radiation patch.

In practical application, the feed structure is axially symmetric structure, the symmetry axis of the symmetry axis of the feed structure and 2 second grounding legs.

Optionally, the parasitic structure is non-centrosymmetric structure.When radiation patch, feed structure and parasitic structure are that non-centrosymmetric structure can make the antenna element be not disposed on the center of metallic carrier, The characteristic for still guaranteeing the high circularity of antenna element, improves the general applicability of antenna element.

Exemplary, the parasitic structure is sector structure, and the radiation patch is semicircular configuration, and the center of circle of the center of circle of the radiation patch and the parasitic structure is located at the same side of the radiation patch.

It should be pointed out that the radiation patch in the antenna element of not set parasitic structure may be semicircular configuration or other non-centrosymmetric structures.The embodiment of the present invention is not construed as limiting this.

Optionally, mounting medium substrate and screening cover have been sequentially overlapped on the metallic carrier, the antenna element is arranged on the screening cover, and is located at the edge of the metallic carrier, and the mounting medium substrate is used to carry the electronic component in the metallic carrier.

Second aspect provides a kind of antenna element, comprising:

Feed structure and radiation patch；

The feed structure and the radiation patch are non-centrosymmetric structure；

In the embodiment of the present invention, when the radiation patch and feed structure of antenna element are that non-centrosymmetric structure can make the antenna element be not disposed on the center of metallic carrier, the characteristic for still guaranteeing the high circularity of antenna element, improves the general applicability of antenna element.

Antenna element provided in an embodiment of the present invention, feed structure pass through aperture-coupled with radiation patch is stated, can effectively expand the bandwidth of antenna element.

Optionally, feed structure can be there are many form:

In the first possible implementation, the feed structure is E-shaped structure, the E-shaped structure is arranged at intervals on the first horizontal stripe shape structure composition on the described first vertical strip structure by the first vertical strip structure and 3 one end, the opening of the E-shaped structure deviates from the radiation patch, the length of the first horizontal strip structure among the E-shaped structure is greater than the length of other 2 the first horizontal strip structures, and the other end of the first horizontal strip structure among the E-shaped structure and the feed of metallic carrier connect, the first vertical strip structure and the radiation patch form the gap.

In second of possible implementation, the feed structure is T-shaped structure, the T-shaped structure is by the second vertical strip structure and 1 one end from outwardly extending second horizontal stripe shape structure composition in the middle part of the described second vertical strip structure, the other end of the second horizontal strip structure and the feed of metallic carrier connect, and the second vertical strip structure and the radiation patch form the gap.

In the third possible implementation, the feed structure is the one of arcuate structure and strip structure composition Body structure, one end of the strip structure and the feed of metallic carrier connect, and the other end is connect with the arcuate structure, and the radiation patch is provided with curved opening close to the side of the feed structure, the arcuate structure is located in the curved opening, and forms the gap with the curved opening.

In 4th kind of possible implementation, the feed structure is arc strip structure, and the outside of the feed structure is connect with the feed of the metallic carrier, and the inside of the feed structure and the radiation patch form the gap.

Optionally, the setting face of the feed structure antenna element in parallel, the feed structure are connected by the feed of feed foot and metallic carrier, the setting face of the vertical antenna element of the feed foot.

Optionally, the antenna element further include:

On the basis of the antenna element includes parasitic structure, optionally, the antenna element further include:

First grounding leg, first grounding leg one end are connect with the parasitic structure, and the other end is connect with metallic carrier, and the setting face of the vertical antenna element of first grounding leg, the parasitic structure is grounded by the metallic carrier.

Optionally, the antenna element further include:

Second grounding leg, second grounding leg one end are connect with the radiation patch, and the other end is connect with metallic carrier, and the setting face of the vertical antenna element of second grounding leg, the radiation patch is grounded by the metallic carrier.

Optionally, the parasitic structure is non-centrosymmetric structure.When radiation patch, feed structure and parasitic structure are that non-centrosymmetric structure can make the antenna element be not disposed on the center of metallic carrier, still guarantee the characteristic of the high circularity of antenna element, improve the general applicability of antenna element.

The third aspect provides a kind of base station, the wireless transmitter including any description above.

Wireless transmitter provided in an embodiment of the present invention, in antenna element and base station, it is non-centrosymmetric structure that the feed structure of each antenna element and radiation patch at least one antenna element of metallic carrier edge, which is arranged in, reference ground of the metallic carrier as antenna element, it is also non-centrosymmetrical relative to each antenna element, so for each antenna element, the distribution of non-centrosymmetrical radiation patch and the non-centrosymmetrical earth-current with reference to caused by ground can form opposite central symmetry, compared to the omnidirectional antenna units in traditional wireless transmitter, the directional diagram circularity of the antenna element of wireless transmitter provided in an embodiment of the present invention is preferable in broadband range, therefore, effectively improve directional diagram circularity.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, the accompanying drawings required for describing the embodiments of the present invention are briefly described below, apparently, drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, other attached drawings be can also be obtained according to these attached drawings.

Fig. 1 is a kind of structural schematic diagram of the common omnidirectional antenna units provided in the related technology；

Fig. 2 is a kind of structural schematic diagram of the common wireless transmitter provided in the related technology；

Fig. 3 is a kind of current distribution schematic diagram of the common omnidirectional antenna units provided in the related technology；

Fig. 4 is the current distribution schematic diagram of the omnidirectional antenna units in the wireless transmitter that Fig. 2 is provided；

Fig. 5 is the analogous diagram of the directional diagram of the omnidirectional antenna units in wireless transmitter shown in Fig. 4；

A kind of structural schematic diagram for wireless transmitter that Fig. 6 one illustrative examples of the present invention provide；

Fig. 7 is a kind of part-structure signal for wireless transmitter that an illustrative examples of the invention provide Figure；

Fig. 8 is the partial structure diagram for another wireless transmitter that an illustrative examples of the invention provide；

Fig. 9 is the partial structure diagram for another wireless transmitter that an illustrative examples of the invention provide；

Figure 10 is a kind of partial structure diagram for wireless transmitter that another illustrative examples of the present invention provide；

Figure 11 is the partial structure diagram for another wireless transmitter that another illustrative examples of the present invention provide；

Figure 12 is the partial structure diagram for another wireless transmitter that another illustrative examples of the present invention provide；

Figure 13 is the partial structure diagram for another wireless transmitter that the another illustrative examples of the present invention provide；

Figure 14 is the left view of wireless transmitter shown in Fig. 7；

Figure 15 is the top view of wireless transmitter shown in Fig. 7；

Figure 16 be Fig. 7 in wireless transmitter in a certain antenna element directional diagram analogous diagram；

Figure 17 is the partial structure diagram for another wireless transmitter that the another illustrative examples of the present invention provide；

Figure 18 is the partial structure diagram for another wireless transmitter that the another illustrative examples of the present invention provide；

Figure 19 is a kind of partial structure diagram for wireless transmitter that another illustrative examples of the invention provide；

Figure 20 is the partial structure diagram for another wireless transmitter that another illustrative examples of the invention provide.

