voltage tunable input filter for a 440MHz receiver
时间：04-08
整理：3721RD
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Hi,
Does anyone know how to buid a tunable input filter for a 440MHz receiver?
I need it to be as narrow band as possible (1MHz will do) and tuned over the frequency range of 400MHz-440MHz (voltage tuned). and pass band attenuation as small as possible (and the filter as small as possible).
Thanks
Does anyone know how to buid a tunable input filter for a 440MHz receiver?
I need it to be as narrow band as possible (1MHz will do) and tuned over the frequency range of 400MHz-440MHz (voltage tuned). and pass band attenuation as small as possible (and the filter as small as possible).
Thanks
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