DocumentCode
1476006
Title
Measurements of a Cryogenic Linear Polarization Modulator for mm-Wavelengths
Author
Gault, A.C. ; Bierman, E.M. ; Hyland, P.O. ; Keating, B.G. ; Malu, S.S. ; Timbie, P.T.
Author_Institution
Dept. of Phys., Univ. of Wisconsin-Madison, Madison, WI, USA
Volume
22
Issue
4
fYear
2012
fDate
4/1/2012 12:00:00 AM
Firstpage
212
Lastpage
214
Abstract
Cryogenic Faraday phase modulators have been implemented in waveguide and tested in both a constant current mode and an alternating current mode. The loss of the phase shifter for DC currents that results in either a or phase shift is on average 1.45 dB over the entire W-band. In the modulating mode, it operates at frequencies as high as 4 Hz with transition times between the two phase states of 1.32 x 10-2 s.
Keywords
cryogenic electronics; phase modulation; phase shifters; waveguides; DC currents; alternating current mode; constant current mode; cryogenic Faraday phase modulators; cryogenic linear polarization modulator; loss 4 dB; mm-wavelengths; phase shifter loss; transition times; waveguide; Ferrites; Frequency modulation; Phase modulation; Rectangular waveguides; Switches; Temperature measurement; Ferrite devices; modulation; superconducting magnet;
fLanguage
English
Journal_Title
Microwave and Wireless Components Letters, IEEE
Publisher
ieee
ISSN
1531-1309
Type
jour
DOI
10.1109/LMWC.2012.2188622
Filename
6172613
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