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:
Jul. 10, 2001
Filed:
Aug. 10, 1999
Applicant:
Inventors:
Daisy L. Ingram, Cerritos, CA (US);
Huan-Chun Yen, Torrance, CA (US);
Yaochung Chen, Rancho Palos Verdes, CA (US);
Assignee:
TRW Inc., Redondo Beach, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 3/08 ; H01P 5/12 ; H03F 3/213 ; H03F 3/60 ; H03H 7/38 ;
U.S. Cl.
CPC ...
H01P 3/08 ; H01P 5/12 ; H03F 3/213 ; H03F 3/60 ; H03H 7/38 ;
Abstract
An umbrella-shaped matching network (,) for matching phase and impedance in a power amplifier (,). The matching network (,) employs rounded corners (,). The rounded corners (,) reduce microwave signal scattering losses, because they are less prone to signal radiation than square corner power combining networks. The matching network (,) includes slits (,) defining separated arms (,). The slits (,) are positioned in such a way that they provide phase and amplitude balance for the signal presented to the amplifiers (,). The slits (,) also prevent current from traveling transversely.