Satellite dual-mode antenna assembly

Abstract

The utility model relates to a satellite dual-mode antenna assembly. The satellite dual-mode antenna assembly comprises a circuit substrate; a positioning antenna having a circularly polarized antenna structure; the positioning antenna is provided with a plurality of air arrays, the satellite signal receiving and transmitting antenna is provided with a plurality of air arrays, the positioning antenna and the satellite signal receiving and transmitting antenna are fixedly arranged on the same plane of the circuit substrate and are communicated with a circuit in the circuit substrate, and the plurality of air arrays are arranged around the positioning antenna. According to the utility model, space fusion of two different types of antennas is realized without increasing extra size basically; compared with a traditional satellite dual-mode antenna assembly, the size and the weight are reduced, and the cost is also reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication antenna technical field especially is related to a satellite dual mode antenna assembly. BACKGROUND

[0002] Satellite communication technology is a kind of technology that two or more earth stations are communicated by using artificial earth satellite as relay station to forward radio waves.Satellite dual mode antenna assembly is an antenna integrated with two or more satellite communication system functions, which can simultaneously receive and send signals from different satellite systems.In related technologies, satellite dual mode antenna assembly generally adopts high-frequency board or LDS scheme, and the antenna size is larger, and the weight is heavier, and the antenna cost is also higher. SUMMARY

[0003] The utility model provides a satellite dual mode antenna assembly, aims at at least one of the technical problems existing in prior art.

[0004] The technical scheme of the utility model is a satellite dual mode antenna assembly, which comprises: a circuit substrate; a positioning antenna with a circularly polarized antenna structure; and a satellite signal transceiving antenna with multiple air arrays, wherein the positioning antenna and the satellite signal transceiving antenna are fixedly arranged on the same plane of the circuit substrate and are in communication with the circuit in the circuit substrate, and the multiple air arrays are arranged around the positioning antenna.

[0005] According to some embodiments of the utility model, the air array of the satellite signal transceiving antenna is an inverted F air array.

[0006] According to some embodiments of the utility model, the multiple air arrays of the satellite signal transceiving antenna are uniformly arranged around the positioning antenna, and there is a gap between adjacent air arrays to allow the positioning antenna to radiate outward through the gap.

[0007] According to some embodiments of the utility model, the circuit substrate is square, the positioning antenna is arranged at the center of the circuit substrate, and the satellite signal transceiving antenna comprises four inverted F air arrays arranged at the four corners of the circuit substrate.

[0008] According to some embodiments of the utility model, each inverted F air array comprises an upper plate piece, a feeding pin and a grounding pin connected to the upper plate piece, wherein the feeding pin and the grounding pin are fixedly connected to the circuit substrate, so that the upper plate piece is parallel to the circuit substrate.

[0009] According to some embodiments of the utility model, the upper plate piece is a polygon; and the upper plate piece of each inverted F air array is provided with a chamfered edge at a position away from the positioning antenna, and the feeding pin is connected to the chamfered edge perpendicularly.

[0010] According to some embodiments of the present application, the phase difference of the equal amplitude signals excited by the feeding legs of the multiple inverted F air arrays is 90 degrees in turn.

[0011] According to some embodiments of the present application, the satellite signal transceiving antenna is a left-handed circularly polarized antenna structure.

[0012] According to some embodiments of the present application, the positioning antenna is a right-handed circularly polarized antenna structure.

[0013] According to some embodiments of the present application, the satellite signal transceiving antenna or the positioning antenna is made of ceramic material. In addition, the satellite signal transceiving antenna and the positioning antenna can also be made of ceramic material.

[0014] The beneficial effects of the present application include: innovatively fusing two different types of antennas in space without increasing the additional size; compared with the conventional satellite dual-mode antenna assembly, the size and weight are reduced, and the cost is also reduced; without affecting the working performance of the satellite communication transceiving antenna and the positioning antenna, the communication quality can also be improved.

[0015] In addition, some beneficial effects of the present application will become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view of the structure of the satellite dual-mode antenna assembly according to the embodiments of the present application.

[0017] Figure 2 is a perspective view of the structure of the satellite dual-mode antenna assembly according to the embodiments of the present application.

