High-performance microstrip directional coupler for radio-astronomical receivers at cryogenic temperature

MONTISCI, GIORGIO;
2014-01-01

Abstract

A microstrip directional coupler with high directivity is proposed for microwave applications requiring a weak coupling factor. This component has been used in the L-band radio-astronomical receiver of the Sardinia radio telescope. To improve the performance of the receiver, the operating temperature is lowered to 20 K. An in-house cryostat has been manufactured to perform measurements on the directional coupler, and very good agreement with the design specification is achieved.
2014
Inglese
ELECTRONICS LETTERS
50
6
449
451
3
WOS:000333409000018
2-s2.0-84896968248
Esperti anonimi
internazionale
scientifica
no
Valente, G; Montisci, Giorgio; Mariotti, S.
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
3
reserved
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