Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-09-12
2006-09-12
Tran, Pablo N. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S091000, C455S127200, C455S234100, C455S240100, C455S245100, C455S249100, C455S247100
Reexamination Certificate
active
07107030
ABSTRACT:
A transmitter for a portable radio communication apparatus comprising a modulator having first port for inputting a baseband signal and a second port for inputting a local oscillator signal, and including means for rectifying the input local oscillator signal to provide a conductance waveform at a multiple of the local oscillator signal, and means for mixing the baseband signal with the conductance waveform at said multiple of the local oscillator signal frequency for up-converting the baseband signal to a radio frequency modulated carrier, the transmitter including means for controlling the gain of the modulator thereby to control the output level of the modulator.
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Harrington & Smith ,LLP
Nokia Mobile Phones Limited
Tran Pablo N.
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