Transmitting Antenna Assembly, Receiving Antenna Assembly, Antenna System and Communication Terminal

Abstract

The present invention provides a transmitting antenna assembly, a receiving antenna assembly, an antenna system and a communication terminal. The transmitting antenna assembly includes at least one transmitting antenna circumferentially arranged along a first metal support ring. The transmitting antenna includes: a first ground plane, a first substrate and a transmitting antenna radiator which are fixed in an annular groove of the first metal support ring and are sequentially overlapped; and a first RF connector, a first coaxial cable and a first feeding point which are sequentially electrically connected, wherein the first feeding point is electrically connected to the transmitting antenna radiator. The present invention can be applied to signal transmission of an aeroengine, thereby avoiding the problems of large design difficulty, generation of a large amount of heat and easy generation of signal noise caused by the contact sliding signal transmission mode of the aeroengine.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular, to a transmitting antenna assembly, a receiving antenna assembly, an antenna system, and a communication terminal. Background Art

[0002] The most significant characteristics of an aero-engine are its complex structure, numerous operating state parameters, and high rotational speed. During the scientific research stage, in order to comprehensively and timely monitor the operating state of an aero-engine, it is necessary to collect and transmit its state information in real time. Due to the particularity of the aero-engine structure, the traditional contact sliding signal transmission method has certain limitations: as the number of measurement points increases, the brush ring and brush filaments increase accordingly, and the system design difficulty will increase exponentially; due to the high-speed relative rotation between the brush ring and brush filaments, a large amount of heat is generated during the friction process, and a coolant needs to be used for cooling, so the system complexity increases accordingly; there is a continuous change in the working contact resistance, which is prone to generating signal noise and thus reducing the reliability of data transmission. Summary of the Invention

[0003] To solve the problems of large design difficulty, generation of a large amount of heat, and easy generation of signal noise caused by the contact sliding signal transmission method used in aero-engines, the present invention provides a transmitting antenna assembly, a receiving antenna assembly, an antenna system, and a communication terminal that can be applied to aero-engines.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention provides a transmitting antenna assembly, including at least one transmitting antenna arranged circumferentially along a first metal support ring, and the transmitting antenna includes:

[0006] A first ground plane, a first substrate, and a transmitting antenna radiator that are fixed in an annular groove of the first metal support ring and are sequentially overlapped; and

[0007] A first RF connector, a first coaxial cable, and a first feeding point that are sequentially electrically connected, wherein the first feeding point is electrically connected to the transmitting antenna radiator.

[0008] Preferably, the transmitting antenna assembly includes a plurality of the transmitting antennas arranged uniformly, and adjacent transmitting antennas are connected by a connecting base.

[0009] Preferably, the annular groove of the first metal support ring is circumferentially opened along the outer wall of the first metal support ring;

[0010] The first ground plane, the first substrate, and the transmitting antenna radiator are sequentially overlapped from the inside to the outside.

[0011] Preferably, the first RF connector is axially disposed within the first metal support ring.

[0012] Preferably, the end of the first RF connector remote from the first coaxial cable is flush with the end face of the first metal support ring.

[0013] Preferably, the first feeding point is located at the central position of the transmitting antenna radiator.

[0014] In a second aspect, the present invention provides a receiving antenna assembly, including a receiving antenna circumferentially arranged along a second metal support ring, the receiving antenna comprising:

[0015] A second ground plane, a second substrate, and a receiving antenna radiator fixedly arranged in an annular groove of the second metal support ring and sequentially overlapped; and

[0016] A second RF connector, a second coaxial cable, and a second feeding point sequentially electrically connected, wherein the second feeding point is electrically connected to the receiving antenna radiator.

[0017] Preferably, the receiving antenna further includes a ground point electrically connected to the receiving antenna radiator.

[0018] Preferably, the receiving antenna further includes an even number of matching resistors electrically connected to the receiving antenna radiator, wherein the even number of matching resistors are arranged adjacent to the ground point and symmetric with respect to the ground point.

[0019] Preferably, the ground point and the second feeding point are symmetrically arranged with respect to the central axis of symmetry of the second metal support ring.

[0020] Preferably, the annular groove of the second metal support ring is circumferentially formed along the inner wall of the second metal support ring;

[0021] The second ground plane, the second substrate, and the receiving antenna radiator are sequentially overlapped from outside to inside.

[0022] Preferably, the second RF connector is axially disposed within the second metal support ring.

[0023] Preferably, the end of the second RF connector remote from the second coaxial cable is flush with the end face of the second metal support ring.

[0024] In a third aspect, the present invention provides an antenna system, the antenna system comprising:

[0025] The transmitting antenna assembly and the receiving antenna assembly as described above, wherein the transmitting antenna assembly and the receiving antenna assembly are concentrically arranged.

