PPT-Pulse Width Modulation

By Zak Ahmad Phuc Dao Joel Toussaint Outline Introduction PWM Definitions Generation Types PWM on the HCS 12 Applications 2 Presented by Zak Ahmad Introduction P ulse W idth M odulation PWM is a technique for delivering partial power to a load via digital means. 0 BASIC TECHNIQUE This application note describes a technique for creating an analog to digital converter using a microcontroller with other low cost components Many applications do not require the speed associated with a dedicated hardware AD conver Common means of modulating data in digital communication Key advantage is that I can send mu ltiple signals using Time Division Multiplexing There are several pulse modulation techniques Pulse Amplitude Modulation Pulse Width Modulation Pulse nalhareqi-2013. 1. Standard Amplitude Modulation (AM). nalhareqi-2013. 2. In the DSP-SC demodulation, a receiver must generate a local carrier in frequency and phase synchronism with the carrier used for modulation.. generator. Student: Deaconescu . Ionu. ţ. -Cosmin. . Proffesor. : . PhD. . . Eng. . . Zdzislaw. Polkowski. . Polkowice, Poland. 2013. . Introduction. . Pulse wave. . Rectangular wave. . Pulse generator. Husheng Li. The University of Tennessee. Phase and Frequency Modulation. Consider the standard CW signal. We define the total instantaneous angle. Phase and Frequency Modulation. Phase modulation (PM). Amplitude Modulation (AM). Time domain equation. y. AM. (t. ) = . Information or message x carrier. . = . m(t) . x A cos(w. c. t. ). . Frequency domain equation. Double . sideband . Analogue to Digital Conversion. Quantizing. Encoding. Pulse Code Modulation. DEFINITION: . Pulse code modulation (PCM) is essentially analog-to-digital conversion of a special type where the . information . Repeatedly and Continually. Objectives:. Students will be able to use the adjective modulation of VERY and repeated and continuous forms of verbs and match them with their corresponding time signs.. Students will be able to sign the vocabulary correctly using MOPSE and be able to interpret the vocabulary when signed in lists and in sentences. . . ). Data Transmission And Digital Communication. Lecture 5– 2019/1440. By: Elham Sunbu. OUTLINE. Sampling.. Pulse Amplitude Modulation .. Analogue to Digital conversion.. Sampling (PCM).. Pulse Code Modulation Advantages.. Lecture . 1-7. University of . Mustansiriyah. College of Engineering. Department of Computer Engineering . Binary modulation schemes . ASK. , FSK, . PSK. n. = . 1, . M = 2 (Only Two . output conditions are . possible). Baud . is equal to . the bit . rate. M-. ary. Modulation Techniques. QPSK, 8-PSK, 18-PSK, QAM, 16-QAM. Bryan, G8DKK. Outline. AM and FM Waveforms. FM Transmission. Modulation Frequency. Deviation. Mic Gain . Control. Limiter/Limiting amplifier. Occupied Bandwidth. FM Receivers. Receiver bandwidth (Filters). 1. http://www.gaussianwaves.com/2012/05/performance-comparison-of-digital-modulation-techniques/. Note: M=2^m. Prof. Brian L. Evans. Dept. of Electrical and Computer Engineering. The University of Texas at Austin. 15 - . 2. Introduction. Digital Pulse Amplitude Modulation (PAM). Modulates digital information (symbols) onto amplitude of pulse.