Analogue power control in a saturated amplifier

Details Analogue power control in a saturated amplifier Analogue power control in a saturated amplifier

2005-12-02

2008-03-04

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S255000

Reexamination Certificate

active

07339427

ABSTRACT:
A circuit is disclosed having a first series circuit path including a first switching transistor, a cascode transistor disposed in cascode arrangement with the first switching transistor, a transformer, and a fourth switching transistor. The circuit also has a second series circuit path having a second switching transistor, the transformer, and a third switching transistor. Both the first series circuit path and the second series circuit path are coupled between a first voltage source and a second voltage source. The cascode transistor has a bias applied to a port thereof for limiting current flowing therethrough.

REFERENCES:
patent: 4032851 (1977-06-01), Hoover
patent: 4117415 (1978-09-01), Hoover
patent: 5631595 (1997-05-01), Lakshmikumar
patent: 6432055 (2002-08-01), Carp et al.
patent: 6537216 (2003-03-01), Shifrin
patent: 7068104 (2006-06-01), Burns et al.

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