CN115173081A - K-frequency-band extensible tile-type sub-array, phased-array antenna and satellite system - Google Patents

K-frequency-band extensible tile-type sub-array, phased-array antenna and satellite system Download PDF

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Publication number
CN115173081A
CN115173081A CN202210641170.2A CN202210641170A CN115173081A CN 115173081 A CN115173081 A CN 115173081A CN 202210641170 A CN202210641170 A CN 202210641170A CN 115173081 A CN115173081 A CN 115173081A
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China
Prior art keywords
band
tile
interface
type
power supply
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CN202210641170.2A
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Inventor
刘巍巍
韩威
贾世旺
冯磊
陈文超
张安学
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Xian Jiaotong University
CETC 54 Research Institute
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Xian Jiaotong University
CETC 54 Research Institute
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Priority to CN202210641170.2A priority Critical patent/CN115173081A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
    • H01Q3/38—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters the phase-shifters being digital

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Abstract

This application is applicable to the satellite communication field, provides a K frequency channel extensible tile formula subarray, phased array antenna and satellite system, and this tile formula subarray includes: the K-band tile type frequency converter comprises a K-band tile type frequency converter and a plurality of K-band multi-channel tile type components; the first side surface of each K-band multi-channel tile type component is provided with a sub-array digital phased-array antenna, and the second side surface is provided with a first radio frequency interface and a first power supply control interface; the K-frequency band tile type frequency converter is provided with a plurality of second radio frequency interfaces and a plurality of second power supply control interfaces; the K-band multichannel tile type assembly is connected with the K-band tile type frequency converter through a first radio frequency interface and a second radio frequency interface, and a first power supply control interface is connected with a second power supply control interface. The method and the device can realize low profile height, simplify the structure, improve maintainability and expandability and realize digital application design of the subarray.

Description

K-frequency-band extensible tile-type sub-array, phased-array antenna and satellite system
Technical Field
The application belongs to the field of satellite communication, and particularly relates to a K frequency band extensible tile type subarray, a phased array antenna and a satellite system.
Background
After the phased array antenna is developed through a passive phased array and an active analog phased array, the phased array antenna is developed towards a light control array, a digital array and an ultra wide band digital array step by step, the light control array system is limited by the conversion efficiency of a photoelectric device and the photoelectric hybrid integration level at present, the digital array is favored by the flexible multi-beam capability, along with the rapid development of a digital circuit, the digital integration capability is gradually improved, and the digital-analog limit gradually approaches to an antenna end, so that the phased array based on the digital TR has better vitality.
Due to the high frequency band applied to satellite communication, the corresponding array antenna channel spacing is small, and is only a few millimeters. If each channel is digitized, the integration difficulty is too high, the power consumption is huge, and the realization is impossible. In engineering, a sub-array level digitization method is often adopted to realize a phased array antenna system. The sub-array unit in the phased array antenna is the core part of the phased array system, and the integration level of the sub-array unit determines the section height and the weight of the whole system. Currently, the equipment is very demanding on the volume and weight of the phased array antenna. Phased array antennas are broadly divided into two types in an integrated manner: one is brick type structure, and the other is tile type structure. The phased array antenna of the brick structure is heavy and bulky. Tile structures are common in analog phased array antennas. The phased array of the tile-type extensible digital sub-array has the defects of large section height, complex structure, maintainability and extensibility at present.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a tile type subarray with expandable and digitalized K frequency band, which can realize low profile height, simplify the structure and improve maintainability and expandability.
In a first aspect, an embodiment of the present application provides a K-band extensible tile type subarray, including a K-band tile type frequency converter and a plurality of K-band multichannel tile type components;
a first side face of each K-band multi-channel tile-type component is provided with a sub-array digital phased-array antenna, and a second side face is provided with a first radio frequency interface and a first power supply control interface; the K-frequency band tile type frequency converter is provided with a plurality of second radio frequency interfaces and a plurality of second power supply control interfaces;
the K-band multichannel tile type assembly is connected with the K-band tile type frequency converter through a first radio frequency interface and a second radio frequency interface, and a first power supply control interface is connected with a second power supply control interface; the first radio frequency interface adopts SMP male head and adopts SMP female second radio frequency interface to plug; the first power supply control interface and the second power supply control interface are connected to form an elastic low-frequency connector.
