High gain full band satellite positioning antenna structure and communication device

Abstract

The application discloses a high-gain full-band satellite positioning antenna structure and a communication device. The antenna structure comprises a first radiation part, a second radiation part and a feed part, the first radiation part and the feed part are respectively arranged on the two sides of the second radiation part and are respectively arranged in a spaced manner with the second radiation part; a dielectric part is arranged between the first radiation part and the second radiation part, and the dielectric part is in abutment with the first radiation part and the second radiation part respectively; in the vertical direction of the feed part, the projection of the dielectric part covers the projection of the first radiation part; the first radiation part is electrically connected with the feed part through a first feed piece, the second radiation part is electrically connected with the feed part through a second feed piece, and the first feed piece penetrates the dielectric part and the second radiation part. The antenna structure can realize full-band radiation, the efficiency of the high-frequency band is relatively high, the gain is relatively large, the axial ratio is relatively low, the return loss is relatively small, the low-frequency band is less affected by the high-frequency band, the overall performance is relatively superior, and the volume can be relatively small, which is beneficial to the miniaturization of the antenna, convenient for carrying and installation.

Description

Technical Field

[0001] This application relates to the field of antenna technology, specifically to a high-gain full-band satellite positioning antenna structure and communication equipment. Background Technology

[0002] GPS-RTK (Global Positioning System-Real-Time Kinematic) is a high-precision real-time positioning technology based on the Global Positioning System. Its core technology achieves high-precision measurement through differential positioning, providing centimeter-level positioning accuracy in field operations. GPS-RTK antenna equipment is mainly used in long-term real-time automatic monitoring systems for bridge three-dimensional displacement, rural road engineering surveying, and open-pit mine slope displacement monitoring.

[0003] Achieving high-precision and high-sensitivity real-time positioning in harsh working environments places extremely high demands on antenna design. It requires designing satellite positioning antennas with superior overall performance, while also ensuring that the antennas are compact, portable, and easy to install. Utility Model Content

[0004] This application provides a high-gain full-band satellite positioning antenna structure and communication equipment to improve the overall performance of the antenna.

[0005] In a first aspect, this application provides a high-gain full-band satellite positioning antenna structure, including a first radiating part, a second radiating part, and a feed part. The first radiating part and the feed part are respectively disposed on both sides of the second radiating part and spaced apart from it. A dielectric part is disposed between the first radiating part and the second radiating part, and the dielectric part abuts against both the first radiating part and the second radiating part. In the vertical direction of the feed part, the projection of the dielectric part covers the projection of the first radiating part. The first radiating part is electrically connected to the feed part through a first feeding element, and the second radiating part is electrically connected to the feed part through a second feeding element. The first feeding element passes through the dielectric part and the second radiating part.

[0006] In one specific implementation, a support portion is provided between the second radiating portion and the feed portion, the support portion abutting against the second radiating portion and the feed portion respectively; the dielectric constant of the support portion is less than the dielectric constant of the dielectric portion.

[0007] In one specific implementation, the support portion is provided with a first through hole, the second power supply component passes through the first through hole, the radial dimension of the first through hole is less than or equal to the radial dimension of the second power supply component, and the second power supply component abuts against the hole wall of the first through hole.

[0008] In one specific implementation, the support portion has a first groove on the side facing the feed portion, and the support portion has a second groove on the side facing the second radiating portion; the first feed element passes through the first groove, and the second feed element passes through the second groove and the first groove.

[0009] In one specific implementation, there are multiple second power supply components, which are arranged vertically around the feed source portion; the number of support portions is greater than or equal to the number of second power supply components, and each second power supply component passes through one of the support portions.

[0010] In one specific implementation, the second radiating part is provided with a second through hole, the first power supply element passes through the second through hole, the radial dimension of the second through hole is larger than the radial dimension of the first power supply element, and there is a gap between the first power supply element and the hole wall of the second through hole.

[0011] In one specific implementation, the dielectric part is provided with a third through hole, through which the first power supply element passes. The radial dimension of the third through hole is greater than that of the first power supply element, and there is a gap between the first power supply element and the wall of the third through hole.

[0012] In one specific implementation, the dielectric portion includes a first circuit board and a dielectric layer stacked together, the dielectric layer abutting against the first circuit board and the second radiating portion respectively; the first radiating portion is disposed on the side of the first circuit board away from the dielectric layer, and the first radiating portion is electrically connected to the first circuit board.

[0013] In one specific implementation, a contact feeder is provided on the side of the first circuit board facing the dielectric layer. The contact feeder is connected to the first radiating part through a conductive via in the first circuit board, and the contact feeder is connected to the first feeder.

[0014] In one specific implementation, a second circuit board is further included, which is disposed between the dielectric portion and the support portion and abuts against the support portion; the second radiating portion is disposed on the side of the second circuit board away from the support portion and is electrically connected to the second circuit board.

