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Electronics 2018, 7(2), 24; https://doi.org/10.3390/electronics7020024

A Compact In-Line Waveguide-to-Microstrip Transition in the Q-Band for Radio Astronomy Applications

1
Department of Electrical and Electronic Engineering, University of Cagliari, Piazza D’Armi, 09123 Cagliari, Italy
2
Italian Space Agency, 00133 Rome, Italy
*
Author to whom correspondence should be addressed.
Received: 5 January 2018 / Revised: 13 February 2018 / Accepted: 16 February 2018 / Published: 24 February 2018
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Abstract

A microstrip-to-waveguide transition has been realized for radio astronomy applications, designed to operate in the Q-band (33–50 GHz). As part of an array radio frequency (RF) receiver, the main requirement of such a transition is the reduction of transverse space occupation for the integration in the entire receiver chain, so an in-line configuration has been developed. Moreover, the high frequency band implies that an easy fabrication is a critical requirement if a good match between the two guiding structures is to be obtained in the desired band (with a relative bandwidth of 40%). The combination of CAD software and an optimization tool allows the device to achieve a good return loss over the entire band. View Full-Text
Keywords: transition; end-launcher; waveguide; microstrip; optimization; PSO transition; end-launcher; waveguide; microstrip; optimization; PSO
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Simone, M.; Fanti, A.; Valente, G.; Montisci, G.; Ghiani, R.; Mazzarella, G. A Compact In-Line Waveguide-to-Microstrip Transition in the Q-Band for Radio Astronomy Applications. Electronics 2018, 7, 24.

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