Fully Differential 2 GHz 2.7V 4th-OrderLow-Noise Active Bandpass Filter on Silicon

In this paper we present a 2.7 V fully differential fourth-order bandpass filter developed and realised around four inductors electrically coupled using MOSFETs. Varactors are used for frequency tuning. An amplifier is cascaded at the input for noise and impedance matching. Philips QUBIC4 Si BiCMOS technology is used [1].