CN214099928U - Satellite communication multi-beam antenna - Google Patents
Satellite communication multi-beam antenna Download PDFInfo
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- CN214099928U CN214099928U CN202120312669.XU CN202120312669U CN214099928U CN 214099928 U CN214099928 U CN 214099928U CN 202120312669 U CN202120312669 U CN 202120312669U CN 214099928 U CN214099928 U CN 214099928U
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Abstract
The utility model discloses a satellite communication multi-beam antenna, which comprises a plurality of antenna units and a plurality of multi-channel amplitude-phase modulation amplification units; four input ends of the multi-channel amplitude-phase modulation amplification unit are connected to the antenna unit; each multi-channel amplitude and phase modulation amplifying unit outputs four beams. The satellite communication multi-beam antenna comprises a plurality of channels, signals are subjected to power division and combination in a multi-channel amplitude-phase modulation amplification unit, each channel can receive external millimeter wave signals, independent amplitude modulation, phase modulation and amplification of each channel are realized, the functions of division and combination and multi-channel amplitude modulation and phase modulation and amplification are integrated, the types and the number of chips in the phased array antenna are reduced, and the design of an external circuit is greatly simplified.
Description
Technical Field
The utility model belongs to the technical field of microwave millimeter wave communication, concretely relates to satellite communication multi-beam antenna.
Background
Since the 'star chain' plan is developed by Mask in America, low-orbit satellites are gradually deployed around the earth, a satellite communication system gradually moves to the visual field of people, the national strategic requirements are used as traction, a high-low orbit satellite network is proposed and deployed according to the thought of 'space-based networking, space-ground interconnection and global service', a space-based information network is built and is cooperatively connected with a ground internet and a mobile communication network, the global coverage, random access, on-demand service and safe and reliable high-low orbit satellite information network are finally realized, and the era of satellite communication is about to be fully started.
However, in the environment of satellite communication channels, channel resources are precious and very limited, and with the development of low-orbit satellite broadband communication network applications and the increase of data transmission capacity requirements, efficient and reasonable utilization of the channel resources is a key problem to be solved. The multi-beam antenna technology can enable the beam space to be isolated to achieve multiple frequency reuse, can increase the available bandwidth and the channel capacity, realizes simultaneous tracking of multiple targets, and effectively improves system resources and performance. And the multi-beam phased array antenna realizes beam agility through electric scanning, improves reliability through distributed power amplifiers, reduces feed loss through the preposition of a Low Noise Amplifier (LNA) and a Power Amplifier (PA), reduces caliber size and weight through array face multiplexing, and meets the requirements of low profile, light weight and integration more easily, so that the multi-beam fringe phased array has great advantages.
The satellite communication multi-beam antenna architecture can realize satellite carrying in civil use due to the fact that the antenna architecture has small size and low profile. When the satellite runs in a low orbit, the phased array antenna and a base station installed on the ground or a building are in high-speed communication, and a satellite internet is built. In the military field, tracking of multiple targets and accurate striking thereof can be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving present active phase control antenna's essential characteristics and not enough, especially traditional simulation radio frequency beam forms the framework and adopts Printed Circuit Board (PCB) structure more, nevertheless because the restriction of PCB's the technology of punching, its problem that can only form the dual beam at the highest has provided a satellite communication multi-beam antenna.
The technical scheme of the utility model is that: a satellite communication multi-beam antenna comprises a plurality of antenna units and a plurality of multi-channel amplitude-phase modulation amplification units;
four input ends of the multi-channel amplitude-phase modulation amplification unit are connected to the antenna unit; each multi-channel amplitude and phase modulation amplifying unit outputs four beams.
Furthermore, each multi-channel amplitude and phase modulation amplification unit has the same structure and comprises a four-channel branch signal module, a first feed network, a second feed network, a third feed network and a fourth feed network;
the input end of each channel branch signal module is connected with an antenna unit; the first output end of each channel branch signal module is used as the input end of a first feed network, and the second output end of each channel branch signal module is used as the input end of a second feed network; the third output end of each channel branch signal module is used as the input end of a third feed network, and the fourth output end of each channel branch signal module is used as the input end of a fourth feed network; the first feed network, the second feed network, the third feed network and the fourth feed network output four beams.
