| 摘要 |
A logarithmic radio frequency amplifier is disclosed which employs a series of cascaded RF amplifier stages. Each amplifier stage includes a detector for demodulating the output of each amplifier to produce a video signal. A limiter is provided for each detector for limiting the video signal output of each of the detectors. The limited video output from each successive stage is applied to a summing delay line to produce the logarithmic video output at the end of the delay line.
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