CN114300867A - Ka frequency channel phased array antenna - Google Patents
Ka frequency channel phased array antenna Download PDFInfo
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Abstract
The invention provides a Ka frequency band phased-array antenna, which comprises a millimeter wave multilayer mixed circuit board, a heat dissipation cold plate, a power supply module, a wave control unit and a frequency conversion module which are sequentially arranged from top to bottom, wherein the millimeter wave multilayer mixed circuit board comprises an array antenna, a multifunctional radio frequency chip, a signal synthesis network unit, a signal power distribution network unit and a power supply control network unit, the array antenna comprises a receiving antenna array and a transmitting antenna array, the receiving antenna array comprises 8 first antenna subarrays distributed by 16 multiplied by 16, and the first antenna subarrays comprise 2048 first antenna array elements; the transmitting antenna array comprises 4 second antenna sub-arrays distributed by 16 x 16, and each second antenna sub-array comprises 1024 second antenna array elements. The Ka frequency band phased array antenna provided by the invention has the advantages of large communication coverage area, long communication distance, wide communication frequency band, large communication capacity, stable transmission performance, low communication equipment cost and the like.
Description
Technical Field
The invention relates to the technical field of phased array antennas, in particular to a Ka frequency band phased array antenna.
Background
The application of satellite communication technology enables the goal of communication services covering global diversification to be realized, and plays a key role in military business and human production and life style in cooperation with the development requirements of other communication modes. However, as the application field of satellite communication technology is continuously expanded, the conventional technical means cannot meet the requirement of data exchange of the satellite in the motion process. In order to adapt to the development of satellite communication, the technology of the communication-in-motion antenna and the development of communication-in-motion antenna products are necessary to be deeply researched.
At present, the communication-in-motion antenna mainly develops towards the direction of the shaped reflecting surface, the panel array antenna and the phased array antenna. The phased array antenna is composed of a plurality of unit antennas such as dipole antennas or microstrip patch antennas, and the scanning of antenna beams in the whole space can be realized by controlling the phase of each unit antenna. The phased array antenna has the advantages of meeting the requirements of satellite communication, such as high scanning speed, strong beam controllability, high antenna reliability and capability of effectively improving system performance, and is gradually one of the hot spots of the antenna research of the modern satellite communication system.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a Ka frequency band phased array antenna which has the advantages of large communication coverage area, long communication distance, wide communication frequency band, large communication capacity, stable transmission performance, low communication equipment cost and the like.
In order to solve the problems, the technical scheme of the invention is as follows:
a Ka frequency band phased-array antenna comprises a millimeter wave multilayer hybrid circuit board, a heat dissipation cold plate, a power supply module, a wave control unit and a frequency conversion module which are sequentially arranged from top to bottom, wherein the millimeter wave multilayer hybrid circuit board comprises an array antenna, a multifunctional radio frequency chip, a signal synthesis network unit, a signal power distribution network unit and a power supply control network unit, the array antenna comprises a receiving antenna array and a transmitting antenna array, the receiving antenna array comprises 8 first antenna sub-arrays distributed by 16X 16, each first antenna sub-array comprises 2048 first antenna array elements, each first antenna array element is realized by a microstrip antenna, and the distance between each first antenna array element in the X direction and the distance between each first antenna array element in the Y direction are both 7.5 mm; the transmitting antenna array comprises 4 second antenna subarrays distributed by 16X 16, each second antenna subarray comprises 1024 second antenna array elements, each second antenna array element is realized by a microstrip antenna, and the distance between the second antenna array element in the X direction and the distance between the second antenna array elements in the Y direction are both 5 mm.
Furthermore, the first antenna array element and the second antenna array element adopt a center feeding mode when the microstrip antenna is fed.