[0018] The above drawings contain the following reference signs:

[0019] Circuit substrate 1;

[0020] Satellite signal transceiving antenna 2, inverted F air array 22, feeding leg 221, grounding leg 222, upper plate piece 223;

[0021] Positioning antenna 3. DETAILED DESCRIPTION

[0022] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in the following embodiments and drawings, so as to fully understand the purpose, scheme and effect of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0023] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0024] Furthermore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and not for limiting the scope of the invention. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0025] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from one another. For example, without departing from the scope of this disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0026] In the technical solution of this utility model, the satellite dual-mode antenna assembly refers to an antenna capable of simultaneously supporting two different modes, such as different frequency bands or different satellite navigation systems. The satellite dual-mode antenna assembly is an antenna that integrates the functions of two or more satellite communication systems, capable of simultaneously receiving and transmitting signals from different satellite systems. Through its unique design, it can capture and focus weak signals from different satellite systems, and then convert these signals into electrical signals for processing. It utilizes the transmission characteristics of electromagnetic waves to achieve communication with satellites.

[0027] Reference Figures 1 to 2 As shown, Figure 1 This is a frontal view structural schematic diagram of a satellite dual-mode antenna assembly according to an embodiment of the present invention. Figure 2 This is a structural schematic diagram of a satellite dual-mode antenna assembly according to an embodiment of the present invention from another perspective. In some embodiments, a satellite dual-mode antenna assembly according to the present invention includes a circuit board 1, a satellite signal transceiver antenna 2, and a positioning antenna 3. The satellite signal transceiver antenna 2 and the positioning antenna 3 are disposed on the same surface of the circuit board 1. To improve space utilization and reduce the size of the circuit board 1, preferably, the positioning antenna 3 can be disposed in the center of the circuit board 1, and the satellite signal transceiver antenna 2 can be disposed near the corners and edges of the circuit board 1. The satellite signal transceiver antenna 2 and the positioning antenna 3 can be circularly polarized antenna structures.

[0028] It should be noted that the circularly polarized antenna is an antenna capable of generating circularly polarized electromagnetic waves. The electric field vector of the circularly polarized electromagnetic wave rotates around the propagation direction during propagation, forming a circular track. The circularly polarized antenna has many advantages, such as strong anti-interference ability, low sensitivity to multipath effect and atmospheric refraction, and can reduce signal loss caused by polarization mismatch.

[0029] In some embodiments, the circuit board 1 can include a PCB (Printed Circuit Board). Specifically, the PCB is a support body and a carrier for connecting electronic components. The PCB circuit board 1 serves as an electrical connection carrier and provides a fixed support function for the satellite signal transceiver antenna 2 and the positioning antenna 3. The satellite signal transceiver antenna 2 is used to transmit and receive satellite signals. The positioning antenna 3 is used to receive satellite positioning signals.

[0030] It can be understood that the positioning antenna 3 is arranged at the center of the circuit board 1, and the satellite signal transceiver antenna 2 is arranged at the edge of the circuit board 1, which can realize space reuse, reduce the size and weight of the satellite dual-mode antenna assembly, and also reduce the cost of the satellite dual-mode antenna assembly without affecting the performance (such as communication quality and signal reception capability) of the satellite dual-mode antenna assembly. In addition, the satellite signal transceiver antenna 2 and the positioning antenna 3 in the circularly polarized antenna structure can effectively suppress interference signals from different directions and improve communication quality.

[0031] In some embodiments, the satellite signal transceiver antenna 2 includes a plurality of inverted F air array 22. It should be noted that the inverted F air array 22 is a structure of inverted F antenna (IFA). The IFA is a variant structure of monopole antenna, which has the advantages of small size, simple structure, easy matching, low manufacturing cost, etc.

[0032] In the present embodiment, there is a gap between adjacent air arrays (inverted F air arrays 22) to allow the positioning antenna to radiate outward through the gap. Therefore, the arrangement of the air array and the positioning antenna in the embodiment of the present application can reduce the size and weight of the satellite dual-mode antenna assembly, and also reduce the cost of the satellite dual-mode antenna assembly without affecting the performance of the satellite dual-mode antenna assembly.

[0033] Referring to Figure 1 and Figure 2 In a preferred embodiment, the satellite signal transceiver antenna 2 includes four inverted F air arrays 22, and the four inverted F air arrays 22 are arranged at the four corners of the positioning antenna 3 in a uniform and equidistant manner.

[0034] It can be understood that the four inverted F air arrays 22 are arranged at the four corners of the positioning antenna 3, which can maximize the space reuse, thereby reducing the size and volume of the satellite dual-mode antenna assembly without affecting the performance of the satellite dual-mode antenna assembly.

