Radio frequency signal amplifying device

Details Radio frequency signal amplifying device Radio frequency signal amplifying device

2008-06-13

2009-12-01

Pascal, Robert (Department: 2817)

Amplifiers

With plural amplifier channels

Redundant amplifier circuits

C330S295000, C330S301000

Reexamination Certificate

active

07626454

ABSTRACT:
There is provided a radio frequency (RF) signal amplifying device consuming less power and operable at a high voltage in a PA driving amplifying apparatus applicable to a PA amplifying circuit which amplifies power of an RF signal. The RF signal amplifying device includes: a balun converting an unbalanced radio frequency signal into a balanced radio frequency signal; a primary amplifier differentially amplifying the balanced radio frequency signal from the balun; and at least one secondary amplifier secondarily and differentially amplifying the balanced radio frequency signal amplified from the primary amplifier.

REFERENCES:
patent: 5602508 (1997-02-01), Endou et al.
patent: 5900781 (1999-05-01), Igarashi et al.
patent: 6114907 (2000-09-01), Sakurai
patent: 6670848 (2003-12-01), Fanous et al.
patent: 10-0157677 (1998-12-01), None
patent: 10-0248886 (2000-03-01), None
Korean Intellectual Property Office, Office Action mailed May 29, 2008.

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