High linearity CMOS variable gain amplifier for UWB applications

Abdalla, Ibrahim L.; Khalaf, Yaser A.; Farag, Fathi A.

doi:10.11648/j.cssp.20120101.11

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2014

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“…VGA is used to maximize the dynamic range of overall system by maintaining a fixed voltage output for various input signals at the receiver in many communication systems, medical equipments, hearing aids, disk drives, and others. [1]- [6] . VGA play the important role of stabilizing the amplitude of the output signal under various conditions [5].…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of class AB VGA in deep sub micron technology

2014

IJAERD

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A variable gain amplifier (VGA) is an indispensible building block in many communication systems. In communication receiver, VGA is typically employed in a feedback loop to realize an automatic gain control (AGC). In this paper class AB VGA consisting of a linear transconductor amplifier and a linear transimpedance amplifier, is designed, analyzed and simulated in GENERIC 0.13um CMOS process(pre-layout and post-layout simulation is done) using Mentor Graphics Tool. The simulation results shows that, the modified VGA has bandwidth of 1660MHz and gain of 66.01 dB and power dissipation is less than 100uW at 1.2v supply voltage. The results show that the circuit is capable of working with high linearity and wide bandwidth by varying Rf and Rs. The modified class AB VGA is appropriate for low power, UWB applications.

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Section: Introductionmentioning

confidence: 99%

Design and Implementation of class AB VGA in deep sub micron technology

2014

IJAERD

View full text Add to dashboard Cite

show abstract

High linearity CMOS variable gain amplifier for UWB applications

Cited by 1 publication

References 17 publications

Design and Implementation of class AB VGA in deep sub micron technology

Design and Implementation of class AB VGA in deep sub micron technology

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