直接调制 meaning in English
direct modulation
Examples
- In this paper , direct modulation technology working at microwave band is researched
本文研究的是微波波段的直接调制技术。 - Laser diode is the most important laser in practice , it can be modulated by the current directly
摘要半导体激光器是实用中最重要的一类激光器，它具有可直接调制的特点。 - The transmitter adopt qam modulation mode , which is a directly modulation upper frequency conversion mode , which could afford more high bit rate transmission in the same bandwidth compared to other modulation mode
发射机采用数字式调制方式,即qam直接调制上变频方式,相对于其它调制方式可以实现在相同带宽下的高码率传输。 - 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。 - In high - speed direct optical modulation of laser diodes , the frequency chirp of the modulated signal cannot be eliminated . then the optical external modulators play more and more important role in large capacity optical transmission systems , and have become a subject of intense study
在高速光调制中，直接调制引起的啁啾噪声难以克服，光外调制器在大容量光纤传输系统中，扮演着越来越重要的角色，成为当前的研究热点。