English translation for "宽带匹配"
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- wideband matching
Related Translations:
宽带档: wideband frequency modulation 宽带变压器: wide-band transformer 宽带因特网: broadband internet 宽带处理单元: bpu broadband processing unit 宽带阻塞干扰: wide-band barrage jamming
- Example Sentences:
| 1. | A 1 / 10 - scale model quasi - fractal rcl - loaded monopole antenna was fabricated and measured , which has a bandwidth ratio of about 10 : 1 , with vswr less than 3 . 0 , calculated system gain greater than - 9 . 4db and the efficiency above 14 %
加入宽带匹配网络后,对其10 : 1的缩比模型天线进行了测试,在全频率段内驻波系数小于3 ,理论增益大于- 9 . 4db ,效率大于14 % 。 | | 2. | Then , lump loading is used to enhance the valid height of the antennas , as a result the input impedance of the monopole antenna undergoes gently variation with frequency , and consequently it is easy to match by wideband matching network
加载后,输入阻抗变化得到减缓,这是能够使用宽带匹配网络进行宽带匹配的前提,经过宽带匹配达到了天线小型化和宽带化的设计目的。 | | 3. | Broadband matching is very difficult , but we can make it easier with negative feedback and balanced amplifier . so at first we should choose a project , then according to the requirement of the low noise amplifier to choose the transistor , bias and matching
宽带匹配网络的设计是一个难点,可以采用负反馈、平衡电路等形式降低宽带匹配的难度,所以宽带电路的设计首先是方案设计。 | | 4. | The main contributions are as follows : ( 1 ) de ( differential evolution ) algorithm is proposed to invert the ocean acoustic parameters in shallow water in order to get faster and more accurate results than ga ( genetic algorithm ) and sa ( simulated annealing algorithm ) . also a posteriori probability analysis method is applied to evaluate the uncertainty of inversion results . ( 2 ) maximum likelihood objective functions for broadband mfi are derived according to different conditions
( 2 )根据不同的前提条件，采用似然比的方法推导了宽带匹配场反演的最大似然目标函数；深入地研究了宽带匹配场处理中的相干与非相干问题；在分析参数反演的敏感性之后，提出了浅海环境参数宽带匹配场反演的多步优化策略，并与全参数反演方法进行了性能上的仿真比较。 | | 5. | The principle of power amplifier is introduced at first in this paper , especially its nonlinearity characteristic under the condition of large signal . subsequently linearization technology such as power - retreat , negative feedback , pre - distortion and feed - forward are discussed . and then broadband matching technology is introduced . at last , the scheme of subject , the functional realization of each module , some questions which must be pay much attention in the system design , and the ultimate testing result of this subject is represented and analyzed in detail
本文首先介绍了线性功率放大器工作原理，尤其是在大信号条件下，它的非线性特征，这是设计线性功放必备的基础；接着介绍了当今一些前沿的功放线性化方法，例如预失真和前馈技术；然后详细讨论了宽带匹配技术，特别是传输线变压器的原理和应用，这是因为传输线变压器在本课题中扮演了重要的角色；最后具体叙述了本课题采用的方案、各个模块的功能的实现、实际设计应注意的问题。 | | 6. | The spot responder system which is the necessary part of ctcs is analyzed in the dissertation and three key technologies of the channel in the responder system are researched . firstly , a new kind of rectangular plate magnetic inductive loop antenna is designed to transmit the power frequency . researching the near field inter - inductive characters , the relationship among the inductive efficiency , the perimeter and the conductor width of the antenna is found out
本文在对ctcs中的点式应答器系统原理及组成进行分析和消化的基础上,对系统中信道的几个关键技术进行了详尽的研究,主要分为三个方面: 1 ,提出并研制了新型的片式环形磁感应天线,并对传输能量载波的天线的近场互感特性进行了分析,得到互感效率随天线的周长大小以及导带宽度的变化规律,并通过计算机仿真和试验对天线的近场波瓣图进行了研究;通过分析宽带匹配技术中的实频法理论,设计了信号载波天线的宽带匹配网络。 | | 7. | This subject aim at designing a linear power amplifer whose output power is 40w for 225 - 450mhz band . but it seems not easy to finish the task because of this power amplifier own unique requirements including high output power , broad working frequency band , high linearity , and flat gain . due to the complexity involved , theoretically several soltuions are derived in the final scheme such as broadband matching technology , power - retreat , power synthesize , automatic power control and negative feedback . in addition , the design will be optimized by eda software and the final test result indicates that our design is successful
本课题的目标是研制一个输出功率为40w的225 450mhz的线性功率放大器。由于该功放要求输出功率大，工作频带宽，带内增益波动小，线性度高，所以其终合设计难度大。鉴于这个原因，在理论设计上笔者采用了宽带匹配、功率合成、功率回退、负反馈、自动功率控制等技术；在实践中精心设计电路，并且配合eda软件仿真，最终达到所要求的指标。 |
- Similar Words：
- "宽带猫" English translation, "宽带内插法" English translation, "宽带内载波接口" English translation, "宽带偶极" English translation, "宽带偶极子" English translation, "宽带频率调制" English translation, "宽带频率计" English translation, "宽带频谱" English translation, "宽带频谱仪" English translation, "宽带平方率放大器" English translation
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