Integrated balun and coupler transformer

Details Integrated balun and coupler transformer Integrated balun and coupler transformer

2005-12-01

2010-12-21

Phu, Sanh D (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S330000, C455S333000, C455S191100, C363S044000, C363S017000

Reexamination Certificate

active

07856222

ABSTRACT:
Integrated balun and coupler is described. In one example, a radio frequency (RF) device includes a balun and coupler. The balun includes a first winding and a second winding arranged on a magnetic core. Respective inputs of the first winding and the second winding are configured to receive a balanced RF input and respective outputs of the first winding and the second winding are configured to provide a first unbalanced RF output. The coupler includes a third winding arranged on the magnetic core. The third winding is configured to provide a second unbalanced RF output, where the second unbalanced RF output is a fraction of the first unbalanced RF output.

REFERENCES:
patent: 4707673 (1987-11-01), Lee et al.
patent: 4885747 (1989-12-01), Foglia
patent: 5157786 (1992-10-01), Muterspaugh
patent: 6198644 (2001-03-01), Minamisawa
patent: 6750752 (2004-06-01), Werlau

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