Specific embodiment

To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing, embodiment of the present invention is described further in detail.

Fig. 1 is a kind of common omnidirectional antenna units 10 provided in the related technology, which is properly termed as wideband monopole sub-antenna unit, as shown in Figure 1, the omnidirectional antenna units 10 include:

Radiation fin 11, one end are connect with the radiation fin 11, the grounding probe 12, Yi Jikui of other end ground connection Electric probe 13,13 one end of feed probes ground connection, the other end and radiation fin 11 form gap H, and radiation fin 11 and feed probes 13 are fed by gap H, and wherein feeding point is A point.

Since existing omnidirectional antenna units are stereochemical structure, the wireless transmitter for then including omnidirectional antenna units can be as shown in Figure 2, Fig. 2 is a kind of structural schematic diagram of traditional wireless transmitter 20, the wireless transmitter 20 includes: at least one omnidirectional antenna units 10, mounting medium substrate (also referred to as radiation veneer) 201, screening cover 202 and metallic carrier 203, wherein, metallic carrier 203 is shell, mounting medium substrate 201 is arranged in the metallic carrier 203, screening cover 202 buckles above the metallic carrier, omnidirectional antenna units 10 are formed on screening cover 202 or metallic carrier 203, Fig. 2 is to be formed on screening cover 202 to be illustrated with omnidirectional antenna units 10.As seen from Figure 2, omnidirectional antenna units 10 are the stereochemical structures individually processed, and are arranged on screening cover 202 or metallic carrier 203 after completing the process.

In general, in the structure of wireless transmitter there are three symmetry relevant to circularity: the symmetry of the symmetry of antenna element ontology, the symmetry of installation site and metallic carrier.If these three symmetry meet simultaneously, that is, the omnidirectional antenna units of a central symmetry (also referred to as rotational symmetry) are symmetrically placed on a centrosymmetric metallic carrier, and the circularity of wireless transmitter is usually preferable.But if some in these three symmetry is destroyed, that circularity can generally deteriorate.In practical application, due to the convenience of processing, metallic carrier is center symmetrical structure, such as square structure or circular configuration, the screening cover buckled thereon are also centrosymmetric structure.Optionally, metallic carrier can centered on symmetrical prismatic structures, for beauty, edge can have rounded corner or bevelling.

Traditional wireless transmitter, if being equipped with an omnidirectional antenna units, the omnidirectional antenna units are usually arranged in the center of metallic carrier, such as the omnidirectional antenna units are symmetrically arranged on the screening cover of wireless transmitter, and the radiation fin of antenna element or radiator are designed as centrosymmetric structure, in addition to this, with also needing for the antenna element of symmetrical structure the to be placed in reference center of (as marked in Fig. 3), guarantee that antenna element has similar radiation characteristic on being parallel to the section with reference to ground by the symmetry in structure, to realize high circularity performance.Corresponding current distribution schematic diagram is as shown in figure 3, the earth-current central symmetry of antenna element is distributed.But, if antenna element is not disposed on the center of metallic carrier, the antenna element not can guarantee then for the symmetry of metallic carrier, the non-centrosymmetry distribution of earth-current is thus inevitably will cause, lead to the deterioration of the directional diagram circularity of the antenna element.

In practical application, in order to realize the covering of multiband and the signal transmission of multichannel, wireless transmitter usually requires to be equipped at least two omnidirectional antenna units, at this time, under the conditions of multi-antenna-unit, the antenna element for being not disposed on the center of metallic carrier is certainly existed, due to not can guarantee each antenna element for the symmetry on reference ground, it is therefore, traditional that there are the directional diagram of the wireless transmitter of mutiple antennas unit circles It spends poor.

Fig. 4 is shown in Fig. 2 in the scene of the quadrangle of screening cover setting omnidirectional antenna units, the current distribution schematic diagram of one antenna element, reference ground of the metallic carrier as antenna element (as marked in Fig. 4), it is not centrosymmetric relative to each antenna element, therefore non-centrosymmetry distribution is also presented in the earth-current of each antenna element, accordingly, the analogous diagram of the directional diagram of the antenna element can be as shown in Figure 5, directional diagram circularity corresponding to different broadbands is as shown in table 1 in Fig. 5, take three-dimensional figure in the section of a certain angle Theta in horizontal plane direction, the value range of the Theta is usually 0 ° to 180 °, frequency values recorded in table 1 are frequency values corresponding to the frequency point of the antenna element in normal work.When the section Theta circularity indicates that angle is Theta, the difference of level (unit: dB) maxima and minima of directional diagram.In addition, be generally concerned with Theta=80 ° of section based on the considerations of coverage area, this Theta=80 ° indicates in polar coordinate system with the angle of vertical direction to be 80 °.Analogous diagram and table 1 as shown in Figure 5 is known, traditional wideband monopole sub-antenna unit is in the case where the quadrangle of metallic carrier is laid out, due to being distributed relative to carrier non-centrosymmetry for antenna element, the non-centrosymmetry of the earth-current on metallic carrier is caused to be distributed, thus deeper directional diagram recess is formd in the diagonal direction of metallic carrier, the sharply deterioration for resulting in directional diagram circularity, it is 10.9dB (decibel) that circularity is worst in the broadband range of 1.7-2.7GHz (gigahertz (GHZ)).The degree of fluctuation of the direction figure far receptible fluctuation range of super common carrier institute, huge horizontal cross-section directional diagram fluctuation can form communication blind district in some angular ranges, reduce coverage area, reduce communication capacity.

Table 1

Fig. 6 is a kind of structural schematic diagram for wireless transmitter 30 that an illustrative examples of the invention provide, as shown in fig. 6, the wireless transmitter 30 may include:

Metallic carrier 301 and at least one antenna element 302 that 301 edge of metallic carrier is set.The edge refers to the non-central place of metallic carrier, that is to say when metallic carrier is center symmetrical structure, day Line unit is located at its non-central place, when metallic carrier is non-centrosymmetric structure, center is not present, then antenna element is located on metallic carrier.Optionally, which can be located on the angle of metallic carrier 301, or on the side of metallic carrier.As shown in the dotted line frame U in Fig. 6, the enlarged drawing of the antenna element 302 of 301 edge of metallic carrier is set for one, each antenna element 302 includes feed structure 3021 and radiation patch 3022 in dotted line frame U；Feed structure 3021 and radiation patch 3022 are non-centrosymmetric structure.Optionally, feed structure 3021 and radiation patch 3022 can be axially symmetric structure.It should be pointed out that the metallic carrier in the embodiment of the present invention can have a variety of structures, which can be able to be the metal shell of wireless transmitter, circuit board (such as medium substrate), radiator etc. as the reference ground of antenna element.

Radiation patch 3022 is fed by feed structure 3021, and radiation patch 3022 is grounded.

