The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 1979
Filed:
Jul. 14, 1978
David F Bowman, Moorestown, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A ridged rectangular launching waveguide and a ridged rectangular radiating waveguide have a common length-wise wall comprised of wall segments. A wave launched at the proximal end of the launching waveguide is coupled to the radiating waveguide through passageways between the segments. A cylindrical metal rod extends through a segment to the wavepaths of the waveguides. Additionally, the ridges of the waveguides have similar notches near the rod, the rod and the notches forming similar attenuators in the wavepaths. The passageways result in a formation of a pair of three-db, ninety-degree hybrids connected back-to-back through the attenuators. The hybrids and the attenuators couple a predetermined percentage of the energy of the wave to a radiating slot in a panel at the distal end of the radiating waveguide. The remainder of the wave energy is reflected by the attenuators and coupled by the hybrids through the radiating waveguide towards the proximal end thereof.