In a possible implementation manner of the first aspect, the K-band multichannel tile assembly includes a first shell, a sub-array digital phased-array antenna, a first radio frequency interface, and a first power supply control interface;
the subarray digital phased array antenna is arranged on the first side face of the first shell; the first radio frequency interface is arranged on the second side surface of the first shell; the first power supply control interface is arranged on the second side face of the first shell;
the first side surface of the first shell is opposite to the second side surface of the first shell, and the subarray digital phased array antenna is connected with the first radio frequency interface.
In a possible implementation manner of the first aspect, the digital phased array antenna of the sub-array is arranged in an N × M array, where N and M are both positive integers.
In a possible implementation manner of the first aspect, the K-band tile-type frequency converter includes a second shell, a second radio frequency interface, a second power supply control interface, an intermediate frequency interface, a third power supply control interface, and a local oscillator interface;
the second radio frequency interface is arranged on the first side surface of the second shell; the number of the second radio frequency interfaces is multiple;
the second power supply control interface is arranged on the first side surface of the second shell; the number of the second power supply control interfaces is multiple;
the intermediate frequency interface is arranged on the second side surface of the second shell;
the third power supply control interface is arranged on the second side surface of the second shell; the third power supply control interface can be connected with an external power supply and supplies power to the K-band tile type frequency converter;
the local oscillation interface is arranged on the second side face of the second shell; the local oscillator interface is used for being connected with an external local oscillator;
the first side face of the second shell is opposite to the second side face of the second shell, and a second radio frequency interface of the K-band tile-type frequency converter is connected with the intermediate frequency interface; and the second power supply control interface is connected with the third power supply control interface and supplies power for the plurality of K-band multi-channel tile-type components.
In a possible implementation manner of the first aspect, a second side surface of the first housing is provided with a fixing hole, a first side surface of the second housing is provided with a mounting hole correspondingly matched with the fixing hole, and the K-band multichannel tile assembly and the K-band tile frequency converter are assembled through the fixing hole and the mounting hole;
the fixing hole and the mounting hole limit the connection between the first radio frequency interface and the second radio frequency interface.
In a possible implementation manner of the first aspect, the link of the tile sub-array includes N × M K-band multi-channel tile component links and K-band tile frequency converter links;
the K-band multichannel tile type component link comprises a first amplifier, a phase shifter, a second amplifier, an attenuator and a power divider;
the K-band tile type frequency converter link comprises a first filter, a third amplifier, a second filter, a fourth amplifier, a frequency mixer, a local oscillator amplifier, an intermediate frequency band-pass filter, a first intermediate frequency amplifier, a delayer, a second intermediate frequency amplifier and a third filter;
the first amplifier, the phase shifter, the second amplifier, the attenuator and the power divider are connected in sequence;
the K-band tile-type frequency converter link, the first filter, the third amplifier, the second filter, the fourth amplifier, the mixer, the intermediate frequency band-pass filter, the first intermediate frequency amplifier, the delay, the second intermediate frequency amplifier and the third filter are connected in sequence;
the local oscillator amplifier is connected with the frequency mixer.
In a second aspect, an embodiment of the present application provides a signal processing method for a K-band scalable tile type subarray, including:
amplifying, controlling and synthesizing the radio frequency signal through a K-frequency band multi-channel tile type assembly, and outputting a first signal;
filtering, amplifying, mixing and delaying the first signal through a K-frequency-band tile-type frequency converter, and then outputting a second signal;
and inputting the second signal output by the K-band tile-type frequency converter into a system for ADC sampling, and converting the analog signal of the subarray into a digital signal.
The second aspect may specifically be implemented as follows: the K-frequency band extensible tile type sub-array outputs signals collected by a sub-array digital phased array antenna into first signals through a first radio frequency interface; inputting the first signal into a K-band tile type frequency converter through a second radio frequency interface; outputting a first signal input into the K-band tile type frequency converter into a second signal through an intermediate frequency interface; and inputting the second signal output by the intermediate frequency interface into a system for ADC sampling, and converting the subarray analog signal into a digital signal.