[0015] In one specific implementation, a coupling feed body is provided on the side of the second circuit board away from the dielectric part, and the coupling feed body is connected to the second feed element; the feed source part is coupled to the second radiating part through the second feed element and the coupling feed body.

[0016] In one specific implementation, the first radiating part, the first circuit board, the dielectric layer, the second radiating part, the second circuit board, the support part, and the feed part are connected by a first connector; the vertical projection of the dielectric layer on the feed part is circular, and the first connector is concentrically arranged with the dielectric layer.

[0017] In one specific implementation, the first circuit board includes a first part and a plurality of second parts. The projection of the first part in the vertical direction of the feed portion is circular. One end of the second part is connected to the first part, and the other end of the second part is away from the first part. The plurality of second parts are arranged circumferentially spaced along the first part. The projection of the second circuit board in the vertical direction of the feed portion is circular. The projections of the first part in the vertical direction of the feed portion and the projections of the second circuit board in the vertical direction of the feed portion are concentric with the projection of the dielectric layer in the vertical direction of the feed portion. The second part, the dielectric layer, the second circuit board, the support portion, and the feed portion are connected by second connectors. The number of second connectors is the same as the number of second parts, and each second connector is connected to one of the second parts.

[0018] In one specific implementation, the projection of the first radiating part onto the feed portion in the vertical direction is circular, the projection of the second radiating part onto the feed portion in the vertical direction is circular, and the projections of the first radiating part onto the feed portion in the vertical direction and the projections of the second radiating part onto the feed portion in the vertical direction are concentric with the projection of the dielectric layer onto the feed portion in the vertical direction.

[0019] In one specific implementation, the feed section includes an upper feed section, a grounding section, and a lower feed section. The upper feed section and the lower feed section are respectively disposed on both sides of the grounding section and are spaced apart from the grounding section. The first radiating section is electrically connected to the upper feed section through the first feed component, and the second radiating section is electrically connected to the lower feed section through the second feed component.

[0020] In one specific implementation, the upper power supply section includes a first contact and a first power divider, the first contact being electrically connected to the first power divider and the first power supply component being electrically connected to the first power supply element; the lower power supply section includes a second contact and a second power divider, the second contact being electrically connected to the second power divider and the second contact being electrically connected to the second power supply component through a conductive via in the power supply section.

[0021] Secondly, this application also provides a communication device including a radio frequency (RF) circuit and a high-gain full-band satellite positioning antenna structure as described in any of the possible embodiments of the first aspect above. The RF circuit is used for communication using the high-gain full-band satellite positioning antenna structure. The RF circuit is connected to the high-gain full-band satellite positioning antenna structure via a feed line.

[0022] Compared with the prior art, the beneficial effects of this application are as follows:

[0023] The high-gain full-band satellite positioning antenna structure provided in this application comprises a first radiating section, a second radiating section, and a feed section arranged sequentially at intervals. The first radiating section is electrically connected to the feed section via a first feed element, and the second radiating section is electrically connected to the feed section via a second feed element. In practical applications, the first radiating section can serve as a high-frequency radiating element, and the second radiating section can serve as a low-frequency radiating element, thereby achieving full-band radiation. A dielectric section is disposed between the first and second radiating sections. In the vertical direction of the feed section, the projection of the dielectric section covers the projection of the first radiating section. The dielectric section abuts against both the first and second radiating sections, supporting the first radiating section and isolating it from the second radiating section. The dielectric section enhances the performance of the first radiating section, resulting in higher efficiency, higher gain, lower axial ratio, and lower return loss in the high-frequency band. Furthermore, the low-frequency band is less affected by the high-frequency band, thus the overall performance of this antenna structure is superior. The first feed element penetrates through the dielectric section and the second radiating section, avoiding increased space occupation and allowing for a smaller antenna structure, which is beneficial for antenna miniaturization, portability, and installation. Attached Figure Description

[0024] Figure 1 A top view of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0025] Figure 2 A side view of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0026] Figure 3 A side view of a portion of the structure of the high-gain full-band satellite positioning antenna provided in this application is shown;

[0027] Figure 4 A top view of the first radiating section and the first circuit board of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0028] Figure 5 A bottom view of the first circuit board of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0029] Figure 6This paper shows an assembly diagram of the first circuit board and the first feed component of the high-gain full-band satellite positioning antenna structure provided in this application;

[0030] Figure 7 A top view of the dielectric layer of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0031] Figure 8 A top view of the second radiating section and the second circuit board of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0032] Figure 9 A bottom view of the second circuit board of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0033] Figure 10 This paper shows an assembly diagram of the second circuit board and the second feeder of the high-gain full-band satellite positioning antenna structure provided in this application;

[0034] Figure 11 This paper shows a top view of the support portion of the high-gain full-band satellite positioning antenna structure provided in this application;

[0035] Figure 12 A side view of the support portion of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0036] Figure 13 The bottom view of the support portion of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0037] Figure 14 A top view of the feed section of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0038] Figure 15 A bottom view of the feed section of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0039] Figure 16 The voltage standing wave ratio (VSWR) parameter diagram of the high-gain full-band satellite positioning antenna structure provided in this application is shown.

