CN113890560B - Radio frequency assembly, phased array antenna, and phased array antenna device - Google Patents

Radio frequency assembly, phased array antenna, and phased array antenna device Download PDF

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Publication number
CN113890560B
CN113890560B CN202111079906.3A CN202111079906A CN113890560B CN 113890560 B CN113890560 B CN 113890560B CN 202111079906 A CN202111079906 A CN 202111079906A CN 113890560 B CN113890560 B CN 113890560B
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low
band
receiving
frequency
transmitting
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CN113890560A (en
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梅立荣
孙柏昶
郭志昆
石柳
周玉琪
康瑞洋
李弋鹏
杨竟松
王洪坤
闫晓燊
赵强
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CETC 54 Research Institute
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CETC 54 Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/401—Circuits for selecting or indicating operating mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)

Abstract

The invention provides a radio frequency assembly, a phased array antenna and a phased array antenna device. The radio frequency assembly includes: in each receiving and transmitting channel, a first end of a frequency duplexer is connected with a first end of a low-section receiving/transmitting unit, a second end of the frequency duplexer is connected with a first end of a high-section receiving/transmitting unit, and a third end of the frequency duplexer is used for inputting or outputting radio-frequency signals; the second end of the low-band receiving/transmitting unit is connected with the first end of the transmitting high/low-band selection switch, and the third end of the low-band receiving/transmitting unit is connected with the first end of the receiving high/low-band selection switch; and the second end of the high-band receiving/transmitting unit is connected with the second end of the transmitting high/low-band selection switch, and the third end of the high-band receiving/transmitting unit is connected with the second end of the receiving high/low-band selection switch. The radio frequency component is beneficial to forming a communication antenna with high gain, interference resistance and strong interception resistance, thereby improving the communication distance and the communication capacity of a wireless networking communication system.

Description

Radio frequency assembly, phased array antenna, and phased array antenna device
Technical Field
The invention relates to the technical field of wireless communication, in particular to a radio frequency assembly, a phased array antenna and a phased array antenna device.
Background
With the development of science and the progress of society, wireless networks gradually enter various fields of social life and work, and various wireless networks provide great convenience for life, work and travel of people, industrial monitoring, detection and the like.
However, in the existing wireless networking communication system, an omnidirectional antenna is usually used to complete the transmission and reception of electromagnetic waves, and has the advantages that signals can be received in each direction, but has the disadvantages of low antenna gain, interference resistance and poor interception resistance; the communication distance and the communication capacity of the wireless networking communication system are strictly limited, and the popularization and the application of the wireless networking communication system are also limited.
In order to increase the communication distance and the communication capacity of the wireless networking communication system, a communication antenna with high gain, interference resistance and interception resistance is needed. However, such devices are lacking in the prior art.
Disclosure of Invention
The embodiment of the invention provides a radio frequency assembly, a phased array antenna and a phased array antenna device, and aims to solve the problem that the communication distance and the communication capacity of a wireless networking communication system are limited due to the existing antenna.
In a first aspect, an embodiment of the present invention provides a radio frequency component, including: k paths of transceiving channels, wherein K is a positive integer;
each path of transceiving channel comprises: a frequency duplexer, a low-band receiving/transmitting unit, a high-band receiving/transmitting unit, a transmitting high/low-band selection switch and a receiving high/low-band selection switch;
the first end of the frequency duplexer is connected with the first end of the low-section receiving/transmitting unit, the second end of the frequency duplexer is connected with the first end of the high-section receiving/transmitting unit, and the third end of the frequency duplexer is used for inputting or outputting radio-frequency signals; the frequency duplexer is used for selecting the first end of the frequency duplexer or the second end of the frequency duplexer to output according to the frequency of the radio-frequency signal input from the third end of the frequency duplexer;
the second end of the low-band receiving/transmitting unit is connected with the first end of the transmitting high/low-band selection switch, and the third end of the low-band receiving/transmitting unit is connected with the first end of the receiving high/low-band selection switch; the low-section receiving/transmitting unit is used for receiving a radio frequency signal with low-section frequency and processing the radio frequency signal with the low-section frequency to obtain a receiving intermediate frequency signal; or the receiving module is used for receiving the intermediate frequency signal to be transmitted and processing the intermediate frequency signal to be transmitted to obtain a radio frequency signal with low section frequency to be transmitted;
the second end of the high-band receiving/transmitting unit is connected with the second end of the transmitting high-band/low-band selection switch, and the third end of the high-band receiving/transmitting unit is connected with the second end of the receiving high-band/low-band selection switch; the high-section receiving/transmitting unit is used for receiving the radio-frequency signal of high-section frequency and processing the radio-frequency signal of high-section frequency to obtain a receiving intermediate-frequency signal; or the receiving module is used for receiving the intermediate frequency signal to be transmitted and processing the intermediate frequency signal to be transmitted to obtain a radio frequency signal with high-section frequency to be transmitted;
the third end of the transmitting high/low frequency band selection switch is used for inputting the intermediate frequency signal to be transmitted; the transmitting high/low band selection switch is used for selecting the intermediate frequency signal to be transmitted out through the low band receiving/transmitting unit or the high band receiving/transmitting unit;
the third end of the receiving high/low band selection switch is used for outputting the receiving intermediate frequency signal; and the receiving high/low band selection switch is used for selecting and receiving the receiving intermediate frequency signal obtained by the low band receiving/transmitting unit or the high band receiving/transmitting unit.
In one possible implementation, the low-segment receiving/transmitting unit includes: a low-band receiving/transmitting subunit and a low-band up/down conversion subunit;
a first end of the low-section receiving/transmitting subunit is connected with a first end of the frequency duplexer, and a second end of the low-section receiving/transmitting subunit is connected with a first end of the low-section up/down conversion subunit; the low-band receiving/transmitting subunit is used for carrying out amplitude limiting and low-noise amplification on the radio-frequency signal with the low-band frequency; or the up-conversion processing unit is used for performing power amplification on the intermediate frequency signal to be transmitted after up-conversion processing to obtain a radio frequency signal with low-section frequency to be transmitted;
a second end of the low-band up/down conversion subunit is connected with a first end of the transmitting high/low-band selection switch, and a third end of the low-band up/down conversion subunit is connected with a first end of the receiving high/low-band selection switch; the fourth end is used for inputting a first transmitting/receiving local oscillation signal; the low-section up/down conversion subunit is used for performing down conversion processing on the radio-frequency signal subjected to amplitude limiting and low-noise amplification according to the first transmitting/receiving local oscillator signal to obtain the receiving intermediate-frequency signal; or the up-conversion processing unit is used for carrying out up-conversion processing on the intermediate frequency signal to be transmitted according to the first transmitting/receiving local oscillator signal;
the high-section receiving/transmitting unit includes: a high-section receiving/transmitting subunit and a high-section up/down conversion subunit;
the first end of the high-section receiving/transmitting subunit is connected with the second end of the frequency duplexer, and the second end of the high-section receiving/transmitting subunit is connected with the first end of the high-section up/down conversion subunit; the high-band receiving/transmitting subunit is used for carrying out amplitude limiting and low-noise amplification on the radio-frequency signal with the high-band frequency; or the up-conversion processing module is used for performing power amplification on the intermediate-frequency signal to be transmitted after up-conversion processing to obtain a radio-frequency signal with high-section frequency to be transmitted;
a second end of the high-band up/down conversion subunit is connected with a second end of the transmitting high-band/low-band selection switch, and a third end of the high-band up/down conversion subunit is connected with a second end of the receiving high-band/low-band selection switch; the fourth end is used for inputting a second transmitting/receiving local oscillator signal; the high-band up/down conversion subunit is configured to perform down conversion processing on the radio-frequency signal subjected to amplitude limiting and low-noise amplification according to the second transmit/receive local oscillator signal to obtain the received intermediate-frequency signal; or the up-conversion processing is carried out on the intermediate frequency signal to be transmitted according to the second transmitting/receiving local oscillator signal.
