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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.:

US 4570134 B1

PDFFull Text
Date of Patent:
Feb. 11, 1986

Filed:

Apr. 19, 1984

Compact hybrid providing quadrature phase relation between two outputs

Applicant:
Inventor:

Oakley M Woodward, Princeton, NJ (US);

Assignee:

RCA Corporation, Princeton, NJ (US);

Attorneys:

Whitacre; E. M.

Irlbeck; D. H.

Magee; T. H.

Primary Examiner:

Paul Gensler

Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333123 ; 333127 ;
Abstract

A hybrid uses stubs to provide 90 degrees of phase shift between output lines for feeding a circularly polarized antenna. Capacitive and inductive stubs have low and high characteristic impedances for broad bandwidth. The stubs can be located in the output lines for compactness, or in a T-section between an input line and the output lines, for compactness, to minimize undesired phase shift, and for ease of connection. The hybrid can include one quarter wave transformers having a characteristic impedance of geometric mean of the hybrid and antenna for improved axial ratio.

Find Patent Forward Citations

Woodward, Oakley. (1986). Compact hybrid providing quadrature phase relation between two outputs (U.S. Patent No. 4570134). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4570134

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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