Apparatus for radio telecommunication system and method of...

Details Apparatus for radio telecommunication system and method of... Apparatus for radio telecommunication system and method of...

2008-04-29

2008-04-29

Vo, Nguyen T. (Department: 2618)

Telecommunications

Transmitter

With feedback of modulated output signal

C455S127200

Reexamination Certificate

active

11730585

ABSTRACT:
A polar loop based radio telecommunication apparatus which has a phase control loop for controlling the phase of a carrier outputted from an oscillator for transmitter, and an amplitude control loop for controlling the amplitude of a transmission output signal outputted from a power amplifier circuit, wherein precharge means is provided on a forward path from a current source, through the power amplifier circuit, to a detection circuit, forming the amplitude control loop, for rapidly increasing a control voltage for the power amplifier circuit to a power threshold upon starting transmission.

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