A Comparitive Analysis of Radio Frequency Band Pass Filters for Wireless Communication Application

Abstract

With the development of CMOS technology in wireless communication it has led to the unification of wireless circuitry on a single chip. For reconfigurable RF front end circuitry for RF transceivers spiral inductors were preferred which were bulkier, fixed and used to cover large areas and were affected by parasitic losses, resistive losses, so with rising demands and rising technological advancement led to the discovery of on-chip filters based on emulation of inductors using active devices like op-amps, trans-resistance amplifiers, transconductance amplifiers. Various active filter topologies are studied and reviewed of years with regress efforts such as the switched capacitor topology, the active RC- filter topology, the MOSFET-C topology and Gm-C filter topology with their merits and applications specifically in wireless communication for radio frequencies. A band pass filter based on emulated active inductor circuit is being analysed at 21.6GHz frequency on cadence virtuoso gpdk 90nm technology with analysed parameters as noise figure, power dissipation, quality factor etc. A comparative study of the different band pass filters so far study is also presented.