Title :
Analysis of the linear amplifier/analog-digital converter interface in a digital microwave receiver
Author :
Sharpin, David L. ; Tsui, James B Y
Author_Institution :
Wright Lab., Wright-Patterson Air Force Base, OH, USA
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.<>
Keywords :
analogue-digital conversion; circuit CAD; circuit analysis computing; digital circuits; electronic warfare; fast Fourier transforms; intermodulation distortion; microwave receivers; ADC characteristics; EW; analog-digital converter; computer program; design criteria; digital microwave receiver; dynamic range; electronic warfare; gain; interface; linear amplifier; sensitivity; surveillance; theoretical receiver performance; third-order intermodulation products; Analog-digital conversion; Bandwidth; Dynamic range; Microwave amplifiers; Noise figure; Noise generators; Noise level; Noise reduction; Power amplifiers; Power generation;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
