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A compact low-power linear-in-dB CMOS AGC
2014 Edition, October 1, 2014 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents a low-power and compact automatic gain control circuit which consumes only 1.3 mW and occupies only 0.008 mm2 fabricated in TSMC 0.18-µm CMOS technology. The core of the proposed AGC is a variable gain amplifier (VGA)...

CMOS digitally programmable cell for high frequency amplification and filtering
2004 Edition, Volume 1, January 1, 2004 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents an approach to the implementation of systems combining variable gain amplifiers (VGA) and programmable continuous-time G/sub m/-C filters in the video frequency range. The technique relies on the use of a versatile high-performance...

A Precise Decibel-Linear Programmable Gain Amplifier Using a Constant Current-Density Function
2012 Edition, Volume 60, September 1, 2012 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In this paper, a compensation technique for realizing a precise decibel-linear CMOS programmable gain amplifier (PGA) is described. The proposed PGA, employing an auxiliary pair, not only retains a constant current density but also offers...

A CMOS low-IF programmable gain amplifier with speed-enhanced DC offset cancellation
2002 Edition, January 1, 2002 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents a programmable gain amplifier (PGA) for a dual band (GSM900/DCS1800) low-IF receiver. It uses a negative feedback approach to achieve the high linearity requirement. In addition to the amplifier, anti-alias filtering and DC...

A 255 MHz Programmable Gain Amplifier and Low-Pass Filter for Ultra Low Power Impulse-Radio UWB Receivers
2012 Edition, Volume 59, February 1, 2012 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A 90 nm-CMOS power-optimized analog baseband chain for ultra-low-power impulse-radio ultra-wideband (IR-UWB) receivers is presented. The proposed device merges the functions of a programmable gain amplifier (PGA) and a low-pass filter (LPF). It...

A WiMAX Receiver with Variable Bandwidth of 2.5 - 20 MHz and 93 dB Dynamic Gain Range in 0.13-μm CMOS Process
2007 Edition, June 1, 2007 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A low-IF receiver for WiMAX applications has been designed and fabricated in TSMC 1P8M 0.13-μm CMOS process. It contains an on-chip single-ended low noise amplifier, balun, double-balanced mixers, and an analog baseband which consists of programmable gain...

A 56MΩ CMOS TIA for MEMS applications
2009 Edition, September 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We present the analysis, design, and measurement results of a high-gain, low-noise differential transimpedance amplifier (TIA) designed to interface with electrostatic Microelectromechanical Systems (MEMS) resonators. A capacitive-feedback current amplifier drives...

Design of Reconfigurable dB-Linear Variable-Gain Amplifier and Switchable-Order gm-C Filter in 65-nm CMOS Technology
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A system approach for a power-scalable analog baseband (ABB) design is presented in this article. Using this approach, the energy efficiency of an ABB can be maximized without compromising any other important specifications. To fulfill the feasibility study, a...

Design of a low-power variable gain amplifier for reconfigurable wireless receivers
2005 Edition, December 1, 2005 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents the design of a variable gain amplifier (VGA) to be used in a reconfigurable receiver for wireless applications. The gain of the block can be digitally programmed between 0 and 35 dB, with a uniform step of 2...

A CMOS variable gain amplifier for a wideband wireless receiver
1998 Edition, January 1, 1998 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The variable gain amplifier (VGA) embedded in an automatic gain control (AGC) loop is an essential component of a linear receiver. The AGC builds up the received signal to some specified peak output so that it fully loads the fixed full-scale of, say, an...

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