In a third aspect, the present application provides a phased array antenna comprising a K-band scalable tile sub-array as described in any one of the first aspect.
In a fourth aspect, the present application provides a satellite system, at least one comprising a phased array antenna as claimed in the second aspect.
It can be understood that, for the beneficial effects of the second aspect, the third aspect and the fourth aspect, reference may be made to the relevant description in the first aspect, and details are not described herein again.
Compared with the prior art, the application has at least the following beneficial effects:
the K-band multi-channel tile type component and the K-band tile type frequency converter are connected into a K-band extensible tile type sub-array through SMP male and female connectors and an elastic low-frequency connector; the tile-type sub-array is also subjected to expanded layout according to array surface design of the sub-array digital phased-array antenna, so that the low profile height is realized, the structure is simplified, the maintainability and the expandability are improved, and the sub-array digital application design is realized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a K-band scalable tile subarray according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a K-band multi-channel tile assembly according to an embodiment of the present application;
fig. 3 is a schematic diagram of an internal structure of a K-band multi-channel tile assembly according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a K-band tile-type frequency converter according to an embodiment of the present application;
fig. 5 is a link diagram of a K-band scalable tile sub-array according to an embodiment of the present application.
In the figure, a 100-K frequency band multi-channel tile assembly comprises 101, a first shell, 1011, a digital phased array antenna of a subarray, 1012, a box body, a 1013 cover plate, 1014-TR assembly amplification function layers, 1015, an amplitude control function layer, 1016, a power supply control function layer, 102, a first radio frequency interface, 103, a first power supply control interface and 104, wherein the first shell is a first shell;
200-K band tile frequency converter, 202-second radio frequency interface, 203-second power supply control interface, 204-intermediate frequency interface, 205-third power supply control interface, 206-local oscillator interface, 207-mounting hole, 300-tile sub-array link, 301-K band multichannel tile component link, 302-K band tile frequency converter link, 3011-first amplifier, 3012-phase shifter, 3013-second amplifier, 3014-attenuator, 3015-power divider, 3021-first filter, 3022-third amplifier, 3023-second filter, 3024-fourth amplifier, 3025-mixer, 3026-local oscillator amplifier, 3027-intermediate frequency bandpass filter, 3028-first intermediate frequency amplifier, 3029-delay, 30210-second intermediate frequency amplifier, 30211-third filter.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
The tile type extensible phased array of the digital sub-array has the defects of large section height, complex structure, maintainability and extensibility at present, and needs to be improved urgently.
Based on the above problem, in an embodiment of the present application, a tile type sub-array with an expandable K frequency band includes: the K-band tile type frequency converter comprises a K-band tile type frequency converter and a plurality of K-band multi-channel tile type components; the first side surface of each K-band multi-channel tile type component is provided with a sub-array digital phased-array antenna, and the second side surface is provided with a first radio frequency interface and a first power supply control interface; the K frequency band tile type frequency converter is provided with a plurality of second radio frequency interfaces and a plurality of second power supply control interfaces; the K-band multichannel tile type assembly is connected with the K-band tile type frequency converter through a first radio frequency interface and a second radio frequency interface, and a first power supply control interface is connected with a second power supply control interface. The tile type subarray can realize low profile height, simplify the structure, improve maintainability and expandability and realize digital application design of the subarray.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a K-band scalable tile-type sub-array according to an embodiment of the present application, and referring to fig. 1, the K-band scalable tile-type sub-array includes a plurality of K-band multichannel tile-type assemblies 100 and a K-band tile-type frequency converter 200. Fig. 1 (a) and (b) show the structure of the K-band scalable tile subarray viewed from different angles, respectively.
A first side surface of each K-band multichannel tile-type component 100 is provided with a subarray digital phased-array antenna 1011, and a second side surface is provided with a first radio frequency interface 102 and a first power supply control interface 103; the K-band tile type frequency converter 200 is provided with a plurality of second radio frequency interfaces 202 and a plurality of second power supply control interfaces 203; the plurality of K-band multi-channel tile assemblies 100 and the K-band tile frequency converter 200 are connected through a first radio frequency interface 102 and a second radio frequency interface 202, and a first power supply control interface 103 is connected with a second power supply control interface 203.
