| 释义 |
superheterodyne 超外差式 In radio communications, a method of reception in which the frequency of received signal is changed to an intermediate frequency, by a heterodyne process involving a local oscillator. This technique simplifies the design of subsequent amplification stages. 在无线电通信技术中,将接收信号的频率通过采用本地振荡器的外差法变成某个中频的一种接收方法。这一技术可以简化后面 的放大级的设计。 |