Furthermore, the four-channel branch signal modules have the same structure and respectively comprise two LNAs and four small signal branches;
the input end of each LNA is connected to an antenna unit; two paths of output ends of the two LNAs are in one-to-one corresponding communication connection with input ends of the four small signal branches respectively; the output ends of the four small signal branches are respectively used as the input end of the first feed network, the input end of the second feed network, the input end of the third feed network and the input end of the fourth feed network.
Furthermore, each small signal branch has the same structure and comprises a phase shifter and a VGA;
the output end of the LNA is in communication connection with the input end of the phase shifter; the output end of the phase shifter is in communication connection with the input end of the VGA; the output end of each VGA is used as the input end of the feed network.
The utility model has the advantages that: the satellite communication multi-beam antenna comprises a plurality of channels, signals are subjected to power division and combination in a multi-channel amplitude-phase modulation amplification unit, each channel can receive external millimeter wave signals, independent amplitude modulation, phase modulation and amplification of each channel are realized, the functions of division and combination and multi-channel amplitude modulation and phase modulation and amplification are integrated, the types and the number of chips in the phased array antenna are reduced, and the design of an external circuit is greatly simplified. Satellite embarkation can be achieved on civilian use because of its small volume and low profile. When the satellite runs in a low orbit, the phased array antenna and a base station installed on the ground or a building are in high-speed communication, and a satellite internet is built. In the military field, tracking of multiple targets and accurate striking thereof can be realized.
Drawings
Fig. 1 is a block diagram of a satellite communication multi-beam antenna.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a satellite communication multi-beam antenna, which comprises a plurality of antenna units and a plurality of multi-channel amplitude-phase modulation amplifying units;
four input ends of the multi-channel amplitude-phase modulation amplification unit are connected to the antenna unit; each multi-channel amplitude and phase modulation amplifying unit outputs four beams.
In the embodiment of the present invention, as shown in fig. 1, each multi-channel amplitude-phase modulation amplifying unit has the same structure, and includes a four-channel branch signal module, a first feeding network, a second feeding network, a third feeding network, and a fourth feeding network;
the input end of each channel branch signal module is connected with an antenna unit; the first output end of each channel branch signal module is used as the input end of a first feed network, and the second output end of each channel branch signal module is used as the input end of a second feed network; the third output end of each channel branch signal module is used as the input end of a third feed network, and the fourth output end of each channel branch signal module is used as the input end of a fourth feed network; the first feed network, the second feed network, the third feed network and the fourth feed network output four beams.
In the embodiment of the present invention, as shown in fig. 1, the four-channel branch signal modules have the same structure, and each of the four-channel branch signal modules includes two LNAs and four small signal branches;
the input end of each LNA is connected to an antenna unit; two paths of output ends of the two LNAs are in one-to-one corresponding communication connection with input ends of the four small signal branches respectively; the output ends of the four small signal branches are respectively used as the input end of the first feed network, the input end of the second feed network, the input end of the third feed network and the input end of the fourth feed network.
In the embodiment of the present invention, as shown in fig. 1, each small signal branch has the same structure and includes a phase shifter and a VGA;
the output end of the LNA is in communication connection with the input end of the phase shifter; the output end of the phase shifter is in communication connection with the input end of the VGA; the output end of each VGA is used as the input end of the feed network.
In the embodiment of the utility model, as shown in fig. 1, represent a unit in each dotted line frame in the figure, this multichannel amplitude and phase modulation amplifying unit is integrated to a unit with the microwave circuit of merit branch circuit and a plurality of passageway, and each passageway of unit all contains amplitude modulation phase modulation unit and amplifying unit, realizes the independent amplitude modulation phase modulation of multichannel. The main working principle is that millimeter wave signals enter a multichannel amplitude-phase modulation amplification unit through an antenna, the millimeter wave signals are divided into two parts through the antenna, one part of the millimeter wave signals enters a low noise power amplifier (LNA), low noise amplification is carried out on the millimeter wave signals, and then the amplified signals are divided into two parts and respectively sent to corresponding branches. Taking the a1 signal as an example, the branch has a phase shifter and a variable gain amplifier VGA, and the phase shifter is used to adjust the phase of the signal to reach the desired phase; the variable gain amplifier VGA is arranged to modulate the amplitude of the signal to achieve a desired amplitude. The resulting signal can be maximized at the final synthesis. The rest small branches are subjected to the same process as A1 to obtain signals A1-A4, B1-B4, C1-C4 and D1-D4. The corresponding outputs are A, B, C and D, respectively, whereby four beam signals are provided in a single cell, the remaining cells likewise providing four beam signals until the nth cell produces outputs AN, BN, CN, DN, and the array of N cells forms AN independently controllable four beam.
