Employing a bigrid EFT, the modulator circuit in the rf head is designed for rf level control.
在高频头中的射频电平调节电路中使用了双栅极场效应管；
This paper introduces the operational principle, the typical modulator circuit and the active control components of I Q vector modulator.
基于矢量调制法原理，介绍了一套寻北仪设计方案，并详细叙述了该仪器的物理实现方法和算法原理。
Using the MC1596, a monolithic balanced modulator circuit, to design the transmitting and receiving terminal, and complete the realization of the terminal hardwire.
利用双平衡模拟乘法器芯片MC1596，设计了正交复用方案的收发终端，并完成了终端的硬件的具体实现。
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