According to the mechanism of quartz crystal resonator frequency trimming and the characters of laser engraving,a quartz crystal resonator frequency trimming system is designed on the basis of PC and laser unit.
根据石英晶振频率微调机理及激光刻蚀特性,设计软件、硬件实现了一个基于PC机和激光器的石英晶振频率微调装置,并提出了一种实用刻蚀方案,可实现对多片晶片同时微调,能有效地消除微调过程中出现的温漂等问题,同时讨论了提高微调速度及合格率的方法。
horizontal AFC circuit
行自动频率微调电路
This FD method can be used for AFC of the coherent-on-receive system.
这种频率鉴别方法可以用在接收相参系统中的自动频率微调。
Research on Frequency Trimming of Quartz Crystal Resonators by Laser Etching;
石英晶振器件的激光刻蚀频率微调研究
Realization method of frequency micro adjustment in automatic detection system of missile terminal guidance radar
频率微调在导弹末制导雷达自动检测系统中的实现方法
DESIGN OF QUARTZ CRYSTAL RESONATOR FREQUENCY TRIMMING SYSTEM BASED ON LASER-ENGRAVING
基于激光刻蚀技术石英晶振频率微调系统的设计
center frequency
中心频率未调制频率
Magnetotunable microwave transmission properties of a magnetoinductive device
频率可调磁感应波器件的微波透射性能
modulator carrier
调制器载(波)频(率)
modulation frequency ratio
调制频率与载频之比
modulation frequency-carrier ratio
调制频率－载波比率
It can remove the interference of power supply more efficiently than the conventional one.
该方案通过跟踪周期性干扰信号的频率变化,微调采样频率,改善了自适应模板法滤波性能。
How about their frequencies?
微波的频率怎么样?
automatic frequency control
自动频率控制自动频率调整
Study on High-Resolution Frequency Synthesizer at L-band;
L波段高频率分辨率微波频率源的研究
Frequency Regulation Frequency regulation is a measure that states the difference between no-load and full-load frequency as a percentage of full-load frequency.
频率调整率频率调整率是指空载和满载之间频率的差别与满载频率的百分比。
automatic frequency control transformer
自动频率调整变压器
VoltsHertz regulators and protection.
电压／频率调节器及保护。
modified modified frequency modulation
改进的改进频率调制