Low-loss compact dual-band filter with dual mode resonator

Abstract

This paper presents the design of a compact dual mode dual-band microstrip filter. A dual mode resonator is proposed based on the concept of SIR. The dual band filter can support CDMA and WiFi simultaneously. The measured results show that insertion loss are 0.62 dB and 1.2 dB at 0.85GHz and 2.46GHz respectively which are in excellent agreement with simulation.