Pulse modulator - AccessScience from McGraw-Hill Education
Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. Pulse-width modulation PWM , or pulse-duration modulation PDM , is a modulation technique used to encode a message into a pulsing signal. Although… Expand. Related topics. Papers overview Semantic Scholar uses AI to extract papers important to this topic. Maximum power point trackers MPPT are required in order to obtain optimal photovoltaic power.
Element 3: General Radiotelephone
This document gives an overview of how pulse width modulation and demodulation can be performed using bipolar junction transistors and operational amplifiers. The simulation for the same was carried out using ngspice. The results obtained have been presented at the end of this document. Pulse Width Modulation is a modulation process or technique used in most communication systems for encoding the amplitude of a signal right into a pulse width or duration of another signal carrier signal for transmission.
We review different techniques for modulation of the electromagnetic properties of terahertz THz waves. We discuss various approaches for electronic, optical, thermal and nonlinear modulation in distinct material systems such as semiconductors, graphene, photonic crystals and metamaterials. The modulators are classified and compared with respect to modulation speed, modulation depth and categorized by the physical quantity they control as e. Based on the review paper, the reader should obtain guidelines for the proper choice of a specific modulation technique in view of the targeted application.