Further, the millimeter wave multilayer hybrid circuit board adopts a multilayer microwave PCB mixed-pressing lamination high-density integration process, and specifically is a blind buried hole and back drilling technology: the array antenna and the multifunctional radio frequency chip are respectively arranged on two sides of the circuit board; the signal synthesis network unit, the signal power distribution network unit and the power supply control network unit are positioned in the middle layers, and metal sheets are arranged among the networks to serve as connection positions.
Further, the heat dissipation cold plate is an antenna structure installation main body, 16 phi 5.5 through holes are formed in the periphery of the heat dissipation cold plate, and the through holes are connected with the application carrier through M5 screws.
Furthermore, the receiving antenna array wave beams are directed to a specific direction in the space according to the instruction of the wave control unit to receive satellite signals and transmit the satellite signals to a receiving channel, and the received signals are processed by the low-noise amplification, phase shift and attenuation functions of the multifunctional radio frequency chip, combined by the signal synthesis network to output frequency conversion and then sent to the communication unit.
Furthermore, the communication unit inputs radio frequency signals, the radio frequency signals are subjected to up-conversion to the signal power distribution network and then transmitted to the transmitting channel, the radio frequency signals are processed by the phase shifting, attenuation and power amplification functions of the multifunctional radio frequency chip and then transmitted to the transmitting antenna array, and beams with specific directions are formed in space to communicate with a satellite.
Furthermore, the Ka frequency band phased array antenna is designed in a high integration degree integrated mode, the electrical performance interface is an integral external interface, the antenna transmitting input interface is of an SMA type, the antenna receiving output is of an SMA type, the power interface is a four-core aerial plug, the debugging interface is of a J30J-15ZKP type, and the control interface is a network interface.
Compared with the prior art, the Ka frequency band phased array antenna provided by the invention has the beneficial effects that:
the Ka-band phased-array antenna provided by the invention integrates a mature design framework, carries out tile-type integrated design on the antenna, the radio frequency and the network, realizes low power consumption while realizing a low profile, and has the advantages of large communication coverage area, long communication distance, wide communication frequency band, large communication capacity, stable transmission performance, low communication equipment cost and the like compared with the antenna structure for realizing satellite communication in the prior art.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a Ka-band phased array antenna according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a millimeter wave multilayer hybrid circuit board in a Ka-band phased array antenna according to an embodiment of the present invention;
fig. 3 is a block diagram illustrating the operation of a Ka-band phased array antenna according to an embodiment of the present invention.
Detailed Description
The following description of the present invention is provided to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention and to make the above objects, features and advantages of the present invention more comprehensible.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual values, and between the individual values may be combined with each other to yield one or more new ranges of values, which ranges of values should be considered as specifically disclosed herein.
Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a Ka-band phased array antenna according to an embodiment of the present invention; fig. 2 is a schematic diagram of a millimeter wave multilayer hybrid circuit board in a Ka-band phased array antenna according to an embodiment of the present invention. The Ka-band phased-array antenna comprises a cover body 10, a millimeter wave multilayer mixed circuit board 1, a heat dissipation cold plate 2, a power supply module 3, a wave control unit 4 and a frequency conversion module 5, wherein the millimeter wave multilayer mixed circuit board 1, the heat dissipation cold plate 2, the power supply module 3, the wave control unit 4 and the frequency conversion module 5 are accommodated in the cover body 10 and are sequentially arranged from top to bottom. The millimeter wave multilayer hybrid circuit board 1 is a core part of a phased array antenna and comprises an array antenna, a multifunctional radio frequency chip, a signal synthesis network, a power supply control network and other units; the heat dissipation cold plate 2 is used for enhancing heat conduction of the chip and ensuring normal work of the system; the power supply module 3 is used for completing conversion and distribution required by various power supplies; the wave control unit 4 is used for resolving the beam direction according to the carrier position information and determining the array weight; the frequency conversion module 5 is used for realizing frequency shifting of radio frequency and intermediate frequency.
