发明名称 |
A LINEAR AMPLIFIER ARRANGEMENT |
摘要 |
This invention relates to high power linear amplifiers. A high power linear amplifier is disclosed for communications such as CDMA communication systems. Linear amplifiers as used in communication systems exhibit a linear characteristic where the amplifiers output power increases relative to an input power. After a certain input level, known as a gain saturation point, the amplifier then exhibits non-linear characteristics; the output power increases relatively little with respect to power input. This non-linear region is also known as the saturation region or the gain compression region. In accordance with the invention, there is provided a power amplifier comprising a power amplifier, a feedback circuit and a control element; wherein the feedback circuit receives a sample of the input signal delayed in time and employs phase and amplitude components of both the input signal delayed in time and a feedback signal derived from the output of the power amplifier to drive a control element, which control element determines the signal input to the amplifier whereby the power amplifier can produce an improved linear output.
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申请公布号 |
CA2281317(A1) |
申请公布日期 |
2000.02.27 |
申请号 |
CA19992281317 |
申请日期 |
1999.08.25 |
申请人 |
NORTEL NETWORKS CORPORATION |
发明人 |
WESSEL, DAVID NEAL;MCNICOL, JOHN DUNCAN |
分类号 |
H03F1/32;(IPC1-7):H03F1/32;H03F3/20 |
主分类号 |
H03F1/32 |
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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