In one possible implementation, the low-segment receiving/transmitting subunit includes: the low-band-pass filter, the first radio frequency transceiving switch, the low-band amplitude limiter, the low-band low-noise amplifier, the second radio frequency transceiving switch and the low-band radio frequency power amplifier;
the first end of the low-band-pass filter is used as the first end of the low-band receiving/transmitting subunit, and the second end of the low-band-pass filter is connected with the first end of the first radio frequency receiving/transmitting change-over switch;
a second end of the first radio frequency transceiving diverter switch is connected with a first end of the low-section amplitude limiter, and a third end of the first radio frequency transceiving diverter switch is connected with a first end of the low-section radio frequency power amplifier;
the second end of the low-stage amplitude limiter is connected with the first end of the low-stage low-noise amplifier;
the second end of the low-section low-noise amplifier is connected with the first end of the second radio frequency transceiving diverter switch;
and a second end of the second radio frequency transceiving switcher is connected with a second end of the low-section radio frequency power amplifier, and a third end of the second radio frequency transceiving switcher is used as a second end of the low-section transceiving subunit.
In one possible implementation, the high-segment receiving/transmitting subunit includes: gao Duandai pass filter, third RF transmit-receive switch, high Duan Xianfu device, high-stage low noise amplifier, fourth RF transmit-receive switch and high-stage RF power amplifier;
the Gao Duandai pass filter has a first end serving as a first end of the high-band transceiver subunit, and a second end connected to the first end of the third rf transceiving switch;
a second end of the third radio frequency transmit-receive switch is connected with a first end of the high Duan Xianfu device, and a third end of the third radio frequency transmit-receive switch is connected with a first end of the high-section radio frequency power amplifier;
the second end of the high Duan Xianfu device is connected with the first end of the high-section low noise amplifier;
the second end of the high-section low-noise amplifier is connected with the first end of the fourth radio frequency transceiving diverter switch;
and a second end of the fourth radio frequency transceiving diverter switch is connected with a second end of the high-section radio frequency power amplifier, and a third end of the fourth radio frequency transceiving diverter switch is used as a second end of the high-section transceiving subunit.
In one possible implementation, the low-band up/down conversion subunit includes: the device comprises a first mixer, a first intermediate frequency transceiving switcher, a first intermediate frequency amplitude limiter, an intermediate frequency low-stage low-noise amplifier and an intermediate frequency low-stage power amplifier;
a first end of the first mixer is used as a first end of the low-section up/down conversion subunit, a second end of the first mixer is used as a fourth end of the low-section up/down conversion subunit, and a third end of the first mixer is connected with a first end of the first intermediate frequency transceiving diverter switch;
a second end of the first intermediate frequency transceiving diverter switch is connected with a first end of the first intermediate frequency amplitude limiter, and a third end of the first intermediate frequency transceiving diverter switch is connected with a first end of the intermediate frequency low-stage power amplifier;
the second end of the first intermediate frequency amplitude limiter is connected with the first end of the intermediate frequency low-stage low-noise amplifier;
a second end of the intermediate-frequency low-band low-noise amplifier is used as a third end of the low-band up/down conversion subunit;
and the second end of the intermediate-frequency low-section power amplifier is used as the second end of the low-section up/down conversion subunit.
In one possible implementation, the high-band up/down conversion subunit includes: the second mixer, the second intermediate frequency transceiving switcher, the second intermediate frequency amplitude limiter, the intermediate frequency high-section low noise amplifier and the intermediate frequency high Duan Gonglv amplifier;
the first end of the second mixer is used as the first end of the high-section up/down conversion subunit, the second end of the second mixer is used as the fourth end of the high-section up/down conversion subunit, and the third end of the second mixer is connected with the first end of the second intermediate frequency transceiving diverter switch;
a second end of the second intermediate frequency transceiving switcher is connected with a first end of the second intermediate frequency amplitude limiter, and a third end of the second intermediate frequency transceiving switcher is connected with a first end of the intermediate frequency high-stage power amplifier;
a second end of the second intermediate frequency amplitude limiter is connected with a first end of the intermediate frequency high-section low noise amplifier;
a second end of the intermediate-frequency high-band low-noise amplifier is used as a third end of the high-band up/down conversion subunit;
and the second end of the intermediate frequency high Duan Gonglv amplifier is used as the second end of the high-section up/down conversion subunit.
In one possible implementation, each transceiving channel further includes: a receiving intermediate frequency band-pass filter and a transmitting intermediate frequency band-pass filter;
the first end of the receiving intermediate-frequency band-pass filter is connected with the third end of the receiving high/low-frequency band selection switch, and the second end of the receiving intermediate-frequency band-pass filter is used for outputting a signal obtained by performing intermediate-frequency band-pass filtering on the receiving intermediate-frequency signal;
and the first end of the transmitting intermediate-frequency band-pass filter is connected with the third end of the transmitting high/low-frequency band selection switch, and the second end of the transmitting intermediate-frequency band-pass filter is used for inputting the intermediate-frequency signal to be transmitted.
In a second aspect, an embodiment of the present invention provides a phased array antenna, including an antenna array formed by the radio frequency components as described in the first aspect or any one of the possible implementations of the first aspect.
In one possible implementation, the antenna array includes N antenna sub-arrays, where N is a positive integer;
each antenna sub-array surface comprises M antenna sub-modules, M calibration coupling power dividing networks and M radio frequency components; m is a positive integer;
the antenna sub-modules, the calibration coupled power division networks and the radio frequency components correspond to one another, one end of each of K through ports in each calibration coupled power division network is connected with the antenna sub-modules, and the other end of each of the K through ports in each calibration coupled power division network is connected with the first end of each of the frequency duplexers of each of the transceiving channels in the radio frequency components in a one-to-one correspondence manner;
each antenna submodule comprises K antenna subarrays;
each antenna subarray comprises P antenna units and a one-division-P power divider; p is a positive integer;
each antenna unit is connected with the branch ports of the one-to-P power divider in a one-to-one correspondence manner, and the junction port of the one-to-P power divider is connected with one end of one through port in the calibration coupling power dividing network.
In a third aspect, an embodiment of the present invention provides a phased array antenna apparatus, including the phased array antenna and the communication terminal described in the second aspect or any one of the possible implementations of the second aspect;
the phased array antenna is connected with the communication terminal;
the phased array antenna is used for receiving and processing radio frequency signals from the space and sending the processed radio frequency signals to the communication terminal; or the communication terminal is used for processing the signal to be transmitted from the communication terminal and transmitting the processed signal to be transmitted;
the communication terminal is used for receiving and demodulating the processed radio frequency signal; or for generating the signal to be transmitted.
The embodiment of the invention provides a radio frequency assembly, a phased array antenna and a phased array antenna device, wherein the radio frequency assembly comprises K receiving and transmitting channels, and each receiving and transmitting channel comprises: a frequency duplexer, a low-band receiving/transmitting unit, a high-band receiving/transmitting unit, a transmitting high/low-band selection switch and a receiving high/low-band selection switch; the first end of the frequency duplexer is connected with the first end of the low-section receiving/transmitting unit, the second end of the frequency duplexer is connected with the first end of the high-section receiving/transmitting unit, and the third end of the frequency duplexer is used for inputting or outputting radio-frequency signals; the second end of the low-band receiving/transmitting unit is connected with the first end of the transmitting high/low-band selection switch, and the third end of the low-band receiving/transmitting unit is connected with the first end of the receiving high/low-band selection switch; the second end of the high-band receiving/transmitting unit is connected with the second end of the transmitting high-band/low-band selection switch, and the third end of the high-band receiving/transmitting unit is connected with the second end of the receiving high-band/low-band selection switch; a high/low frequency band selection switch is transmitted, and the third end is used for inputting an intermediate frequency signal to be transmitted; the receiving high/low band selector switch is used for outputting receiving intermediate frequency signals at the third end. The receiving device can receive a radio frequency signal of low-band frequency or a radio frequency signal of high-band frequency through the frequency duplexer when receiving the signal, obtain a receiving intermediate frequency signal by processing the low-band receiving/transmitting unit when receiving the radio frequency signal of the low-band frequency, receive and selectively receive the receiving intermediate frequency signal obtained by processing the low-band receiving/transmitting unit through the high-band receiving/transmitting unit and output the receiving intermediate frequency signal when receiving the radio frequency signal of the high-band frequency, obtain the receiving intermediate frequency signal by processing the high-band receiving/transmitting unit and selectively receive and output the receiving intermediate frequency signal obtained by processing the high-band receiving/transmitting unit through the high-band receiving/transmitting unit; when transmitting signals, the high/low band selection switch selects to transmit the intermediate frequency signals to be transmitted out through the low band receiving/transmitting unit or the high band receiving/transmitting unit. Therefore, the radio frequency component can be switched among a frequency division duplex mode of low-section transmission and high-section reception, a frequency division duplex mode of high-section transmission and low-section reception, a time division duplex mode of low-section transmission and low-section reception or a time division duplex mode of high-section transmission and high-section reception, and a communication antenna with high gain, interference resistance and interception resistance is formed, so that the communication distance and the communication capacity of the wireless networking communication system are improved.
