Title: Wide-band microwave circulator

Abstract: A planar Y-junction microwave circulator formed by depositing on a ferrite substrate a metallization pattern consisting of a central resonant disc and three transmission line ports radially extending from the periphery of the disc at junctions spaced apart by 120.degree.. The transmission characteristics of the circulator are controlled by a DC magnetic field which biases the ferrite. Wide-band operation on the order of one octave is achieved by using larger port coupling angles and a smaller disc radius than are conventionally used.

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Other info:

Inventors: Rosenbaum, Fred J. (Clayton, MO, US)
Wu, You-Sun (Richardson, TX, US)

Application Number: 476234
Filing Date: 1974-06-04
Publication_date: 1976-01-27
Assignee: The Washington University (St. Louis, MO)
Primary Class(es): 333/1.1 333/24.2
Other Classes:
US Patent Ref:

3753156	Aug, 1973	Miura et al.	333/1.
3758878	Sep, 1973	Wainwright	333/1.

Other Refs:
Primary Examiner: Gensler, Paul L.
Assistant Examiner:
Attorney: Sughrue, Rothwell, Mion, Zinn & Macpeak