Jun 17, 13 •
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The various connecting devices are given as follows: 1.Repeaters This network regenerates the signals that can be either electrical or wireless or optical type of the signals. The data transmitted regenerate incoming electrical,wireless or optical
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Jun 17, 13 •
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INTRODUCTION TO ANTENNA : ANTENNA TERMINOLOGY : Antenna can be defined as a strong metal structure and its form of wire is called aerial . This word antenna was developed by an Italian , Guglielmo Marconi . He used long aerial wires and a wire attached with
Jun 17, 13 •
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TYPES OF ANTENNA : BABINET’S PRINCIPLES OF COMPLEMENTARY ANTENNA : The complementary impedance can be found by using Babinet’s Principles . It states when a screen has a opening that is added to complementary structure and a field lies behind it , then
Jun 17, 13 •
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OPTICAL RECEIVER AND ITS COHERENT DETECTION OPTICAL RECEIVER:- -The main components of an optical receiver is a photo detector which is used for the amplification and processing of signals. -Various noises and distortions are introduced due to imperfect
Jun 17, 13 •
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PHOTO DIODE:- – The device consists of a p and n semiconductor region separated by a very lightly n-doped intrinsic region. – The optical power decreases exponentially as the incident light is absorbed in depletion region. – The electron