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 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 invention, 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 radio frequency module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of each transceiving channel in the rf component according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a radio frequency module including eight transceiving channels according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a radio frequency module including eight transceiving channels according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a structure of an antenna array provided by an embodiment of the present invention;
fig. 6 is a schematic diagram of a structure of an antenna sub-array provided in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an antenna sub-module provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an antenna subarray provided in an embodiment of the present invention;
figure 9 is a connection diagram of digital multi-beam forming signal processing for an antenna array according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a phased array antenna apparatus according to an embodiment of the present invention.
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 invention. It will be apparent, however, to one skilled in the art that the present invention 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 invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
In a wireless networking communication system, frequency Division Duplex (FDD) and Time Division Duplex (TDD) networking methods are commonly used. The TDD networking mode can better utilize spectrum resources because uplink and downlink are on the same frequency band, is easier to arrange, and has better flexibility, but the TDD networking mode requires a switch to switch between transceiving, resulting in limited system communication throughput, large communication delay, and limited use in some scenarios requiring large capacity and low delay. The FDD networking mode has stronger data transmission capability, large system throughput and small communication time delay because the uplink and the downlink are carried out simultaneously in different frequency bands; however, the FDD networking mode is not as flexible as the TDD mode, has higher requirements on spectrum resources, and is limited to be used in a scene with a tight spectrum resource requirement.
In the existing TDD mode networking communication system, an omnidirectional antenna is usually used to complete transmission and reception of electromagnetic waves, and has the advantages that signals can be received in each direction, but has the disadvantages of low antenna gain, interference resistance and poor interception resistance; the communication distance and the communication capacity of the networking communication system are strictly limited, and the popularization and the application of the networking communication system are also limited.
In order to solve the above problem, an embodiment of the present invention provides a radio frequency assembly. Fig. 1 is a schematic structural diagram of a radio frequency assembly according to an embodiment of the present invention. As shown in fig. 1, the rf assembly 5 may include K transceiver channels 52. Wherein K is a positive integer.
Each transceiving channel 52 may comprise: a frequency diplexer 14, a low band receive/transmit unit 53, a high band receive/transmit unit 54, a transmit high/low band select switch 27, and a receive high/low band select switch 42.
The first end of the frequency duplexer 14 is connected to the first end of the low-band transceiving unit 53, the second end is connected to the first end of the high-band transceiving unit 54, and the third end is used for inputting or outputting a radio frequency signal; the frequency duplexer 14 is configured to select the first end of the frequency duplexer or the second end of the frequency duplexer to output according to the frequency of the radio frequency signal input from the third end of the frequency duplexer.
A low band transmitting/receiving unit 53 having a second terminal connected to the first terminal of the transmitting high/low band selection switch 27 and a third terminal connected to the first terminal of the receiving high/low band selection switch 42; the low-band receiving/transmitting unit 53 is configured to receive a radio frequency signal of a low-band frequency, and process the radio frequency signal of the low-band frequency to obtain a received intermediate frequency signal; or the receiving module is used for receiving the intermediate frequency signal to be transmitted and processing the intermediate frequency signal to be transmitted to obtain the radio frequency signal with the low-section frequency to be transmitted.
A high band transmitting/receiving unit 54 having a second terminal connected to the second terminal of the transmitting high/low band selection switch 27 and a third terminal connected to the second terminal of the receiving high/low band selection switch 42; the high-band receiving/transmitting unit 54 is configured to receive a radio frequency signal of a high-band frequency, and process the radio frequency signal of the high-band frequency to obtain a received intermediate frequency signal; or the receiving module is used for receiving the intermediate frequency signal to be transmitted and processing the intermediate frequency signal to be transmitted to obtain the radio frequency signal with high-section frequency to be transmitted.
A transmitting high/low band selection switch 27, a third end for inputting an intermediate frequency signal to be transmitted; the transmission high/low band selection switch 27 is used to select the intermediate frequency signal to be transmitted through the low band receiving/transmitting unit or the high band receiving/transmitting unit.
A receive high/low band selector switch 42, the third terminal for outputting a receive intermediate frequency signal; the receive high/low band select switch 42 is used to select the receive intermediate frequency signal processed by the receive low band transmit/receive unit or the receive high band transmit/receive unit.
The radio frequency component of the embodiment of the invention can receive the radio frequency signal of low-band frequency or the radio frequency signal of high-band frequency through the frequency duplexer when receiving the signal, process the radio frequency signal of low-band frequency through the low-band receiving/transmitting unit to obtain the received intermediate frequency signal when receiving the radio frequency signal of low-band frequency, and select the received intermediate frequency signal obtained by the low-band receiving/transmitting unit through the high/low band receiving selection switch and output the received intermediate frequency signal. When receiving the radio frequency signal of the high-band frequency, the high-band receiving/transmitting unit processes the radio frequency signal to obtain a receiving intermediate frequency signal, and the receiving high-band/low-band selection switch selects and receives the receiving intermediate frequency signal obtained by the high-band receiving/transmitting unit and outputs the receiving intermediate frequency signal. When transmitting signals, the high/low band selection switch selects to transmit the intermediate frequency signals to be transmitted out through the low band receiving/transmitting unit or the high band receiving/transmitting unit. Therefore, the radio frequency component can be switched among a frequency division duplex mode of low-section transmission and high-section reception, a frequency division duplex mode of high-section transmission and low-section reception, a time division duplex mode of low-section transmission and low-section reception or a time division duplex mode of high-section transmission and high-section reception, and a communication antenna with high gain, interference resistance and interception resistance is formed, so that the communication distance and the communication capacity of the wireless networking communication system are improved.
Optionally, the low-stage receiving/transmitting unit 53 may include: a low band transmit/receive subunit 55 and a low band up/down converter subunit 56.
Wherein, the low-band transceiver subunit 55 has a first end connected to the first end of the frequency duplexer 14, and a second end connected to the first end of the low-band up/down converter subunit 56; the low band receiving/transmitting subunit 55 is configured to perform amplitude limiting and low noise amplification on the radio frequency signal at the low band frequency; or the up-conversion processing module is used for performing power amplification on the intermediate frequency signal to be transmitted after up-conversion processing to obtain a radio frequency signal with low section frequency to be transmitted.
A low band up/down converter sub-unit 56 having a second terminal connected to the first terminal of the transmit high/low band selection switch 27 and a third terminal connected to the first terminal of the receive high/low band selection switch 42; the fourth end is used for inputting a first transmitting/receiving local oscillation signal; the low-band up/down conversion subunit 56 is configured to perform down conversion processing on the amplitude-limited and low-noise amplified radio frequency signal according to the first transmit/receive local oscillator signal to obtain a receive intermediate frequency signal; or the up-conversion processing is carried out on the intermediate frequency signal to be transmitted according to the first transmitting/receiving local oscillation signal.
Alternatively, referring to fig. 2, the low segment receiving/transmitting subunit 55 may include: a low-band-pass filter 15, a first radio frequency transmit-receive switch 16, a low-band amplitude limiter 18, a low-band low-noise amplifier 19, a second radio frequency transmit-receive switch 20 and a low-band radio frequency power amplifier 17.
The low band pass filter 15 has a first end as a first end of the low band transmit/receive subunit 55, and a second end connected to the first end of the first rf transmit/receive switch 16.
A second terminal of the first rf transceiving switch 16 is connected to a first terminal of the low-band limiter 18, and a third terminal thereof is connected to a first terminal of the low-band rf power amplifier 17.
And a second terminal of the low band limiter 18 is connected to a first terminal of a low band low noise amplifier 19.
And a second terminal of the low-band low-noise amplifier 19 is connected to a first terminal of a second rf transceiving switch 20.
A second terminal of the second rf transceiving switch 20 is connected to the second terminal of the low-band rf power amplifier 17, and a third terminal thereof is used as the second terminal of the low-band transceiving subunit 55.
