Title :
Resonant disk turnstile
Author :
Zimmerman, Robert K., Jr.
Author_Institution :
Arecibo Obs., Puerto Rico
fDate :
9/1/1997 12:00:00 AM
Abstract :
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%
Keywords :
S-matrix theory; circular waveguides; electromagnetic wave polarisation; rectangular waveguides; resonance; waveguide components; waveguide theory; L-band prototype; TE11 mode; circular waveguide; disk TM01 mode; disk TM11 mode; resonant disk turnstile; Bandwidth; Planar waveguides; Polarization; Rectangular waveguides; Reflection; Resonance; Scattering; Transmission line matrix methods; Waveguide junctions; Waveguide transitions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
