1) quadrature frequency discriminator
四相鉴频器
1.
In order to acquire and track the spread spectrum signal rapidly,the changing band-width tracking strategy is adopted,which uses the quadrature frequency discriminator,Cross Product and Costas together to keep the carrier loop.
为了能够快速地对扩频信号进行捕获跟踪,采用了四相鉴频器、符号叉积频率跟踪算法和科斯塔斯环混合进行载波跟踪的变带宽跟踪策略。
3) phase frequency detector
鉴频鉴相器
1.
This article introduces an typical application of HMC440 which is an ultra low phase noise floor phase frequency detector produced by HITTITE.
介绍了HITTITE公司一款具有超低相位噪声基底的鉴频鉴相器HMC440在C波段锁相频率合成器中的应用。
2.
By injecting the compensation current into the passive loop filter during the delay time of the phase frequency detector(PFD),a maximum reduction of the phase noise by about 16dB can be achieved.
通过在鉴频鉴相器中的延迟时段向无源滤波器中注入补偿电流,最大可实现16dB的噪声补偿。
3.
This paper presents a differentail-type phase frequency detector(PFD)of SCL structure.
介绍一种基于场效应管源级耦合逻辑 (SCL)结构的高精度差分型鉴频鉴相器 (PFD)的设计 ,包括构成PFD的SCL结构基本单元———SCL结构D触发器、与非门、倒相器和缓冲单元。
4) phase-frequency detector
鉴频鉴相器
1.
A Design of Tri-state Phase-Frequency Detector;
一种三态鉴频鉴相器的设计
2.
A fast-locking,low-jitter,phase-locked loop (PLL) with a simple phase-frequency detector is proposed.
用简单的鉴频鉴相器结构实现了一个快锁定低抖动的锁相环。
5) PFD
鉴相鉴频器
1.
An adaptive Phase-Locked Loop (PLL) with a fast settling time and its key blocks including Phase-Frequency Detector (PFD) and charge pump are then proposed and analyzed.
提出并分析了一种自适应的具有快速建立时间的锁相环结构及其关键模块(鉴相鉴频器和电荷泵)。
补充资料：鉴频器
| 鉴频器 frequency discriminator 使输出电压和输入信号频率相对应的电路。按用途分为两类：一类用于调频信号的解调，常见的有斜率鉴频器、相位鉴频器、比例鉴频器等，对这类电路的要求主要是非线性失真小，噪声门限低。另一类用于频率误差测量，如用在自动频率控制环路中产生误差信号的鉴频器。对这类电路的零点漂移限制较严，对非线性失真和噪声门限则要求低。斜率鉴频器的电路比较简单，但回路失谐时其谐振特性曲线不是直线，因而鉴频特性的线性较差。相位鉴频器鉴频特性的线性较好，鉴频灵敏度也较高。 |
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