A New Method to Design Multi-Standard Analog Baseband Low-Pass Filter

Abstract

Multi-standard transceivers allow to process different protocols in a single chip. These type transceivers need reconfigurable analog elements. In this work reconfigurable Analog Baseband low-pass filter is designed to support the application of Bluetooth, CDMA2000, Wideband CDMA, and IEEE 802.11a/b/g/n wireless LANs and 2G/3G/4G. The designed filter operates between 20kHz-40MHz. The filter is designed with cell-based variable transconductance amplifier. The minimum value of the designed filter'sthird order intersection point is 17.8dBm. The performance of the designed circuit is tested with TSMC 0.18 mu m technology in CADENCE environment.