Alternatively, referring to fig. 2, the low-band up/down conversion subunit 56 may include: a first mixer 21, a first intermediate frequency transceiving switcher 23, a first intermediate frequency limiter 24, an intermediate frequency low-band low-noise amplifier 25, and an intermediate frequency low-band power amplifier 26.
The first end of the first mixer 21 is used as the first end of the low-band up/down conversion subunit 56, the second end is used as the fourth end of the low-band up/down conversion subunit 56, and the third end is connected to the first end of the first intermediate frequency transceiving switch 23.
A second terminal of the first intermediate frequency transceiving switch 23 is connected to a first terminal of the first intermediate frequency limiter 24, and a third terminal thereof is connected to a first terminal of the intermediate frequency low-band power amplifier 26.
A first if limiter 24, the second terminal of which is connected to a first terminal of an if low band lna 25.
And a second terminal of the intermediate frequency low band low noise amplifier 25 is used as a third terminal of the low band up/down converter 56.
And a second terminal of the intermediate frequency low band power amplifier 26 is a second terminal of the low band up/down conversion subunit 56.
Optionally, the high-band transceiver unit 54 may include: a high-band transmit/receive subunit 57 and a high-band up/down conversion subunit 58.
Wherein, the first end of the high-band transceiver subunit 57 is connected to the second end of the frequency duplexer 14, and the second end is connected to the first end of the high-band up/down converter subunit 58; the high-band receiving/transmitting subunit 57 is configured to perform amplitude limiting and low-noise amplification on the radio-frequency signal with the high-band frequency; or the up-conversion processing unit is used for performing power amplification on the intermediate frequency signal to be transmitted after up-conversion processing to obtain a radio frequency signal with high-section frequency to be transmitted.
A high band up/down converter 58 having a second terminal connected to the second terminal of the transmit high/low band selection switch 27 and a third terminal connected to the second terminal of the receive high/low band selection switch 42; the fourth end is used for inputting a second transmitting/receiving local oscillation signal; the high-band up/down conversion subunit 58 is configured to perform down conversion processing on the amplitude-limited and low-noise amplified radio frequency signal according to the second transmit/receive local oscillator signal to obtain a receive intermediate frequency signal; or the up-conversion processing is carried out on the intermediate frequency signal to be transmitted according to the second transmitting/receiving local oscillation signal.
Alternatively, referring to fig. 2, the high-band transceiving subunit 57 may include: gao Duandai pass filter 30, third rf transmit/receive switch 31, high Duan Xianfu, high stage low noise amplifier 34, fourth rf transmit/receive switch 35, and high stage rf power amplifier 32.
The high band pass filter 30 has a first end as a first end of the high band transmit/receive subunit 57, and a second end connected to the first end of the third rf transmit/receive switch 31.
The second terminal of the third rf transmit/receive switch 31 is connected to the first terminal of the high Duan Xianfu device 33, and the third terminal is connected to the first terminal of the high-band rf power amplifier 32.
And a high Duan Xianfu device 33, the second end of which is connected to the first end of the high stage low noise amplifier 34.
And a second terminal of the high-band low-noise amplifier 34 is connected to a first terminal of a fourth rf transceiving switch 35.
A second terminal of the fourth rf transceiving switch 35 is connected to the second terminal of the high-band rf power amplifier 32, and a third terminal thereof is used as the second terminal of the high-band transceiver unit 57.
Alternatively, referring to fig. 2, the high-band up/down conversion subunit 58 may include: a second mixer 36, a second intermediate frequency transmit-receive switch 38, a second intermediate frequency limiter 39, an intermediate frequency high-band low noise amplifier 40, and an intermediate frequency high Duan Gonglv amplifier 41.
The first end of the second mixer 36 is used as the first end of the high-band up/down conversion subunit 58, the second end is used as the fourth end of the high-band up/down conversion subunit 58, and the third end is connected to the first end of the second intermediate frequency transceiving switch 38.
The second intermediate frequency transceiving switch 38 has a second terminal connected to the first terminal of the second intermediate frequency limiter 39, and a third terminal connected to the first terminal of the intermediate frequency high Duan Gonglv amplifier 41.
And a second intermediate frequency limiter 39 having a second terminal connected to a first terminal of an intermediate frequency high band low noise amplifier 40.
And a second terminal of the intermediate frequency high band low noise amplifier 40 is used as a third terminal of the high band up/down converter 58.
An intermediate frequency high Duan Gonglv amplifier 41 with a second terminal as the second terminal of the high band up/down converter 58.
In this embodiment, the low band-pass filter 15 and the high band-pass filter 30 may be used to suppress out-of-band interference. The low-band limiter 18, the first intermediate frequency limiter 24, the high Duan Xianfu and the second intermediate frequency limiter 39 can be used for preventing elements at a signal receiving end from being burnt by large signals in the operation process of the radio frequency assembly, and reducing amplitude limitation. The low band low noise amplifier 19, the intermediate frequency low band low noise amplifier 25, the high band low noise amplifier 34, and the intermediate frequency high band low noise amplifier 40 may be used to amplify the received weak signal and reduce noise interference. The mid-frequency low band power amplifier 26, the low band rf power amplifier 17, the mid-frequency high band Duan Gonglv amplifier 41 and the high band rf power amplifier 32 may be used for power amplification to adjust the range of the rf components. The first frequency mixer 21 and the second frequency mixer 36 are respectively connected to the local oscillator through the second end, and perform up-conversion processing on the intermediate frequency signal to be transmitted through the local oscillator signal to move to the radio frequency band, or perform down-conversion processing on the radio frequency signal through the local oscillator signal to move to the intermediate frequency. Optionally, the low-band up/down conversion subunit and the high-band up/down conversion subunit of each transceiving channel of each radio frequency component may reserve the fourth terminal to be connected to an external local oscillator, or reserve the fourth terminal to be connected to local oscillators disposed in the low-band up/down conversion subunit and the high-band up/down conversion subunit, and are configured to input the first transmit/receive local oscillator signal or the second transmit/receive local oscillator signal.
Optionally, referring to fig. 2, each transceiver channel 52 of the radio frequency assembly 5 may further include: a reception if band-pass filter 43 and a transmission if band-pass filter 28.
Wherein, the first end of the receiving intermediate frequency band-pass filter 43 is connected with the third end of the receiving high/low frequency band selection switch 42, and the second end is used for outputting the signal after the intermediate frequency band-pass filtering processing is performed on the receiving intermediate frequency signal; and a transmitting intermediate frequency band pass filter 28 having a first end connected to a third end of the transmitting high/low band selection switch 27 and a second end for inputting an intermediate frequency signal to be transmitted.
In this embodiment, when the radio frequency signal is of a low-band frequency, the radio frequency signal enters the low-band bandpass filter 15 for filtering, and then is sent to the first radio frequency transceiving switch 16, the first radio frequency transceiving switch 16 is used to select whether the low-band is in a transmitting or receiving working state, when the receiving working state is in the receiving working state, the first radio frequency transceiving switch 16 is connected to the low-band limiter 18, the low-band limiter 18 is connected to the low-band low-noise amplifier 19, the low-band low-noise amplifier 19 performs low-noise amplification on the received radio frequency signal, the low-noise amplified signal enters the second radio frequency transceiving switch 20, the low-noise amplified signal enters the first mixer 21 after being selected by the second radio frequency transceiving switch 20, the first mixer 21 performs down-conversion processing on the signal, the local oscillator signal can be provided to the first mixer 21 by the local oscillator 22, the down-converted signal enters the first intermediate frequency transceiving switch 23, the down-converted signal enters the first intermediate frequency limiter 24 and the intermediate frequency low-band low-noise amplifier 25 after being switched by the first intermediate frequency transceiving switch 23, the intermediate frequency band-pass filter 25 performs low-noise amplification processing on the low-band-pass filter (for example, the low-band-pass filter 43 and the low-band-pass filter 42 can perform sampling processing on the low-pass signal after being selected by the low-band-pass filter). In a transmitting working state, an intermediate frequency signal to be transmitted (for example, the intermediate frequency signal to be transmitted may be an intermediate frequency signal from a DA channel 29 of the intermediate frequency sampling processing module) enters the transmitting intermediate frequency band-pass filter 28, the signal is transmitted to the transmitting high/low frequency band selection switch 27 after being processed by the transmitting intermediate frequency band-pass filter 28, the signal enters the intermediate frequency low-band power amplifier 26 after being selected by the transmitting high/low frequency band selection switch 27 to be amplified and then transmitted to the first intermediate frequency transceiving switch 23 to be transceiving switching selected, the signal enters the first mixer 21 after being selected by the first intermediate frequency transceiving switch 23, the signal is up-converted by the first mixer 21, a local oscillator signal can be provided to the first mixer 21 by the local oscillator 22, the up-converted radio frequency signal enters the second radio frequency transceiving switch 20, the up-converted radio frequency signal is transmitted to the low-band-pass filter 15 after being selected by the second radio frequency transceiving switch 20 to be power amplified by the low-band-pass power amplifier 17, the amplified signal is transmitted to the third duplexer 14 after being filtered by the low band-pass filter 15. Illustratively, the signal output from the third terminal through the frequency duplexer 14 can be sent to the calibration coupler and the antenna at the back end for transmission.