The utility model discloses a theory of operation and process do: the internal structure of the multi-channel amplitude and phase modulation amplification unit is designed autonomously, a single multi-channel amplitude and phase modulation amplification unit comprises 8-channel input and 4-channel output, 16 channels of 8-channel input are combined in pairs and connected to four antenna units, and the output of four channels is a signal which is synthesized based on design requirements. The signal is divided and combined in the multi-channel amplitude and phase modulation amplification unit, and each channel can receive the control of an external digital signal, so that the independent amplitude modulation, phase modulation and amplification of each channel are realized.
The utility model has the advantages that: the satellite communication multi-beam antenna comprises a plurality of channels, signals are subjected to power division and combination in a multi-channel amplitude-phase modulation amplification unit, each channel can receive external millimeter wave signals, independent amplitude modulation, phase modulation and amplification of each channel are realized, the functions of division and combination and multi-channel amplitude modulation and phase modulation and amplification are integrated, the types and the number of chips in the phased array antenna are reduced, and the design of an external circuit is greatly simplified. Satellite embarkation can be achieved on civilian use because of its small volume and low profile. When the satellite runs in a low orbit, the phased array antenna and a base station installed on the ground or a building are in high-speed communication, and a satellite internet is built. In the military field, tracking of multiple targets and accurate striking thereof can be realized.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (4)
1. A satellite communication multi-beam antenna is characterized by comprising a plurality of antenna units and a plurality of multi-channel amplitude-phase modulation amplification units;
four input ends of the multi-channel amplitude and phase modulation amplification unit are connected to the antenna unit; and each multichannel amplitude-phase modulation amplification unit outputs four beams.
2. The satellite communication multibeam antenna of claim 1, wherein each of the multi-channel amplitude-phase modulation amplification units has the same structure, and comprises a four-channel branch signal module, a first feed network, a second feed network, a third feed network, and a fourth feed network;
the input end of each channel branch signal module is connected with an antenna unit; the first output end of each channel branch signal module is used as the input end of a first feed network, and the second output end of each channel branch signal module is used as the input end of a second feed network; the third output end of each channel branch signal module is used as the input end of a third feed network, and the fourth output end of each channel branch signal module is used as the input end of a fourth feed network; the first feed network, the second feed network, the third feed network and the fourth feed network output four beams.
3. The satellite communication multibeam antenna of claim 2, wherein said four-channel branch signal modules are identical in structure, each comprising two LNAs and four signal tributaries;
the input end of each LNA is connected to an antenna unit; the two paths of output ends of the two LNAs are in one-to-one corresponding communication connection with the input ends of the four small signal branches respectively; and the output ends of the four small signal branches are respectively used as the input end of the first feed network, the input end of the second feed network, the input end of the third feed network and the input end of the fourth feed network.
4. The satellite communications multibeam antenna of claim 3, wherein each of said signal tributaries is identical in structure, comprising a phase shifter and a VGA;
the output end of the LNA is in communication connection with the input end of the phase shifter; the output end of the phase shifter is in communication connection with the input end of the VGA; and the output end of each VGA is used as the input end of the feed network.
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| CN202120312669.XU CN214099928U (en) | 2021-02-03 | 2021-02-03 | Satellite communication multi-beam antenna |
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| CN202120312669.XU CN214099928U (en) | 2021-02-03 | 2021-02-03 | Satellite communication multi-beam antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725717A (en) * | 2021-11-02 | 2021-11-30 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725717A (en) * | 2021-11-02 | 2021-11-30 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
| CN113725717B (en) * | 2021-11-02 | 2022-03-11 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
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