In practical application, radiation patch 3022 can generate electromagnetic oscillation (also referred to as resonance) with the setting face Q of antenna element 302.The setting face Q of radiation patch and antenna element 302 forms capacitor and inductance, inspires electromagnetic oscillation by capacitor and inductance.

And, in the embodiment of the present invention, the cooperation of both metallic carrier and antenna element realizes the actual high circularity of antenna element, it that is to say, the edge of metallic carrier is arranged in as a factor for improving antenna element circularity in antenna element, it can be considered as using metallic carrier as another radiation arm of antenna element and be integrally designed with antenna element ontology, the asymmetry bring circularity deterioration due to reference ground is counteracted using its radiation patch and the asymmetry of feed structure, it is thus achieved that the high circularity performance of antenna element.

Further, symmetrical shell centered on metallic carrier 301, mounting medium substrate 303 and screening cover 304 can also be sequentially overlapped on metallic carrier 301, the mounting medium substrate carries intracorporal electronic component for bearing metal, antenna element 302 is arranged on screening cover 304, and is located at the edge of metallic carrier 301.The screening cover 304 buckles above mounting medium substrate 303, for interfering with each other between shielded radio frequency circuit and external environment and antenna element.The material of the mounting medium substrate 303 and medium substrate 3023 may be the same or different.In practical application, as shown in fig. 6, mounting medium substrate can also be set It sets in the inside of golden carrier 30 as one kind 1, which buckles on metallic carrier 301.Optionally, which can be the epoxy resin board of model FR-4, dielectric constant 4.2；It is also possible to other materials.

In practical application, the feeding classification of feed structure and radiation patch can there are many, such as direct-connected feed or couple feed.When feed structure and radiation patch directly contact, the direct-connected feed of the two can be realized relatively narrow standing wave bandwidth using the antenna element of such feeding classification, and implementation is simple.And couple feed is capable of the bandwidth of extended antenna unit.

Traditional omnidirectional antenna units, such as, omnidirectional antenna units 10 shown in FIG. 1, due to its structure, multi-antenna-unit layout is carried out on wireless transmitter, or metal preferable directional diagram circularity can only be kept in narrow bandwidth range in asymmetric situation, and the directional diagram circularity in broadband range is poor.Wherein, directional diagram is the abbreviation of antenna element directional diagram, refer at a certain distance from from antenna element, with the figure of direction change, generally use through two orthogonal plane patterns in antenna element greatest irradiation direction indicates the relative field strength (normalization modulus value) of radiation field.Antenna element directional diagram is the important figure for measuring antenna element performance, and the parameters of antenna element can be observed from antenna element directional diagram.Directional diagram circularity (antenna pattern roundness) is also referred to as directional diagram out-of-roundness, refers in horizontal radiation pattern, the difference of the maxima and minima of antenna element all directions level (unit: dB).

In order to make antenna element 302 obtain wider standing wave bandwidth.In embodiments of the present invention, as shown in Figure 6, may exist gap m between feed structure 3021 and radiation patch 3022, it is exemplary, feed structure 3021 may exist gap m between the orthographic projection and radiation patch 3022 in 3022 place face of radiation patch, or, feed structure 3021 may exist overlapping region between the orthographic projection and radiation patch 3022 in 3022 place face of radiation patch, but the two is non-coplanar not to be bonded, to generate gap m, feed structure 3021 and radiation patch 3022 pass through gap m couple feed.Antenna element 302 can be made to obtain wider standing wave bandwidth by way of couple feed.

Further, the shape of feed structure 3021 and radiation patch 3022 can match setting, guarantee effective feed between the two.The embodiment of the present invention is illustrated by taking following 4 kinds of possible implementations as an example:

The first possible implementation: as is seen in fig. 6 or fig. 7, feed structure 3021 is E-shaped structure, E-shaped structure is arranged at intervals on the first horizontal stripe shape structure composition on the first vertical strip structure by the first vertical strip structure and 3 one end, the opening of E-shaped structure deviates from radiation patch, the length of the first horizontal strip structure among E-shaped structure is greater than the length of other 2 the first horizontal strip structures, and the other end of the first horizontal strip structure among E-shaped structure and the feed of metallic carrier connect, the first vertical strip structure and radiation patch 3022 form gap.The feed namely feed source can pass for the signal of metallic carrier Defeated port is usually connect with the input/output port of transceiver.

Second of possible implementation: as shown in Figure 8,3021 feed structure of feed structure is T-shaped structure, T-shaped structure is by the second vertical strip structure and 1 one end from outwardly extending second horizontal stripe shape structure composition in the middle part of the second vertical strip structure, the other end of second horizontal strip structure and the feed of metallic carrier connect, and the second vertical strip structure and radiation patch 3022 form gap.

The third possible implementation: as shown in Figure 9, the integral structure that feed structure 3021 can also form for arcuate structure 30211 and strip structure 30212, one end of strip structure 30212 and the feed of metallic carrier connect, the other end is connect with arcuate structure 30211, radiation patch 3022 is provided with curved opening close to the side of feed structure 3021, arcuate structure 30211 is matched with the curved opening, arcuate structure 30211 is located in curved opening, and the gap for being used for couple feed is formed with curved opening.

4th kind of possible implementation: as shown in Figure 10, feed structure 3021 can also be arc strip structure, and the outside of feed structure 3021 and the feed of metallic carrier connect, and the inside of feed structure 3021 and radiation patch 3022 form gap.

It is worth noting that; the shape of feed structure 3021 and radiation patch 3022 the case where there may also be other matchings; the embodiment of the present invention only schematically illustrates; it is all on the basis of match condition provided by the invention; any modification, equivalent replacement, improvement and so on; it should all be included in the protection scope of the present invention, therefore, the embodiment of the present invention does not repeat them here this.

As shown in Fig. 6 to 10, feed structure 3021 can be connect by feed foot 3027 with the feed of metallic carrier 301, feed the setting face of 3027 vertical antenna unit 302 of foot.

Further, as shown in Figure 7 to 10, antenna element 302 can also include medium substrate 3023.Optionally, which can be the epoxy resin board of model FR-4, and dielectric constant 4.2 is also possible to other materials.The medium substrate 3023 that is to say, radiation patch 3022 is arranged on medium substrate 3023, and the plate face W of the medium substrate can be parallel with the setting face of antenna element for carrying radiation patch 3022 and feed structure 3021.Capacitor can be formed between two parallel faces.Feed structure 3021 can be completely or partially arranged on medium substrate 3023.As shown in Figure 9, radiation patch 3022 is fitted on the plate face W (any surface i.e. in the face of two largest surface areas of medium substrate 3023) of medium substrate 3023, the surface of radiation patch is parallel with the setting face Q of antenna element 302, can produce capacitor between two parallel faces.

