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- automatic frequency tuning 自动频率调谐
- The tuning circuit is improved from voltage-controlled filter (VCF) frequency tuning circuit. 这个调协电路是改善自电压控制滤波器频率调协电路。
- As a design method, frequency tuning approach (FTA) was suggested to be used first to avoid critical frequency ranges. 建议人行桥梁设计时应首先采用频率调整法，使结构自振频率尽量不落在敏感频率范围内。
- The results suggest: 1.Binaural inhibition may play a crucial role in direction dependent Q-value of frequency tuning curve (FTC) of TC neurons;2. 2)前级神经元对不同方位外界声源刺激具有不同强度平均脉冲发放率的特征则主要决定其最低阈值随方向变化的特性 ;
- However, if the same frequency tuning range is achieved with a larger voltage, this also results in a lower noise sensitivity. 但是，如果利用大摆幅电压达到同样的频率调谐范围，可以降低噪声灵敏度。
- Automatic Frequency Control A circuit in a radio receiver which automatically brings the tuning units of the set into resonance with a wave which is partially tuned in. 自动频率控制无线电接收机中的一种电路,能够自动实现接收机中的调谐单元与部分接收到的波形谐振。
- The revolutionary Bulova's Accturon movement was inveted in 1960,witch high frequency tuning fork replacing the traditional balance wheel to improve accuracy. 1960年推出全球首个电磁式音叉机芯，以音叉震动的高频率取代摆轮，提高腕表的准确度，带领制表科技进入新境界，成为品牌的得意杰作。
- Automatic frequency control (AFC) system is used to adjust the frequency of microwave power source to match the inherent frequency of acceleratory tube. 自动频率控制(AFC)系统用于调节微波功率源输出的微波频率,使之与加速管的固有谐振频率匹配。
- This article introduces the principle of the closed link automatic frequency control system in Z2000 spread spectrum transceiver and how to control it. 本文阐述了Z2000接收机内的闭环自动频率控制系统的工作原理，并说明如何控制这个系统。
- In order to make the RF source and the waveguide have the same resonant frequency,the automatic frequency control(AFC)system is used. 为了使得射频源和波导管的频率保持一致 ,采用了自动频率控制系统 (AFC)。
- The microwave oscillator frequency is locked to the resonant frequency of loaded resonator by means of automatic frequency control (AFC). 微波振荡频率用自动频率控制 (AFC)的方法自动锁在有载腔的频率上 .
- TheSPM-D10 synchronizer provides automatic frequency, phase and voltagematching using either analog or discrete output bias signals. 该扫描探针显微镜-D10的同步器提供了自动频率，相位和电压匹配使用模拟或离散输出偏置信号。
- On the basis of design of DDS utilizing FPGA, it presented a method of realizing the altitude modulation by generating the main wave and the modulation wave respectively, and the frequency modulation by changing frequency tuning word of main DDS. 在利用FPGA实现DDS的基础上,使用两路DDS分别产生主波形和调制波形,方便地实现两个任意波信号的幅度调制; 同时,通过调制波形数据实时控制主DDS的频率控制字,用数字的方法直接实现波形的各种频率调制。
- The system based on the principle of zero-IF is realized by WE905 chip combined with AFC (Automatic Frequency Control) circuits power amplify circuit and so on to communicate. 该系统主要基于零中频技术原理,在主芯片WE905的基础上,结合自动频率控制电路、滤波电路、信号放大电路等功能电路实现无线通信。
- The emphasis is laid on dielectric materials,frequence tuning property of DRO, optimization of phase noise,widening of DRO designs,welding,and reliability. 重点介绍了介质材料、DRO的频率调谐特性、相位噪声性能的优化、DRO的拓展设计以及焊封和可靠性。
- Algorithms,such as automatic frequency control(AFC),automatic gain control(AGC),phase-amplitude tracking(PAT),and phase ambiguity detecting (PAD),were jointly used in this scheme. 综合应用自动频率控制(AFC)、自动增益控制(AGC)、相位/幅度跟踪、相位模糊检测等算法,在没有任何训练序列的情况下,能准确地恢复调制信号载波相位。
- High Frequency Tuning Unit Antenna Automatic Matching 高频调音装置天线自动匹配
- We can reasonably hy pothesize that AC neurons with multipeaked frequency tuning curves could execute a function as a highly tuned preprocessor of complex spectral information. 实验中还观察到多峰频率调谐曲线神经元，它们在声通讯和声定位中不同波谱区域的时间匹配中起作用。
- This algorithm is applied for carrrier and bit synchronization, AFC (Automatic Frequency Control) of MAX2820. The algorithm comprises of PN acquisition ,PN tracking, leftover carrier estimate and AFC algorithm. 本文中还讨论了零中频直扩系统的基带接收模块,用于载波同步和位同步,提取频偏信息,对射频芯片Max2820进行自动频率控制。 它包括了伪随机码的捕获、跟踪、残留频偏算法以及AFC算法电路。
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