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公开(公告)号：KR1019940003768B1
公开(公告)日：1994-04-30
申请号：KR1019910013960
申请日：1991-08-13
Applicant: 한국표준과학연구원
IPC: H04B7/155
Abstract: The cosmic ray receiver is for receiving cosmic rays of 40 HGz band. The receiver includes a first mixer (5) for converting cosmic ray into intermediate frequency, a first and a second amplifier (7,9) for amplifying the intermediate frequency signal, a bandpass filter (11) for filtering the amplified intermediate frequency signal, a third amplifier (13) for amplifying output signal of the bandpass filter, an oscillation frequency selector (29) for generating local oscillation frequency according to DC bias voltage, a counter (23) for detecting frequency difference between the local oscillation frequency and the signal to be locked, and a GUNN modulator (27) for feeding output voltage of the counter back to the oscillation frequency selector (29).
Abstract translation: 宇宙射线接收器用于接收40HGz波段的宇宙射线。 接收机包括用于将宇宙射线转换为中频的第一混频器（5），用于放大中频信号的第一和第二放大器（7,9），用于对放大的中频信号进行滤波的带通滤波器（11） 用于放大带通滤波器的输出信号的第三放大器（13），用于根据直流偏置电压产生本地振荡频率的振荡频率选择器（29），用于检测本地振荡频率与信号之间的频率差的计数器 被锁定，以及用于将计数器的输出电压反馈回振荡频率选择器（G）的GUN调制器（27）。
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