Design of a dual-band waveguide filter based on micromachining fabrication process

摘要

In this study, a dual-band waveguide filter based on micromachining fabrication process in terahertz is proposed. The proposed filter employs a pair of four-stage rectangular waveguide resonators based on the parallel structure and the centre frequencies of the two passbands are designed at 240 and 300 GHz with the relative bandwidths of 4.2 and 3.3%. The isolation between the two passbands has been achieved over 40 dB. The simulated and measured results are in good agreement and the proposed filter can be applied in the millimetre wave communication systems.