Patent · US Expired

Power combiner with harmonic selectivity

US5939939A · kind A · utility

41Cited by

10References

22Claims

0Family size

Assignee

Motorola, Inc. · US

Inventors

Michael P. Gaynor · Crystal Lake, US
John E. Lawrence · Cupertino, US
Ross J. Lahlum · Mount Prospect, US

Key dates

Filing date	Feb 27, 1998
Grant date	Aug 17, 1999
Priority date	—
Expiry date	Feb 27, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH03F3/602
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A power amplifier (517) for amplifying an operating signal includes an amplifier (538), an amplifier (540), and a power combiner (518) with harmonic selectivity. The power combiner (518) includes a transmission line section (541), a transmission line section (545), and a resistor (554). The transmission line section (541) is coupled to an amplifier output of the amplifier (538), and the transmission line section (545) is coupled to an amplifier output of the amplifier (540) and to the transmission line section (541). A capacitor (546) is coupled in parallel to a transmission line section (542) of the transmission line section (541), and a capacitor (548) is coupled in parallel to a transmission line section (544) of the transmission line section (545).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.