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

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URI: https://hdl.handle.net/10902/38420
ISSN: 1531-1309
ISSN: 1558-1764
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Autoría
Villa Benito, EnriqueAutoridad Unican; Aja Abelán, BeatrizAutoridad Unican; Cano de Diego, Juan LuisAutoridad Unican; Fuente Rodríguez, Luisa María de laAutoridad Unican; Artal Latorre, EduardoAutoridad Unican
Fecha
2012-02
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© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publicado en
IEEE Microwave and Wireless Components Letters, 2012, 22(2), 52-54
Editorial
Institute of Electrical and Electronics Engineers Inc.
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Palabras clave
Broadband
Coplanar-to-slotline transition
Cryogenics
Millimeter wave
Phase switch
Schottky diodes
Uniplanar circuit
Resumen/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.
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