Q-band 4-state phase shifter in planar technology: Circuit design and performance analysis

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URI: http://hdl.handle.net/10902/11123
ISSN: 0034-6748
ISSN: 1089-7623
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Autoría
Villa Benito, EnriqueAutoridad Unican; Cagigas Ibañez, JaimeAutoridad Unican; Aja Abelán, BeatrizAutoridad Unican; Fuente Rodríguez, Luisa María de laAutoridad Unican; Artal Latorre, EduardoAutoridad Unican
Fecha
2016-09
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© 2016 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Review of Scientific Instruments, 2016, 87(9), 094705 and may be found at https://doi.org/10.1063/1.4963322
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Review of Scientific Instruments, 2016, 87(9), 094705
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American Institute of Physics
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Resumen/Abstract
A 30% bandwidth phase shifter with four phase states is designed to be integrated in a radio astronomy receiver. The circuit has two 90° out-of-phase microwave phase-shifting branches which are combined by Wilkinson power dividers. Each branch is composed of a 180° phase shifter and a band-pass filter. The 180° phase shifter is made of cascaded hybrid rings with microwave PIN diodes as switching devices. The 90° phase shift is achieved with the two band-pass filters. Experimental characterization has shown significant results, with average phase shift values of -90.7°, -181.7°, and 88.5° within the operation band, 35–47 GHz, and mean insertion loss of 7.4 dB. The performance of its integration in a polarimetric receiver for radio astronomy is analyzed, which validates the use of the presented phase shifter in such type of receiver.
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