Dual-frequency dual-linear polarization phased-array antenna and antenna unit

Abstract

The invention discloses a dual-frequency dual-linear polarization phased-array antenna and an antenna unit, and the antenna unit comprises a hierarchical structure with a plurality of metal layers, and dielectric layers which are arranged between adjacent metal layers and are used for isolation, wherein the metal layers comprise a parasitic patch, a radiation patch, a transmitting feed network, afirst grounding metal plate, a second grounding metal plate and a receiving feed network, wherein the parasitic patch and the radiation patch are rectangular metal patches; the transmitting feed network feeds the parasitic patch and the radiation patch in an electromagnetic coupling mode; a gap is etched in the first grounding metal plate and is a common metal ground of the radiation patch, the transmitting feed network and the receiving feed network; a via hole opposite to the gap in the first grounding metal plate is etched in the second grounding metal plate; and the receiving feed networkfeeds the parasitic and radiation patches in a slot coupling mode. According to the invention, the low profile of the antenna and the performance of easy rear-end radio frequency integration can be realized through the microstrip patch, and the coverage of receiving and transmitting double frequency bands can also 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...

AI Technical Summary

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.

Images