[0040] Figure 17 The diagram shows the antenna efficiency parameters of the high-gain full-band satellite positioning antenna structure provided in this application;

[0041] Figure 18 The axial ratio parameter diagram of the high-gain full-band satellite positioning antenna structure provided in this application is shown;

[0042] Figure 19 The low-frequency right-handed circular polarization gain diagram of the high-gain full-band satellite positioning antenna structure provided in this application is shown.

[0043] Figure 20 The low-frequency left-handed circular polarization gain diagram of the high-gain full-band satellite positioning antenna structure provided in this application is shown.

[0044] Figure 21 The high-frequency right-handed circular polarization gain diagram of the high-gain full-band satellite positioning antenna structure provided in this application is shown.

[0045] Figure 22 The high-frequency left-handed circular polarization gain diagram of the high-gain full-band satellite positioning antenna structure provided in this application is shown.

[0046] Figure label:

[0047] 1-First radiating part; 11-First positioning hole; 2-Second radiating part; 21-Second through hole; 22-Fourth positioning hole; 3-Feed part; 31-Seventh positioning hole; 32-Fifth limiting hole; 33-Upper layer feed part; 34-Grounding part; 35-Lower layer feed part; 36-Signal conversion part; 37-Signal port; 38-Intermediate contact; 331-First contact; 332-First power divider; 351-Second contact; 352-Second power divider; 361-First feed connection part; 362-Second feed connection part; 4-Dielectric part; 41-Third through hole; 42-First electrical part Circuit board; 43-Dielectric layer; 44-Contact feeder; 421-Second positioning hole; 422-First part; 423-Second part; 424-First limiting hole; 431-Third positioning hole; 432-Second limiting hole; 5-First feeder; 6-Second feeder; 7-Support part; 71-First through hole; 72-Fourth through hole; 73-First groove; 74-Second groove; 75-Sixth positioning hole; 76-Fourth limiting hole; 8-Second circuit board; 81-Coupled feeder; 82-Fifth positioning hole; 83-Third limiting hole; 9-First connector; 10-Second connector. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of the embodiments of this application are only for illustrating relative positional relationships and do not represent actual scale.

[0049] Specific details are set forth in the following description to aid in understanding this application; however, embodiments of this application can be implemented in various ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the embodiments of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0050] First refer to Figure 1 and Figure 2 , Figure 1 A top view of the high-gain full-band satellite positioning antenna structure provided in this application is shown. Figure 2 A side view of the high-gain full-band satellite positioning antenna structure provided in this application is shown. Figure 1 and Figure 2 As shown, the high-gain full-band satellite positioning antenna structure provided in this application embodiment may include a first radiating part 1, a second radiating part 2 and a feed part 3. The first radiating part 1 and the feed part 3 are respectively disposed on both sides of the second radiating part 2 and are respectively spaced apart from the second radiating part 2.

[0051] A dielectric part 4 is disposed between the first radiating part 1 and the second radiating part 2, and the dielectric part 4 abuts against the first radiating part 1 and the second radiating part 2 respectively. See Figure 2 The coordinate direction in the diagram is shown by the x-axis, which represents the vertical direction of the feed section 3. In the vertical direction of the feed section 3, the projection of the dielectric section 4 overlaps the projection of the first radiating section 1.

[0052] The first radiating part 1 is electrically connected to the feed part 3 via the first feed element 5, and the second radiating part 2 is electrically connected to the feed part 3 via the second feed element 6. The first feed element 5 passes through the dielectric part 4 and the second radiating part 2. Specifically, the first feed element 5 and the second feed element 6 can each adopt a columnar structure, and spring structures can be provided at both ends of the columnar structure. In this way, when affected by external forces, the first feed element 5 and the second feed element 6 can still stably play a connecting role, ensuring the performance stability of this antenna structure.

[0053] The high-gain full-band satellite positioning antenna structure (hereinafter referred to as "this antenna structure") provided in this application embodiment comprises a first radiating part 1, a second radiating part 2, and a feed part 3 arranged sequentially at intervals. The first radiating part 1 is electrically connected to the feed part 3 through a first feed element 5, and the second radiating part 2 is electrically connected to the feed part 3 through a second feed element 6. In practical applications, the first radiating part 1 can serve as a high-frequency radiating element, and the second radiating part 2 can serve as a low-frequency radiating element, thereby achieving full-band radiation. A dielectric part 4 is provided between the first radiating part 1 and the second radiating part 2. In the vertical direction of the feed part 3, the projection of the dielectric part 4 covers the projection of the first radiating part 1. The dielectric part 4 abuts against the first radiating part 1 and the second radiating part 2 respectively. The dielectric part 4 can both support the first radiating part 1 and isolate the first radiating part 1 and the second radiating part 2. The provision of the dielectric part 4 can enhance the performance of the first radiating part 1, resulting in higher efficiency, higher gain, lower axial ratio, and lower return loss in the high-frequency band. Furthermore, the low-frequency band is less affected by the high-frequency band, thus the overall performance of this antenna structure is superior. The first feed element 5 penetrates the dielectric part 4 and the second radiating part 2, which can avoid increasing space occupation, making the size of this antenna structure smaller, which is conducive to antenna miniaturization and easy to carry and install.