When the radio frequency signal is in high band frequency, the radio frequency signal enters the high band pass filter 30 for filtering processing, and then is sent to the third radio frequency transmit-receive switch 31, the third radio frequency transmit-receive switch 31 is used for selecting whether the high frequency band is in a transmitting or receiving working state, when the receiving working state is in the receiving working state, the third radio frequency transmit-receive switch 31 is connected with the high Duan Xianfu device 33, the high Duan Xianfu device is connected with the high band low noise amplifier 34, the high band low noise amplifier 34 performs low noise amplification on the received signal, the amplified signal enters the fourth radio frequency transmit-receive switch 35, enters the second mixer 36 after being selected by the fourth radio frequency transmit-receive switch 35, and the second mixer 36 performs down conversion processing on the signal, the local oscillator 37 can provide a local oscillator signal for the second mixer 36, the down-converted signal enters the second intermediate frequency transceiving switch 38, the down-converted signal enters the second intermediate frequency limiter 39 and the intermediate frequency high-band low-noise amplifier 40 after being switched by the second intermediate frequency transceiving switch 38, the intermediate frequency high-band low-noise amplifier 40 performs intermediate frequency low-noise amplification on the signal, the amplified signal of the intermediate frequency high-band low-noise amplifier 40 enters the receiving high/low frequency band selection switch 42, the amplified signal enters the receiving intermediate frequency band-pass filter 43 after being selected by the receiving high/low frequency band selection switch 42, and the received intermediate frequency band-pass filter 43 can output the signal after performing filter processing on the signal (similarly, the signal can be sent to the AD sampling channel 44 of the intermediate frequency sampling processing module at the rear end for sampling and digitization processing). In a transmitting working state, an intermediate frequency signal to be transmitted (the intermediate frequency signal to be transmitted may also be an intermediate frequency signal from the DA channel 29 of the intermediate frequency sampling processing module) enters the transmitting intermediate frequency band-pass filter 28, is processed by the transmitting intermediate frequency band-pass filter 28, and then is sent to the transmitting high/low frequency band selection switch 27, and after being selected by the transmitting high/low frequency band selection switch 27, enters the intermediate frequency high Duan Gonglv amplifier 41 for signal amplification, and then is sent to the second intermediate frequency transceiving selection switch 38 for transceiving switching selection, and after being selected by the second intermediate frequency transceiving selection switch 38, the signal enters the second mixer 36, the second mixer 36 performs up-conversion processing on the signal, and can provide a local oscillator signal for the second mixer 36 through the local oscillator 37, the up-converted local oscillator signal enters the fourth radio frequency transceiving selection switch 35, and then is sent to the high-band radio frequency power amplifier 32 for power amplification, and after being selected by the third radio frequency transceiving selection switch 31, the up-band-pass filter 30 performs filtering processing on the local oscillator signal, and then is sent to the three-terminal duplexer 14. Similarly, the signal output from the third terminal of the frequency duplexer 14 can be sent to the calibration coupler and the antenna at the back end to complete transmission.
That is to say, the radio frequency component of this embodiment can switch between four operating modes, i.e., high-band transmission high-band reception, low-band transmission low-band reception, high-band transmission low-band reception, and low-band reception high-band transmission, i.e., the radio frequency component of this embodiment can switch between an FDD mode of high-band transmission low-band reception or high-band reception low-band transmission, and can also switch between a TDD mode of high-band transmission high-band reception or low-band transmission low-band reception.
When the radio frequency module of this embodiment operates in the FDD mode of high-band transmission and low-band reception, the signal transmission procedure is as follows: 28 → 27 → 41 → 38 → 36 → 35 → 32 → 31 → 30 → 14; the signal receiving process comprises the following steps: 14 → 15 → 16 → 18 → 19 → 20 → 21 → 23 → 24 → 25 → 42 → 43. When the radio frequency module of this embodiment works in the FDD mode of high-band reception and low-band transmission, the signal transmission process is as follows: 28 → 27 → 26 → 23 → 21 → 20 → 17 → 16 → 15 → 14; the signal receiving process comprises the following steps: 14 → 30 → 31 → 33 → 34 → 35 → 36 → 38 → 39 → 40 → 42 → 43.
When the radio frequency module of this embodiment operates in the TDD mode of high-band transmission and high-band reception, the signal transmission process is as follows: 28 → 27 → 41 → 38 → 36 → 35 → 32 → 31 → 30 → 14; the signal receiving process comprises the following steps: 14 → 30 → 31 → 33 → 34 → 35 → 36 → 38 → 39 → 40 → 42 → 43. When the radio frequency module of this embodiment operates in the TDD mode of low-band transmission and low-band reception, the signal transmission process is as follows: 28 → 27 → 26 → 23 → 21 → 20 → 17 → 16 → 15 → 14; the signal receiving process comprises the following steps: 14 → 15 → 16 → 18 → 19 → 20 → 21 → 23 → 24 → 25 → 42 → 43.
For example, referring to fig. 3 and 4, the radio frequency component may be a radio frequency component including eight transceiving channels, and the radio frequency component including the eight transceiving channels may include eight SMP interfaces connected to an antenna (i.e., the third terminal of the frequency duplexer of each transceiving channel), eight transmission intermediate frequency SMP interfaces connected to a transmission intermediate frequency signal (i.e., the third terminal of the transmission high/low band selector switch of each transceiving channel), and eight reception intermediate frequency SMP interfaces connected to a reception intermediate frequency signal (i.e., the third terminal of the reception high/low band selector switch of each transceiving channel). The eight transmitting intermediate frequency SMP interfaces and the eight receiving intermediate frequency SMP interfaces are connected with the intermediate frequency interface of the intermediate frequency acquisition processing module through SMP butting connectors. The radio frequency assembly comprising the eight transceiving channels may further comprise two local oscillation signal SMP interfaces connected with local oscillations and a power supply and control interface J70AHL. One path of the first transmit/receive local oscillator signal 46 input from the outside is distributed to the fourth end of the low-stage up/down conversion subunit of each transmit/receive channel through an eight-branch power divider 47, and a local oscillator signal one required by frequency conversion is provided for each transmit/receive channel. Another path of second transmit/receive local oscillator signals 48 input from the outside may be distributed to the fourth end of the high-stage up/down conversion subunit of each transmit/receive channel through an eight-branch power divider 49, so as to provide the local oscillator signal two required for frequency conversion for each channel. Through the power supply and control interface J70AHL of the rf component, the power supply and control signal 50 can distribute the power supply and control signal to the power supply and control signal interface 45 of each transceiver channel through an one-to-eight distribution network 51, thereby completing power supply and control of the active circuit in each transceiver channel. In this embodiment, the number of the transceiving channels in the radio frequency assembly may be set according to requirements of heat dissipation, power supply and power consumption, and this embodiment only provides an example of a radio frequency assembly including K transceiving channels, which is not limited thereto.