Further, as shown in Figure 8 and Figure 9, antenna element 302 can also include:

Parasitic structure 3024, the parasitic structure 3024 are located on the face parallel with the setting face of antenna element, for example, the parasitic structure 3024 can be supported by some support constructions, the setting with antenna element is arranged in On the parallel face in face；Or it is set up directly in the plate face of medium substrate 3023, the medium substrate is parallel with the bottom surface of groove, parasitic structure 3024 is grounded, may exist gap n between parasitic structure 3024 and radiation patch 3022, it is exemplary, there are gap n with radiation patch 3022 for orthographic projection of the parasitic structure 3024 in 3022 place face of radiation patch, or, parasitic structure 3024 may exist overlapping region between the orthographic projection and radiation patch 3022 in 3022 place face of radiation patch, but the two is non-coplanar not to be bonded, to generate gap n, parasitic structure 3024 and radiation patch 3022 pass through gap n couple feed.Parasitic structure 3024 can form electromagnetic oscillation with the setting face of antenna element, antenna element is on the basis of radiation patch, increase parasitic structure, both electromagnetic oscillation can be formed with the setting face of antenna element, and the area of the overall resonance of antenna element and its bandwidth are positively correlated, therefore, the bandwidth of antenna element can further be expanded on the basis of guaranteeing antenna element smaller size smaller by the couple feed of radiation patch and parasitic structure.Also, parasitic structure 3024 or non-centrosymmetrical, the further directional diagram circularity for ensureing antenna element.

Optionally, as shown in Fig. 8 or Fig. 9, antenna element 302 can also include:

First grounding leg 3025,3025 one end of the first grounding leg are connect with parasitic structure 3024, and the other end is connect with metallic carrier 301, the setting face of 3025 vertical antenna unit of the first grounding leg, and parasitic structure 3024 is grounded by metallic carrier 301.Parasitic structure can be by being arranged in parallel with the setting face of antenna element, capacitor is formed with the setting face, make to form inductance between parasitic structure and the setting face by the way that first grounding leg is arranged again, and then inspire electromagnetic oscillation, also, by the way that first grounding leg is arranged, parasitic structure can not only be electrically connected by shorter path with metallic carrier, parasitic structure can also be supported, manufacturing process is also fairly simple.

In embodiments of the present invention, the feeding classification of radiation patch and parasitic structure can there are many, such as direct-connected feed or couple feed can expand the bandwidth of antenna element using two kinds of feeding classifications.As shown in figure 11, it is directly contacted in radiation patch 3022 with parasitic structure 3024 in Figure 11, the direct-connected feed of the two, using the radiation patch 3022 of such feeding classification, the ground line of side can not be needed, is directly grounded by the first grounding leg 3025 being connected with parasitic structure, and, first grounding leg can also form stronger inductance between radiation patch and the setting face of antenna element, guarantee that the setting face of radiation patch and antenna element generates electromagnetic oscillation.

As in figs. 8 or 9, there are gap n, parasitic structure 3024 and radiation patch 3022 to pass through gap n couple feed between parasitic structure 3024 and radiation patch 3022.Antenna element 302 can be made to obtain wider standing wave bandwidth by way of couple feed.It should be noted that the two is discontiguous, therefore radiation patch 3022 can not be grounded by parasitic structure 3024 when carrying out couple feed due to parasitic structure 3024 and radiation patch 3022, need through ground line or grounding leg ground connection.

It is worth noting that, due to parasitic structure self performance, area when its area when using direct-connected feed is greater than couple feed, in order to reduce the overall volume of antenna element, the mode that parasitic structure and radiation patch generally use couple feed is fed.

Further, the shape of parasitic structure 3024 and radiation patch 3022 can match setting, guarantee effective feed between the two.For example, parasitic structure 3024 and radiation patch 3022 can match setting, and guarantee has gap appropriate between the two when antenna element 302 is fed by the way of 3022 couple feed of parasitic structure 3024 and radiation patch.Exemplary, as shown in figure 9, parasitic structure 3024 is sector structure, radiation patch 3022 is semicircular configuration, and the center of circle of radiation patch 3022 and the center of circle of parasitic structure 3024 are located at the same side of radiation patch 3022.Optionally, two centers of circle are close to the corner at antenna element setting, can reduce the size of antenna element entirety in this way.As shown in figure 8, parasitic structure 3024 is triangular structure, radiation patch 3022 is polygonized structure, and radiation patch 3022 is parallel with the both sides adjacent to each other of parasitic structure 3024.In another example the shape of parasitic structure 3024 and radiation patch 3022 can match setting when antenna element 302 is fed by the way of parasitic structure 3024 and the direct-connected feed of radiation patch 3022, guarantee the two effectively connection.Exemplary, as shown in figure 11, parasitic structure 3024 is sector structure, and radiation patch 3022 is semicircular configuration, and the center of circle of radiation patch 3022 and the center of circle of parasitic structure 3024 are located at the same side of radiation patch 3022.The wherein inward flange overlap joint of the outer edge and semicircular configuration of sector structure.In Figure 11, parasitic structure 3024 and radiation patch 3022 can be located at the same face of medium substrate, and parasitic structure 3024 partly overlaps with the presence of radiation patch 3022, pass through the contact of the lap, the two electrical connection, for example, parasitic structure 3024 and radiation patch 3022 are located at the lower surface of medium substrate, and the upper surface of parasitic structure 3024 and the presence of the lower surface of radiation patch 3022 partly overlap.

It is worth noting that; the shape of parasitic structure 3024 and radiation patch 3022 the case where there may also be other matchings; the embodiment of the present invention only schematically illustrates; it is all on the basis of match condition provided by the invention; any modification, equivalent replacement, improvement and so on; it should all be included in the protection scope of the present invention, therefore, the embodiment of the present invention does not repeat them here this.

It should be noted that radiation patch 3022 can be grounded using grounding leg.Optionally, as shown in Figure 7, antenna element 302 can also include: the second grounding leg 3026 that at least side of radiation patch 3022 is arranged in, second grounding leg 3026 can be made of metal, second grounding leg, 3026 one end is connect with radiation patch 3022, the other end is connect with metallic carrier 301, the setting face of 3025 vertical antenna unit of the second grounding leg, and radiation patch 3022 is grounded by metallic carrier 301.Exemplary, for Fig. 7 by taking 2 the second grounding legs 3026 are arranged in antenna element 302 as an example, this 2 the second grounding legs 3026 are symmetricly set on 3022 two sides of radiation patch.By being arranged second grounding leg 3026, radiation patch can be by setting with antenna element The face of setting is arranged in parallel, capacitor is formed with the setting face, make to form inductance between radiation patch and the setting face by the way that second grounding leg is arranged again, and then inspire electromagnetic oscillation, also, second grounding leg can not only be such that radiation patch is electrically connected by shorter path with metallic carrier, can be with Supporting Media substrate, prevent medium substrate from deforming, manufacturing process is also fairly simple.And 2 the second grounding legs 3026, which are symmetricly set on 3022 two sides of radiation patch, can effectively reduce antenna element size, expand bandwidth.