Specifically, a first radio frequency interface 102 adopting an SMP male connector and a second radio frequency interface 202 adopting an SMP female connector are inserted into each other; the first power supply control interface 103 and the second power supply control interface 203 are connected as a low frequency connector having elasticity.
Specific structure of each K-band multichannel tile assembly 100 referring to fig. 2, (a) and (b) in fig. 2 are respectively structural diagrams of the K-band multichannel tile assembly 100 viewed from different angles.
K frequency channel multichannel tile formula subassembly includes: a first housing 101, a sub-array digital phased array antenna 1011, a first radio frequency interface 102 and a first power control interface 103. A digitized phased array antenna 1011 is disposed on a first side of the first housing 101; the first radio frequency interface 102 is arranged on the second side surface of the first shell 101; the first power supply control interface 103 is provided at the second side of the first casing 101. Wherein, the first side of the first casing 101 is opposite to the second side of the first casing 101, and the digital phased array antenna 1011 is connected with the first radio frequency interface 102.
Specifically, the digital phased array antennas are arranged in an N × M array, and N and M are positive integers.
Wherein, referring to fig. 3, each K-band multichannel tile assembly has a multilayer stack structure comprising: three functional layers are stacked in a three-dimensional mode by applying a three-dimensional stacking technology to form a high-density integrated TR component functional module, wherein the three functional layers comprise a TR component amplification functional layer 1014, a magnitude-phase control functional layer 1015 and a power supply control functional layer 1016; the case 1012, the function module, and the cover 1013 are press-fitted to form a shingle assembly. Fig. 3 (a) and (b) are internal structural diagrams of the K-band multi-channel tile assembly 100 viewed from different angles
The assembly of the TR component functional module and the structure is realized by applying a press-fit and seal-welding assembly mode, the TR component which can be flexibly expanded is realized, and the microwave millimeter wave radar has very wide application value and usability technical effect in the field of microwave millimeter wave radar communication with strict requirements.
Illustratively, the TR component amplifying functional layer comprises an amplifier chip and a multilayer ceramic substrate, and is used for amplifying radio-frequency signals. And the amplitude-phase control functional layer is connected with the TR component amplification functional layer, comprises 16 paths of amplitude-phase control multifunctional chips and a synthesis network, and synthesizes and outputs the radio-frequency signals. And the power supply control functional layer is connected with the amplitude and phase control functional layer of the TR component, comprises a capacitor, a resistor, a radio frequency port and a serial-parallel conversion chip, transmits a radio frequency signal to the outside of the component, and simultaneously transmits a power supply control signal to the amplitude and phase control functional layer of the TR component after processing.
Illustratively, the functional layers of the above parts are interconnected through interlayer bumps, so as to realize interlayer radio frequency and power supply control interconnection and provide a structural support function.
Illustratively, a structural housing 1012 and a cover 1013, wherein the structural housing 1012 features include dimensions of 29.2mm x 7mm,16 media pin connectors, four cavities in the housing walls for receiving press-fit snaps, and a 27.2mm x 5mm cavity in the housing interior. The cover features included 29.2mm by 1mm size stud holes that could be screwed with M2 screws, an SMP connector, a 4mm by 12mm bore hole that could hold the elastomeric connector. The connector connected with the antenna is made of a cylindrical dielectric material, a hole is formed in the middle of the dielectric material, one end of the filling part is a needle, the other end of the filling part is a fuzz button, one side of the connector needle is connected with the antenna, and one side of the fuzz button is connected with the TR three-dimensional stacking module.
Referring to fig. 4, fig. 4 (a) and (b) are respectively structural diagrams of the K-band tile-type frequency converter 200 viewed from the front and back sides.
