Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2006-07-07
2008-10-14
Nguyen, Khanh V (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S302000, C330S310000
Reexamination Certificate
active
07436257
ABSTRACT:
Provided is a power amplifier of a low-power consumption system that has linearity at a peak output power while increasing efficiency in a most frequently used range, and thereby enables a battery to last longer. The power amplifier includes an input impedance matcher for impedance-matching a signal input from the outside; a high-power amplifier and a low-power amplifier for amplifying the signal having passed through the input impedance matcher; an amplification controller controlling the high-power amplifier and low-power amplifier according to the power level of the input signal; an output impedance matcher for impedance-matching the signal amplified by the high-power amplifier and low-power amplifier; and a dynamic voltage supplier for supplying the low-power amplifier with a variable driving voltage. With the constitution set forth above, linearity at peak output power is maintained, and efficiency increases in the most frequently used range, thereby enabling the battery of a handheld to last longer.
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Choi Yun Ho
Hyun Seok Bong
Park Kyung Hwan
Park Min
Park Seong Su
Blakely , Sokoloff, Taylor & Zafman LLP
Electronics and Telecommunications Research Institute
Nguyen Khanh V
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