In the recent past, there has been an evolution in wireless communications toward
multifunctions and multistandard mobile terminals. Reducing the number of external …

An RF front-end for dual-band dual-mode operation is presented. The front-end consumes
22.5 mW from a 1.8-V supply and is designed to be used in a direct-conversion WCDMA and …

This paper presents a novel approach to design a digitally programmable low pass filter
(LPF) and variable gain amplifier (VGA) intended for a software-defined radio (SDR) front …

A fourth-order low-pass continuous-time filter for a UMTS/WLAN receiver of a reconfigurable
terminal is presented. The filter uses the cascade of two Active-G/sub m/-RC biquad cells. A …

A method to design low-power low-area active RC filters is presented. The output voltages of
the operational amplifiers are scaled and buffered, allowing the use of single stage …

A new approach for designing digitally programmable CMOS integrated baseband filters is
presented. The proposed technique provides a systematic method for designing filters …

A third-order G/sub m/-C Butterworth low-pass filter implementing G/sub m/-tuning and G/sub
m/-switching to maximize the tuning range is described. This filter is intended to be used as …

A 0.55 V supply voltage fourth-order low-pass continuous-time filter is presented. The low-
voltage operating point is achieved by an improved bias circuit that uses different opamp …

The fourth-generation (4G) of cellular terminals will integrate the services provided by
previous generations second-generation/third-generation (2G/3G) with other applications …

By the end of this decade, a 4G wireless terminal will be available that provides high quality
multimedia, personalized services, and ubiquitous multi-standard broadband connectivity …