期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 60, 期 5, 页码 2260-2269出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2012.2189716
关键词
Active transmit-array antennas; active unit cell; discrete lens; reconfigurable antennas
资金
- Direction Generale de l'Armement (DGA/DS/MRIS), France
An electronically reconfigurable unit cell with 1-bit phase quantization (0 / 180) is proposed for -band linear polarization transmit arrays. It consists of two rectangular patch antennas loaded by U-and O-slots and connected by a metallized via-hole. The transmission phase is controlled using two p-i-n diode switches integrated in the O-slot. An equivalent lumped-element circuit model is implemented and compared successfully to fullwave simulations. The numerical results are validated experimentally using an ad-hoc waveguide simulator. The prototype exhibits low insertion loss (1.8 dB) with the same level for both phase states, a broad 3-dB transmission bandwidth (14.7%), a 1-dB compression point of 13-15 dBm, and a gain of 5 dBi at 9.75 GHz. The performance and simplicity of the proposed unit cellmake it attractive to build electronically steerable transmit arrays in X-band.
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