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Modulators

Modulators and Demodulators

CHAPTER9 Modulators and Demodulators This chapter discusses two additional major devices used in communications, radar, and other RF systems: modulators and demodulators.

Application Note: Modulators

Modulators Mini-Circuits offers QPSK (quadrature phase-shift keying) and I&Q modulators from 10% bandwidth to as much as 5:1 octave span. So there's no longer any need to gather double-balanced mixers and 0° and 90° hybrids to assemble "in-house" QPSK or l&Q modulators.

UNDERSTANDING MODULATORS This article explains in simple ...

UNDERSTANDING MODULATORS This article explains in simple terms, the basics of modulation as well as the different types of Modulators along with block diagrams and technical details of each Modulator topology.Authored by Mahendra Tanna, Tanna Electronics & SCaT Magazine

Fibre-Optic Communication a - telecom w w w. e f y m ag . co ...

telecom w w w. e f y m ag . co m electronics for you • march 2008 • 47  V.N. Rawal High-Speed Modulators for Fibre-Optic Communication achieving high data rate for optical transmission has been a prime area of research for more than two decades.

OM 1000 MPEG-2/Digital Out-Of-Band Modulator

OM 1000 OM 1000 MPEG-2/Digital Out-Of-Band Modulator The Motorola out-of-band multiplexer/modulator, OM-1000, provides an out-of-band data stream to the digital settop terminals.

MT-080: Mixers and Modulators

MT-080 TUTORIAL Mixers and Modulators MIXER AND MODULATOR OVERVIEW An idealized mixer is shown in Figure 1. An RF (or IF) mixer (not to be confused with video and audio mixers) is an active or passive device that converts a signal from one frequency to another.

Thermo-optic photonic crystal light modulator

Note that the insertion loss is significantly less here than that which would be estimated from the data acquired from the test devices shown in Fig. 2, suggesting that the insertion loss of modulators embedded in photonic crystal linear waveguides may perform much better than in the test devices.

VM2050 Agile Video Modulator for "T" Channels

"T" channel modulators utilize the return path segment (below 54 MHz) of a CATV system to feed remotely sourced programming to the cable headend for recording, processing, or redistribution.

Solutions with Solid State Switches for Pulse Modulators

Solutions with Solid State Switches for Pulse Modulators A. Welleman , R. Leutwyler ABB Switzerland Ltd, Semiconductors Fabrikstrasse 3 CH-5600 Lenzburg / Switzerland

Application of Electro-Optic Materials: Design of Polymeric ...

135 CHAPTER 4 Application of Electro-Optic Materials: Design of Polymeric Optical Modulators 4.1. Introduction In recent years, electro-optic polymers have been used to make various optical devices in the telecommunication field due to several advantages.