CMOS LNA & mixer design.pdf

CMOS LNA & mixer designSome Design Aspects on RF CMOS LNAs and Mixers

Anna-Karin Stenman

Department of Electroscience Lund University P. O. Box 118, S-221 00 LUND SWEDEN 2001 Anna-Karin Stenman

No. 26 ISSN 1402-8662 Printed in Sweden KFS AB Lund, December 2001

To Markus

Abstract
This thesis deal with two parts of a radio receiver. The low noise amplifier (LNA) and the mixer. A tuned RF front-end amplier in CMOS with an operating frequency around 1.8 to 2GHz has been investigated. A symmetric design has been used to improve linearity with preserved power consumption. In this case it has been a parallel connection of complementary devices. The symmetric solution allows the use of inductor pairs in transformer configuration to improve the gain of the circuit. The input impedance has been controlled by an