In practical application, the relative position of radiation patch, feed structure and parasitic structure on medium substrate can be configured as the case may be, three can there are two the one sides for being located at medium substrate, one is located at the another side of medium substrate, or three is located at the same face of medium substrate, as shown in Fig. 8 or Fig. 9, radiation patch 3022 and feed structure 3021 are located at the one side of medium substrate, and parasitic structure 3024 is located at the another side of medium substrate；As shown in figure 11, radiation patch 3022 and parasitic structure 3024 are located at the one side of medium substrate 3023, and feed structure 3021 is located at the another side of medium substrate 3023.If radiation patch and parasitic structure are located at the lower surface of medium substrate, feed structure is located at the upper surface of medium substrate.

Certainly, when not set parasitic structure on wireless transmitter, the relative position of radiation patch 3022 and feed structure 3021 on medium substrate can be configured as the case may be, the two can be located at the two sides of medium substrate 3023, or both be located at medium substrate 3023 the same face, as is seen in fig. 6 or fig. 7, radiation patch 3022 and feed structure 3021 are located at the same face of medium substrate 3023；As shown in figure 12, radiation patch and feed structure are located at the two sides of medium substrate.In Figure 12, radiation patch 3022 is located at the lower surface of medium substrate 3023, which is semicircular configuration.

In practical application, wireless transmitter 30 can also be as shown in figure 13, it does not include screening cover, mounting medium substrate directly buckles on metallic carrier or the inside of metallic carrier is arranged in medium substrate, and in each component inside metallic carrier, if there is the component for needing to be arranged shielding construction, a small shielding case can be buckled outside the component, to avoid interfering with each other for the component and external environment.As shown in figure 13, groove 3011 is arranged in the edge of metallic carrier, antenna element 302 is arranged in the groove 3011, mounting medium substrate 303 on the medium substrate 3023 and metallic carrier of antenna element 302 is structure as a whole, since the wireless transmitter 30 is not provided with screening cover, the integral thickness that wireless transmitter can be reduced consequently reduces the volume of wireless transmitter.

It should be noted that, in embodiments of the present invention, antenna element 302 can be arranged directly on metallic carrier 301, also it can be set on the mounting medium substrate 303 or screening cover 304 on metallic carrier 301, but it is respectively positioned on the fringe region of metallic carrier 301, the setting face of antenna element 302 includes a metal covering, so as to form capacitor with radiation patch, therefore, in the embodiment of the present invention, the setting face of antenna element 302 can be the upper plane of metallic carrier 301, and the upper plane of mounting medium substrate 303 (has gold in plane on this Belong to region) or screening cover 304 upper plane.Radiation patch or parasitic structure are grounded by metallic carrier, it refers to, the radiation patch can directly be connect with metallic carrier by the second grounding leg, it can also be by the ground line or grounding leg that are arranged on mounting medium substrate 303 or screening cover 304, it is connect indirectly with metallic carrier, the metal earth connection of the screening cover and mounting medium substrate and metallic carrier.

Optionally, metallic carrier bottom is also provided with radiation tooth, which is used for the heat dissipation of metallic carrier.

It should be noted that using the omnidirectional antenna units in wireless transmitter provided in an embodiment of the present invention, voltage standing wave ratio (English: Voltage Standing Wave Ratio；Referred to as: VSWR) can be less than 2.5, standing wave bandwidth can be greater than 45%.

Further, as shown in fig. 7, the top of feed structure 3021 can be connect by feed foot 3027 with the feed of metallic carrier 301, setting face Q of the feed foot 3027 perpendicular to antenna element 302.The feed structure 3021 is parallel to the setting face Q of antenna element 302.As shown in fig. 7, feed structure 3021 and radiation patch 3022 are printed on the upper surface of medium substrate 3023, the signal (also can be considered energy) of feed is coupled to radiation patch 3022 by 3021 feed-in of feed structure by way of slot-coupled.Also, the two sides of radiation patch 3022 are provided with the second grounding leg 3026, radiation patch 3022 is connected by the second grounding leg 3026 with metallic carrier 301, and the overall structure and metallic carrier of antenna element are relatively independent.The size of each part is adjusted, antenna element can be made to obtain the standing wave bandwidth (VSWR < 2.5) of > 45%, meanwhile, in the bandwidth range, the directional diagram of antenna element can realize preferable circularity performance.

Wireless transmitter 30 as shown in Figure 7, left view and top view are respectively Figure 14 and Figure 15, and Figure 14 and Figure 15 denote each structural parameters of antenna element in the wireless transmitter 30.As shown in figure 14, the upper surface of medium substrate 3023 is h at a distance from the setting face of antenna element, projector distance between 3022 center of second grounding leg 3026 and radiation patch is ps, the width of each second grounding leg 3026 is ws, the distance of second grounding leg 3026 to feed foot 3027 is pf, and as shown in figure 14, the top view of medium substrate 3023 is one jiao of square for clipping an isosceles right triangle, the side length of the square is c0, a length of c0-c1 of the waist of the right angled isosceles triangle；The internal diameter of the radiation patch 3022 of semi-circular (can also be considered as a quarter annular) is r1, outer diameter is r2, central angle is 90 °, and the distance on the both sides of the distance of center circle medium substrate 3023 of the radiation patch 3022 of semi-circular (can also be considered as a quarter annular) is r0；Radiation patch 3022 is E-shaped structure, and the vertical strip structure of the first of radiation patch 3022 is semicircular configuration, and the internal diameter of the semicircular configuration is r3, outer diameter r4, central angle a, is located at outside E-shaped structure The horizontal strip structure of the first of edge, a length of la, width wa, the first horizontal a length of lf of strip structure, width wf positioned at the centre of E-shaped structure.

The size of each structural parameters of antenna element is as shown in table 2 in wireless transmitter 30 shown in Fig. 7.Wherein, λ 1 is the corresponding wavelength of lowest operating frequency of antenna element in the wireless transmitter 30, and r1 is that (0.073 λ, 1,0.109 λ 1) indicates r1 in the range of 1 to 0.109 1 λ 0.073 λ.

Table 2

When the size of each structural parameters of antenna element is as shown in table 2 in wireless transmitter 30 in Fig. 7, the analogous diagram of the directional diagram of the antenna element can be as shown in figure 16, and directional diagram circularity corresponding to different frequent points is as shown in table 3 in Figure 16.By the above analogous diagram and table 3 it is found that it is 5.5dB that antenna element circularity in the broadband range of 1.7-2.7GHz is worst in wireless transmitter shown in Fig. 7 30.The fluctuation of direction figure is smaller, and biggish coverage area may be implemented, and promotes communication capacity.

Table 3

It should be noted that the structure of above-mentioned wireless transmitter 30 is to schematically illustrate in the embodiment of the present invention, in practical application, each component in wireless transmitter 30 in the figures such as Fig. 6 to Figure 13 can be tied It closes or replaces, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention, and the present invention repeats no more this.

