| 摘要 |
A compact narrow band interference suppressor. The narrow band interference suppressor includes a plurality of interference signal elimination circuits, a frequency compensation circuit, an AGC amp, and an AD converter that are connected in series. Each interference signal elimination circuit includes a mixer for synthesizing a local oscillation signal of a variable frequency oscillator to eliminate an interference signal with a band elimination filter. The frequency compensation circuit includes a mixer for synthesizing a signal having a frequency generated by the variable frequency oscillator to restore the signal to the frequency band of the signal input to the narrow band interference suppressor by the variable frequency oscillator. The AD converter converts the polarity of the signal in accordance with the number of times the signal passes through the mixer.
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