Low Noise CMOS Transconductance Amplifier for GPS Applications

DOI

10.2991/eame-15.2015.145How to use a DOI?

Keywords

CMOS OTA;GPS; receiver; transconductance amplifier; active feedback; sdc

Abstract

In recent years, due to distinct advantages of CMOS, the research emphasis is on use of CMOS technology rather than bipolar or BiCMOS at Radio Frequency applications. One such example is Transconductance Amplifiers used in various Global Positioning System (GPS) applications. This paper describes a CMOS Operational Transconductance Amplifier (OTA) intended for use in front-end of Global Positioning System (GPS) receiver. The proposed CMOS OTA is a three stage amplifier with fully integrated direct conversion architecture without surface acoustic wave (SAW) filter, implemented in 180nm standard TSMC process technology. The simulation results indicate high power gain of the order of 20.63 dB with noise figure of 4.7 dB & the third-order input referred intercept point (IIP3) is found to be 7 dBm. The proposed amplifier has high linearity, low noise figure with transconductance of 121mS that makes it suitable for use in GPS systems.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - P. Katolkar
AU  - D. Dahigaonkar
AU  - D.G. Wakde
PY  - 2015/07
DA  - 2015/07
TI  - Low Noise CMOS Transconductance Amplifier for GPS Applications
BT  - Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering
PB  - Atlantis Press
SP  - 512
EP  - 515
SN  - 2352-5401
UR  - https://doi.org/10.2991/eame-15.2015.145
DO  - 10.2991/eame-15.2015.145
ID  - Katolkar2015/07
ER  -