The embodiment of the invention can adopt a micro-assembly integration design process to integrate a high-isolation frequency duplexer, a one-K power divider corresponding to a first transmitting/receiving local oscillator signal, a one-K power divider corresponding to a second transmitting/receiving local oscillator signal, a one-K distribution network corresponding to power supply and control signals, and low-section receiving/transmitting units, high-section receiving/transmitting units, transmitting high/low-section selection switches, receiving high/low-section selection switches and the like of K receiving and transmitting channels into one module, and the integration level is high. And each receiving and transmitting channel comprises a frequency duplexer, a low-band receiving/transmitting unit, a high-band receiving/transmitting unit, a transmitting high/low-band selection switch and a receiving high/low-band selection switch, so that the radio frequency components can be switched among a frequency division duplex mode of transmitting high-band reception at a low band, a frequency division duplex mode of transmitting low-band reception at a high band, a time division duplex mode of transmitting low-band reception at a low band or a time division duplex mode of transmitting high-band reception at a high band, a communication antenna formed by the radio frequency components of the embodiment of the invention has the capability of flexibly selecting communication spectrum resources and networking modes according to the interference change of a complex electromagnetic environment, and the design of realizing space high-power synthesis by using the low-power radio frequency components of the embodiment of the invention has small realization difficulty, and is favorable for forming a communication antenna with high gain, interference resistance and strong interception resistance capability, thereby improving the communication distance and communication capacity of a wireless networking communication system and expanding the application range of the networking communication system.
As another embodiment of the present invention, the present invention further provides a phased array antenna, including an antenna array 1 formed by the radio frequency components 5 described in any of the above embodiments. And has the same beneficial effects as the radio frequency assembly described in any of the above embodiments.
Optionally, referring to fig. 5 and 6, the antenna array includes N antenna sub-arrays 13, and each antenna sub-array includes M antenna sub-modules 2, M calibration coupled power dividing networks 4, and M radio frequency components 5. Wherein N and M are positive integers.
The antenna submodule 2, the calibration coupling power division networks 4 and the radio frequency components 5 correspond to each other one by one, one end of K through ports in each calibration coupling power division network 4 is connected with the antenna submodule 2, and the other end of K through ports in each calibration coupling power division network 4 is connected with the first end of the frequency duplexer 14 of each receiving and transmitting channel in the radio frequency component 5 in a one-to-one correspondence manner.
Referring to fig. 7 and 8, each antenna sub-module 2 includes K antenna sub-arrays 3; each antenna subarray 3 comprises P antenna units and a one-to-P power divider; wherein P is a positive integer.
Each antenna unit is connected with the branch ports of the one-P power divider in a one-to-one correspondence manner, and the junction port of the one-P power divider is connected with one end of one through port in the calibration coupling power dividing network.
In this embodiment, the antenna array 1 is a rectangular planar antenna structure, and exemplarily, an M × N rectangular antenna sub-module 2 is disposed thereon, the antenna sub-module 2 includes eight antenna sub-arrays 3, the antenna sub-array 3 is formed by combining eight broadband antenna units through an eight-in-one power divider, and a feed port of the antenna sub-array 3 adopts an SMP interface and is located on the back of a radiation port surface of the antenna sub-array 3.
The antenna submodule 2, the calibration coupling power division network 4 comprising the eight-path coupling power divider and the radio frequency assembly 5 comprising the eight-path transceiving channel correspond to each other one by one, one ends of eight through ports of the calibration coupling power division network 4 are connected with the eight antenna submounts 3 of the antenna submodule 2 in an oppositely-inserted mode through SMP (symmetrical multi processing) oppositely-inserted connectors, and the other ends of the eight through ports of the calibration coupling power division network 4 are connected with the radio frequency interface of the radio frequency assembly 5 comprising the eight-path transceiving channel in an oppositely-inserted mode through SMP oppositely-inserted connectors.
The radio frequency assembly 5 comprising the eight receiving and transmitting channels can be mounted on a structural member of the antenna submodule 2 through the structural member, and further structurally, the radio frequency assembly 5 comprising the eight receiving and transmitting channels comprises eight SMP interfaces connected with an antenna, two local oscillator signal SMP interfaces connected with a local oscillator, eight SMP interfaces connected with a transmitting intermediate frequency signal, eight SMP interfaces connected with a receiving intermediate frequency signal and a power supply and control interface J70AHL; the intermediate frequency interface of the radio frequency component 5 comprising the eight receiving and transmitting channels is connected with the intermediate frequency interface of the intermediate frequency acquisition processing module through an SMP butt-plug connector.
Optionally, referring to fig. 6 and 9, the antenna array further includes a digital multi-beam forming processing and beam controlling module 7 connected to each antenna sub-array 13, and each antenna sub-array 13 further includes M/2 intermediate frequency acquisition processing modules 6, the digital multi-beam forming processing and beam controlling module 7, a first transmit/receive local oscillator 9, a first local oscillator power division network 10, a coupling power division network 11, a second transmit/receive local oscillator 60, and a second local oscillator power division network 61.
The coupling combining port of each calibration coupling power dividing network 4 is connected with the splitting port of the coupling power divider 11, and the combining port of the coupling power divider 11 is connected with the calibration processing branch of the last-stage digital multi-beam forming processing and beam control module 7.
The second end of the transmitting intermediate frequency band-pass filter and the second end of the receiving intermediate frequency band-pass filter of each channel of the transceiving channel in the radio frequency component 5 are both connected with the intermediate frequency interface of the intermediate frequency acquisition processing module 6.
The intermediate frequency acquisition processing module 6 is connected with the digital multi-beam forming processing and beam control module 7 through optical fibers; the N digital multi-beam forming processing and beam control modules 7 of the whole antenna array surface transmit the beam forming processing data to the last stage of digital multi-beam forming processing and beam control module 7 for final multi-beam synthesis processing; the intermediate frequency sampling processing module 6 is used for realizing acquisition and processing of intermediate frequency signals and digital-to-analog conversion and emission processing of baseband signals, and controlling transmission of signal data between the intermediate frequency sampling processing module 6 and the digital multi-beam forming processing and beam control module 7. The digital multi-beam forming processing and beam control module 7 is used for completing multi-beam forming in a digital domain and realizing multi-target networking.
The output end of the clock and synchronization network 8 can be connected with the intermediate frequency acquisition processing module 6, the digital multi-beam forming processing and beam control module 7, the first transmitting/receiving local oscillator 9 and the second transmitting/receiving local oscillator 60 through a low-loss phase-stable cable assembly, and provide clocks for the two; the output end of the clock and synchronization network 8 can also be connected with the intermediate frequency acquisition processing module 6 and the digital multi-beam forming processing and beam control module 7 through low-frequency control cables and can synchronously control signals for the intermediate frequency acquisition processing module and the digital multi-beam forming processing and beam control module.
An output port of the first transmitting/receiving local oscillator 9 may be connected to a combining port of the first local oscillator power distribution network 10 through a cable assembly, and a splitting port of the first local oscillator power distribution network 10 may be connected to a local oscillator interface of the radio frequency assembly 5 through an SMP pluggable connector, so as to provide a transmitting/receiving local oscillator signal for the radio frequency assembly 5.
An output port of the second transmitting/receiving local oscillator 60 may be connected to a combining port of the second local oscillator power distribution network 61 through a cable assembly, and a splitting port of the second local oscillator power distribution network 61 is connected to a local oscillator interface of the radio frequency assembly 5 through an SMP pluggable connector, so as to provide a transmitting/receiving local oscillator signal for the radio frequency assembly 5.
When receiving signals, electromagnetic wave signals from the space are received through the antenna subarray 3, the received signals are transmitted to the radio frequency component 5 at the rear end through the calibration coupling power division network 4, the radio frequency component 5 performs low-noise amplification and down-conversion on the signals through a receiving channel entering after the frequency band and system selection is performed on the signals, and intermediate frequency signals are output; the intermediate frequency signal is sent to an intermediate frequency sampling processing module 6 at the rear end for AD sampling processing, and the intermediate frequency signal is converted into a digital signal; the intermediate frequency sampling processing module 6 sends the digital signal to a digital multi-beam forming processing and beam control module 7 at the rear end to form a plurality of beams; the multiple beam digital multi-beam forming processing and beam control module 7 processes data and sends the processed data to the communication terminal 12 at the rear end for demodulation processing, thereby completing communication demodulation; the whole receiving process of the antenna array surface is the same as that of the antenna sub-array 3.
When the signal is transmitted, a plurality of pairs of modulation signals from the communication terminal 12 are subjected to digital multi-beam forming processing and beam control module 7 for digital beam forming processing, and the processed signals are sent to the intermediate frequency sampling processing module 6 for DA signal transmission processing, so that each pair of digital signals is converted into an output analog intermediate frequency signal; each analog intermediate frequency signal is sent to a TR component 5, frequency band and system selection is carried out in the TR component 5, then up-conversion is carried out, and power amplification is carried out on the signal through a transmitting channel in the TR component 5; the amplified signals are sent to the antenna subarray 3, and are transmitted to the space through the antenna subarray 3. The transmission process of the whole antenna array surface is the same as that of the antenna subarray 2.