[0054] As one possible application scenario, this antenna structure can serve as a Global Navigation Satellite System (GNSS) antenna, operating in the L1 (1575.42MHz), L2 (1227.7MHz), and L5 (1176.45MHz) frequency bands, and can be practically applied to GPS-RTK systems. For example... Figure 3 As shown, the L1 band (high-frequency band) is implemented by the first radiating part 1, and the L2 and L5 bands (low-frequency bands) are implemented by the second radiating part 2. The gain of all three bands can reach above 5.5 dBi, and the axial ratio can be below 1.5. Therefore, this antenna structure can be a right-handed circularly polarized GNSS antenna with full-band, high gain, and low axial ratio.

[0055] In one possible implementation, a support portion 7 can be provided between the second radiating portion 2 and the feed portion 3, with the support portion 7 abutting against both the second radiating portion 2 and the feed portion 3. The dielectric constant of the support portion 7 is lower than that of the dielectric portion 4. Specifically, the support portion 7 can be made of a material with a low dielectric constant, such as plastic, thus reducing its weight and overall antenna structure weight. The support portion 7 serves to support the second radiating portion 2 and enhances its performance, resulting in a wider low-frequency bandwidth for the antenna structure.

[0056] In specific implementation, such as Figure 11As shown, the support part 7 can be provided with a first through hole 71, through which the second power supply component 6 passes. The radial dimension of the first through hole 71 can be less than or equal to the radial dimension of the second power supply component 6. The second power supply component 6 abuts against the hole wall of the first through hole 71. In this way, the second power supply component 6 is positioned and supported by the first through hole 71. Compared with the traditional welded power supply column, it is easier to assemble and has a lower cost.

[0057] In specific implementation, such as Figure 12 and Figure 13 As shown, a first groove 73 can be provided on the side of the support portion 7 facing the feed portion 3, and a second groove 74 can be provided on the side of the support portion 7 facing the second radiating portion 2. The provision of the first groove 73 and the second groove 74 can reduce the dielectric constant of the support portion 7, making the dielectric constant of the already low-dielectric support portion 7 even lower, so that the dielectric constant of the support portion 7 can approach that of air, which can further enhance the performance of the second radiating portion 2, making the low-frequency bandwidth of this antenna structure wider; and it can also reduce the weight of the support portion 7, making the overall weight of this antenna structure lighter. Specifically, the first feed element 5 can pass through the first groove 73, and the second feed element 6 can pass through both the second groove 74 and the first groove 73 at the same time, which can reduce the influence of the support portion 7 on the first feed element 5 and the second feed element 6, and improve the performance of this antenna structure. Specifically, the support part 7 may also be provided with a fourth through hole 72, through which the first power supply 5 passes. The radial dimension of the fourth through hole 72 may be greater than that of the first power supply 5. The first power supply 5 and the hole wall of the fourth through hole 72 are spaced apart to further reduce the influence of the support part 7 on the first power supply 5.

[0058] In actual installation, there can be multiple second feed elements 6, arranged vertically around the feed section 3. The number of support sections 7 is greater than or equal to the number of second feed elements 6, with each second feed element 6 passing through a support section 7. For example, there are four second feed elements 6, with the same central angle between adjacent second feed elements 6; there are also four support sections 7, with each second feed element 6 passing through a support section 7. For example, the support sections 7 can be columnar structures, with each support section 7 not connected to the others; or, the support sections 7 can be strip structures, with one end of each support section 7 connected to the others, forming a cross shape.

[0059] The distance between the second feed element 6 and the center of the first radiating part 1 is greater than the distance between the first feed element 5 and the center of the first radiating part 1. That is, the distance between the second feed element 6 and the center of the first radiating part 1 is farther than the distance between the first feed element 5 and the center of the first radiating part 1. In other words, the second feed element 6 is located on the periphery of the first feed element 5, which can more effectively improve space utilization and is conducive to antenna miniaturization.