Specifically, the millimeter wave multilayer hybrid circuit board 1 includes an antenna layer 11, a control layer 12, a power supply layer 13, an electric/control layer 14, a feeder layer 15, and a chip layer 16, which are arranged from top to bottom, and a shielding layer 17 is arranged between each layer of the structure. The antenna layer 11 is an array antenna, the array antenna includes a receiving antenna array 111 and a transmitting antenna array 112, the receiving antenna array 111 includes 8 first antenna sub-arrays (not numbered) distributed 16 × 16, the first antenna sub-arrays include 2048 first antenna array elements (not numbered), the first antenna array elements are implemented by microstrip antennas, and the distance between the first antenna array elements in the X direction and the distance between the first antenna array elements in the Y direction are both 7.5 mm; the transmit antenna array 112 includes 4 blocks of 16 × 16 distributed second antenna sub-arrays (not numbered), each of the second antenna sub-arrays includes 1024 second antenna elements (not numbered), and the second antenna elements are implemented by microstrip antennas, and the distances between the second antenna elements in the X direction and the second antenna elements in the Y direction are both 5 mm. The control layer 12 includes a signal synthesizing network unit and a signal power dividing network unit, the electric/control layer 14 includes a power supply control network unit, and the chip layer 16 adopts a multifunctional radio frequency chip.
As can be seen from fig. 1 and fig. 2, in the present invention, the array antenna is printed on the top layer of the PCB, the multifunctional rf chip is printed on the bottom layer of the PCB, one rf chip corresponds to a plurality of antenna elements, the received signal combining network is a 1-division 256 combining network, and the transmitted signal power dividing network is a 1-division 128 power dividing network.
Preferably, when the antenna array element is fed by a microstrip antenna, a center feeding mode is adopted, which is convenient for feeding of the array antenna array rear feeding network.
Preferably, the millimeter wave multilayer hybrid circuit board 1 adopts a multilayer microwave PCB mixed-pressing lamination high-density integration process, specifically a blind buried hole back drilling technology: the array antenna and the multifunctional radio frequency chip are respectively arranged on two sides of the circuit board; the signal synthesis network unit, the signal power distribution network unit and the power supply control network unit are positioned in the middle layer, and metal sheets are arranged among the networks to serve as connection positions, so that isolation and electromagnetic compatibility can be guaranteed.
Preferably, the heat dissipation cold plate 2 is an antenna structure mounting main body, and 16 through holes with diameter of 5.5 are formed in the periphery of the antenna structure mounting main body, and the through holes are connected with the application carrier through M5 screws.
Preferably, the wave beam of the receiving antenna array 111 directs to a specific direction in space according to the instruction of the wave control unit to receive the satellite signal and transmit the satellite signal to the receiving channel, and the received signal is processed by the low noise amplification, phase shift and attenuation functions of the multifunctional radio frequency chip, and then is combined by the signal synthesis network to output frequency conversion and is sent to the communication unit of the wave control unit 4.
Preferably, the communication unit inputs a radio frequency signal, performs up-conversion on the radio frequency signal to a signal power distribution network, transmits the signal to the transmitting channel, performs phase shifting, attenuation and power amplification on the signal by using the multifunctional radio frequency chip, transmits the signal to the transmitting antenna array 112, and forms a beam with a specific direction in space to communicate with a satellite.
