A wideband correlation and detection module based on substrate-integrated waveguide technology for radio astronomy applications
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Cano de Diego, Juan Luis; Villa Benito, Enrique; Mediavilla Sánchez, Ángel; Artal Latorre, EduardoFecha
2018-06Derechos
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Publicado en
IEEE Transactions on Microwave Theory and Techniques, 2018, 66(6), 3145-3152
Editorial
Institute of Electrical and Electronics Engineers Inc.
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Palabras clave
Correlation
Polarimeter
Radio astronomy
Radiometer
Substrate-integrated waveguide (SIW)
Wideband
Resumen/Abstract
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° phase shifter, and 90° 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.
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