Design of 60-GHz millimeter-wave CMOS RFIC-on-Chip bandpass filter

This paper presents design and implementation of a 60-GHz millimeter-wave RFIC-on-chip bandpass filter with a 0.18-mum standard CMOS process. A planar ring resonator structure with dual transmission zeros was adopted to design this CMOS filter. The die size of the chip is 1.148 times 1.49 mm². The measured insertion loss of a designed bandpass is less than 5 dB from 59 to 68 GHz. The investigations of sensitivity to the insertion loss and the passband bandwidth for different perturbation stub sizes are also studied. The filter has a 5-dB bandwidth of about 9 GHz at the center frequency of 64 GHz. The measured insertion loss of the passband is about 4.9 dB and the return loss is better than 10 dB within passband.