发明名称 |
DISTORTION COMPENSATION FOR A MICROWAVE AMPLIFIER |
摘要 |
<p>DISTORTION COMPENSATION FOR A MICROWAVE AMPLIFIER Amplifier-produced distortion known as amplitude modulation to phase modulation (AM/PM) conversion is reduced through the use of GaAs FETs which are biased to generate AM/PM having an algebraic sign opposite to that generated by the amplifier. This algebraic sign reversal is accomplished by biasing the GaAs FETs so that a DC drain current ? 75% and ? 10% of the short-circuit drain current is established. In the disclosed embodiment, several GaAs FETs are cascaded in alternation with attenuators to increase the magnitude of the compensating AM/PM conversion without generating substantial amplitude modulation to amplitude modulation (AM/AM) conversion.</p> |
申请公布号 |
CA1201492(A) |
申请公布日期 |
1986.03.04 |
申请号 |
CA19840468927 |
申请日期 |
1984.11.29 |
申请人 |
AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
发明人 |
GREEN, DONALD R., JR.;MOFFATT, JAMES P. |
分类号 |
H03C3/38;H03F1/30;H03F1/32;H03F3/60;(IPC1-7):H03F1/32 |
主分类号 |
H03C3/38 |
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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