[0060] In specific implementation, such as Figure 8 As shown, the second radiating section 2 is provided with a second through hole 21, through which the first feed member 5 passes. The radial dimension of the second through hole 21 is larger than that of the first feed member 5, and there is a gap between the first feed member 5 and the wall of the second through hole 21. The dielectric section 4 is provided with a third through hole 41, through which the first feed member 5 passes. The radial dimension of the third through hole 41 is larger than that of the first feed member 5, and there is a gap between the first feed member 5 and the wall of the third through hole 41. This ensures that the first feed member 5 only passes through the second radiating section 2 and the dielectric section 4, and does not contact the second radiating section 2 or the dielectric section 4, but is conductive with the first radiating section 1.

[0061] In one possible implementation, the dielectric portion 4 may include a first circuit board 42 and a dielectric layer 43 stacked together, with the dielectric layer 43 abutting against both the first circuit board 42 and the second radiating portion 2. The first radiating portion 1 is disposed on the side of the first circuit board 42 facing away from the dielectric layer 43; that is, the first radiating portion 1, the first circuit board 42, the dielectric layer 43, and the second radiating portion 2 are stacked sequentially; the first radiating portion 1 is electrically connected to the first circuit board 42. Specifically, the dielectric layer 43 may adopt a flat, solid structure, such as a columnar structure or a frustum-shaped structure, which can enhance the antenna performance in the high-frequency band. Figure 7 As shown, the third through-hole 41 is specifically disposed on the dielectric layer 43.

[0062] In specific implementation, such as Figure 5 and Figure 6 As shown, a contact feed body 44 is provided on the side of the first circuit board 42 facing the dielectric layer 43. The contact feed body 44 is connected to the first radiating part 1 through a conductive via in the first circuit board 42, that is, the contact feed body 44 is connected to the first radiating part 1 through the conductive via to achieve electrical connection. The contact feed body 44 is connected to the first feed component 5, that is, the contact feed body 44 is directly connected to the first feed component 5 to achieve electrical connection. The feed part 3 is electrically connected to the first radiating part 1 through the first feed component 5, the contact feed body 44, and the conductive via.

[0063] In actual installation, this antenna structure may also include a second circuit board 8, which is disposed between the dielectric part 4 and the support part 7, and abuts against the support part 7. The second radiating part 2 is disposed on the side of the second circuit board 8 away from the support part 7, that is, the first radiating part 1, the first circuit board 42, the dielectric layer 43, the second radiating part 2, the second circuit board 8 and the support part 7 are stacked in sequence; the second radiating part 2 is electrically connected to the second circuit board 8.

[0064] In specific implementation, such as Figure 9 and Figure 10As shown, a coupling feed 81 is provided on the side of the second circuit board 8 opposite to the dielectric part 4, and the coupling feed 81 is spaced apart from the second radiating part 2. The coupling feed 81 is connected to the second feed element 6, that is, the coupling feed 81 and the second feed element 6 are directly connected to achieve electrical connection. The feed part 3 is coupled to the second radiating part 2 through the second feed element 6 and the coupling feed 81. The position of the coupling feed 81 corresponds to the second groove 74 of the support part 7, so that the support part 7 can avoid the coupling feed 81, and the dielectric constant of the support part 7 is not affected, thus the antenna performance is not affected. The coupling feed method combined with the support part 7 provided with the first groove 73 and the second groove 74 can make the low-frequency bandwidth wider, further enhancing the antenna performance in the low-frequency band.

[0065] In one possible connection method, the first radiating part 1, the first circuit board 42, the dielectric layer 43, the second radiating part 2, the second circuit board 8, the support part 7, and the feed part 3 are connected by a first connector 9, thus integrating the various components into a single unit. The vertical projection of the dielectric layer 43 onto the feed part 3 can be circular, and the first connector 9 is concentrically arranged with the dielectric layer 43. Specifically, as shown... Figure 4 As shown, the first radiating part 1 is provided with a first positioning hole 11, and the first circuit board 42 is provided with a second positioning hole 421; as Figure 7 As shown, the dielectric layer 43 is provided with a third positioning hole 431; as Figure 8 As shown, the second radiating part 2 is provided with a fourth positioning hole 22, and the second circuit board 8 is provided with a fifth positioning hole 82; as Figure 11 As shown, the support part 7 is provided with a sixth positioning hole 75; as Figure 14 As shown, the feed part 3 is provided with a seventh positioning hole 31; the first connector 9 passes through each of the above positioning holes to connect the various components into one unit.

[0066] As one possible implementation method, such as Figure 4 and Figure 5 As shown, the first circuit board 42 may include a first part 422 and multiple second parts 423. The projection of the first part 422 onto the feed 3 in the vertical direction is circular. The projection of the second circuit board 8 onto the feed 3 in the vertical direction is also circular. The projections of the first part 422 onto the feed 3 in the vertical direction and the projections of the second circuit board 8 onto the feed 3 in the vertical direction are concentric with the projection of the dielectric layer 43 onto the feed 3 in the vertical direction, making the antenna structure more compact and facilitating antenna miniaturization.