In the invention, the Ka frequency band phased array antenna is designed in a high integration degree integrated mode, the electrical performance interface is an integral external interface, and the interface table is as shown in table 1:
table 1: description of the respective interfaces
Fig. 3 is a block diagram of the operating principle of the Ka-band phased array antenna according to the embodiment of the present invention. The Ka frequency band phased array antenna can specify the beam direction to communicate with a satellite, and the specific working process is as follows:
(1) receiving a working process: the receiving channel phase shifter performs phase shifting according to the wave control instruction, an antenna wave beam is directed to a specific direction in space to receive satellite signals, the array antenna transmits the received satellite signals to the receiving channels, each receiving channel has the functions of low-noise amplification, phase shifting, attenuation and the like, after the receiving channels process the signals, the receiving signals are combined through a signal synthesis network to output frequency conversion and then are sent to a communication unit;
(2) and (3) launching a working process: the communication unit inputs radio frequency signals to the power distribution network through up-conversion, the radio frequency signals are sent to the transmitting channel through the power distribution network to be subjected to phase shifting, attenuation and power amplification, and then the radio frequency signals are transmitted to the antenna unit to be radiated, wherein the transmitting channel phase shifter is used for phase shifting according to a wave control instruction, a wave beam with a specific direction is formed in space, and communication transmission is carried out with a satellite.
The Ka band phased array antenna designed by the embodiment is a 0.45-meter Ka band phased array antenna, and the technical indexes are as shown in table 2:
table 2: technical index of Ka frequency band phased array antenna
As can be seen from table 2, compared with other types of antenna structures, the 0.45-meter Ka-band phased array antenna designed in this embodiment has the advantages of large communication coverage area, long communication distance, wide communication frequency band, large communication capacity, stable transmission performance, low communication equipment cost, and the like.
Compared with the prior art, the Ka frequency band phased array antenna provided by the invention has the beneficial effects that:
the Ka-band phased-array antenna provided by the invention integrates a mature design framework, carries out tile-type integrated design on the antenna, the radio frequency and the network, realizes low power consumption while realizing a low profile, and has the advantages of large communication coverage area, long communication distance, wide communication frequency band, large communication capacity, stable transmission performance, low communication equipment cost and the like compared with the antenna structure for realizing satellite communication in the prior art.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (7)
1. A Ka frequency band phased-array antenna is characterized by comprising a millimeter wave multilayer mixed circuit board, a heat dissipation cold plate, a power supply module, a wave control unit and a frequency conversion module which are sequentially arranged from top to bottom, wherein the millimeter wave multilayer mixed circuit board comprises an array antenna, a multifunctional radio frequency chip, a signal synthesis network unit, a signal power distribution network unit and a power supply control network unit, the array antenna comprises a receiving antenna array and a transmitting antenna array, the receiving antenna array comprises 8 first antenna subarrays distributed by 16X 16, each first antenna subarray comprises 2048 first antenna array elements, each first antenna array element is realized by a microstrip antenna, and the distance between each first antenna array element in the X direction and the distance between each first antenna array element in the Y direction are 7.5 mm; the transmitting antenna array comprises 4 second antenna subarrays distributed by 16X 16, each second antenna subarray comprises 1024 second antenna array elements, each second antenna array element is realized by a microstrip antenna, and the distance between the second antenna array element in the X direction and the distance between the second antenna array elements in the Y direction are both 5 mm.
2. The Ka-band phased array antenna of claim 1, wherein the first antenna element and the second antenna element are fed to the microstrip antenna in a center feed manner.
3. The Ka-band phased-array antenna according to claim 1, wherein the millimeter wave multilayer hybrid circuit board adopts a multilayer microwave PCB mixed-compression lamination high-density integration process, in particular to a blind buried hole back drilling technology: the array antenna and the multifunctional radio frequency chip are respectively arranged on two sides of the circuit board; the signal synthesis network unit, the signal power distribution network unit and the power supply control network unit are positioned in the middle layers, and metal sheets are arranged among the networks to serve as connection positions.
4. The Ka-band phased array antenna according to claim 1, wherein the heat dissipation cold plate is an antenna structure mounting main body, 16 phi 5.5 through holes are formed in the periphery of the antenna structure mounting main body, and the through holes are connected with the application carrier through M5 screws.
5. The Ka-band phased array antenna according to claim 1, wherein the receiving antenna array beams are directed to a specific direction in space according to the instruction of the wave control unit to receive satellite signals and transmit the satellite signals to a receiving channel, and the received signals are processed by the low noise amplification, phase shift and attenuation functions of the multifunctional radio frequency chip, combined by the signal synthesis network to output frequency conversion, and then sent to the communication unit.