[0026] Preferably, the transmitting antenna assembly is sleeved inside the receiving antenna assembly.

[0027] In a fourth aspect, the present invention provides a communication terminal, which includes the transmitting antenna assembly, the receiving antenna assembly or the antenna system.

[0028] By adopting the above technical solutions, the present invention has the following beneficial effects:

[0029] The transmitting antenna assembly and the receiving antenna assembly in the present invention can be applied to an aeroengine to transmit data signals in a near-field wireless communication manner, thereby simplifying the signal transmission system structure of the aeroengine, reducing the system design difficulty, and at the same time avoiding the frictional heat in the contact sliding signal transmission process. Cooling is not required in a general test environment, and the influence of contact resistance in the contact sliding signal transmission method is eliminated, improving the signal transmission stability. In addition, the transmitting antenna assembly can also include a plurality of uniformly arranged transmitting antennas, and each transmitting antenna can work in different frequency bands respectively, thereby expanding the signal transmission bandwidth and avoiding the disadvantage that the signal transmission bandwidth of a single transmitting antenna system is limited and more transmission channels cannot be designed; the receiving antenna assembly can also increase the grounding points and matching resistors, making the working frequency band of the receiving antenna wider. Description of the Drawings

[0030] Figure 1 Schematic structural diagram of the transmitting antenna assembly according to Embodiment 1 of the present invention;

[0031] Figure 2 Exploded view of the transmitting antenna assembly according to Embodiment 1 of the present invention;

[0032] Figure 3 Exploded view of the transmitting antenna according to Embodiment 1 of the present invention;

[0033] Figure 4 Schematic structural diagram of the receiving antenna assembly according to Embodiment 1 of the present invention;

[0034] Figure 5 Exploded view of the receiving antenna assembly according to Embodiment 1 of the present invention;

[0035] Figure 6 Partial structural schematic diagram of the receiving antenna radiator according to Embodiment 1 of the present invention;

[0036] Figure 7 Schematic structural diagram of the antenna system according to Embodiment 3 of the present invention. Detailed Embodiments

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0038] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "the" and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0039] Embodiment 1

[0040] This embodiment provides a transmitting antenna assembly that can be applied to an aeroengine. As Figures 1-3 shown, it includes at least one (exemplarily shown as four in the figure) transmitting antenna 12 arranged circumferentially along the first metal support ring 11. The transmitting antenna 12 includes: a first ground plane 121, a first substrate 122, and a transmitting antenna radiator 123 that are fixed in the annular groove 111 of the first metal support ring 11 and are sequentially overlapped; and a first RF connector 124, a first coaxial cable 125, and a first feeding point 126 that are sequentially electrically connected, wherein the first feeding point 126 is electrically connected to the transmitting antenna radiator 123.

[0041] In this embodiment, the annular groove 111 of the first metal support ring 11 is opened circumferentially along the outer wall of the first metal support ring 11; the first ground plane 121, the first substrate 122, and the transmitting antenna radiator 123 are arc-shaped and are sequentially overlapped from the inside out.

[0042] In this embodiment, when the transmitting antenna assembly includes a plurality of transmitting antennas 12, the transmitting antennas 12 are evenly arranged circumferentially along the first metal support ring 11, and adjacent transmitting antennas 12 are connected by a connecting substrate 13. During operation, each transmitting antenna 12 can operate in different frequency bands, thereby expanding the signal transmission bandwidth and avoiding the disadvantage that the signal transmission bandwidth of a single transmitting antenna is limited and more transmission channels cannot be designed. Moreover, the number of transmitting antennas 12 can be set as needed, realizing the configurability of signal transmission.

[0043] In this embodiment, the first radio frequency connector 124 is axially disposed within the first metal support ring 11, and one end of the first radio frequency connector 124 remote from the first coaxial cable 125 is flush with the end face of the first metal support ring 11. The first coaxial cable 125 is in an L shape, and a section thereof perpendicular to the first radio frequency connector 124 sequentially passes through the first grounding plate 121, the first substrate 122, and the transmitting antenna radiator 123, so that the first feeding point 126 is electrically connected to the outside of the transmitting antenna radiator 123.

[0044] In this embodiment, the first feeding point 126 is located at the center position of the transmitting antenna radiator 123, so that the current emitted from the first feeding point 126 evenly flows through the transmitting antenna radiator 123.

[0045] In this embodiment, the first metal support ring 11 is preferably made of materials such as 316 stainless steel, titanium alloy, or aluminum alloy; the transmitting antenna radiator 123 is preferably formed by a strip-shaped copper sheet, and the arc length range of the transmitting antenna radiator 123 is 2 mm to 80 mm, and the width range is 1 mm to 8 mm; the first substrate 122 is preferably made of materials such as paper-based, epoxy glass cloth-based, composite-based, or aluminum nitride ceramic; the type of the first radio frequency connector 124 is preferably N-type, BNC-type, SMA-type, or TNC-type, etc.; the first coaxial cable 125 is preferably a radio frequency cable of semi-rigid wire or semi-flexible wire, which is composed of an outer circuit layer wrapping a core wire; the first feeding point 126 is preferably designed as a ring to increase the solder joint strength.

