English translation for "直接调制"
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- direct modulation
Related Translations:
调制: mingle; toss; lard; [电子学] modulate; concoction; modulation 短语和例子振幅调制 amplitude modulation; 音频调制 audio modulation 调制调制器: modulationmodulator
- Example Sentences:
| 1. | 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。 | | 2. | 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。 | | 3. | 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。 | | 4. | 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。 | | 5. | 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。 | | 6. | At present , signal pulses produced by directly modulated laser diodes have been used in optical fiber communication systems . the experiment reveals that the optical pulses from directly modulated laser diodes are far from gaussian and have near - rectangular temporal profiles with much sharper leading and trailing edges , and then a super - gaussian model , which assumes that an incident optical pulse has a super - gaussian profile , may be more suitable
但在实际的光通信系统中，人们常采用由直接调制半导体激光器产生的光脉冲作为信号脉冲，而实验结果表明这种脉冲具有比高斯脉冲更为陡峭的前沿和后沿，其脉冲形状更接近于超高斯分布，并且通常还带有一定量的啁啾。 | | 7. | Laser diode ( ld ) has the advantages of small volume , light weight , longevity of service , high electro - optic convert efficiency and direct modulate etc . now it is more widely used in the fields of information , energy , therapeutic , material , entrainment and so on
半导体激光器(以下简称ld )具有体积小、重量轻、寿命长、电光转换效率高、可直接调制等优点,目前在信息、能源、医疗、材料、娱乐等诸多领域都得到了越来越广泛的应用,材料和器件的水平也有了长足的进展。 | | 8. | The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band . firstly , this paper clarifies the theory of i / q modulation , elaborates evm and acpl , and analyzes the effect of amplitude and phase unbalance and dc offset on evm . secondly we review the basic principle of phase locked loop and it ’ s composing parts , including the basic conception and design method of pll frequency synthesizer , especially introduce the charge pump pll frequency synthesizer in detail
首先,在阐述i / q正交调制基本原理的基础上,通过对误差矢量和邻近信道功率泄漏的详细分析,定性、定量地讨论了各种非理想电路因素(如相位不平衡、幅度不平衡、直流偏差等)对调制器性能的影响;其次,介绍了锁相环的工作原理和基本组成部分,包括锁相环的设计和环路滤波器的设计,特别详述了电荷泵锁相频率源;第三,介绍了采用直接调制技术模拟卫星信号的射频前端的设计;最后,对整个直接射频调制系统进行测试,结果基本上达到了课题要求。 |
- Similar Words：
- "直接调控" English translation, "直接调控方式向" English translation, "直接调频" English translation, "直接调频制" English translation, "直接调整" English translation, "直接调制方式" English translation, "直接调制技术" English translation, "直接顶" English translation, "直接顶板" English translation, "直接顶初次垮落" English translation
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