Reflection mode mm‐wave on‐chip notch filters using coupled hairpin resonators

Abstract

An on-chip implementation of a W-band filter with dual notches at 82 and 95 GHz is presented. Reflection mode filtering methods are implemented with dual hairpin resonator networks, using the inherent parasitic losses in the resonators to create matched loads at the stopband frequencies of interest while reflecting passband power. Notches of 6 and 10.6 dB stopband insertion loss, and 3.7 and 5.6% relative bandwidths, respectively, were achieved. This represents the first implementation of reflection mode filtering in the W-band on-chip.