Variable intermediate bandwidth AM receiver
作者： Kazuo Shiojima
DOI:
关键词: Field strength 、 Bandwidth (signal processing) 、 Power bandwidth 、 Optics 、 Amplifier 、 Narrow band 、 Intermediate frequency 、 Physics 、 Electronic engineering 、 Direct-coupled amplifier 、 Wide band
摘要: There is provided an AM receiver in which the bandwidth of intermediate frequency amplifier continuously varied accordance with received field strength. This includes a combining circuit for first detection output A from narrow band and second B wide to produce signal A(1-a M )+a (where, 0≦a ≦1). By varying coefficient , can be equivalently between band.
lens.org 参考文章(3)
Tetsuo Takahashi, Bandwidth switching circuit for intermediate frequency amplifier stage in FM receiver ,(1976)
Takeshi Yokota, Yoichi Eguchi, Radio receiver with bandwidth switching ,(1978)
James R Day, Frequency modulation receiver ,(1959)