@article{10902/11123,
year = {2016},
month = {9},
url = {http://hdl.handle.net/10902/11123},
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.},
organization = {This work was supported by the Ministerio de Economía y Competitividad, Spain, under the CONSOLIDER-INGENIO 2010 programme under the Reference No. CSD2010-00064.},
publisher = {American Institute of Physics},
publisher = {Review of Scientific Instruments, 2016, 87(9), 094705},
title = {Q-band 4-state phase shifter in planar technology: Circuit design and performance analysis},
author = {Villa Benito, Enrique and Cagigas Ibañez, Jaime and Aja Abelán, Beatriz and Fuente Rodríguez, Luisa María de la and Artal Latorre, Eduardo},
}