[0035] Referring to Figure 2 In some embodiments, the inverted F air array 22 includes a feed pin 221, a ground pin 222, and an upper plate 223. One end of the feed pin 221 and the ground pin 222 is connected to the upper plate 223, and the other end of the feed pin 221 and the ground pin 222 is connected to the circuit substrate 1. The upper plate 223 is substantially parallel to the circuit substrate 1. The height of the upper plate 223 relative to the circuit substrate 1 is greater than the height of the positioning antenna 3 on the circuit substrate.

[0036] It can be understood that the feed pin 221 is a pin for transmitting radio frequency signals. In the design of the satellite signal transceiving antenna 2, the feed pin 221 is connected to a signal source, such as a transmitter or a receiver, to transmit radio frequency signals to or receive radio frequency signals from the satellite signal transceiving antenna 2. The ground pin 222 is a pin for grounding. The ground pin 222 can improve the stability of the satellite signal transceiving antenna 2 during operation, and grounding the ground pin 222 can also help the satellite signal transceiving antenna 2 form a specific radiation pattern, improving the efficiency of the satellite signal transceiving antenna 2. The feed pin 221 helps to achieve impedance matching between the satellite signal transceiving antenna 2 and the signal source. Impedance matching is key to ensuring that signals do not reflect or attenuate during transmission, which can improve signal transmission efficiency and the performance of the satellite signal transceiving antenna 2.

[0037] In specific embodiments, the upper plate of each inverted F air array is a polygon. The upper plate is provided with a chamfered edge at a position away from the positioning antenna, and the feed pin is connected perpendicularly to the chamfered edge.

[0038] In some embodiments, the phase difference of the equal amplitude signals excited by the feed pins 221 of the plurality of inverted F air arrays 22 is 90 degrees in turn. Specifically, the phase difference is the time difference between the waveforms of two signals. The equal amplitude signal is a signal whose amplitude or power is the same on all inverted F air arrays 22, which means that the strength of the signal is consistent regardless of which inverted F air array 22 it is applied to.

[0039] It should be understood that the phase difference of the equal amplitude signals excited by the feed pins 221 of the plurality of inverted F air arrays 22 is 90 degrees in turn. In this way, the inverted F air arrays 22 are excited to produce circularly polarized waves. Circularly polarized waves are electromagnetic waves whose electric field vectors rotate in a circular trajectory in the direction of propagation. Circularly polarized waves can reduce the problems of multipath effects and polarization mismatch.

[0040] It is easy to understand that the feeding pin 221 of the four inverted F air arrays 22 is sequentially excited with equal amplitude signals with phase difference of 0 degree, 90 degree, 180 degree and 270 degree. Assuming that the reference signal is 0 degree phase, the signal received by the first inverted F air array 22 is synchronized with the reference signal, the signal received by the second inverted F air array 22 lags behind the first inverted F air array 22 by 90 degrees, the third inverted F air array 22 lags behind by 180 degrees, and the fourth inverted F air array 22 lags behind by 270 degrees.

[0041] In some embodiments, the satellite signal transceiving antenna 2 is a left-hand circularly polarized antenna structure. It should be noted that the left-hand circularly polarized antenna is a special type of antenna that can convert electromagnetic waves into left-hand circularly polarized signals. The principle of such an antenna is to convert linearly polarized electromagnetic waves into left-hand circularly polarized signals through a series of special elements. Specifically, the left-hand circularly polarized antenna is composed of two orthogonal antenna elements, and the signal of one antenna element lags behind the signal of the other antenna element, thereby forming a left-hand circularly polarized signal. It can be understood that the left-hand circularly polarized antenna can also effectively suppress interference signals from different directions, thereby improving the communication quality of the satellite dual-mode antenna assembly.

