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:
Jun. 16, 2015
Filed:
Aug. 23, 2013
Macdonald, Dettwiler and Associates Corporation, Ste-Anne-de-Bellevue, CA;
Jaroslaw Uher, Pointe-Claire, CA;
MACDONALD, DETTWILWE AND ASSOCIATES CORPORATION, Ste-Anne-de-Bellevue, Quebec, CA;
Abstract
An advanced reverse orthomode junction feed assembly with associated filters for use in an antenna feed system for transmitting a first low frequency (LF) electromagnetic signal and receiving a second high frequency (HF) electromagnetic signal. The assembly includes, in a preferred square waveguide topology, an orthomode junction with an antenna port for connecting to a choking iris matching section and an antenna feed, an opposed generally coaxial first signal port to transmit the LF signal, and a generally perpendicular second signal port, located there between, to receive the HF signal. A first signal channel having fully asymmetric on-axis second signal reject filters connects to the first port; and a second signal channel having cross-axis first signal reject filters with multi-cavity HF path matching assembly connects to the second port. The use of a magic-tee as a combiner for the receive signal provides tracking capability to the antenna feed system.