Circuits and methods for implementing power amplifiers for...

Details Circuits and methods for implementing power amplifiers for... Circuits and methods for implementing power amplifiers for...

2007-04-03

2007-04-03

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S302000

Reexamination Certificate

active

11131534

ABSTRACT:
Circuits and methods are provided for implementing highly efficient switch-mode power amplifiers using BJTs (bipolar junction transistors) as active switching devices at millimeter-wave frequencies. More specifically, circuits and methods are provided for driving power amplifiers with BJT switching devices to achieve highly efficient switch-mode (e.g., Class E) operation at millimeter wave frequencies (e.g., 60 GHz).

REFERENCES:
patent: 3919656 (1975-11-01), Sokal et al.
patent: 5341109 (1994-08-01), Ryat
patent: 6388512 (2002-05-01), Sims, III
patent: 6771128 (2004-08-01), Yamashita et al.
patent: 7023279 (2006-04-01), Grasset et al.
patent: 2004/0008082 (2004-01-01), Dow

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