Experimental Characterization of a Circularly Polarized 1 Bit Unit Cell for Beam Steerable Transmitarrays at Ka-Band

被引：27
作者：
Di Palma, Luca [1 ,2 ,3 ]
Clemente, Antonio [1 ,2 ]
Dussopt, Laurent [1 ,2 ]
Sauleau, Ronan [4 ]
Potier, Patrick [5 ]
Pouliguen, Philippe [6 ]
机构：
[1] Univ Grenoble Alpes, F-38000 Grenoble, France
[2] CEA, LETI, MINATEC Campus, F-38054 Grenoble, France
[3] Space Engn SpA, Airbus Grp, I-00156 Rome, Italy
[4] Univ Rennes 1, Inst Elect & Telecommun Rennes, F-35042 Rennes, France
[5] Direct Gen Armement, F-35174 Bruz, France
[6] Direct Gen Armement, Strategy Directorate, Off Adv Res & Innovat, F-92221 Bagneux, France
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2019年 / 67卷 / 02期
关键词：
Array lens; circular polarization (CP); discrete lens; Ka-band; transmitarray antenna; waveguide simulator;
D O I：
10.1109/TAP.2018.2880095
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We propose here an experimental characterization procedure applied to a 1 bit reconfigurable transmitarray unit cell working in circular polarization (CP) at Ka-band. The transmission phase of the unit cell is controlled on the receiving side by switching two p-i-n diodes integrated on the radiating element. The CP is generated on the transmitting side with a truncated corner patch antenna. A specific waveguide characterization setup and related procedure have been developed to extract the unit cell S-matrix. The proposed setup includes nonstandard waveguide sections, ad hoc transitions, and an orthomode transducer. The experimental results demonstrate a good agreement with full-wave simulations with a discrepancy of less than 0.1 dB on the measured minimum insertion loss of 1.65 dB at 29 GHz. A 3 dB bandwidth larger than 12% has been measured.
引用
收藏
页码：1300 / 1305
页数：6
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