[0046] The transmitting antenna assembly of this embodiment can bring the following advantages:

[0047] (1) It can be applied to an aeroengine to transmit data signals through near-field wireless communication, thereby simplifying the structure of the aeroengine signal transmission system and reducing the system design difficulty.

[0048] (2) It avoids the brush ring and brush wire structures. For the near-field wireless communication method, cooling air only needs to be added during the aeroengine test subjects with requirements for intake air temperature, but the system is also relatively simple, and there are no problems such as coolant leakage and heat exchange.

[0049] (3) It adopts a design method of multiple monopole transmitting antennas, which are evenly arranged on the first metal support ring 11. During operation, each transmitting antenna operates in a different frequency band, expanding the signal transmission bandwidth and avoiding the disadvantage that the signal transmission bandwidth of a single transmitting antenna is limited and more transmission channels cannot be designed.

[0050] (4) When the transmitting antenna assembly is installed inside the aeroengine, since it operates in a closed metal environment, it basically shields the electromagnetic interference in the external environment, and at the same time, it will not generate electromagnetic interference to other devices, and the data transmission signal is stable and reliable.

[0051] Embodiment 2

[0052] This embodiment provides a receiving antenna assembly that can be applied to an aeroengine, as Figures 4-6 shown, which includes a receiving antenna 22 arranged circumferentially along the second metal support ring 21. The receiving antenna 22 includes: a second ground plane 221, a second substrate 222, and a receiving antenna radiator 223 that are fixed in the annular groove 211 of the second metal support ring 21 and are sequentially overlapped; and a second RF connector 224, a second coaxial cable 225, and a second feeding point 226 that are sequentially electrically connected, wherein the second feeding point 226 is electrically connected to the receiving antenna radiator 223.

[0053] In this embodiment, the receiving antenna 22 further includes a grounding point 227 that is electrically connected to the receiving antenna radiator 223, and the grounding point 227 is electrically connected to a grounding short wire 229. In addition, the receiving antenna 22 further includes an even number of ( Figure 6 shown as two in the figure) matching resistors 228 that are electrically connected to the receiving antenna radiator 223. Among them, the even number of matching resistors 228 are arranged adjacent to the grounding point 227 and are symmetric with respect to the grounding point 227. By adding the grounding point 227 and the matching resistors 228 in this embodiment, the operating frequency band of the receiving antenna 22 is made wider. Preferably, the matching resistor 228 is implemented by a chip resistor, for example, a 100-ohm chip resistor. Further preferably, the grounding point 227 and the second feeding point 226 are symmetrically arranged with respect to the center axis of the second metal support ring 21.

[0054] In this embodiment, the receiving antenna radiator 223 is an annular antenna radiator composed of a plurality of long strip copper sheets.

[0055] In this embodiment, the annular groove of the second metal support ring 21 is circumferentially opened along the inner wall of the second metal support ring 21; the second ground plane 221, the second substrate 222, and the receiving antenna radiator 223 are sequentially overlapped from outside to inside.

[0056] In this embodiment, the second RF connector 224 is axially arranged inside the second metal support ring 21, and the end of the second RF connector 224 away from the second coaxial cable 225 is flush with the end face of the second metal support ring 21. The second coaxial cable 225 is in an L shape, and the section perpendicular to the second RF connector 224 sequentially passes through the second ground plane 221, the second substrate 222, and the receiving antenna radiator 223, so that the second feeding point 226 is electrically connected to the outside of the receiving antenna radiator 223.

[0057] In this embodiment, the second metal support ring 21 is preferably made of materials such as 316 stainless steel, titanium alloy, or aluminum alloy; the diameter of the receiving antenna radiator 223 preferably ranges from 40 mm to 800 mm, and the width preferably ranges from 0.1 mm to 0.8 mm; the second substrate 222 is preferably made of materials such as paper-based, epoxy glass cloth-based, composite-based, or aluminum nitride ceramic; the type of the second radio frequency connector 224 is preferably N-type, BNC-type, SMA-type, or TNC-type, etc.; the second coaxial cable 225 is preferably a radio frequency cable of semi-rigid wire or semi-flexible wire, which is composed of an outer circuit layer wrapping a core wire; the second feeding point 226 and the grounding point 227 are preferably designed as rings to increase the solder joint strength.

[0058] The receiving antenna assembly of this embodiment can bring the following advantages:

[0059] (1) It can be applied to an aeroengine to receive data signals through near-field wireless communication, thereby simplifying the structure of the aeroengine signal transmission system and reducing the system design difficulty.