Specifically, the K-band tile converter 200 includes: a second shell 201, a second radio frequency interface 202, a second power supply control interface 203, an intermediate frequency interface 204, a third power supply control interface 205 and a local oscillator interface 206. The second rf interface 202 is disposed on the first side of the second housing 201, and the number of the second rf interfaces 202 is multiple. The second power supply control interface 203 is disposed on the first side of the second housing 201, and the second power supply control interface 203 is plural. The intermediate frequency interface 204 is disposed on the second side of the second housing 201. The third power supply control interface 205 is disposed on the second side surface of the second casing 201, and the third power supply control interface 205 can be connected to an external power supply and a control board to provide power supply and control signals for the K-band tile-type frequency converter. The local oscillator interface 206 is disposed on the second side of the second housing 201, and is configured to connect to an external local oscillator. The first side surface of the second shell 201 is opposite to the second side surface of the second shell 201, and the second radio frequency interface 202 is connected to the intermediate frequency interface 204; the second power supply control interface 203 is connected with the third power supply control interface 205, and provides power supply and control signals for the multiple K-band multi-channel tile-type components.
Specifically, the second side surface of the first casing 101 is provided with a fixing hole 104, and the first side surface of the second casing is provided with a mounting hole 207 correspondingly matched with the fixing hole. The K-band multi-channel tile assembly 100 and the K-band tile frequency converter 200 are assembled through the fixing hole 104 and the mounting hole 207, and the fixing hole 104 and the mounting hole 207 limit the connection between the first radio frequency interface 102 and the second radio frequency interface 202.
Referring to fig. 5, a link 300 of a tiled sub-array comprises N × M K-band multi-channel tiled component links 301 and K-band tiled frequency converter links 302.
The K-band multi-channel tile component link 301 includes a first amplifier 3011, a phase shifter 3012, a second amplifier 3013, an attenuator 3014, and a power divider 3015.
The K-band tile-type frequency converter chain 302 includes a first filter 3021, a third amplifier 3022, a second filter 3023, a fourth amplifier 3024, a mixer 3025, a local oscillator amplifier 3026, an intermediate frequency band-pass filter 3027, a first intermediate frequency amplifier 3028, a delay 3029, a second intermediate frequency amplifier 30210, and a third filter 30211.
The first amplifier 3011, the phase shifter 3012, the second amplifier 3013, the attenuator 3014, and the power divider 3015 are connected in this order.
The K-band tile-type frequency converter chain 302, the first filter 3021, the third amplifier 3022, the second filter 3023, the fourth amplifier 3024, the mixer 3025, the if band-pass filter 3027, the first if amplifier 3028, the delay 3029, the second if amplifier 30210, and the third filter 3011 are connected in this order.
The local oscillator amplifier 3026 is connected to the mixer 3025.
The embodiment of the application also provides a signal processing method of the K-band extensible tile type subarray, which comprises the steps of amplifying, carrying out radiation phase control and synthesis on radio frequency signals through the K-band multi-channel tile type assembly 100, and outputting first signals; filtering, amplifying, mixing and delaying the first signal through a K-band tile type frequency converter 200 and then outputting a second signal; and inputting a second signal output by the K-band tile type frequency converter into a system for ADC sampling, and converting the sub-array analog signal into a digital signal.
Illustratively, a K-band-expandable tile-type sub-array outputs a signal collected by a sub-array digital phased-array antenna 1011 through a first radio frequency interface 102 as a first signal; inputting the first signal into the K-band tile frequency converter 200 through the second rf interface 202; outputting a first signal input into the K-band tile-type frequency converter 200 as a second signal through the intermediate frequency interface 204; and inputting the second signal output by the intermediate frequency interface 204 into the system for ADC sampling, and converting the subarray analog signal into a digital signal.
The tile-type sub-array comprises four tile-type components and a tile-type frequency converter. Each component integrates 16 radio frequency front end channels and 16-in-one power divider to form a 4 x 4 component with 16 channels. In order to reduce the section height, the channel end of the 16-channel tile type assembly is connected with an antenna in a pin-out mode, and the other surface of the assembly is vertically connected with an internal circuit of the assembly through a connector of a fuzz button SMP and a low-frequency connector with elasticity. In the whole 8 multiplied by 8 channel area, a four-in-one radio frequency combiner, a radio frequency link, a local oscillator link and an intermediate frequency link are integrated, and a tile type frequency converter is formed by radio frequency, local oscillator, intermediate frequency and power supply control interfaces; the radio frequency interface, the local oscillator interface and the intermediate frequency interface are vertically connected with a circuit by adopting a fuzzy button SMP; and the power supply control interfaces are vertically connected with the circuit by adopting elastic low-frequency connectors. The four tile type assemblies and the tile type frequency converter are fixed through screws to form an extensible and digital tile type sub-array.
