A Wideband Correlation and Detection Module Based on Substrate-Integrated Waveguide Technology for Radio Astronomy Applications

作者：Luis Cano Juan; Villa Enrique; Mediavilla Angel; Artal Eduardo

来源：IEEE Transactions on Microwave Theory and Techniques, 2018, 66(6): 3145-3152.

DOI：10.1109/TMTT.2018.2823305

• Correlation
• polarimeter
• radio astronomy
• radiometer
• substrate-integrated waveguide (SIW)
• wideband

A wideband (30% relative bandwidth) correlation and detection module based on substrate-integrated waveguide (SIW) technology intended for a radio astronomy polarimeter is presented. The SIW circuit is a six-port network with two input ports that are correlated in two hybrid couplers and their corresponding output signals are routed to Schottky diode detectors, which are designed using microstrip technology and assembled within the same system. The designed SIW structure includes hybrid couplers, power dividers, a 90 degrees phase shifter, and 90 degrees bends, providing a real implementation of a functional system with improved bandwidth performance from 35 to 47 GHz. Experimental results are in concordance with simulations, and they validate the module operation for the proposed application.

• 出版日期2018-6