When the phased array antenna works in an FDD mode of high-section transmission and low-section reception, the signal transmission process is as follows: 29 → 28 → 27 → 41 → 38 → 36 → 35 → 32 → 31 → 30 → 14 → 4 → 3; the signal receiving process comprises the following steps: 3 → 4 → 14 → 15 → 16 → 18 → 19 → 20 → 21 → 23 → 24 → 25 → 42 → 43 → 44; when the phased array antenna works in an FDD mode of receiving low-section transmission at a high section, the signal transmission process is as follows: 29 → 28 → 27 → 26 → 23 → 21 → 20 → 17 → 16 → 15 → 14 → 4 → 3; the signal receiving process comprises the following steps: 3 → 4 → 14 → 30 → 31 → 33 → 34 → 35 → 36 → 38 → 39 → 40 → 42 → 43 → 44.
When the phased array antenna works in a TDD mode of high-section transmission and high-section reception, the signal transmission process is as follows: 29 → 28 → 27 → 41 → 38 → 36 → 35 → 32 → 31 → 30 → 14 → 4 → 3; the signal receiving process comprises the following steps: 3 → 4 → 14 → 30 → 31 → 33 → 34 → 35 → 36 → 38 → 39 → 40 → 42 → 43 → 44. When the phased array antenna works in a TDD mode of low-section transmission and low-section reception, the signal transmission process is as follows: 29 → 28 → 27 → 26 → 23 → 21 → 20 → 17 → 16 → 15 → 14 → 4 → 3; the signal receiving process comprises the following steps: 3 → 4 → 14 → 15 → 16 → 18 → 19 → 20 → 21 → 23 → 24 → 25 → 42 → 43 → 44.
The phased array antenna provided by the embodiment of the invention adopts a large-scale planar array antenna form, the radio frequency component can be switched between a frequency division duplex mode and a time division duplex mode, the capability of flexibly selecting communication spectrum resources and a networking system according to the interference change of a complex electromagnetic environment is realized, the communication antenna with strong anti-interference and anti-interception capabilities can be obtained, one radio frequency component can correspond to a plurality of antenna units, the number of the radio frequency components in the large-scale planar array antenna can be reduced, the antenna has high-gain directional narrow beams, the communication distance and the communication capacity of a networking communication system are further improved, and the application range of the networking communication system is expanded. And the formed phased array antenna has flexible simultaneous multi-beam forming capability, beam scanning and controlling capability and flexible expansion capability.
As still another embodiment of the present invention, referring to fig. 10, the present invention further provides a phased array antenna apparatus, including the phased array antenna 1 and the communication terminal 12 described in any of the above embodiments, the phased array antenna 1 being connected to the communication terminal 12; the phased array antenna 1 is used for receiving and processing radio frequency signals from space and sending the processed radio frequency signals to the communication terminal 12; or for processing the signal to be transmitted from the communication terminal 12 and transmitting the processed signal to be transmitted; the communication terminal 12 is configured to receive and demodulate the processed radio frequency signal; or for generating a signal to be transmitted. The phased array antenna apparatus described above has the same advantageous effects as the phased array antenna described in any of the above embodiments.
In this embodiment, when receiving a signal, an electromagnetic wave signal from a space is received by the antenna subarray 3, the received signal passes through the calibration coupling power division network 4 and then is transmitted to the radio frequency component 5 at the rear end, the radio frequency component 5 performs low noise amplification and down conversion on the signal by entering a receiving channel after performing frequency band and system selection on the signal, and outputs an intermediate frequency signal; the intermediate frequency signal is sent to an intermediate frequency sampling processing module 6 at the rear end for AD sampling processing, and the intermediate frequency signal is converted into a digital signal; the intermediate frequency sampling processing module 6 sends the digital signal to a digital multi-beam forming processing and beam control module 7 at the rear end to form a plurality of beams; the multiple beam digital multi-beam forming processing and beam control module 7 processes data and sends the processed data to the communication terminal 12 at the rear end for demodulation processing, thereby completing communication demodulation; the whole receiving process of the antenna array surface is the same as that of the antenna sub-array 3.
When the signal is transmitted, a plurality of pairs of modulation signals from the communication terminal 12 are subjected to digital multi-beam forming processing and beam control module 7 for digital beam forming processing, and the processed signals are sent to the intermediate frequency sampling processing module 6 for DA signal transmission processing, so that each pair of digital signals is converted into an output analog intermediate frequency signal; each analog intermediate frequency signal is sent to a TR component 5, frequency band and system selection is carried out in the TR component 5, then up-conversion is carried out, and power amplification is carried out on the signal through a transmitting channel in the TR component 5; the amplified signals are sent to the antenna subarray 3, and are transmitted to the space through the antenna subarray 3. The whole transmitting process of the antenna array surface is the same as that of the antenna sub-array 2.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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 depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims (10)

1. A radio frequency assembly, comprising: k paths of transceiving channels, wherein K is a positive integer;
each path of transceiving channel comprises: the device comprises a frequency duplexer, a low-band receiving/transmitting unit, a high-band receiving/transmitting unit, a transmitting high/low-band selection switch and a receiving high/low-band selection switch;
the first end of the frequency duplexer is connected with the first end of the low-section receiving/transmitting unit, the second end of the frequency duplexer is connected with the first end of the high-section receiving/transmitting unit, and the third end of the frequency duplexer is used for inputting or outputting radio-frequency signals; the frequency duplexer is used for selecting the first end of the frequency duplexer or the second end of the frequency duplexer to output according to the frequency of the radio-frequency signal input from the third end of the frequency duplexer;
the second end of the low-band receiving/transmitting unit is connected with the first end of the transmitting high/low-band selection switch, and the third end of the low-band receiving/transmitting unit is connected with the first end of the receiving high/low-band selection switch; the low-section receiving/transmitting unit is used for receiving the radio frequency signal of low-section frequency and processing the radio frequency signal of low-section frequency to obtain a receiving intermediate frequency signal; or the receiving module is used for receiving the intermediate frequency signal to be transmitted and processing the intermediate frequency signal to be transmitted to obtain a radio frequency signal with low section frequency to be transmitted;
the second end of the high-band receiving/transmitting unit is connected with the second end of the transmitting high-band/low-band selection switch, and the third end of the high-band receiving/transmitting unit is connected with the second end of the receiving high-band/low-band selection switch; the high-section receiving/transmitting unit is used for receiving the radio-frequency signal of high-section frequency and processing the radio-frequency signal of high-section frequency to obtain a receiving intermediate-frequency signal; or the receiving module is used for receiving the intermediate frequency signal to be transmitted and processing the intermediate frequency signal to be transmitted to obtain a radio frequency signal with high-section frequency to be transmitted;
the third end of the transmitting high/low frequency band selection switch is used for inputting the intermediate frequency signal to be transmitted; the transmitting high/low band selection switch is used for selecting the intermediate frequency signal to be transmitted out through the low band receiving/transmitting unit or the high band receiving/transmitting unit;
the third end of the receiving high/low band selector switch is used for outputting the receiving intermediate frequency signal; and the receiving high/low band selection switch is used for selecting and receiving the receiving intermediate frequency signal obtained by the low band receiving/transmitting unit or the high band receiving/transmitting unit.
