Multi-primary and distributed secondary transformer for...

Details Multi-primary and distributed secondary transformer for... Multi-primary and distributed secondary transformer for...

2011-05-10

2011-05-10

Mai, Anh T (Department: 2832)

Inductor devices

Winding formed of plural coils

C336S182000, C336S184000

Reexamination Certificate

active

07940152

ABSTRACT:
A multi-primary and distributed transformer is provided for one or more sets of parallel-connected or series-connected power amplifiers. The transformer may include a plurality of primary windings, including a first primary winding, a second primary winding, a third primary winding, and a fourth primary winding, where each of the plurality of primary windings is not directly connected to any other of the plurality of primary windings, where each primary winding includes a respective positive port and a negative port for receiving respective differential signals, where each primary winding include a respective first number of turns; and a single secondary winding having a plurality of segments, including a first segment and a second segment, where each segment includes a second number of turns, the second number of turns greater than or equal to the respective first number of turns, where the single secondary winding includes at least one output port.

REFERENCES:
patent: 3172034 (1965-03-01), Hilker
patent: 6548966 (2003-04-01), Kawasaka et al.
patent: 7289338 (2007-10-01), Kawasaki et al.
patent: 7400708 (2008-07-01), Takahashi et al.
patent: 2003/0137382 (2003-07-01), Mayfield et al.
patent: 2006/0049903 (2006-03-01), Wolfgram

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