CN-121984559-A - Phased array antenna device for dual-beam millimeter wave satellite communication and communication system

CN121984559ACN 121984559 ACN121984559 ACN 121984559ACN-121984559-A

Abstract

The invention discloses a phased array antenna device for dual-beam millimeter wave satellite communication and a communication system, wherein the device comprises a dual-beam transmitting module, a dual-beam receiving module, a frequency conversion module, a positioning and attitude determination module, an antenna control module and a structural component, and the system comprises a dual-mode satellite modulation and demodulation module, a baseband processing and routing module and a user terminal interface module. The phased array antenna adopts an electronic scanning system, solves the problems of low tracking speed and great improvement on the reliability of the phased array antenna of the traditional mechanical phased array antenna, simultaneously adopts a dual-beam design, can be simultaneously connected into two satellite networks, has real-time switching between the two satellite networks, realizes uninterrupted satellite communication, and greatly improves the communication reliability.

Inventors

WANG GUODONG
XIAO FANGHAN
WU ZHAOBING
ZHAO ZIZHI
CHEN HUAPENG

Assignees

深圳市飞思通信技术有限公司

Dates

Publication Date: 20260505
Application Date: 20251208

Claims (10)

1. The phased array antenna device for the dual-beam millimeter wave satellite communication is characterized by comprising a dual-beam transmitting module, a dual-beam receiving module, a frequency conversion module, a positioning and attitude-determining module, an antenna control module and a structural component; The dual-beam transmitting module and the dual-beam receiving module are respectively connected to the transmitting chip set and the receiving chip set by adopting dual-polarized antenna unit arrays with common caliber design and are used for simultaneously forming two independent transmitting beams and two independent receiving beams in space; The frequency conversion module is connected with the dual-beam transmitting module and the dual-beam receiving module and is used for simultaneously processing up-conversion, filtering and power amplification from the intermediate frequency signals of the two paths of transmitting links to the radio frequency signals, and down-conversion, filtering and low-noise amplification from the radio frequency signals of the two paths of receiving links to the intermediate frequency signals; the positioning and attitude determining module is used for acquiring the geographic position and attitude information of the equipment in real time; The antenna control module is respectively connected with the frequency conversion module, the positioning and attitude determination module and the chip set of the dual-beam transmitting/receiving module, and is used for receiving external ephemeris and beacon information and information of the positioning and attitude determination module, executing a satellite tracking algorithm, and outputting control signals to the transmitting chip set and the receiving chip set so as to realize amplitude-phase control and real-time pointing of two independent beams.
2. The dual-beam millimeter wave satellite communication phased array antenna apparatus of claim 1, wherein the phased array antenna apparatus workflow comprises: the transmitting flow is that two paths of intermediate frequency signals sent by the dual-mode satellite modulation and demodulation module are fed into the dual-beam transmitting module after being up-converted and amplified by the frequency conversion module, and then radiated to a satellite to finish the transmitting process; And the receiving process is that the dual-beam receiving module receives radio frequency signals from two satellites simultaneously, the receiving chip group performs amplitude-phase control and amplification, then the frequency conversion module down-converts the radio frequency signals into two paths of intermediate frequency signals, the intermediate frequency signals are sent to the dual-mode satellite modulation and demodulation module, the intermediate frequency signals are processed into baseband signals and demodulation is completed, and the demodulated data are sent to the user terminal to complete the receiving process.
3. The dual-beam millimeter wave satellite communication phased array antenna apparatus according to claim 1, wherein the common aperture design is specifically that two orthogonal polarization feed ports of the dual-polarization antenna unit are respectively connected to an active channel of a transmitting chipset and an active channel of a receiving chipset, and a dual-beam dual-circular polarization working mode is realized by controlling the amplitude and phase of the active channels; transmitting common caliber design, namely two paths of power synthesized network signals entering a dual-beam transmitting module are amplified and then amplitude-modulated and amplified by a transmitting chip set, and then radiated out through an array surface; The receiving common caliber design is that the phased array antenna device outputs two wave beam signals after receiving two paths of input radio frequency signals in different directions and amplifying the signals through two paths of power synthesis networks and the signals respectively after receiving the amplitude modulation amplification of a chip group.
4. The dual-beam millimeter wave satellite communication phased array antenna apparatus of claim 1, wherein the positioning and attitude determination module comprises a GNSS antenna and an inertial navigation unit, the geographic location information comprises longitude and latitude heights, and the attitude information comprises azimuth, elevation and roll angles.
5. The dual-beam millimeter wave satellite communication phased array antenna device according to claim 4, wherein the satellite tracking algorithm executed by the antenna control module can calculate and control the directions of two beams in real time according to the real-time gesture and position data output by the positioning and attitude-determining module and the pre-stored satellite ephemeris, so as to realize automatic tracking and seamless switching between two satellites.
6. The dual-beam millimeter wave satellite communication phased array antenna apparatus of claim 1, wherein the transmit chipset and the receive chipset each comprise a plurality of active channels integrated with digital phase shifters and attenuators for independent amplitude and phase control of each antenna element signal.
7. The dual-beam millimeter wave satellite communication phased array antenna apparatus of claim 1, wherein the phased array antenna apparatus is applied to an on-board, on-board or on-board mobile platform, supporting simultaneous access to two high-orbit satellites, two low-orbit satellites or a high-orbit and low-orbit satellite network.
8. A dual-beam millimeter wave satellite communication phased array antenna communication system employing a phased array antenna apparatus as claimed in any one of claims 1 to 7, comprising: the dual-mode satellite modulation and demodulation module is connected with the frequency conversion module of the phased array antenna device and is used for simultaneously processing two paths of communication links corresponding to two satellites to complete modulation and demodulation between baseband signals and intermediate frequency signals; The baseband processing and routing module is connected with the dual-mode satellite modulation and demodulation module and is used for encoding and decoding, packaging, routing and protocol conversion of user data; And the user terminal interface module is used for connecting various user equipment, converging user data and sending the user data to the baseband processing and routing module, and distributing the received satellite data to the corresponding user equipment.
9. The dual-beam millimeter wave satellite communication phased array antenna communication system of claim 8, wherein the dual-mode satellite modem module supports two different satellite communication standards or frequency bands, can be configured to simultaneously access a high-orbit and a low-orbit, a dual-high-orbit or a dual-low-orbit satellite network, and dynamically allocate bandwidths and service types of two links according to communication requirements.
10. The dual-beam millimeter wave satellite communication phased array antenna communication system of claim 8, further comprising a network management module, wherein the network management module is respectively connected with the antenna control module, the dual-mode satellite modem module and the baseband processing and routing module of the phased array antenna device; the network management module is used for monitoring the communication state of the whole system, the link quality of the satellites and the working parameters of each module, and executing system configuration, fault diagnosis, safety management and strategy control, wherein the strategy control comprises main-standby switching or load balancing between two satellites based on the link quality or service priority.

