RF antenna coupling structure

Details RF antenna coupling structure RF antenna coupling structure

Filed on

2005-07-19

Date issued

2005-07-19

Examiner

Chen, Shih-Chao (Department: 2821)

Patent Class

Communications: radio wave antennas

SubClass

Antennas

SubSubClass

With coupling network or impedance in the leadin

Other Related Categories

C343S7000MS, C343S749000, C343S750000, C343S822000, C343S860000, C455S333000, C455S552100, C455S292000, C455S252100

Type

Reexamination Certificate

Status

active

Patent number

06919858

Description

ABSTRACT:
An RF antenna coupling structure includes a first transformer, a second transformer, and a transformer balun. The first transformer includes a primary winding and a secondary winding, wherein the primary winding of the first transformer is operably coupled to a power amplifier, and wherein the secondary winding of the first transformer has a desired output impedance corresponding to the operational needs of the power amplifier. The second transformer includes a primary winding and a secondary winding, wherein the primary winding of the second transformer is operably coupled to a low noise amplifier, and wherein the secondary winding of the second transformer has a desired output impedance corresponding to the needs of the low noise amplifier. The transformer balun includes a differential winding and a single-ended winding, wherein the differential winding is operably coupled to the secondary windings of the first and second transformers and the single-ended winding is operably coupled to an antenna.

REFERENCES:
patent: 5093667 (1992-03-01), Andricos
patent: 6577189 (2003-06-01), Jayaraman et al.
patent: 6630899 (2003-10-01), Jayaraman
patent: 6721544 (2004-04-01), Franca-Neto
patent: 6798288 (2004-09-01), Jayaraman et al.
patent: 6798314 (2004-09-01), Nation
patent: 2003/0043078 (2003-03-01), Deng et al.
patent: 2003/0124987 (2003-07-01), Shimada et al.

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