2) pre-IF amplifier
前置中频放大器
3) IFP (Intermediate-Frequency Preamplifier)
中频前置放大器
4) front-collection
前置采集
5) preamplifier
[英][pri:'æmplə,faiə] [美][pri'æmplə,faɪɚ]
前置放大
1.
In order to improve the sensitivity measurement of the trace gas concentration, proposed one kind of advanced design of photo-electricity detection of preamplifier circuit applied to this monitoring system, that is, the programmable gain preamplifier circuit of photo-electricity detection.
基于可调谐二极管激光吸收光谱(TDLAS)的痕量气体监测系统,为提高痕量气体浓度的高灵敏度测量,提出应用于此监测系统中的光电检测前置放大电路的一种改进设计,即程控增益光电检测前置放大电路。
2.
The keystones and difficulties during the design and realization of NMR preamplifier for Oil Well Logging System were analyzed.
根据微弱信号检测技术和电路低噪声设计基本原理,结合核磁信号本身信号强度微弱、噪声干扰严重等特性,以及核磁共振测井仪工作环境的特殊性,着重分析了在核磁共振测井仪前置放大器研制过程中其关键电路研制的重点和难点,并给出了相应的电路原理图。
3.
In this paper, problems and related technical measures about structure of acquisition system, preamplifier, power and earthing, which must be considered in designing foreside of high-speed data acquisition system, are discussed.
研究了关于高速数据采集系统前端设计时需考虑的结构、前置放大器、电源和接地等问题及其相应的技术措施,从而为设计高性能的高速数据采集系统提供参考。
6) pre-amplifier
前置放大
1.
Based on the factors of PIN photodiode monitoring, we proposed a pre-amplifier circuit which can improve Signal-to-Noise and decrease the bandwith of noise, and pointed common prinples in designing low-noise, high-responsibility photodiode monitoring.
从PIN光伏探测器的特性入手,设计了一种能提高电路信噪比及减小噪声带宽的前置放大电路,并指出了设计低噪声、高响应度光电检测电路的一般原则。
2.
In this paper, a signal de-tection method and a pre-amplifier circuit design are elaborated according to the Lock-in amplifier (LIA) principle and OPA128 chip characteristic.
本文采用锁定放大技术的原理,根据OPA128芯片的特点,提出了信号检测的方法和前置放大电路的设计。
补充资料：中频
1.高于低频﹑低于高频的电磁振荡，其范围一般是10－550千周。在超外差式收音机中，由收音机本身产生的振荡和接收到的高频混合而取得中频。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条