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Resonant disk turnstile

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1 Author(s)
Zimmerman, R.K., Jr. ; Arecibo Obs., Puerto Rico

In this paper, the resonant disk turnstile is introduced and analyzed. The disk turnstile differs from Dicke's full-waveguide turnstile in that four of the six ports are coaxial cable ports, yielding a much more compact turnstile, which is easier to construct. The disk turnstile operation is explained as a superposition of the disk TM01 mode (nonradiating) and the disk TM11 mode which couples directly to the circular waveguide (dominant) TE11 mode. A useful operating fractional bandwidth of 3% is possible as compared to a Dicke turnstile bandwidth of about 6%

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:45 ,  Issue: 9 )