The explanation of value is, the size in wireless transmitter provided in the embodiment of the present invention only schematically illustrates, primarily to guaranteeing that antenna element obtains the standing wave bandwidth (VSWR < 2.5) of > 45%, in practical application, the size of wireless transmitter can be adjusted according to specific application scenarios, and it is not limited in the embodiment of the present invention.

Wireless transmitter provided in an embodiment of the present invention, structure is simple, convenient for assembly.Radiation patch and feed structure etc. can be may be integrally formed on medium substrate, then it is installed on metallic carrier or screening cover, screening cover can be fastened on metallic carrier after the installation of mounting medium substrate, since radiation patch and feed structure etc. may be integrally formed on medium substrate, the stereochemical structure not being a separately formed, therefore structure is simple, convenient for assembly.

The explanation of value is, the grounding leg provided in the embodiment of the present invention, such as the first grounding leg, second grounding leg, not only act as supporting role, also act as electric action (ground connection effect can also be considered as), in practical application, it can also be replaced using ground line, ground line is typically only capable to play the role of electric action (can also be considered as ground connection), and, the number of grounding leg and its setting position can be according to the actual setting situations of antenna element, such as stability, occupied space etc. carries out appropriate adjustment, the number of grounding leg is usually 1 or 2, such as, as shown in Figure 8, the side of radiation patch 3022 is provided with the second grounding leg 3026, the other side of radiation patch is provided with feed structure 3021；In another example, as illustrated in fig. 9 or 10, second grounding leg 3026 totally 2,2 the second grounding legs 3026 are symmetricly set on the two sides of radiation patch 3022, it is connect respectively with the metal earth of medium substrate 3023, feed structure 3021 is axially symmetric structure, and the symmetry axis of the symmetry axis of feed structure 3021 and 2 the second grounding legs 3026 can relatively easily control the circularity of directional diagram in this way；For another example Figure 17 is the structural schematic diagram for being provided with the wireless transmitter of second grounding leg 3026.As shown in Figure 8 and Figure 9, the extended segment r connecting with the second grounding leg 3026 can be set in radiation patch, as shown in Figure 18 and Figure 19, radiation patch can also directly with the second grounding leg 3026.

As shown in Figure 18 or Figure 19, which is parallel to the setting face Q of antenna element 302.Feed structure 3021 and radiation patch 3022 are printed on the upper surface of medium substrate 3023, and the signal of feed is coupled to radiation patch 3022 by 3021 feed-in of feed structure by way of slot-coupled.Also, the two sides of radiation patch 3022 are provided with the second grounding leg 3026, radiation patch 3022 is connected by the second grounding leg 3026 with metallic carrier 301, and the overall structure and metallic carrier of antenna element are relatively independent.The size of each part is adjusted, antenna element can be made to obtain the standing wave bandwidth (VSWR < 2.5) of > 45%, meanwhile, in the bandwidth range, the directional diagram of antenna element can realize preferable circularity performance.

It should be noted that antenna element may include medium substrate in the embodiment of the present invention in the wireless transmitter of the offers such as Fig. 6 to Figure 13, it can not also include medium substrate, the medium substrate is for carrying radiation patch and feed structure.When antenna element includes medium substrate, radiation patch can make the bottom surface of itself and groove generate electromagnetic oscillation by medium substrate, when antenna element does not include medium substrate, radiation patch can make the bottom surface of itself and groove generate electromagnetic oscillation otherwise, such as, as shown in Fig. 6 or Figure 20, the antenna element that Figure 20 can be considered as in Fig. 7 does not have the structural schematic diagram of medium substrate, as seen from Figure 20, radiation patch 3022 can be supported by the second grounding leg 3026, feed structure 3021 is supported by feed foot 3027, to guarantee that the setting face of radiation patch 3022 and antenna element generates electromagnetic oscillation；Optionally, radiation patch and/or feed structure can also be supported by plastic construction, so that the setting face of radiation patch 3022 and antenna element generates electromagnetic oscillation.The structure of wireless transmitter in other embodiments can also refer to Figure 20 adaptation, and the embodiment of the present invention is not construed as limiting this.Similarly, when antenna element includes medium substrate, parasitic structure can make the bottom surface of itself and groove generate electromagnetic oscillation by medium substrate, when antenna element does not include medium substrate, parasitic structure can make the bottom surface of itself and groove generate electromagnetic oscillation otherwise, such as setting supports the grounding leg of the parasitic structure or supports parasitic structure using plastic construction.The embodiment of the present invention does not repeat this.

As shown in figure 20, which is parallel to the setting face Q of antenna element 302.Feed structure 3021 and radiation patch 3022 are printed on the upper surface of medium substrate 3023, and feed is signal by 3021 feed-in of feed structure, and is coupled to radiation patch 3022 by way of slot-coupled.Also, the two sides of radiation patch 3022 are provided with the second grounding leg 3026, radiation patch 3022 is connected by the second grounding leg 3026 with metallic carrier 301, and the overall structure and metallic carrier of antenna element are relatively independent.The size of each part is adjusted, antenna element can be made to obtain the standing wave bandwidth (VSWR < 2.5) of > 45%, meanwhile, in the bandwidth range, the directional diagram of antenna element can realize preferable circularity performance.

Wireless transmitter provided in an embodiment of the present invention, it is non-centrosymmetric structure that the feed structure of each antenna element and radiation patch at least one antenna element of metallic carrier edge, which is arranged in, reference ground of the metallic carrier as antenna element, it is also non-centrosymmetrical relative to each antenna element, so for each antenna element, the distribution of non-centrosymmetrical radiation patch and the non-centrosymmetrical earth-current with reference to caused by ground can form opposite central symmetry, compared to the omnidirectional antenna units in traditional wireless transmitter, the directional diagram circularity of the antenna element of wireless transmitter provided in an embodiment of the present invention is preferable in broadband range, therefore, effectively improve directional diagram circularity.Also, due to the improvement of directional diagram circularity, it can further improve the uniformity coefficient of signal covering, avoid occurring coverage hole around antenna element.Meanwhile wireless transmitter provided by the embodiment of the present invention, since antenna element is set to the side of wireless transmitter Edge accomplishes good tradeoff between the signal covering of antenna element and correlation so that the spacing between antenna element is sufficiently large.Since the radiation patch and feed structure of the antenna element can be printed on medium substrate, the size of antenna element is much smaller than traditional antenna element of same band, is conducive to the miniaturization of antenna integrated unit module.

In embodiments of the present invention, wireless transmitter can be equipped at least one omnidirectional antenna units, each antenna element can be such as Fig. 6 to Figure 13, antenna element 302 shown in Figure 17 to Figure 20 is any, each antenna element is mounted on the non-center position of metallic carrier, such as the edge of metallic carrier, but in order to realize the covering of multiband and the signal transmission of multichannel, wireless transmitter usually requires to be equipped at least two omnidirectional antenna units, can have an antenna element at least two omnidirectional antenna units is antenna element as shown in Figure 1, it is mounted on the center of metallic carrier, other antenna elements can be for such as Fig. 6 to Figure 13, antenna element 302 shown in Figure 17 to Figure 20 is any, it is mounted on the non-center position of metallic carrier, the usually edge of metallic carrier；Alternatively, each antenna element can be antenna element 302 shown in such as Fig. 6 to Figure 13, Figure 17 to Figure 20 is any at least two omnidirectional antenna units, it is all mounted on the non-center position of metallic carrier.Therefore, the edge of metallic carrier is arranged at least one antenna element.

