Archive for the ‘Notes’ Category

  • connecting Devices,2 and 3 layer switches

    Jun 17, 13 • 3131 Views • Notes • • 2 Comments

    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

  • INTRODUCTION TO ANTENNA

    Jun 17, 13 • 4249 Views • Notes • • 5 Comments

    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

  • TYPES OF ANTENNA

    Jun 17, 13 • 24485 Views • Notes • • 3 Comments

    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

  • OPTICAL RECEIVER AND ITS COHERENT DETECTION

    Jun 17, 13 • 4618 Views • Notes • • 2 Comments

    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

  • Photodetectors

    Jun 17, 13 • 4885 Views • Notes • • 2 Comments

    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