... antenna preamplifier 天线前置放大器... microphone preamplifier 话筒前置放大器... preamplifier tuner 前置放大器调谐器...
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TV antenna preamplifier 电视天线预放器
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The function blocks of the low field NMR circuit system are analyzed at first. Then the signal amplitude is calculated. The antenna interface and the preamplifier are studied in detail at last.
本文首先对低场磁共振电路系统的各个功能模块进行了分析,并估算了低场磁共振的信号幅值,然后重点对天线接口和前置放大两个电路模块进行了分析研究。
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