Dual frequency dual line polarization phased array antenna and antenna unit
A phased array antenna and dual-line polarization technology, which is applied in the directions of antenna, antenna coupling, antenna array, etc., can solve the problem of heavy weight, difficulty in meeting the high isolation requirements of satellite uplink and downlink communication, and difficulty in covering dual frequency bands of reception and transmission, etc. question
Active Publication Date: 2021-08-31
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
However, this type of structure has a high profile, heavy weight, complex processing, and is difficult to integrate with the back-end RF circuit
[0004] However, the existing broadband dual-polarization microstrip patch is difficult to cover the receiving and transmitting dual frequency bands and the isolation of the receiving and receiving ports is low, and it is difficult to meet the requirements of satellite uplink and downlink communication and high isolation.
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[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0038]It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechani...
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The invention discloses a dual-frequency dual-line polarization phased array antenna and an antenna unit. The antenna unit includes: a hierarchical structure of multi-layer metal layers, and a dielectric layer for isolation between adjacent metal layers, wherein, The multi-layer metal layer includes: a parasitic patch, a radiation patch, a transmitting and feeding network, a first grounding metal plate, a second grounding metal plate, and a receiving and feeding network; wherein, the parasitic patch and the radiating patch are rectangular Metal patch; the transmitting and feeding network feeds parasitic and radiating patches through electromagnetic coupling; a gap is etched in the first grounding metal plate, which is the radiation patch, transmitting and feeding network and receiving and feeding network A common metal ground; the second ground metal plate is etched with a via hole opposite to the slot in the first ground metal plate; the receiving and feeding network feeds the parasitic and radiating patches through slot coupling. By applying the present invention, the low profile of the antenna and the performance of easy back-end radio frequency integration can be realized through the microstrip patch, and dual frequency bands of coverage reception and transmission can be realized.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a dual-frequency dual-line polarization phased array antenna and an antenna unit. Background technique [0002] With the explosive growth of business demands such as the global Internet and the Internet of Things, the low-orbit satellite constellation network has become a research hotspot at present and in the future, and the electronically scanned phased array antenna, as one of the core equipment on the satellite, has been proposed more strict requirements. Considering the satellite carrier platform and launch cost, the space-borne phased array antenna needs to meet low profile, light weight, and low-cost performance; considering the range of uplink and downlink frequency bands of satellite communications, different polarization forms, and the need to minimize the size of the antenna, Space-borne phased array antennas need to meet dual-frequency dual-polarizatio...
Claims
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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q21/00H01Q23/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q21/00H01Q23/00
Inventor 李秀萍黄雨菡
Owner BEIJING UNIV OF POSTS & TELECOMM