发明名称 |
DYNAMIC ALLOCATION OF POWER SUPPLIED BY A POWER SUPPLY AND FREQUENCY AGILE SPECTRAL FILTERING OF SIGNALS |
摘要 |
The power voltage supply for a power amplifier is switched between an operational full power mode and a reduced power mode by the switching of a dual state impedance device connected in series between the power amplifier and the power supply. A control circuit detects the level of a signal to be amplified by that amplifier and switches the impedance states thus reducing the power output capability of the power amplifier and placing the power amplifier into a reduced power mode. In one embodiment, the signal is produced by spectrally filtering with a low pass filter, with the cross-over frequency being adjustable. Additionally, the gain of the amplifier can be reduced for high level signals. |
申请公布号 |
WO0249211(A3) |
申请公布日期 |
2003.09.18 |
申请号 |
WO2001US46702 |
申请日期 |
2001.12.05 |
申请人 |
THOMSON LICENSING S.A.;CALDWELL, ROCKY |
发明人 |
CALDWELL, ROCKY |
分类号 |
H04R3/00;H03F1/02;H03F3/181;H03F3/20;H04S5/02 |
主分类号 |
H04R3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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