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:
Dec. 13, 1983
Filed:
Jan. 19, 1981
Shinobu J Hamada, Ranch Palos Verdes, CA (US);
Taro Yodokawa, La Palma, CA (US);
TRW Inc., Redondo Beach, CA (US);
Abstract
a tri-mode coupler (80) for developing from a received signal including three waveguide propagation modes the three tracking signals (i.e. sum signal, elevation signal, and azimuth signal) used in a high-frequency monopulse tracking system and for transmitting a signal at a different frequency, the coupler comprises broadband means such as a two-arm turnstile junction (84) coupling a first circular waveguide section (82) to an E-plane folded hybrid junction (90) for separating out one waveguide mode of the received signal and receiving the signal to be transmitted, and a second circular waveguide section (86) of smaller diameter than the first waveguide section and coupling the latter section to an additional E-plane folded hybrid junction (88) for separating out the two additional waveguide modes of the received signal.