For example, referring to fig. 5, the tile type component includes 16 channels, and after the radio frequency signal of each channel is received by the antenna probe, enters the component for low noise amplification, amplitude and phase modulation, is synthesized by the sixteen-in-one power divider of the component, and is finally output through the radio frequency SMP port on the back side. In order to ensure that the section height of the tile type assembly is the lowest, the three-layer stacking mode is adopted for realizing, the radio frequency and power supply control are integrally designed, 16 feed pins are arranged on the front side of the tile type assembly, and an SMP and a power supply control interface are arranged on the back side of the tile type assembly. In order to ensure the vertical connection of the radio frequency and the power supply control and the assembly, the radio frequency adopts an SMP (symmetric multi-processing) fuzz button form, and the power supply control adopts a multi-needle elastic low-frequency connector form. The size of the whole assembly is 29.6mm multiplied by 7mm; the size of the whole tile type frequency converter is 59.2mm multiplied by 8mm. The radio frequency signal enters the internal circuit of the frequency converter through four radio frequency interfaces of the tile type frequency converter, and is output after filtering, amplifying, filtering, mixing, intermediate frequency filtering, amplifying, delaying, amplifying and filtering. The external local oscillation signal enters the frequency mixer after passing through an internal circuit of the frequency converter through amplification. Radio frequency and power supply control adopt an integrated design, one part of power supply control signals provided by the system is distributed to four components, and the other part of the power supply control signals is distributed to each device in the frequency converter.
Illustratively, the K-band scalable tile sub-array is designed according to an 8 × 8 array, and the K-band scalable tile sub-array has scalability of an array scale, and can perform integer-multiple scaling according to the 8 × 8 array scale, such as a 16 × 64 array scale.
The K-band extensible tile-type sub-array can be applied to a digital phased array antenna system and can also be applied to an analog phased array antenna system.
The embodiment of the application further provides a phased array antenna, which comprises any one of the K frequency band extensible tile-type sub-arrays in the embodiment, and has the beneficial effects of the K frequency band extensible tile-type sub-array.
The embodiment of the application also provides a satellite system, at least one of which comprises the phased array antenna, and the satellite system has the beneficial effects of the phased array antenna.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. A K-band extensible tile-type subarray comprises a K-band tile-type frequency converter (100) and a plurality of K-band multi-channel tile-type components (200);
a first side face of each K-band multi-channel tile type component (200) is provided with a sub-array digital phased-array antenna (1011), and a second side face is provided with a first radio frequency interface (102) and a first power supply control interface (103); the K-band tile type frequency converter (100) is provided with a plurality of second radio frequency interfaces (202) and a plurality of second power supply control interfaces (203);
the K-band multichannel tiled component (200) is connected with the K-band tiled frequency converter (100) through a first radio frequency interface (102) and a second radio frequency interface (202), and a first power supply control interface (103) is connected with a second power supply control interface (203); the first radio frequency interface (102) adopts SMP male heads and the second radio frequency interface (202) adopting SMP female heads to be oppositely inserted; the first power supply control interface (103) and the second power supply control interface (203) are connected as low-frequency connectors with elasticity.
2. The K-band scalable tile subarray of claim 1, wherein the K-band multi-channel tile assembly (100) comprises a first housing (101), a digital phased array antenna (1011), a first radio frequency interface (102), and a first power control interface (103);
a sub-array digital phased array antenna (1011) disposed on a first side of the first housing (101); the first radio frequency interface (102) is arranged on the second side face of the first shell (101); the first power supply control interface (103) is arranged on the second side face of the first shell (101);
the first side surface of the first shell (101) is opposite to the second side surface of the first shell (101), and the sub-array digital phased-array antenna (1011) is connected with the first radio frequency interface (102).
