345 GHz Band-Pass Filter Using Ultra-Precision Machining Technology |
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| Authors: | Yu-Kun Li Yong Zhang Cai-Jie Ai |
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| Affiliation: | 1.the Fundamental Science on EHF Laboratory,University of Electronic Science and Technology of China,Chengdu 611731,China |
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| Abstract: | This paper presents a terahertz (THz) band-pass filter using ultra-precision machining technology based on Chebyshev filter prototype. This iris inductive window coupled waveguide filter was designed by using 8 resonant cavities with a center frequency of 345 GHz and a 7% bandwidth. The final design fulfills the desired specifications and presents the minimum insertion loss of 1.55 dB and the return loss of less than 15 dB at 345 GHz. The stop-band rejection is 50 dB off the center frequency about 30 GHz, which means it has a good performance of high stop-band suppression. Compared with the recent development of THz filters, this filter possesses the characteristic of simple structure and is easy to machining. |
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| Keywords: | Filter prototype simple structure ultra-precision machining technology |
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