发明名称 |
FEEDFORWARD AMPLIFICATION SYSTEM HAVING MASK DETECTION COMPENSATION |
摘要 |
A method and apparatus for reducing out-of-band frequency components of an RF amplified input signal, the amplified signal having both in-band frequency components and out-of-band frequency components, employ a feedforward network in which a microprocessor can sweep a frequency generator output connected to a mixer, the other input of the mixer being the amplified output, to find the carrier frequency of the input signal, and thereafter modify or control the feedforward circuit to reduce out-of-band frequency component energies in a particular manner. For example, gain and phase of a variable gain-phase network in a feedforward circuit structure can be modified for reducing the out-of-band frequency component energy.
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申请公布号 |
CA2286531(A1) |
申请公布日期 |
2000.04.19 |
申请号 |
CA19992286531 |
申请日期 |
1999.10.18 |
申请人 |
POWERWAVE TECHNOLOGIES, INC. |
发明人 |
PATEL, SANDIP;KIM, KWANG;ROBERTS, WAYNE;POSNER, RICHARD D.;KLEIN, STEFAN;SHIN, DO B. |
分类号 |
H03F1/32;(IPC1-7):H03F1/32;H03F1/02 |
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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