3. The tile-type subarray according to claim 2, wherein the K-band tile-type frequency converter comprises a second housing (201), a second radio frequency interface (202), a second power control interface (203), an intermediate frequency interface (204), a third power control interface (205), and a local oscillator interface (206);
a second radio frequency interface (202) is arranged at the first side of the second shell; the number of the second radio frequency interfaces is multiple;
the second power supply control interface (203) is arranged on the first side face of the second shell (201); the number of the second power supply control interfaces (203) is multiple;
the intermediate frequency interface (204) is arranged on the second side face of the second shell (201);
the third power supply control interface (205) is arranged on the second side face of the second shell (201); the third power supply control interface (205) can be connected with an external power supply and supplies power to the K-band tile type frequency converter;
the local oscillator interface (206) is arranged on the second side face of the second shell (201); the local oscillator interface (206) is used for being connected with an external local oscillator;
the first side surface of the second shell (201) is opposite to the second side surface of the second shell (201), and a second radio frequency interface (202) of the K-band tile type frequency converter is connected with an intermediate frequency interface (204); and the second power supply control interface (203) is connected with the third power supply control interface (205) and supplies power for the plurality of K-band multi-channel tile-type components.
4. The K-band extensible tile type subarray according to claim 3, wherein a second side surface of the first housing (101) is provided with a fixing hole (104), a first side surface of the second housing (201) is provided with a mounting hole (207) correspondingly matched with the fixing hole (104), and the K-band multichannel tile type assembly (100) and the K-band tile type frequency converter (200) are assembled through the fixing hole and the mounting hole (207);
the fixing hole (104) and the mounting hole (207) limit the connection of the first radio frequency interface (102) and the second radio frequency interface (202).
5. The tile-type subarray expandable in the K-band of claim 1, wherein the digital phased array antennas (1011) of the subarray are arranged in an N x M array, N and M being positive integers.
6. The tile-type sub-array with expandable K frequency bands according to claim 1, wherein the link of the tile-type sub-array comprises N x M K frequency band multi-channel tile-type component links (301) and K frequency band tile-type frequency converter links (302);
the K-band multichannel tile type component link (301) comprises a first amplifier (3011), a phase shifter (3012), a second amplifier (3013), an attenuator (3014) and a power divider (3015);
the K-band tiled frequency converter link comprises a first filter (3021), a third amplifier (3022), a second filter (3023), a fourth amplifier (3024), a mixer (3025), a local oscillator amplifier (3026), an intermediate frequency band-pass filter (3027), a first intermediate frequency amplifier (3028), a delay (3029), a second intermediate frequency amplifier (30210), and a third filter (30211);
the first amplifier (3011), the phase shifter (3012), the second amplifier (3013), the attenuator (3014) and the power divider (3015) are connected in sequence;
a K-band tiled frequency converter link (302), a first filter (3021), a third amplifier (3022), a second filter (3023), a fourth amplifier (3024), a mixer (3025), an intermediate frequency band-pass filter (3027), a first intermediate frequency amplifier (3028), a delay unit (3029), a second intermediate frequency amplifier (30210), and a third filter (3011) are sequentially connected; the local oscillator amplifier (3026) is connected to the mixer (3025).
7. A signal processing method of a K-band extensible tile type subarray is characterized by comprising the following steps:
amplifying, controlling and synthesizing a radio frequency signal through a K-band multi-channel tile-type assembly (100) and outputting a first signal; filtering, amplifying, mixing and delaying the first signal through a K-band tile type frequency converter (200) and then outputting a second signal;
and inputting the second signal output by the K-band tile type frequency converter (200) into a system for ADC sampling, and converting the sub-array analog signal into a digital signal.
8. The signal processing method according to claim 7, wherein the K-band scalable tile-type sub-array outputs the signal collected by the sub-array digital phased-array antenna (1011) as a first signal through the first radio frequency interface (102); inputting the first signal into a K-band tile-type frequency converter (200) through a second radio frequency interface (202); outputting a first signal input into the K-band tile type frequency converter (200) into a second signal through an intermediate frequency interface (204); and inputting a second signal output by the intermediate frequency interface (204) into a system for ADC sampling, and converting the subarray analog signal into a digital signal.
9. A phased array antenna comprising the K-band scalable tile sub-array of any of claims 1 to 6.
10. A satellite system, at least one of which comprises the phased array antenna of claim 9.
CN202210641170.2A 2022-06-08 2022-06-08 K-frequency-band extensible tile-type sub-array, phased-array antenna and satellite system Pending CN115173081A (en)

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