LNA97DISCLAIMER: This article was published in RF Design in February 1999 and has been reprinted with permission of the publisher, Intertec.LNA design for CDMA front end by Jarek Lucek Market Application Engineer andRobbin Damen, Development/Application Engineer. Philips SemiconductorsAbstract: This article will step the reader through a practical design of a front end 900 MHz and 1.9 GHz CDMA Low Noise Amplifier. The main emphasis will be put on Noise Figure, IP3, Gain and power dissipation trade offs. The main topics of the article will include the following: Bias design Circuit stabilization Noise optimization Linearity optimization Load pull for gain and IP3 trade off improvement Complete circuit characterizationThe LNA design will be carried out with a discrete, 5th generation……
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