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

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.

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

 Fuente: Review of Scientific Instruments, 2016, 87(9), 094705

Editorial: American Institute of Physics

 Fecha de publicación: 01/09/2016

Nº de páginas: 9

Tipo de publicación: Artículo de Revista

 DOI: 10.1063/1.4963322

ISSN: 0034-6748,1089-7623

Proyecto español: CSD2010-00064

Url de la publicación: https://doi.org/10.1063/1.4963322