Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Reexamination Certificate
2008-04-29
2011-11-22
Hannon, Christian (Department: 2618)
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
C455S110000, C455S118000
Reexamination Certificate
active
08064856
ABSTRACT:
A power amplifier includes a baseband modulator configured to receive a baseband amplitude component and generate a baseband modulated pulse string, an oscillator configured to receive a baseband phase component and generate phase modulated complex carrier signals, a complex up-converter configured to receive and mix the baseband modulated pulse string with the phase modulated complex carrier signals into mixed product signals, and two or more switched mode power amplifiers coupled to the complex up-converter, configured to amplify and switch the mixed product signals at the carrier frequency. The power amplifier further comprises complex filters individually coupled to one of the switch mode power amplifiers, configured to suppress image components in the amplified and switched mixed product signals, and a power combiner coupled to the two or more complex filters, configured to combine the real component of the complex filtered and amplified mixed product signals to generate an RF transmission signal.
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Singerl Peter
Wiesbauer Andreas
Eschweiler & Associates LLC
Hannon Christian
Infineon - Technologies AG
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