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. 10, 2003
Filed:
Oct. 05, 2001
Vladimir Volman, Newtown, PA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A coupler couples signal by way of a cluster of four square waveguide ports at a high frequency band, or by way of a two ridged waveguide ports at a lower frequency band, to a common square port. The coupling path includes a branch coupler for combining the TE and TE high-band signals from the square ports with the TE low-band signals from the two ridged ports. The branch coupler is coupled to a mode converter or transformer, which allows the TE and TE mode signals to pass through unchanged, and which converts the TE mode signals from the two ridged ports to TE , TE in a square port. A ridged square waveguide section couples the square port of the mode converter to the common square port. The ridged square waveguide section includes ridges and phase shifters which delay components of the high-band modes to produce TE and TE modes at the common port in both bands.