RF modulator is used for this purpose. For the United States market, channel 3/4 RF modulator is needed.
对于美国市场,用于3、4频道的射频调制器是必须的。
参考来源 - NTSC数字RF调制器的IP设计与验证·2,447,543篇论文数据,部分数据来源于NoteExpress
The modulator tube diverts current from the RF amplifier.
调制管转移射频放大器中的电流。
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;
The I/Q modulator is used for receiving the added baseband signal, and converting it to RF signal.
频谱分析模块用于根据射 频信号所存在的直流偏量输出能量变化值。
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