查询词典 feedback amplifier

The magnetizer consists of coil and incentive power, and AE testing system consists of sensor, pre-amplifier, main-amplifier and filter.

本测试系统的硬件部分由磁化器和AE检测系统两部分组成，线圈和激励电源组成磁化器部分，传感器、前放、主放和滤波电路组成的AE检测部分。

Parametric amplifier in a number of microwave devices, widely used, usually in radar, navigation, electronic warfare, radio astronomy microwave systems such as receiver front-end amplifier, greatly increased the sensitivity of the receiver.

参量放大器在许多微波设备中得到广泛的应用，通常在雷达、导航、电子对抗、射电天文等微波系统中作接收机前端放大器，大大提高了接收机的灵敏度。

Especially , with the wide use of the low noise microwave receiver model of "low noise amplifier - mixer - intermediate frequency amplifier", the rejection to image frequency interference has become the last problem how to make the whole receivers noise low and resist interference.

尤其是随着"低噪声放大器——混频器——中频放大器"这种低噪声微波接收机模型的广泛使用，对镜频干扰的抑制已逐渐成为整机低噪声、抗干扰的最后难题。

In the method of the invention, a baseband signal is pre-processed to realize nonlinearity compensation. The pre-processing method comprises the following steps: the filter coefficient and the multinomial coefficient of the high power amplifier are extracted; corresponding gain is calculated for the amplitude value of each point input into the sequence of the baseband signal, and the phase compensation value is calculated according to the amplitude gain; the phase compensation value and the gain which are corresponding to each point are synthesized into re-gain, a pre-processing value pi is obtained, and pre-processing output sequence is formed; the pre-processing output sequence is output into the high power amplifier directly or through a inverse filter.

本发明方法是将基带信号进行预处理来实现抵偿非线性，预处理方法是：提取出高功率放大器的滤波器系数和多项式系数；对输入基带信号序列中的每一点的幅值计算对应的增益，根据幅度增益计算出相位补偿值；每一个点对应的相位补偿值与增益合成复增益，得到预处理值p i ，构成了预处理输出序列；将预处理输出序列直接或经过反向滤波器后输出到高功率放大器中。

It consists of a low noise amplifier, mixer, limiter, FM/FSK demodulator with an external LC tank circuit or ceramic resonator, LPF amplifier, and a data slicer with clock recovery and an integrated data bit synchronizer.

它包括与外部LC谐振电路或陶瓷谐振器，低通滤波器放大器，以及一个集成的时钟恢复和数据位同步数据限幅器的低噪声放大器，混频器，限制器，调频/ FSK解调器。

This design are composed of pre-amplifier, after-amplifier, and the modules of display and control based on microcontroler.

本设计由前级放大电路、后级放大电路和单片机显示与控制模块构成。

If you only have an old turntable and no amplifier, you will need to amplify the signal using a pre-amplifier before plugging it into the PC sound card.

如果你只有一个老唱盘，没有放大器，你需要使用前置放大器将信号放大，然后再将其与电脑声卡连接。

It also introduced every parts of signal process system,including the pre-amplifier,correlated double sampling circuit,amplifier...

测试结果表明该系统成功抑制了噪声，满足太阳X射线观测的要求。

Advanced Integrated Circuits are used in signal process. The prepositive signal processor is placed close to the model rotor. The instrument amplifier, the voltage and current converter/transmitter, the isolation amplifier, the isolation power unit, the current and voltage converter etc.

将先进的集成元器件应用于测试电路的研制中，在国内首次将前置信号处理器放置于模型旋翼附近，并采用仪用放大器，电压/电流转换，隔离放大器，隔离电源，电流/电压转换等措施以实现信号远距离传输下的高信噪比信号测量。

High-frequency continuous modulation on the high-power semiconductor laser is required in our ladar system. The theory and driving methods of the semiconductor laser is summarized in this article. Two kinds of driving circuit including linear power amplifier and resonance power amplifier are designed for continuous and quasi continuous modulated laser.

针对研制的无扫描激光雷达系统，需要对大功率半导体激光器进行高频连续调制，本文总结了半导体激光器的原理和驱动方法，并针对连续和准连续调制大功率激光器的特点分别设计了两套驱动电路，包括线性功率放大驱动电路和谐振功率放大驱动电路。

The quality of both red and white wine depends very much on the wine maker talent and on the quality of the grapes.

他的红酒和白酒的品质，根据酿造者的能力和葡萄的质量，各有差异。

No, I don't want to get drunk before my next match.

" "不，我不想让我的下一场比赛前喝醉了。