Monolithic RF WLAN filters design using high performance passive and active component technology

In this paper, we present the design of RF filters for a WLAN front-end in a high resistivity silicon copper technology for high performance monolithic active and passive devices. A MATLAB based integrated environment is used to simulate and optimize the wanted inductors. Then the whole designed filter will be simulated in HFSS for final checking. For the first run, the fabricated harmonics filter achieved an insertion loss of less than 0.3dB and 2nd and 3rd harmonic attenuations of more than 30dB and the fabricated band-pass filter (BPF) achieved an insertion loss of less than 2dB and an out of band attenuation of more than 25dB for the WLAN 2.4GHz frequency band. The fabricated harmonics filter and BPF features a size of 0.75×0.67mm² and 1.0×1.3mm² respectively.