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

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’s third order intersection point is 17.8dBm. The performance of the designed circuit is tested with TSMC 0.18µm technology in CADENCE environment.