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

디지털 광대역 마이크로 웨이브 수신기에서의 선형 증폭기와 ADC 접 속의 해석

An analysis of the relationship between a linear amplifier chain and an analog-to-digital converter(ADC) in a digital microwave widevand 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 used to calculate theretical receiver performance based on gain and third-order intermodulation product selections. Simulated results are also presented and compared with theoretical values.