Advanced Analog Filters for Telecommunications

In this paper advances on analog filter design for telecom transceivers are addressed. Portable devices require a strong power consumption reduction to increase the battery life. Since a considerable part of the power consumption is due to the analog baseband filters, improved and/or novel analog filter design approaches have to be developed. In this paper some advances on this field reported in last years are summarized. Each design (developed for different standards) exploits the standard specifications with different architectures and circuit strategies devoted to power consumption reduction. The first is for reconfigurable Bluetooth/UMTS/WLAN receivers, the second is for very-low voltage (550 mV) WLAN receivers, the third one is for impulse-radio UWB receivers, while the fourth is for very low-power OFDB-UWB receivers.