[0067] One end of the second portion 423 of the first circuit board 42 is connected to the first portion 422, and the other end of the second portion 423 is away from the first portion 422. Multiple second portions 423 are spaced apart circumferentially along the first portion 422. Specifically, the second portion 423 can be arranged parallel to the first portion 422, and the second portion 423 can extend radially along the first portion 422. The second positioning hole 421 is located in the first portion 422 of the first circuit board 42. The dielectric layer 43 and the first circuit board 42 can have similar projection shapes in the vertical direction of the feed portion 3. The dielectric layer 43 may include a third portion corresponding to the first portion 422 and a fourth portion corresponding to the second portion 423. The projection of the third portion in the vertical direction of the feed portion 3 is circular.

[0068] The first portion 422 of the first circuit board 42, the third portion of the dielectric layer 43, the second circuit board 8, the support portion 7, and the feed portion 3 are connected by second connectors 10. This restricts relative rotation and movement of the components, further enhancing the stability of the connection. The number of second connectors 10 is the same as the number of second portions 423, and each second connector 10 is connected to one second portion 423. For example, there are four second connectors 10 and four second portions 423, and the central angles between adjacent second portions 423 are the same. Specifically, as shown... Figure 4 As shown, the second part 423 of the first circuit board 42 is provided with a first limiting hole 424; as Figure 7 As shown, the dielectric layer 43 is provided with a second limiting hole 432; as Figure 8 As shown, the second circuit board 8 is provided with a third limiting hole 83; as Figure 11 As shown, the support part 7 is provided with a fourth limiting hole 76; as Figure 14 As shown, the feed section 3 is provided with a fifth limiting hole 32; the second connector 10 passes through each of the above limiting holes to connect the various components.

[0069] In a specific implementation, the projection of the first radiating part 1 onto the feed part 3 in the vertical direction is circular, and the projection of the second radiating part 2 onto the feed part 3 in the vertical direction is also circular. The projections of the first radiating part 1 and the second radiating part 2 onto the feed part 3 in the vertical direction are concentric with the projection of the dielectric layer 43 onto the feed part 3 in the vertical direction. Therefore, the projections of the first radiating part 1, the first portion 422 of the first circuit board 42, the second radiating part 2, and the second circuit board 8 onto the feed part 3 in the vertical direction are concentric with the projection of the third portion of the dielectric layer 43 onto the feed part 3 in the vertical direction, further improving the structural compactness of this antenna structure.

[0070] In one possible implementation, the feed section 3 may include an upper feed section 33, a ground section 34, and a lower feed section 35. The upper feed section 33 and the lower feed section 35 are respectively disposed on both sides of the ground section 34 and spaced apart from it. Specifically, the upper feed section 33 and the lower feed section 35 may each be disposed on a separate circuit board, and the ground section 34 may be made of copper. The first radiating section 1 is electrically connected to the upper feed section 33 through the first feed element 5, and the second radiating section 2 is electrically connected to the lower feed section 35 through the second feed element 6. The upper feed section 33 and the lower feed section 35 are isolated by the ground section 34, which does not affect the functions of the upper feed section 33 and the lower feed section 35. Furthermore, compared to a design where multiple feed sections are distributed on the same plane, this saves antenna design space, facilitates antenna miniaturization, and reduces costs.

[0071] In specific implementation, such as Figure 14 and Figure 15 As shown, the upper power supply section 33 includes a first contact 331 and a first power divider 332. The first contact 331 is electrically connected to the first power divider 332 and also electrically connected to the first power supply component 5, thereby achieving an electrical connection between the first radiating section 1 and the first power divider 332. The lower power supply section 35 includes a second contact 351 and a second power divider 352. The second contact 351 is electrically connected to the second power divider 352 and also electrically connected to the second power supply component 6 through a conductive via in the feed section 3, thereby achieving an electrical connection between the second radiating section 2 and the second power divider 352. The first power divider 332 and the second power divider 352 are isolated by a grounding section 34, ensuring that the performance of each power divider is relatively ideal. The feed section 3 may further include a signal conversion section 36, with a first power divider 332 and a second power divider 352 electrically connected to the signal conversion section 36. The signal conversion section 36 can be connected to the radio frequency (RF) circuit via a cable or transmission line to transmit electrical signals from the RF circuit to the antenna structure for radiation, or to transmit signals received by the antenna structure to the RF circuit. Specifically, the signal conversion section 36 may employ a low-noise amplifier (LNA). The first power divider 332 and the second power divider 352 can be electrically connected to the signal conversion section 36 via signal ports 37. The signal ports 37 can be disposed on the same side as the upper feed section 33 or the lower feed section 35. The signal ports 37 can be further electrically connected to the signal conversion section 36 via a first feed connection section 361 and a second feed connection section 362, which can also be disposed on the same side as the signal conversion section 36.

