Silicon-based small-sized common-caliber dual-frequency dual-polarized broadband array antenna

Abstract

The invention discloses a silicon-based small-sized common-caliber dual-frequency dual-polarized broadband array antenna. The antenna comprises a plurality of dual-frequency dual-polarized antenna units, and each dual-frequency dual-polarized antenna unit adopts a laminated structure and consists of a low-frequency band radiation unit, a high-frequency band radiation unit, two frequency band feedstructures and a metal grounding plate. The low-frequency-band radiation unit is provided with a square hole and is placed in the high-frequency-band radiation unit to achieve the common caliber. Thehigh-resistance silicon is adopted as a dielectric substrate, so that the array element size is greatly reduced, and the miniaturization requirement is met. The bandwidth of the antenna is broadened in a manner of hollowing out a silicon-based air introduction layer. The common-caliber dual-frequency dual-polarization broadband array antenna can work in two frequency bands with the frequency ratiobeing about 2 at the same time, the characteristics of the two frequency bands are dual polarization, the antenna array layout is reasonable, and the common-caliber dual-frequency dual-polarization broadband array antenna has the advantages of being simple in structure, small in size, good in polarization performance, high in antenna isolation and the like.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a silicon-based small-sized common-aperture dual-frequency dual-polarization broadband array antenna, which can be used as a radio frequency transceiver front-end antenna and can be applied to wireless systems such as mobile communication and phased array radar. Background technique [0002] With the rapid development of wireless communication technologies such as mobile communication, satellite communication and radar, wireless communication systems are developing towards low cost, planarization, miniaturization and multi-function. In order to adapt to the development of communication systems, the current antenna design should be able to integrate multiple functions. The dual-polarization working antenna can effectively solve the problem of path fading, reduce the number of antennas, reduce the cost of the antenna, and realize polarization diversity and polarization agility; in...

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Problems solved by technology

[0008] Xu Yongjie from Guilin University of Electronic Science and Technology "Design of Ku-band Broadband Dual-frequency Dual-polarization Microstrip Antenna Array" uses aperture coupling theory, reverse-phase feeding technology and single-layer microstrip patch structure to realize a microstrip antenna array with dual-polarization ports The isolation is less than -33dB, the relative impedance bandwidth is better than 6.9%, and the performance is good. Compared with the double-layer structure of the present invention, the single-layer microstrip patch structure limits the frequency ratio of the two frequency bands, and one frequency band corresponds to one pole The characteristics of the direction of transformation make it have limitations in application

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