6. The Ka-band phased array antenna of claim 5, wherein the communication unit inputs a radio frequency signal, the radio frequency signal is up-converted to the signal power distribution network and then transmitted to a transmitting channel, the radio frequency signal is processed by the phase shifting, attenuation and power amplification functions of the multifunctional radio frequency chip and then transmitted to the transmitting antenna array, and a beam with a specific direction is formed in space to communicate with a satellite.
7. The Ka-band phased array antenna of any one of claims 1 to 6, wherein the Ka-band phased array antenna is designed for high integration, the electrical interface is an integral external interface, the antenna transmission input interface is of an SMA type, the antenna reception output is of an SMA type, the power interface is a quad-core aviation plug, the debugging interface is of a J30J-15ZKP type, and the control interface is a network interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210071435.XA CN114300867A (en) | 2022-01-21 | 2022-01-21 | Ka frequency channel phased array antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210071435.XA CN114300867A (en) | 2022-01-21 | 2022-01-21 | Ka frequency channel phased array antenna |
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| CN114300867A true CN114300867A (en) | 2022-04-08 |
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| CN202210071435.XA Pending CN114300867A (en) | 2022-01-21 | 2022-01-21 | Ka frequency channel phased array antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709620A (en) * | 2022-04-18 | 2022-07-05 | 无锡威孚高科技集团股份有限公司 | Waveguide antenna applied to 4D imaging millimeter wave radar |
| CN115996535A (en) * | 2023-03-23 | 2023-04-21 | 成都雷电微力科技股份有限公司 | Ka frequency band power amplifier architecture |
| CN116470285A (en) * | 2023-05-18 | 2023-07-21 | 西安工业大学 | Near-field focusing phased array antenna for generating broadband strong pulse modulation radiation field |
| CN116914447A (en) * | 2023-09-14 | 2023-10-20 | 成都锐芯盛通电子科技有限公司 | Dual-band multichannel SIP module |
| CN117080745A (en) * | 2023-10-18 | 2023-11-17 | 成都天锐星通科技有限公司 | Integrated phased array antenna system and phased array antenna terminal |
-
2022
- 2022-01-21 CN CN202210071435.XA patent/CN114300867A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709620A (en) * | 2022-04-18 | 2022-07-05 | 无锡威孚高科技集团股份有限公司 | Waveguide antenna applied to 4D imaging millimeter wave radar |
| CN115996535A (en) * | 2023-03-23 | 2023-04-21 | 成都雷电微力科技股份有限公司 | Ka frequency band power amplifier architecture |
| CN115996535B (en) * | 2023-03-23 | 2023-08-08 | 成都雷电微力科技股份有限公司 | Ka frequency band power amplifier architecture |
| CN116470285A (en) * | 2023-05-18 | 2023-07-21 | 西安工业大学 | Near-field focusing phased array antenna for generating broadband strong pulse modulation radiation field |
| CN116470285B (en) * | 2023-05-18 | 2024-02-23 | 西安工业大学 | Near-field focusing phased array antenna for generating broadband strong pulse modulation radiation field |
| CN116914447A (en) * | 2023-09-14 | 2023-10-20 | 成都锐芯盛通电子科技有限公司 | Dual-band multichannel SIP module |
| CN116914447B (en) * | 2023-09-14 | 2023-12-22 | 成都锐芯盛通电子科技有限公司 | Dual-band multichannel SIP module |
| CN117080745A (en) * | 2023-10-18 | 2023-11-17 | 成都天锐星通科技有限公司 | Integrated phased array antenna system and phased array antenna terminal |
| CN117080745B (en) * | 2023-10-18 | 2024-01-19 | 成都天锐星通科技有限公司 | Integrated phased array antenna system and phased array antenna terminal |
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