[0072] For example, there can be four first contacts 331, which are arranged vertically around the feed section 3, with a 90° phase difference between adjacent first contacts 331. There can also be four second contacts 351, which are arranged vertically around the feed section 3, with a 90° phase difference between adjacent second contacts 351. An intermediate contact 38 can be provided on the feed section 3, which is disposed on the same surface as the first contacts 331. The second contacts 351 can be electrically connected to the intermediate contact 38 through conductive vias in the feed section 3, and the intermediate contact 38 is electrically connected to the second power supply component 6, thereby realizing the electrical connection between the second radiating section 2 and the second power divider 352.

[0073] The positions of the first contact 331 and the first power divider 332 correspond to the positions of the first groove 73 of the support 7, so that the support 7 can avoid the first contact 331 and the first power divider 332. The dielectric constant of the support 7 is not affected, which can improve the performance of the antenna structure.

[0074] Figure 16 The diagram shows the voltage standing wave ratio (VSWR) parameters of the high-gain full-band satellite positioning antenna structure provided in this application. The red line in the diagram indicates that the signal conversion unit 36 ​​is disconnected. Looking from the first feed connection 361, within the operating frequency range of 1.15 GHz to 1.24 GHz, the VSWR of the low-frequency radiating element is below 1.5, indicating superior antenna performance. The green line indicates that the signal conversion unit 36 ​​is disconnected. Looking from the second feed connection 362, within the operating frequency range of 1.55 GHz to 1.62 GHz, the VSWR of the high-frequency radiating element is below 1.5, also indicating superior antenna performance.

[0075] Figure 17 The diagram shows the antenna efficiency parameters of the high-gain full-band satellite positioning antenna structure provided in this application. The blue line in the diagram indicates that the signal conversion section 36 is disconnected. Looking from the first feed connection section 361, the efficiency of the low-frequency radiating element is higher than -2dB in the operating frequency range of 1.15GHz to 1.24GHz, which is a superior antenna performance. The yellow line indicates that the signal conversion section 36 is disconnected. Looking from the second feed connection section 362, the efficiency of the high-frequency radiating element is higher than -2dB in the operating frequency range of 1.55GHz to 1.62GHz, which is also a superior antenna performance.

[0076] Figure 18The diagram shows the axial ratio parameters of the high-gain full-band satellite positioning antenna structure provided in this application. The yellow line in the diagram indicates that the signal conversion section 36 is disconnected. Looking from the first feed connection section 361, within the operating frequency range of 1.15 GHz to 1.24 GHz, the axial ratio of the low-frequency radiating elements is below 1.5 dB, indicating superior circular polarization performance of the antenna. The blue line indicates that the signal conversion section 36 is disconnected. Looking from the second feed connection section 362, within the operating frequency range of 1.55 GHz to 1.65 GHz, the axial ratio of the high-frequency radiating elements is below 1.5 dB, also indicating superior circular polarization performance of the antenna.

[0077] Figure 19 The diagram shows the right-handed circular polarization gain of the low-frequency band (L2 and L5 bands) of the high-gain full-band satellite positioning antenna structure provided in this application. Figure 20 The diagram shows the left-handed circular polarization gain of the low-frequency band (L2, L5 bands) of the high-gain full-band satellite positioning antenna structure provided in this application. (Comparison) Figure 19 and Figure 20 At the zenith orientation, the right-hand circular polarization gain is significantly greater than the left-hand circular polarization gain. Right-hand circular polarization performance is a crucial indicator for satellite positioning antennas; therefore, the right-hand circular polarization performance of this antenna structure is superior.

[0078] Figure 21 The high-frequency band (L1 band) right-hand circular polarization gain diagram of the high-gain full-band satellite positioning antenna structure provided in this application is shown. Figure 22 The high-gain full-band satellite positioning antenna structure provided in this application is shown in the left-handed circular polarization gain diagram of the high-frequency band (L1 band). (Comparison) Figure 21 and Figure 22 At the zenith orientation, the right-hand circular polarization gain is much greater than the left-hand circular polarization gain, which also proves that the right-hand circular polarization performance of this antenna structure is superior.

[0079] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited to the above embodiments. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope and spirit of this application. If these modifications and variations fall within the scope of the claims of this application and their equivalents, then the intent of this application also includes these modifications and variations.

