An 880 / 1760 MHz tunable bandwidth active RC low-pass filter using high gain amplifier

For 60GHz unlicensed applications, an analog base-band filter using an active RC type is presented. An 880 / 1760 MHz tunable bandwidth third order Butterworth low-pass filter using high gain amplifiers is fabricated in 90nm standard CMOS process. Drawing 29.2 mW from 1.2 V power supply, the low frequency gains of the filter are -1.2 and -2.5 dB, and the output third order intercept points (OIP3) are +2.85 and +2.35 dBm for the single channel and channel bonding conditions, respectively.