Design of W band hairpin filter with IPD technology

Abstract

In this paper, a hairpin-type filter based on integrated passive device (IPD) technology is presented for system in package (SIP) application. To the best of our knowledge, it is the first time that hairpin filter is designed, fabricated and measured up to W band. The measurement result shows the filter has a 3 dB bandwidth of 8GHz at the center frequency of 95.5 GHz, about 5 dB insertion loss and better than -10 dB return loss in the pass-band. The die dimension is 0. 95 × 0. 40 mm2. Therefore, compact size, small insertion loss and good agreement between simulation and measurement are achieved in this filter.