The embodiment of the present invention provides a kind of antenna element, the antenna element can be such as Fig. 6 to Figure 13, antenna element 302 shown in Figure 17 to Figure 20 is any, the antenna element may be mounted on metallic carrier, also it may be mounted in other structures with metal surface, on vehicle, the embodiment of the present invention is illustrated so that antenna element is mounted on metallic carrier as an example, which includes:

Feed structure and radiation patch；

Feed structure and radiation patch are non-centrosymmetric structure；

Radiation patch is fed by feed structure, radiation patch ground connection.

Optionally, there are gap, feed structure and radiation patch to pass through aperture-coupled between feed structure and radiation patch.

Optionally, feed structure can be there are many form:

In the first possible implementation, feed structure is E-shaped structure, and E-shaped structure is indulged by first Strip structure and 3 one end are arranged at intervals on the first horizontal stripe shape structure composition on the first vertical strip structure, the opening of E-shaped structure deviates from radiation patch, the length of the first horizontal strip structure among E-shaped structure is greater than the length of other 2 the first horizontal strip structures, and the other end of the first horizontal strip structure among E-shaped structure and the feed of metallic carrier connect, the first vertical strip structure and radiation patch form gap.

In second of possible implementation, feed structure is T-shaped structure, T-shaped structure is by the second vertical strip structure and 1 one end from outwardly extending second horizontal stripe shape structure composition in the middle part of the second vertical strip structure, the other end of second horizontal strip structure and the feed of metallic carrier connect, and the second vertical strip structure and radiation patch form gap.

In the third possible implementation, feed structure is the integral structure of arcuate structure and strip structure composition, one end of strip structure and the feed of metallic carrier connect, the other end is connect with arcuate structure, radiation patch is provided with curved opening close to the side of feed structure, arcuate structure is located in curved opening, and forms gap with curved opening.

Optionally, the setting face of feed structure parallel antenna unit, feed structure are connected by the feed of feed foot and metallic carrier, feed the setting face of foot vertical antenna unit.

Further, antenna element further includes medium substrate, and radiation patch and feed structure are arranged on medium substrate.

Optionally, antenna element further include:

Parasitic structure, parasitic structure are located on the face parallel with the setting face of antenna element, parasitic structure ground connection.By increasing parasitic structure, the bandwidth of antenna element can be further expanded.

Optionally, there are gap, parasitic structure and radiation patch to pass through gap couple feed between parasitic structure and radiation patch.By gap couple feed the bandwidth for expanding antenna element can be effectively ensured under the premise of occupying lesser volume in parasitic structure and radiation patch.

On the basis of antenna element includes parasitic structure, optionally, antenna element further include:

First grounding leg, first grounding leg one end are connect with parasitic structure, and the other end is connect with metallic carrier, the setting face of the first grounding leg vertical antenna unit, and parasitic structure is grounded by metallic carrier.

Optionally, antenna element further include:

Second grounding leg, second grounding leg one end are connect with radiation patch, and the other end is connect with metallic carrier, the setting face of the second grounding leg vertical antenna unit, and radiation patch is grounded by metallic carrier.

In one possible implementation, the side of radiation patch is provided with the second grounding leg, and the other side of radiation patch is provided with feed structure.

In alternatively possible implementation, the second grounding leg totally 2,2 the second grounding legs are symmetricly set on the two sides of radiation patch.

In practical application, feed structure is axially symmetric structure, the symmetry axis of the symmetry axis of feed structure and 2 the second grounding legs.

Optionally, parasitic structure is non-centrosymmetric structure.When radiation patch, feed structure and parasitic structure are that non-centrosymmetric structure can make the antenna element be not disposed on the center of metallic carrier, still guarantee the characteristic of the high circularity of antenna element, improve the general applicability of antenna element.

Exemplary, parasitic structure is sector structure, and radiation patch is semicircular configuration, and the center of circle of radiation patch and the center of circle of parasitic structure are located at the same side of radiation patch.

It is apparent to those skilled in the art that for convenience and simplicity of description, the specific structure of the antenna element of foregoing description can be with reference to the counter structure of the antenna element 302 in aforementioned wireless transmitter, and details are not described herein.

The embodiment of the present invention provides a kind of base station, it may include at least one radio receiving transmitting module provided in an embodiment of the present invention, when the base station includes at least two radio receiving transmitting module, each radio receiving transmitting module can be any wireless transmitter in above-described embodiment provided by the invention.The base station is typically situated in indoor base station.Using the base station of wireless transmitter 30 in the embodiment of the present invention, have working band wide, the good feature of omnidirectional's performance, the base station may be mounted in stadiums or shopping place, cover for realizing the omnidirectional of room area wireless signal.

Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment may be implemented by hardware, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer readable storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..

The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, and all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims

A kind of wireless transmitter characterized by comprising

Metallic carrier and at least one antenna element that the metallic carrier edge is arranged in, each antenna element includes feed structure and radiation patch；

The feed structure and the radiation patch are non-centrosymmetric structure；

The radiation patch is fed by the feed structure, the radiation patch ground connection.
Wireless transmitter according to claim 1, which is characterized in that

There are gap, the feed structure and the radiation patch to pass through the aperture-coupled between the feed structure and the radiation patch.
Wireless transmitter according to claim 1 or 2, it is characterized in that, the feed structure is E-shaped structure, the E-shaped structure is arranged at intervals on the first horizontal stripe shape structure composition on the described first vertical strip structure by the first vertical strip structure and 3 one end, the opening of the E-shaped structure deviates from the radiation patch, the length of the first horizontal strip structure among the E-shaped structure is greater than the length of other 2 the first horizontal strip structures, and the other end for being located at the first horizontal strip structure among the E-shaped structure is connect with the feed of the metallic carrier, the first vertical strip structure and the radiation patch form the gap.
Wireless transmitter according to claim 1 or 2, it is characterized in that, the feed structure is T-shaped structure, the T-shaped structure is by the second vertical strip structure and 1 one end from outwardly extending second horizontal stripe shape structure composition in the middle part of the described second vertical strip structure, the other end of the second horizontal strip structure is connect with the feed of the metallic carrier, and the second vertical strip structure and the radiation patch form the gap.
Wireless transmitter according to claim 1 or 2, it is characterized in that, the feed structure is the integral structure of arcuate structure and strip structure composition, one end of the strip structure is connect with the feed of the metallic carrier, the other end is connect with the arcuate structure, the radiation patch is provided with curved opening close to the side of the feed structure, and the arcuate structure is located in the curved opening, and forms the gap with the curved opening.
Wireless transmitter according to claim 1 or 2, it is characterized in that, the feed structure is arc strip structure, and the outside of the feed structure is connect with the feed of the metallic carrier, and the inside of the feed structure and the radiation patch form the gap.
Wireless transmitter according to any one of claims 1 to 6, it is characterized in that, the setting face of the feed structure antenna element in parallel, the feed structure are connect by feeding foot with the feed of the metallic carrier, the setting face for feeding the vertical antenna element of foot.
Wireless transmitter according to any one of claims 1 to 7, which is characterized in that the antenna element further includes medium substrate, and the radiation patch and the feed structure are arranged on the medium substrate.
Wireless transmitter according to any one of claims 1 to 8, which is characterized in that the antenna element further include:

