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Cryogenic Ka-band 180° phase switch based on schottky diodes

Abstract: A Ka-band hybrid 0/180 ° phase switch working at cryogenic temperature is presented. The circuit is designed on an alumina substrate using uniplanar hybrid technology, combining air-bridged coplanar waveguides and slotlines. Schottky diodes are used as switching elements, taking advantage of their cryogenic behavior, with low equivalent series resistance and low capacitance. Cryogenic performance at 15 K shows a phase difference response of 177 ±2 ° , average insertion losses of 1 dB and amplitude imbalance of less than 0.2 dB between states in the frequency range from 24 to 37 GHz (40% relative bandwidth) with a low-power consumption of 10.5 mW. The low insertion loss and small phase error make the designed phase switch suitable to be used on radioastronomy receivers (QUIJOTE experiment 26-36 GHz band) minimizing the total system noise temperature.

 Autoría: Villa E., Aja B., Cano J., De La Fuente L., Artal E.,

 Fuente: IEEE Microwave and Wireless Components Letters, 2012, 22(2), 52-54

 Editorial: Institute of Electrical and Electronics Engineers Inc.

 Fecha de publicación: 01/02/2012

 Nº de páginas: 3

 Tipo de publicación: Artículo de Revista

 DOI: 10.1109/LMWC.2011.2179920

 ISSN: 1531-1309,1558-1764

 Proyecto español: AYA2010-21766-C03-03 ; CSD2010-00064

 Url de la publicación: https://doi.org/10.1109/LMWC.2011.2179920