Claims

1. A high-gain full-band satellite positioning antenna structure, characterized in that, It includes a first radiating part, a second radiating part, and a feed part, wherein the first radiating part and the feed part are respectively disposed on both sides of the second radiating part and are respectively spaced apart from the second radiating part; A dielectric portion is disposed between the first radiating portion and the second radiating portion, and the dielectric portion abuts against the first radiating portion and the second radiating portion respectively; in the vertical direction of the feed portion, the projection of the dielectric portion covers the projection of the first radiating portion. The first radiating part is electrically connected to the feed source part through a first feeding component, and the second radiating part is electrically connected to the feed source part through a second feeding component. The first feeding component passes through the dielectric part and the second radiating part. A support portion is provided between the second radiating portion and the feed portion, and the support portion abuts against the second radiating portion and the feed portion respectively; the dielectric constant of the support portion is less than the dielectric constant of the dielectric portion; a first groove is provided on the side of the support portion facing the feed portion, and a second groove is provided on the side of the support portion facing the second radiating portion; the first feed element passes through the first groove, and the second feed element passes through the second groove and the first groove; The number of second feeding elements is multiple, and the multiple second feeding elements are arranged vertically around the feed source portion; the number of support portions is greater than or equal to the number of second feeding elements, and each second feeding element passes through one of the support portions; The feed section includes an upper feed section, a grounding section, and a lower feed section. The upper feed section and the lower feed section are respectively disposed on both sides of the grounding section and are spaced apart from the grounding section. The first radiating section is electrically connected to the upper feed section through the first feed component, and the second radiating section is electrically connected to the lower feed section through the second feed component. The upper feed section includes a first contact and a first power divider. The first contact is electrically connected to the first power divider and is also electrically connected to the first feed component. The lower feed section includes a second contact and a second power divider. The second contact is electrically connected to the second power divider and is also electrically connected to the second feed component through a conductive via in the feed section.

2. The high-gain full-band satellite positioning antenna structure according to claim 1, characterized in that, The support portion is provided with a first through hole, through which the second power supply component passes. The radial dimension of the first through hole is less than or equal to the radial dimension of the second power supply component, and the second power supply component abuts against the wall of the first through hole. The second radiating part is provided with a second through hole, the first feeding component passes through the second through hole, the radial dimension of the second through hole is larger than the radial dimension of the first feeding component, and there is a gap between the first feeding component and the hole wall of the second through hole; The dielectric part is provided with a third through hole, through which the first power supply component passes. The radial dimension of the third through hole is greater than that of the first power supply component, and there is a gap between the first power supply component and the wall of the third through hole.

3. The high-gain full-band satellite positioning antenna structure according to claim 1, characterized in that, The dielectric portion includes a first circuit board and a dielectric layer stacked together, and the dielectric layer abuts against the first circuit board and the second radiating portion respectively. The first radiating part is disposed on the side of the first circuit board away from the dielectric layer, and the first radiating part is electrically connected to the first circuit board.

4. The high-gain full-band satellite positioning antenna structure according to claim 3, characterized in that, A contact feeder is provided on the side of the first circuit board facing the dielectric layer. The contact feeder is connected to the first radiating part through a conductive via in the first circuit board. The contact feeder is connected to the first feeder component.

5. The high-gain full-band satellite positioning antenna structure according to claim 3, characterized in that, It also includes a second circuit board, which is disposed between the dielectric part and the support part, and the second circuit board abuts against the support part; The second radiating part is disposed on the side of the second circuit board away from the supporting part, and the second radiating part is electrically connected to the second circuit board.

6. The high-gain full-band satellite positioning antenna structure according to claim 5, characterized in that, A coupling feed body is provided on the side of the second circuit board away from the dielectric part, and the coupling feed body is connected to the second feed element; The feed unit is coupled to the second radiating unit through the second feed element and the coupling feed body.

7. The high-gain full-band satellite positioning antenna structure according to claim 5, characterized in that, The first radiating part, the first circuit board, the dielectric layer, the second radiating part, the second circuit board, the support part, and the feed part are connected by a first connector; The projection of the dielectric layer in the vertical direction of the feed section is circular, and the first connector is concentrically arranged with the dielectric layer.

8. The high-gain full-band satellite positioning antenna structure according to claim 7, characterized in that, The first circuit board includes a first part and a plurality of second parts. The projection of the first part in the vertical direction of the feed portion is circular. One end of the second part is connected to the first part, and the other end of the second part is away from the first part. The plurality of second parts are arranged at circumferential intervals along the first part. The projection of the second circuit board in the vertical direction of the feed portion is circular; the projections of the first portion in the vertical direction of the feed portion and the projections of the second circuit board in the vertical direction of the feed portion are concentric with the projections of the dielectric layer in the vertical direction of the feed portion. The second part, the dielectric layer, the second circuit board, the support part and the feed part are connected by second connectors. The number of second connectors is the same as the number of the second part, and each second connector is connected to one of the second parts.

9. The high-gain full-band satellite positioning antenna structure according to claim 7, characterized in that, The projection of the first radiating part onto the feed portion in the vertical direction is circular, and the projection of the second radiating part onto the feed portion in the vertical direction is circular. The projections of the first radiating part onto the feed portion in the vertical direction and the projections of the second radiating part onto the feed portion in the vertical direction are concentric with the projection of the dielectric layer onto the feed portion in the vertical direction.

10. A communication device, characterized in that, It includes a radio frequency circuit and a high-gain full-band satellite positioning antenna structure as described in any one of claims 1 to 9, wherein the radio frequency circuit is used for communication using the high-gain full-band satellite positioning antenna structure.

Images