次频率 meaning in Chinese
secondary frequency
Examples
- Direct modulator converts baseband signal to rf signal without upconvertion . the system design is relatively simple compared to upconversion . so direct modulator provides adventages of compact size , low cost and low spurious response
直接调制将基带信号直接转换为射频信号,不需要二次频率变换,与上变频方式相比系统结构简单,降低了对滤波器的要求,具有体积小,重量轻,成本低等明显的优点。