2. The radio frequency assembly of claim 1, wherein the low-section transmit/receive unit comprises: a low-band receiving/transmitting subunit and a low-band up/down conversion subunit;
a first end of the low-section receiving/transmitting subunit is connected with a first end of the frequency duplexer, and a second end of the low-section receiving/transmitting subunit is connected with a first end of the low-section up/down conversion subunit; the low-band receiving/transmitting subunit is used for carrying out amplitude limiting and low-noise amplification on the radio-frequency signal with the low-band frequency; or the up-conversion processing module is used for carrying out power amplification on the intermediate frequency signal to be transmitted after up-conversion processing to obtain a radio frequency signal with low section frequency to be transmitted;
a second end of the low-band up/down conversion subunit is connected with a first end of the transmitting high/low-band selection switch, and a third end of the low-band up/down conversion subunit is connected with a first end of the receiving high/low-band selection switch; the fourth end is used for inputting a first transmitting/receiving local oscillation signal; the low-section up/down conversion subunit is used for performing down conversion processing on the radio-frequency signal subjected to amplitude limiting and low-noise amplification according to the first transmitting/receiving local oscillator signal to obtain the receiving intermediate-frequency signal; or the up-conversion processing unit is used for carrying out up-conversion processing on the intermediate frequency signal to be transmitted according to the first transmitting/receiving local oscillator signal;
the high-section receiving/transmitting unit includes: a high-section receiving/transmitting subunit and a high-section up/down conversion subunit;
a first end of the high-band transmitting/receiving subunit is connected with a second end of the frequency duplexer, and a second end of the high-band transmitting/receiving subunit is connected with a first end of the high-band up/down conversion subunit; the high-band receiving/transmitting subunit is used for carrying out amplitude limiting and low-noise amplification on the radio-frequency signal of the high-band frequency; or the up-conversion processing module is used for performing power amplification on the intermediate-frequency signal to be transmitted after up-conversion processing to obtain a radio-frequency signal with high-section frequency to be transmitted;
a second end of the high-band up/down conversion subunit is connected with a second end of the transmitting high-band/low-band selection switch, and a third end of the high-band up/down conversion subunit is connected with a second end of the receiving high-band/low-band selection switch; the fourth end is used for inputting a second transmitting/receiving local oscillator signal; the high-section up/down conversion subunit is used for performing down conversion processing on the radio-frequency signal subjected to amplitude limiting and low-noise amplification according to the second transmitting/receiving local oscillator signal to obtain the receiving intermediate-frequency signal; or the up-conversion processing is carried out on the intermediate frequency signal to be transmitted according to the second transmitting/receiving local oscillator signal.
3. The radio frequency assembly according to claim 2, wherein the low-band transmit/receive subunit comprises: the low-band-pass filter, the first radio frequency transceiving switch, the low-band amplitude limiter, the low-band low-noise amplifier, the second radio frequency transceiving switch and the low-band radio frequency power amplifier;
the first end of the low-band-pass filter is used as the first end of the low-band receiving/transmitting subunit, and the second end of the low-band-pass filter is connected with the first end of the first radio frequency receiving/transmitting change-over switch;
a second end of the first radio frequency transceiving diverter switch is connected with a first end of the low-section amplitude limiter, and a third end of the first radio frequency transceiving diverter switch is connected with a first end of the low-section radio frequency power amplifier;
the second end of the low-stage amplitude limiter is connected with the first end of the low-stage low-noise amplifier;
the second end of the low-section low-noise amplifier is connected with the first end of the second radio frequency transceiving diverter switch;
and a second end of the second radio frequency transceiving switch is connected with a second end of the low-section radio frequency power amplifier, and a third end of the second radio frequency transceiving switch is used as a second end of the low-section transceiving subunit.
4. The radio frequency assembly according to claim 2, wherein the high-band transmit/receive subunit comprises: gao Duandai pass filter, third RF transmit-receive switch, high Duan Xianfu device, high-stage low noise amplifier, fourth RF transmit-receive switch and high-stage RF power amplifier;
the Gao Duandai pass filter has a first end serving as a first end of the high-band transceiver subunit, and a second end connected to the first end of the third rf transceiving switch;
a second end of the third radio frequency transceiving switcher is connected with the first end of the high Duan Xianfu device, and a third end of the third radio frequency transceiving switcher is connected with the first end of the high-band radio frequency power amplifier;
the second end of the high Duan Xianfu device is connected with the first end of the high-section low noise amplifier;
the second end of the high-section low-noise amplifier is connected with the first end of the fourth radio frequency transceiving diverter switch;
and a second end of the fourth radio frequency transceiving diverter switch is connected with a second end of the high-section radio frequency power amplifier, and a third end of the fourth radio frequency transceiving diverter switch is used as a second end of the high-section transceiving subunit.
5. The radio frequency component of claim 2, wherein the low-band up/down conversion subunit comprises: the first mixer, the first intermediate frequency receiving and transmitting selector switch, the first intermediate frequency amplitude limiter, the intermediate frequency low-stage low-noise amplifier and the intermediate frequency low-stage power amplifier;
a first end of the first mixer is used as a first end of the low-stage up/down conversion subunit, a second end of the first mixer is used as a fourth end of the low-stage up/down conversion subunit, and a third end of the first mixer is connected with a first end of the first intermediate frequency transceiving diverter switch;
a second end of the first intermediate frequency transceiving switcher is connected with a first end of the first intermediate frequency amplitude limiter, and a third end of the first intermediate frequency transceiving switcher is connected with a first end of the intermediate frequency low-stage power amplifier;
the second end of the first intermediate frequency amplitude limiter is connected with the first end of the intermediate frequency low-stage low-noise amplifier;
a second end of the intermediate-frequency low-band low-noise amplifier is used as a third end of the low-band up/down conversion subunit;
and the second end of the intermediate-frequency low-section power amplifier is used as the second end of the low-section up/down conversion subunit.
6. The radio frequency component of claim 2, wherein the high-band up/down conversion subunit comprises: the second mixer, the second intermediate frequency transceiving switcher, the second intermediate frequency amplitude limiter, the intermediate frequency high-section low noise amplifier and the intermediate frequency high Duan Gonglv amplifier;
the first end of the second mixer is used as the first end of the high-section up/down conversion subunit, the second end of the second mixer is used as the fourth end of the high-section up/down conversion subunit, and the third end of the second mixer is connected with the first end of the second intermediate frequency transceiving diverter switch;
a second end of the second intermediate frequency transceiving switcher is connected with a first end of the second intermediate frequency amplitude limiter, and a third end of the second intermediate frequency transceiving switcher is connected with a first end of the intermediate frequency high-stage power amplifier;
the second end of the second intermediate frequency amplitude limiter is connected with the first end of the intermediate frequency high-section low noise amplifier;
a second end of the intermediate-frequency high-band low-noise amplifier is used as a third end of the high-band up/down conversion subunit;
and the second end of the intermediate frequency high Duan Gonglv amplifier is used as the second end of the high-section up/down conversion subunit.
7. The radio frequency assembly of any one of claims 1-6, wherein each transceiving channel further comprises: a receiving intermediate frequency band-pass filter and a transmitting intermediate frequency band-pass filter;
the first end of the receiving intermediate-frequency band-pass filter is connected with the third end of the receiving high/low-frequency band selection switch, and the second end of the receiving intermediate-frequency band-pass filter is used for outputting a signal obtained by performing intermediate-frequency band-pass filtering on the receiving intermediate-frequency signal;
and the first end of the transmitting intermediate-frequency band-pass filter is connected with the third end of the transmitting high/low-frequency band selection switch, and the second end of the transmitting intermediate-frequency band-pass filter is used for inputting the intermediate-frequency signal to be transmitted.
8. A phased array antenna comprising an antenna array, said antenna array comprising a radio frequency assembly as claimed in any one of claims 1 to 7.
9. The phased array antenna of claim 8, wherein the antenna array comprises N antenna sub-arrays, N being a positive integer;
each antenna sub-array surface comprises M antenna sub-modules, M calibration coupling power dividing networks and M radio frequency components; m is a positive integer;
the antenna sub-modules, the calibration coupled power division networks and the radio frequency components correspond to one another, one end of each of K through ports in each calibration coupled power division network is connected with the antenna sub-modules, and the other end of each of the K through ports in each calibration coupled power division network is connected with the third end of the frequency duplexer of each transceiving channel in the radio frequency components in a one-to-one correspondence manner;
each antenna submodule comprises K antenna subarrays;
each antenna subarray comprises P antenna units and a one-division-P power divider; p is a positive integer;
each antenna unit is connected with the branch ports of the one-to-one P power divider in a one-to-one correspondence manner, and the junction port of the one-to-one P power divider is connected with one end of one through port in the calibration coupled power divider network.
10. A phased array antenna arrangement, characterized by comprising a phased array antenna according to claim 8 or 9 and a communication terminal;
the phased array antenna is connected with the communication terminal;
the phased array antenna is used for receiving and processing radio frequency signals from the space and sending the processed radio frequency signals to the communication terminal; or the signal processing module is used for processing the signal to be transmitted from the communication terminal and transmitting the processed signal to be transmitted;
the communication terminal is used for receiving and demodulating the processed radio frequency signal; or for generating the signal to be transmitted.
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