Journal of Terahertz Science and Electronic Information Technology , Volume. 19, Issue 2, 181(2021)
A low insertion loss 180 GHz cavity bandpass filter
A 8-pole terahertz(THz) cavity bandpass filter with low insertion loss based on H ladder structure is presented. The filter is simulated and optimized by Ansoft HFSS, and it is finally processed by computer numerical control milling. The measured results show that the center frequency of the filter is located at 179.1 GHz with 1 dB fraction bandwidth of 8.4%. The insertion loss at 179.1 GHz is 0.34 dB, and the return loss is lower than 18.9 dB. The proposed THz cavity bandpass filter possesses the merits of low insertion loss, high selectivity and high stopband suppression, which can meet the requirements of THz communication systems.
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XIONG Yang, PEI Naichang, HE Yilong, HUANG Jian. A low insertion loss 180 GHz cavity bandpass filter[J]. Journal of Terahertz Science and Electronic Information Technology , 2021, 19(2): 181
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Received: Mar. 4, 2020
Accepted: --
Published Online: Jul. 16, 2021
The Author Email: Yang XIONG (xiongyang0291@163.com)