Description

Phased array antenna device for dual-beam millimeter wave satellite communication and communication system Technical Field The invention relates to the technical field of electronic information technology and satellite communication, in particular to a dual-beam millimeter wave satellite communication phased array antenna device and a communication system. Background With the rapid development of the global satellite internet, the demand for high-reliability communication is increasingly urgent at any time and any place. Ground mobile networks cannot cover areas such as oceans, deserts, remote mountainous areas, etc., while satellite communication is the best means to achieve global seamless coverage. The stationary orbit (GEO) satellite has wide coverage range but larger transmission delay, and the low orbit (LEO) satellite network has the advantages of low delay and high bandwidth, but requires constellation networking. At present, the antenna technology for realizing mobile satellite communication mainly comprises a parabolic antenna, a flat array antenna and a phased array antenna. The parabolic antenna has the advantages of strong signal receiving capability, low manufacturing cost ratio and high cost performance, and has the defects of mushroom shape, inconvenient disassembly and assembly, large wind resistance, mechanical device adjustment during direction alignment, low tracking speed, difficulty in meeting the requirement of a high maneuvering platform, small size, light weight, small wind resistance, convenient installation and use of a flat array antenna, but the antenna alignment direction also needs mechanical device adjustment, and the phased array antenna has natural advantages in the field of in-motion communication due to the electric scanning characteristic, supports multi-star connection, and has the advantages of quick star cutting, light weight, low profile and the like, thus being the first choice of in-motion communication equipment of a moving object. Meanwhile, the installation space of mobile platforms such as vehicle-mounted, airborne, shipborne and the like is extremely limited, and the severe requirements on the size, weight and section height of the antenna are set. Therefore, there is a strong need in the industry for a satellite communications antenna apparatus and system that can simultaneously track two satellites, has a fast response speed, and is compact and miniaturized to support the complex communications demands of the future high dynamic platforms "one-to-many". Disclosure of Invention (One) solving the technical problems Aiming at the defects of the prior art, the invention adopts a double-beam and common-caliber scheme to form two independent transmitting beams and receiving beams in space so as to realize uninterrupted satellite communication. (II) technical scheme The phased array antenna device for the dual-beam millimeter wave satellite communication comprises a dual-beam transmitting module, a dual-beam receiving module, a frequency conversion module, a positioning and attitude-determining module, an antenna control module and a structural component; The dual-beam transmitting module and the dual-beam receiving module are respectively connected to the transmitting chip set and the receiving chip set by adopting dual-polarized antenna unit arrays with common caliber design and are used for simultaneously forming two independent transmitting beams and two independent receiving beams in space; The frequency conversion module is connected with the dual-beam transmitting module and the dual-beam receiving module and is used for simultaneously processing up-conversion, filtering and power amplification from the intermediate frequency signals of the two paths of transmitting links to the radio frequency signals, and down-conversion, filtering and low-noise amplification from the radio frequency signals of the two paths of receiving links to the intermediate frequency signals; The positioning and attitude determining module is used for acquiring the geographic position and attitude information of the equipment in real time; The antenna control module is respectively connected with the frequency conversion module, the positioning and attitude determination module and the chip set of the dual-beam transmitting/receiving module and is used for receiving external ephemeris and beacon information and information of the positioning and attitude determination module, executing a satellite tracking algorithm and outputting control signals to the transmitting chip set and the receiving chip set so as to realize amplitude-phase control and real-time pointing of two independent beams. Preferably, the phased array antenna apparatus workflow comprises: The transmitting process is that the two paths of intermediate frequency signals sent by the dual-mode satellite modulation and demodulation module are fed into the dual-beam transmitting module after being up-converted and amplifie