发明名称 |
Systems and methods for converting a stream of complex numbers into an amplitude and phase-modulated radio power signal |
摘要 |
A stream of complex numbers is converted into polar form, including an amplitude-representative part and a phase-representative part. The amplitude-representative part of each of the converted complex numbers is represented as a plurality of digits of decreasing numerical significance. The phase-representative part of each of the converted complex numbers is phase-modulated at the radio carrier frequency to produce a phase-modulated drive signal. The phase-modulated drive signal is amplified in a plurality of power amplifiers. A respective one of the power amplifiers provides a maximum output power level at a respective amplifier output that is related to a respective one of the decreasing numerical significance. The output amplitude of a respective one of the plurality of power amplifiers is controlled by applying a respective one of the plurality of digits of decreasing numerical significance to a respective one of the plurality of power amplifiers. The amplifier outputs of the plurality of power amplifiers are combined to form the modulated radio power signal.
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申请公布号 |
US6411655(B1) |
申请公布日期 |
2002.06.25 |
申请号 |
US19980216466 |
申请日期 |
1998.12.18 |
申请人 |
ERICSSON INC. |
发明人 |
HOLDEN ALAN R.;DENT PAUL W.;CAMP, JR. WILLIAM O. |
分类号 |
H04L27/36;(IPC1-7):H03C1/00 |
主分类号 |
H04L27/36 |
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