DocumentCode :
913725
Title :
A Variable Directional Coupler Using InSb Thin Films (Short Papers)
Author :
Tanaka, Ikuo ; Ohshita, Masahide
Volume :
24
Issue :
10
fYear :
1976
fDate :
10/1/1976 12:00:00 AM
Firstpage :
660
Lastpage :
662
Abstract :
A variable directional coupler whose coupling is varied by an applied dc magnetic field is presented in this short paper. The directional coupler is of the two-hole type having InSb thin films in the coupling apertures to which the magnetic field is applied perpendicularly. The directional coupler was tested at room temperature at frequencies from 32 to 36 GHz. At a frequency of 33.1 GHz and magnetic flux densities of up to 13 kG, the coupling varies from 14.2 to 40.2 dB with the directivity exceeding 24.6 dB, the insertion loss of about 1 dB, and the VSWR of 1.2.
Keywords :
Apertures; Couplings; Directional couplers; Frequency; Magnetic fields; Magnetic films; Magnetic flux density; Temperature; Testing; Transistors;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.1976.1128933
Filename :
1128933
Link To Document :
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