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前馈放大器
相关语句
  feedforward amplifier
     A Study on the Robustness of a 10 MHz Bandwidth Feedforward Amplifier at the 880 MHz Band
     对880MHzCDMA频段下10MHz带宽前馈放大器鲁棒性的研究
短句来源
     Analysis of the Suppression Loop of a Feedforward Amplifier
     前馈放大器抑制环路的理论分析
短句来源
     Cancellation performance of a linearization loop of a high efficiency feedforward amplifier
     高效率前馈放大器单环抑制性能
短句来源
     This paper focusing on the disappointments about the disturbance in delay lines which influence the system performance,gives the study on the robustness of a 10 MHz bandwidth feedforward amplifier at 880 MHz band.
     本文所关注的就是前馈技术中路径延时的扰动对整个前馈系统工作性能的影响,探究工作在880MH z CDM A频段下10 MH z带宽前馈放大器的鲁棒性。
短句来源
  feedforward amplifiers
     In order to analyse the performance of suppression nonlinear productions of feedforward amplifiers, the suppression equation of the loop has been established based on the model of a suppression loop. And the function relation between the performance of suppression nonlinear productions and the mismatching of amplitude, phase and delay of the loop has been developed.
     为了便于分析前馈放大器对非线性产物的抑制特性,通过抑制环路模型,建立了环路抑制方程,并由计 算机仿真得到了环路对非线性产物的抑制性能与幅度失配、相位失配及延迟失配的理论数值关系.
短句来源
     A foreign scholar has brought forward some kind of delay mismatch method to improve the efficiency of feedforward amplifiers.
     国外有学者提出了一种延迟线失配法来提高前馈放大器的效率。
短句来源
     In order to observe the effect on cancellation performance of linearization loop of feedforward amplifiers, especially on cancellation performance of error cancellation loop, this article analyzes the method carefully and completely from magnitude error, phase error and delay mismatch, and gets corresponding conclusions.
     为了更全面考察这种方法对于前馈放大器单环抑制性能,尤其是误差环路的抑制性能的影响,从幅度、相位误差以及延迟线失配3个方面进行了仔细全面地分析,并得出了相应的结论。
短句来源
  “前馈放大器”译为未确定词的双语例句
     According as the analysis of third-order inter-modulation of high-power amplifiers, an innovative practical method to adjust the feed-forward amplifier system to optimize the performance of feed-forward amplifier system is described.
     详细分析了高功率放大器的三阶互调产物的特点,并据此创新的提出了调整前馈线性化系统状态,优化前馈放大器性能的正确方法。
短句来源
     At the same time duaMoop feedforward power amplifier is sensitive to the change of working environment(including the temperature, the working frequence, the power, parts of an apparatus aging and voltage of power supply etc.) ,which has a great effect to the stability of performance, so must take some measures to clear up the affect and insure the system' reliability.
     同时,双环前馈放大器对工作环境(温度、频率、功率、器件老化、电源电压等)的变化十分敏感,对性能的稳定性影响很大,必须采用相应的措施来消除这些影响,以保证系统的可靠性。
短句来源
     Vector modulators have been used in this paper to vary the phase and amplitude of signals in the in-band spurious cancellation loop of feed-forward power amplifiers (FFPA). In the two-tone test, 3.5GHz FFPA developed in this paper shows more than 35dB improvement in the third-order inter-modulation (IM3), offers approximately -60dBc IM3 output, achieves the expected goal, and meets the communication requirement.
     本文研制的3.5GHz前馈放大器采用了矢量调制器来实现前馈环路的幅度和相位调节,在双音测试结果中,三阶交调IM3的改善超过了35dB,前馈系统输出IM3抑制近-60dBc,达到了预期指标,满足了通信需要。
短句来源
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  feedforward amplifier
Adaptive feedforward amplifier linearizer phase shift introduced in both the signal and error cancellation circuits respectively.
      
A feedforward amplifier achieves its linearity improvement by canceling the intermodulation products produced by the main amplifier.
      
A vector attenuator for feedforward amplifier and RF predistortion use.
      
Analysis of a microwave feedforward amplifier using Volterra series representation.
      
For simulation purposes, the equivalent adaptive feedforward amplifier model is shown in Figure 2.
      
更多          
  feedforward amplifiers
Compensation of amplifier nonlinear phase response to improve wideband distortion cancellation of feedforward amplifiers.
      
Distortion cancellation in the feedforward amplifiers is based on the subtraction of two signals.
      
Further improvements in feedforward amplifiers have been achieved by shifting several analogue components to the digital regime.
      
Furthermore, the manufacture of the analog feedforward amplifiers is no longer needed and a cheaper digital process can be used.
      
The poor settling time often associated with feedforward amplifiers is due to doublets,orclosely-spacedpolezero/pairs in the signal path.
      
更多          


Based on the basic theory of feed-forward power amplifier,the paper presents the theoretical analysis of the loops coefficients' relative-error's affection on the feed-forward power amplifier system's "intermodulation-cancellation",and shows the simulation results by the system view software besides some factors which would be considered during the design of the feed-forward power amplifier.

基于前馈放大器的基本原理,对由前馈放大器环路系数的相对偏差产生的"交调消除"影响进行了理论分析;通过SystemView软件仿真,给出了仿真结果;指出了在设计前馈放大器时,需要注意的几个问题。

In order to analyse the performance of suppression nonlinear productions of feedforward amplifiers, the suppression equation of the loop has been established based on the model of a suppression loop. And the function relation between the performance of suppression nonlinear productions and the mismatching of amplitude, phase and delay of the loop has been developed. Simulation and analyzing results show that the delay mismatching is the dominant factor to affect the bandwidth of a feedforward amplifier. The...

In order to analyse the performance of suppression nonlinear productions of feedforward amplifiers, the suppression equation of the loop has been established based on the model of a suppression loop. And the function relation between the performance of suppression nonlinear productions and the mismatching of amplitude, phase and delay of the loop has been developed. Simulation and analyzing results show that the delay mismatching is the dominant factor to affect the bandwidth of a feedforward amplifier. The resuts are significant for the design and debugment of the feedforward amplifiers.

为了便于分析前馈放大器对非线性产物的抑制特性,通过抑制环路模型,建立了环路抑制方程,并由计 算机仿真得到了环路对非线性产物的抑制性能与幅度失配、相位失配及延迟失配的理论数值关系.分析对比说 明,延迟失配是影响环路抑制带宽的主要因素,对前馈放大器电路的设计和调试具有指导意义.

A foreign scholar has brought forward some kind of delay mismatch method to improve the efficiency of feedforward amplifiers. In order to observe the effect on cancellation performance of linearization loop of feedforward amplifiers, especially on cancellation performance of error cancellation loop, this article analyzes the method carefully and completely from magnitude error, phase error and delay mismatch, and gets corresponding conclusions.

国外有学者提出了一种延迟线失配法来提高前馈放大器的效率。为了更全面考察这种方法对于前馈放大器单环抑制性能,尤其是误差环路的抑制性能的影响,从幅度、相位误差以及延迟线失配3个方面进行了仔细全面地分析,并得出了相应的结论。

 
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