发明名称 |
Device for controlling the amplitude and the phase of a radio frequency signal |
摘要 |
A digital device for controlling the amplitude and the phase of a radio frequency signal includes a variable digital attenuator, a variable digital phase-shifter, and a distributor having one input and two outputs for dividing the radio frequency signal into a first signal part and a second signal part. A digital amplitude control first channel connected to an output of the distributor includes the variable digital attenuator for controlling the amplitude of the first signal part. A digital phase control second channel connected to the other output of the distributor in parallel with the first digital control channel includes the variable digital phase-shifter for controlling the phase of the second signal part. A recombiner has one output and two inputs respectively connected to the outputs of the two digital control channels and recombines the controlled two signal parts. Such devices include predistortion linearizers.
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申请公布号 |
US6172562(B1) |
申请公布日期 |
2001.01.09 |
申请号 |
US19990225508 |
申请日期 |
1999.01.06 |
申请人 |
ALCATEL |
发明人 |
CAZAUX JEAN LOUIS;BARBASTE REGIS;COGO BERNARD |
分类号 |
H03F1/32;(IPC1-7):H03F1/26 |
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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