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WR ‐1.5 ( 500–750 GHz ) waveguide bandpass filter fabricated using high precision computer numerically controlled machining
Author(s) -
Wang Daxin,
Lancaster Michael J.,
Wang Yi,
Shum Keeson M.,
Zhang Qingfeng
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32739
Subject(s) - passband , band pass filter , return loss , insertion loss , center frequency , fabrication , bandwidth (computing) , surface micromachining , materials science , filter (signal processing) , waveguide , electronic engineering , optoelectronics , engineering , telecommunications , electrical engineering , antenna (radio) , pathology , medicine , alternative medicine
In this paper, a WR‐1.5 band (500–750 GHz) 3rd order waveguide bandpass filter has been designed and fabricated using high precision computer numerically controlled metal micromachining. The filter has been measured with a 7.29% (48.7 GHz) bandwidth at the center frequency of 667.5 GHz. The minimum passband insertion loss is measured to be 0.87 dB and the measured return loss is better than 10 dB across the whole passband. A yield percentage is analysed and estimated based on the fabrication tolerance.