Parasitic structure, the parasitic structure are located on the face parallel with the setting face of the antenna element, the parasitic structure ground connection.
Wireless transmitter according to claim 9, which is characterized in that

There are gap, the parasitic structure and the radiation patch to pass through the gap couple feed between the parasitic structure and the radiation patch.
Wireless transmitter according to claim 9 or 10, which is characterized in that the antenna element further include:

First grounding leg, first grounding leg one end are connect with the parasitic structure, and the other end is connect with the metallic carrier, and the setting face of the vertical antenna element of first grounding leg, the parasitic structure is grounded by the metallic carrier.
Wireless transmitter according to any one of claims 1 to 11, which is characterized in that the antenna element further include:

Second grounding leg, second grounding leg one end are connect with the radiation patch, and the other end is connect with the metallic carrier, and the setting face of the vertical antenna element of second grounding leg, the radiation patch is grounded by the metallic carrier.
Wireless transmitter according to claim 12, which is characterized in that

The side of the radiation patch is provided with second grounding leg, and the other side of the radiation patch is provided with the feed structure.
Wireless transmitter according to claim 12, which is characterized in that

Second grounding leg totally 2,2 second grounding legs are symmetricly set on the two sides of the radiation patch.
Wireless transmitter according to claim 14, which is characterized in that

The feed structure is axially symmetric structure, the symmetry axis of the symmetry axis of the feed structure and 2 second grounding legs.
According to any wireless transmitter of claim 9 to 11, which is characterized in that

The parasitic structure is non-centrosymmetric structure.
Wireless transmitter according to claim 16, which is characterized in that

The parasitic structure is sector structure, and the radiation patch is semicircular configuration, and the center of circle of the center of circle of the radiation patch and the parasitic structure is located at the same side of the radiation patch.
Wireless transmitter according to any one of claims 1 to 17, which is characterized in that

Mounting medium substrate and screening cover are sequentially overlapped on the metallic carrier, the antenna element is arranged on the screening cover, and is located at the edge of the metallic carrier, and the mounting medium substrate is used to carry the electronic component in the metallic carrier.
A kind of antenna element characterized by comprising

Feed structure and radiation patch；

The feed structure and the radiation patch are non-centrosymmetric structure；

The radiation patch is fed by the feed structure, the radiation patch ground connection.
Antenna element according to claim 19, which is characterized in that

There are gap, the feed structure and the radiation patch to pass through the aperture-coupled between the feed structure and the radiation patch.
Antenna element described in 9 or 20 according to claim 1, it is characterized in that, the feed structure is E-shaped structure, the E-shaped structure is arranged at intervals on the first horizontal stripe shape structure composition on the described first vertical strip structure by the first vertical strip structure and 3 one end, the opening of the E-shaped structure deviates from the radiation patch, the length of the first horizontal strip structure among the E-shaped structure is greater than the length of other 2 the first horizontal strip structures, and the other end of the first horizontal strip structure among the E-shaped structure and the feed of metallic carrier connect, the first vertical strip structure and the radiation patch form the gap.
Antenna element described in 9 or 20 according to claim 1, it is characterized in that, the feed structure is T-shaped structure, the T-shaped structure is by the second vertical strip structure and 1 one end from outwardly extending second horizontal stripe shape structure composition in the middle part of the described second vertical strip structure, the other end of the second horizontal strip structure and the feed of metallic carrier connect, and the second vertical strip structure and the radiation patch form the gap.
Antenna element described in 9 or 20 according to claim 1, it is characterized in that, the feed structure is the integral structure of arcuate structure and strip structure composition, one end of the strip structure and the feed of metallic carrier connect, the other end is connect with the arcuate structure, the radiation patch is provided with curved opening close to the side of the feed structure, and the arcuate structure is located in the curved opening, and forms the gap with the curved opening.
Antenna element described in 9 or 20 according to claim 1, which is characterized in that the feed structure is arc strip structure, and the outside of the feed structure is connect with the feed of the metallic carrier, and the inside of the feed structure and the radiation patch form the gap.
9 to 24 any antenna element according to claim 1, it is characterized in that, the setting face of the feed structure antenna element in parallel, the feed structure are connected by the feed of feed foot and metallic carrier, the setting face of the vertical antenna element of the feed foot.
9 to 25 any antenna element according to claim 1, which is characterized in that the antenna element further includes medium substrate, and the radiation patch and the feed structure are arranged on the medium substrate.
Antenna element described in 9 to 26 according to claim 1, which is characterized in that the antenna element further include:

Parasitic structure, the parasitic structure are located on the face parallel with the setting face of the antenna element, the parasitic structure ground connection.
Antenna element according to claim 27, which is characterized in that

There are gap, the parasitic structure and the radiation patch to pass through the gap couple feed between the parasitic structure and the radiation patch.
The antenna element according to claim 27 or 28, which is characterized in that the antenna element further include:

First grounding leg, first grounding leg one end are connect with the parasitic structure, and the other end is connect with metallic carrier, and the setting face of the vertical antenna element of first grounding leg, the parasitic structure is grounded by the metallic carrier.
9 to 29 any antenna element according to claim 1, which is characterized in that the antenna element further include:

Second grounding leg, second grounding leg one end are connect with the radiation patch, and the other end is connect with metallic carrier, and the setting face of the vertical antenna element of second grounding leg, the radiation patch is grounded by the metallic carrier.
Antenna element according to claim 30, which is characterized in that

The side of the radiation patch is provided with second grounding leg, and the other side of the radiation patch is provided with the feed structure.
Antenna element according to claim 30, which is characterized in that

Second grounding leg totally 2,2 second grounding legs are symmetricly set on the two sides of the radiation patch.
Antenna element according to claim 32, which is characterized in that

The feed structure is axially symmetric structure, the symmetry axis of the symmetry axis of the feed structure and 2 second grounding legs.
According to any antenna element of claim 27 to 29, which is characterized in that

The parasitic structure is non-centrosymmetric structure.
Antenna element according to claim 34, which is characterized in that

The parasitic structure is sector structure, and the radiation patch is semicircular configuration, and the center of circle of the center of circle of the radiation patch and the parasitic structure is located at the same side of the radiation patch.
A kind of base station, which is characterized in that including any wireless transmitter of claim 1 to 18.