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.
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.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
06777243_EL_2014.pdf
Solo gestori archivio
Tipologia:
versione editoriale (VoR)
Dimensione
343.55 kB
Formato
Adobe PDF
|
343.55 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.