Amplifiers – With semiconductor amplifying device – Including particular power supply circuitry
Reexamination Certificate
2006-03-16
2008-09-02
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including particular power supply circuitry
C330S296000
Reexamination Certificate
active
07420421
ABSTRACT:
Open-Loop RF Transmitter Output Power Control for Increased Power Efficiency (NC#97507) system includes microprocessor, battery, bias control circuitry, supply control circuitry and power amplifier. Microprocessor receives desired RF output power and battery voltage value and transmits bias control voltage and supply control voltage. Bias control circuitry is operatively coupled to microprocessor and receives bias control voltage and transmits bias output voltage. Supply control circuitry is operatively coupled to battery and microprocessor, and receives battery voltage and supply control voltage, and transmits supply collector voltage. Power amplifier is operatively coupled to supply control circuitry and bias control circuitry via inductor, and receives supply collector voltage and bias output voltage, and transmits RF output signal in response to RF input signal, supply collector voltage and bias output voltage.
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patent: 6122488 (2000-09-01), Leizerovich et al.
patent: 6148220 (2000-11-01), Sharp et al.
patent: 6327462 (2001-12-01), Loke et al.
patent: 6900697 (2005-05-01), Doyle et al.
patent: 2006/0178121 (2006-08-01), Hamalainen et al.
Lie Donald Y. C.
Popp Jeremy Daniel
Anderson J. Eric
Eppele Kyle
Lipovsky Peter A.
Nguyen Hieu P
Pascal Robert
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