Aeronutronic Ford Corporation

James V Rootsey

A three-port transducer has as a first port a waveguide capable of supporting transverse electric waves of any polarization. The waveguide is divided into three sections by means of a pair of tapered septums which taper in opposing directions. The width of the inner section of the three is made equal to the combined widths of the other two and is coupled to a rectangular waveguide which comprises a second transducer port. The two outer sections are coupled together to a second rectangular waveguide which comprises a third transducer port. The polarization of a signal applied to the first port will determine the amplitude and phase of the signals at the second and third ports.

Dual septum waveguide transducer

A tapered septum in a square waveguide transduces it into a pair of rectangular waveguides. The output waveguides will be excited as a function of the polarization of the signals present in the square waveguide. The septum has a special shape that includes a tapered portion and a transverse portion proportioned to maximize the transducer bandwidth and minimize reflected power.

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Sunnyvale, CA, United States of America

James V Rootsey