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Analysis of the Linear Amplifier/Analog-Digital Converter Interface in a Digital Microwave Receiver

, and . IEEE Trans. on Aerospace and Electronic Systems, 31 (1): 248-257 (January 1995)

Abstract

An analysis of the relationship between a linear amplifier chain and an analog-to-digital converter (ADC) in a digital microwave receiver, with respect to sensitivity and dynamic range issues, is presented. The effects of gain, third-order intermodulation products and ADC characteristics on the performance of the receiver are illustrated and design criteria for the linear amplifier chain (given a specified ADC) are developed. A computer program is included which calculates theoretical receiver performance based on gain and third-order intermodulation product selections. Experimental results are also presented and compared with theoretical values.

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