[0060] (2) It avoids the brush ring and brush wire structures. For the near-field wireless communication method, cooling air only needs to be added during the aeroengine test subjects that have requirements for the intake air temperature, but the system is also relatively simple and there are no problems such as coolant leakage and heat exchange.

[0061] (3) By adding the grounding point 227 and the matching resistor 228, the operating frequency band of the receiving antenna becomes wider.

[0062] (4) When the receiving antenna assembly is installed inside the aeroengine, since it works in a closed metal environment, it basically shields the electromagnetic interference in the external environment, and at the same time it will not generate electromagnetic interference to other devices, and the data transmission signal is stable and reliable.

[0063] Embodiment 3

[0064] This embodiment provides an antenna system, as Figure 7 shown, which includes the transmitting antenna assembly as described in Embodiment 1 and the receiving antenna assembly as described in Embodiment 2. Among them, the transmitting antenna assembly and the receiving antenna assembly are concentrically arranged, and the transmitting antenna assembly is sleeved inside the receiving antenna assembly. During operation, the axial and radial relative positions of the transmitting antenna assembly and the receiving antenna assembly are ±2 mm and ±1 mm respectively.

[0065] In this embodiment, the operating frequency band of the antenna system is designed to be 1 - 3 GHz, and the transmission signal strength is better than 60 dBm. The antenna system of this embodiment has all the advantages of Embodiment 1 and Embodiment 2.

[0066] Embodiment 4

[0067] This embodiment provides a communication terminal, which includes a transmitting antenna assembly, a receiving antenna assembly or an antenna system as described in the foregoing embodiments. The communication terminal of this embodiment is preferably a communication terminal installed in an aeroengine.

[0068] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A transmitting antenna assembly, characterized in that, It includes a plurality of transmitting antennas arranged circumferentially and uniformly along a first metal support ring, and adjacent transmitting antennas are connected by a connecting substrate. The transmitting antenna includes: A first ground plane, a first substrate, and a transmitting antenna radiator that are fixed in an annular groove of the first metal support ring and are sequentially overlapped; and A first radio frequency connector, a first coaxial cable, and a first feeding point that are sequentially electrically connected, wherein the first feeding point is electrically connected to the transmitting antenna radiator.

2. The transmitting antenna assembly according to claim 1, wherein, The annular groove of the first metal support ring is circumferentially formed along the outer wall of the first metal support ring; The first ground plane, the first substrate, and the transmitting antenna radiator are sequentially overlapped from the inside out.

3. The transmitting antenna assembly according to claim 1, wherein The first radio frequency connector is axially arranged inside the first metal support ring.

4. The transmitting antenna assembly according to claim 3, wherein One end of the first radio frequency connector away from the first coaxial cable is flush with the end face of the first metal support ring.

5. The transmitting antenna assembly according to claim 1, wherein The first feeding point is located at the central position of the transmitting antenna radiator.

6. A receiving antenna assembly, characterized in that, It includes a receiving antenna arranged circumferentially along a second metal support ring. The receiving antenna includes: A second ground plane, a second substrate, and a receiving antenna radiator that are fixed in an annular groove of the second metal support ring and are sequentially overlapped; A second radio frequency connector, a second coaxial cable, and a second feeding point that are sequentially electrically connected, wherein the second feeding point is electrically connected to the receiving antenna radiator; A grounding point electrically connected to the receiving antenna radiator; and An even number of matching resistors electrically connected to the receiving antenna radiator, wherein the even number of matching resistors are arranged adjacent to the grounding point and are symmetric with respect to the grounding point.

7. The receiving antenna assembly according to claim 6, characterized in that, The grounding point and the second feeding point are symmetrically arranged with respect to the central axis of the second metal support ring.

8. The receiving antenna assembly according to claim 6, characterized in that, The annular groove of the second metal support ring is circumferentially formed along the inner wall of the second metal support ring; The second ground plane, the second substrate, and the receiving antenna radiator are sequentially overlapped from the outside in.

9. The receiving antenna assembly according to claim 6, wherein The second radio frequency connector is axially arranged inside the second metal support ring.

10. The receiving antenna assembly according to claim 9, wherein, One end of the second radio frequency connector away from the second coaxial cable is flush with the end face of the second metal support ring.

11. An antenna system, characterized in that, This antenna system includes: The transmitting antenna assembly according to any one of claims 1-5 and the receiving antenna assembly according to any one of claims 6-10, wherein the transmitting antenna assembly and the receiving antenna assembly are concentrically arranged.

12. The antenna system according to claim 11, wherein The transmitting antenna assembly is sleeved inside the receiving antenna assembly.

13. A communication terminal, the communication terminal includes: The transmitting antenna assembly according to any one of claims 1-5; The receiving antenna assembly according to any one of claims 6-10; or The antenna system according to any one of claims 11-12.

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