[0042] In some embodiments, the positioning antenna 3 is a right-hand circularly polarized antenna structure. Accordingly, the right-hand circularly polarized antenna is a type of antenna that can convert electromagnetic waves into right-hand circularly polarized signals. The direction of rotation of the electromagnetic wave of the left-hand circularly polarized antenna is counterclockwise, while the direction of rotation of the electromagnetic wave of the right-hand circularly polarized antenna is clockwise. Although they are similar in principle, due to the difference in polarization direction, they have their own application scenarios in different communication systems. In some satellite communication systems, only left-hand circularly polarized or right-hand circularly polarized signal transmission is supported. It can be understood that the right-hand circularly polarized antenna can uniformly radiate energy in different directions, and the right-hand circularly polarized antenna can also effectively suppress interference signals from different directions, thereby improving the communication quality of the satellite dual-mode antenna assembly. It should be understood that the right-hand circularly polarized antenna can uniformly radiate energy in different directions, the positioning antenna 3 is disposed at the center of the circuit substrate 1, the positioning antenna 3 is a right-hand circularly polarized antenna structure, and the signal of the positioning antenna 3 is radiated outward in the gap of the satellite antenna. The right-hand circularly polarized antenna is also beneficial for multipath signal detection and suppression, and is also suitable for dynamic reception.

[0043] In some embodiments, the satellite signal transceiving antenna 2 can be made of ceramic material, and the positioning antenna 3 can be made of ceramic material. Ceramic material has the characteristics of high dielectric constant and good stability, which can effectively improve the performance of the antenna. Further, the ceramic material can be alumina or silicon nitride. Alumina has high hardness and high melting point, and is suitable for making antenna components in high temperature environments. Silicon nitride has excellent wear resistance and corrosion resistance, and is suitable for making antennas that need to withstand harsh environments.

[0044] In conclusion, the satellite dual-mode antenna assembly according to the utility model fuses two different types of antennas in space without increasing the size, adopts the air array scheme, reduces the volume of the satellite dual-mode antenna assembly, reduces the weight and cost of the satellite dual-mode antenna assembly, and meanwhile does not affect the performance of the satellite dual-mode antenna assembly.

[0045] The above is only a preferred embodiment of the utility model, and the utility model is not limited to the above-mentioned implementation manners, as long as the same means achieves the technical effect of the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the disclosure should be included in the protection range of the disclosure. All should belong to the protection range of the utility model. The technical scheme and / or implementation manner can have various different modifications and changes within the protection range of the utility model.

Claims

1. A satellite dual mode antenna assembly, characterized by, The invention relates to a satellite dual-mode antenna assembly comprising: a circuit board (1); a positioning antenna (3) with a circularly polarized antenna structure; a satellite signal transceiving antenna (2) with a plurality of air elements, wherein the positioning antenna (3) and the satellite signal transceiving antenna (2) are fixedly arranged on the same plane of the circuit board (1) and are in communication with the circuit in the circuit board (1), and the plurality of air elements are arranged around the positioning antenna (3).

2. The satellite dual-mode antenna assembly according to claim 1, wherein the air elements of the satellite signal transceiving antenna (2) are inverted F air elements (22).

3. The satellite dual-mode antenna assembly according to claim 1 or 2, wherein the plurality of air elements of the satellite signal transceiving antenna (2) are uniformly arranged around the positioning antenna (3), and there is a gap between adjacent air elements to allow the positioning antenna (3) to radiate outward through the gap.

4. The satellite dual-mode antenna assembly according to claim 2, wherein the circuit board (1) is square, the positioning antenna (3) is arranged at the center of the circuit board (1), and the satellite signal transceiving antenna (2) comprises four inverted F air elements (22) arranged at the four corners of the circuit board (1).

5. The satellite dual-mode antenna assembly according to claim 4, wherein each of the inverted F air elements (22) comprises an upper plate (223) and a feed pin (221) and a ground pin (222) connected to the upper plate (223), wherein the feed pin (221) and the ground pin (222) are fixedly connected with the circuit board (1), so that the upper plate (223) is parallel to the circuit board (1).

6. The satellite dual-mode antenna assembly according to claim 5, wherein the upper plate (223) is polygonal; the upper plate (223) of each of the inverted F air elements (22) is provided with a chamfered edge at a position away from the positioning antenna (3), and the feed pin (221) is connected perpendicularly to the chamfered edge.

7. The satellite dual-mode antenna assembly according to claim 5 or 6, wherein the phase difference of equal amplitude signals excited by the feed pins (221) of the plurality of inverted F air elements (22) is 90 degrees in sequence.

8. The satellite dual-mode antenna assembly according to claim 1, wherein the satellite signal transceiving antenna (2) is a left-handed circularly polarized antenna structure.

9. The satellite dual-mode antenna assembly according to claim 1, wherein the positioning antenna (3) is a right-handed circularly polarized antenna structure.

10. The satellite dual-mode antenna assembly according to claim 1, wherein the satellite signal transceiving antenna (2) and / or the positioning antenna (3) are made of ceramic material.

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