期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 28, 期 7, 页码 573-575出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2018.2835650
关键词
Bandpass filter; terahertz (THz) filter
资金
- National Natural Science Foundation of China [61504124]
- National Defense Science and Technology Innovation Special Zone Fund [00402901]
This letter demonstrates a terahertz (THz) bandpass filter with a center frequency of similar to 340 GHz, low insertion loss of similar to -0.6 dB, and bandwidth of similar to 5.3%. The diaphragm thickness is quantitatively analyzed to obtain accurate filter parameters based on equivalent circuit and diaphragm coupling in THz band for the first time, and the simulation results based on calculated filter parameters show that diaphragm thickness has great influence on the filter performance. The test results show a good agreement with the theoretical analysis and simulation results. Meanwhile, the relationship between fabrication error and insertion loss was discussed and a quantitative mathematical model is given. The filter also shows an excellent performance when compared with the performance of other filters from the current literature reports.
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