WR-1.5 (500–750 GHz) waveguide bandpass filter fabricated using high precision computer numerically controlled machining

Research output: Contribution to journalArticlepeer-review


Colleges, School and Institutes

External organisations

  • South University of Science and Technology of China
  • City University of Hong Kong


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.

Bibliographic note

Publisher Copyright: © 2020 Wiley Periodicals LLC


Original languageEnglish
JournalMicrowave and Optical Technology Letters
Early online date1 Dec 2020
Publication statusE-pub ahead of print - 1 Dec 2020