Portable communication device having adjustable amplification and method therefor
First Claim
Patent Images
1. A method of adjusting transmission power level of a portable communication device comprising:
- performing a scalar analog comparison of a modulated input signal to an amplifier with an output signal of the amplifier;
generating an analog output signal without any digitized processing, the analog output signal based on the comparison; and
adjusting only a magnitude but not phase of an input signal to the amplifier by predistorting then modulating the input signal, wherein adjusting is based on the analog output signal.
1 Assignment
0 Petitions
Accused Products
Abstract
Briefly, in accordance with one embodiment of the invention, a portable communication device comprises an amplifier having an input signal and an output signal. The amplitude of the input signal may be compared to the amplitude of the output signal and an appropriate analog signal may be generated to adjust the ratio of the input signal to the output signal.
-
Citations
15 Claims
-
1. A method of adjusting transmission power level of a portable communication device comprising:
-
performing a scalar analog comparison of a modulated input signal to an amplifier with an output signal of the amplifier; generating an analog output signal without any digitized processing, the analog output signal based on the comparison; and adjusting only a magnitude but not phase of an input signal to the amplifier by predistorting then modulating the input signal, wherein adjusting is based on the analog output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A portable communication device comprising:
-
an amplifier to receive a modulated input signal and provide an output signal; and a control circuit coupled to the amplifier to perform a scalar analog comparison of the amplitude of the modulated input signal to the output signal and output an analog control signal, wherein the portable communication device is adapted to perform only amplitude predistortion of an input signal prior to a modulator, and wherein the amplitude predistortion of the input signal is based on the analog control signal. - View Dependent Claims (13, 14, 15)
-
Specification