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技术资料 基于滑模观测器与分数阶锁相环的无传感器PMSM矢量控制
Abstract: A sliding mode observer and fractional-order phase-locked loop (FO-PLL) method is proposed for the sensorless speed control of a permanent magnet synchronous motor (PMSM).The saturation function is adopted in order to reduce the chattering phenomenon caused by the sliding mode observer. In ...
书籍 Phase-Locked+Loops+for+Wireless+Communications
This book is intended for the graduate or advanced undergraduate
engineer. The primary motivation for developing the text was to present a
complete tutorial of phase-locked loops with a consistent notation. I believe
this is critical for the practicing engineer who uses the text as a self-study
guid ...
模拟电子 ISM射频产品的晶体频率计算
Abstract: Many industrial/scientific/medical (ISM) band radio frequency (RF) products use crystal oscillators to generate areference for the phase-locked loop (PLL)-based local oscillator (LO). This tutorial provides a basic description of theISM-RF Crystal Calculator, which can be used to calcula ...
模拟电子 寄存器和环路滤波器的设计
The MAX2870 ultra-wideband phase-locked loop (PLL) and voltagecontrol oscillator (VCO) can operate in both integer-N and fractional-Nmodes, similar to the Analog Devices ADF4350 wideband synthesizer.This application note compares the MAX2870 and ADF4350 registers andloop filter design in detail. U ...
VHDL/FPGA/Verilog The Hilbert Transform is an important component in communication systems, e.g. for single sideband m
The Hilbert Transform is an important component in communication systems, e.g. for single sideband modulation/demodulation, amplitude and phase detection, etc. It can be formulated as filtering operation which makes it possible to approximate the Hilbert Transform with a digital filter. Due to the n ...
技术资料 Specifying the Jitter Performance
The question of sample-clock quality is a perennial one for digital audio equipment designers. Yet most chip makers
provide very little information about the jitter performance of their products. Consequently, equipment designers
sometimes get burnt by jitter issues. The increasing use of packet-bas ...
模拟电子 模拟cmos集成电路设计(design of analog
模拟集成电路的设计与其说是一门技术，还不如说是一门艺术。它比数字集成电路设计需要更严格的分析和更丰富的直觉。严谨坚实的理论无疑是严格分析能力的基石，而设计者的实践经验无疑是诞生丰富直觉的源泉。这也正足初学者对学习模拟集成电路设计感到困惑并难以驾驭的根本原因。.美国加州大学洛杉机分校(UCLA)Razavi教授凭 ...