Lumped element band pass filter design on 130nm CMOS using delta-star transformation

Abstract

This paper presents the design of a 10GHz lumped element band pass filter on standard 130nm CMOS technology. A series coupled resonator topology is selected due to its advantages over classical low-pass to band-pass filter mapping. A delta-star transformation technique is used in the network synthesis to minimise the impact of stray capacitances, and to avoid the problem of fabricating excessively small coupling capacitors.