Design and Implementation of Proposed Low-Cost Dual-Channel IF Receiver for SSR

This paper presents a new design and implementation of a dual-channel intermediate frequency (IF) receiver for Secondary Surveillance Radar (SSR) System. The proposed IF receiver achieves the requirements of better sensitivity, wide dynamic range and low noise figure. The proposed IF receiver solves the big Problem in all IF receivers which named by the cross-talk between the dual-channel of mono-pulse receiver. The paper describes the issues and tradeoffs in the design and monolithic implementation of the recently mono-pulse IF receivers and proposes circuit techniques that can alleviate the drawbacks of this architecture. The investigation of how certain components error margin may affect the accuracy of a mono-pulse IF receiver. The IF receiver measures the angle of arrival of the incident signal by comparing sum and difference signals created in the receiver. The components of interest are low noise amplifiers, phase shifters and logarithmic amplifiers, where both can give individual and different errors depending on the antenna steering angle. A model of the receiver was made as close as possible for an ideal case using the ADS Software. The a dual-channel IF mono-pulse receiver for detection of multiple replies from targets is designed and implemented using the assembled prototype. The simulation, implementation and laboratory verification results for different test input are observed and analyzed for performance improvements mainly in secondary radar application such as detection of multiple replies from the target and decoding of data.