Design and simulation of a dual-polarized twin slot antenna for transition edge sensor detectors

Qing-Cheng Wang; Wei Miao; Fei-Ming Li; Zhao-Hang Peng; Jiang-Qiao Ding; Jia-Qiang Zhong; Zheng Wang; Kang-Min Zhou; Yuan Ren; Wen Zhang; Jing Li; Sheng-Cai Shi

doi:10.1117/12.2688645

26 November 2023 Design and simulation of a dual-polarized twin slot antenna for transition edge sensor detectors

Qing-Cheng Wang, Wei Miao, Fei-Ming Li, Zhao-Hang Peng, Jiang-Qiao Ding, Jia-Qiang Zhong, Zheng Wang, Kang-Min Zhou, Yuan Ren, Wen Zhang, Jing Li, Sheng-Cai Shi

Author Affiliations +

Proceedings Volume 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X; 1277617 (2023) https://doi.org/10.1117/12.2688645
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Lens integrated twin slot antennas have been widely used in superconducting transition edge sensor (TES) detectors due to its high directivity and low cross-polarization. In this paper, we present the design and simulation of a 210 GHz dual-polarized twin slot antenna for TES detectors. We used Ansoft HFSS to simulate the return loss and isolation of the dual-polarized twin slot antenna. The results show that the return loss of the dual-polarized twin slot antenna is less than -15 dB and the isolation is great than 10 dB in the frequency range from 170 GHz to 230 GHz. We also used FEKO to simulate the beam pattern of the dual-polarized twin slot antenna integrated with a silicon lens with a diameter of 5 mm. After optimizing the extended length of the silicon lens, a near Gaussian beam with a half power beam width (HPBW) of 19.4 degrees and a side lobe level of 17.3 dB was obtained. In addition, we designed and simulated an air bridge that is used to transmit the signals received by the twin slot antennas in the orthogonal directions. We find that the transmission coefficient of the air bridge is close to 0 dB and the isolation in the orthogonal directions exceeds 35 dB.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Qing-Cheng Wang, Wei Miao, Fei-Ming Li, Zhao-Hang Peng, Jiang-Qiao Ding, Jia-Qiang Zhong, Zheng Wang, Kang-Min Zhou, Yuan Ren, Wen Zhang, Jing Li, and Sheng-Cai Shi "Design and simulation of a dual-polarized twin slot antenna for transition edge sensor detectors", Proc. SPIE 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X, 1277617 (26 November 2023); https://doi.org/10.1117/12.2688645

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