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:
Aug. 03, 1993
Filed:
Apr. 07, 1992
Applicant:
Inventor:
Steve K Panaretos, Los Angeles, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ; G01S / ;
U.S. Cl.
CPC ...
342379 ; 342153 ;
Abstract
An antenna distribution network for an antenna array which provides independent sum and difference aperture excitations and enables a reduction in the difference channel radiation sidelobe levels. The circuit operates to smooth out the step discontinuity in the complex signal excitation of the radiating aperture in the difference mode by reducing considerably the amplitude of at least two corresponding elements located on opposite sides of the array center. A circuit of four four-port hybrid devices is employed, and introduces no effect when in the sum mode.