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信号-频率电路及锁相电路到目前为止,我们介绍的三单元电路都是在10.7MHz上接收和发射信号。在本文的第一部分,图1示出改进了的在载频上发射和接收的五单元电路。
Signal - Frequency Circuits and Phase-Locked Circuits So far, the three-cell circuits we have described all receive and transmit at 10.7 MHz. In the first part of this article, Figure 1 shows an improved five-cell circuit for transmitting and receiving on a carrier frequency.