Abhishek Ji

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    SUBMITTED TO :- DEEPAK SHARMA

    SUBMITTED BY:- AKANSHANEEKHRA

    AKANSHA SHRIVASTAV

    ABHISHEK TRIPATHI

    PPT ON BICONICAL ANTENNA

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    INTRODUCTION

    FIGURE

    FEATURES

    CONSTRUCTION

    THEORY

    APPLICATION

    ADVANTAGES AND DISADVANTAGES

    BIBLOGRAPHY

    CONTENTS

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    BICONICAL ANTENNA

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    BICONICAL ANTENNA

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    30 MHz to 100 MHz frequency range

    2 Biconical elements

    Tilt-angle and polarization are easily adjustable

    High power balun handles up to 15 kW RF input power

    Mounted on wheeled base for easy mobility

    Wide beamwidth illuminates a large uniform area

    FEATURES

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    CONSTRUCTION OF

    BICONICAL ANTENNA A biconical antenna consists of an arrangement of two

    conical conductors, which is driven by potential, charge, oran alternating magnetic field (and the associated alternatingelectric current) at the vertex. The conductors have acommon axis and vertex. The two cones face in oppositedirections.This example demonstrates biconical antenna analysis inEMC Studio. Frequency range: 20 MHz - 300 MHz. .

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    THEORY OF BICONICAL ANTENNA :-

    In radio systems, a biconical antenna is a broad-bandwidth antenna madeof two roughly conical conductive objects, nearly touching at theirpoints. Biconical antennas are broadband dipole antennas, typicallyexhibiting a bandwidth of 3 octaves or more.

    The conical conductors need not be solid cones nor infinitely long. Asimpleconical monopole antenna is a wire approximation of the solidbiconical antenna and has increased bandwidth (over a simple monopole). Acommon variant is the Discone antenna, where one of the cones is replacedwith a flat disk. A bowtie antenna is a wire approximation in two dimensionsof a biconic dipole antenna (used, for example, for UHF television reception).

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    APPLICATION:- Biconical antennas are used for emissions and immunity testing

    to meet various EMC standards specified by FCC, CISPR andEN.

    Biconical antenna is suitable for EMI, Certification tests as FCC,MIL-STD, VDE, TEMPEST, and also for immunity testing.

    antennas are used for EMC site attenuation measurements forbetter accuracy.

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    FUTURE APPLICATION OF

    ANTENNA :- Broadband RX-antenna for emission testing (20-300 MHz) TX-antenna for immunity testing, especially at low frequencies.

    Measurements of shielding effectiveness.

    Evaluation of test sites e.g. anechoic rooms (FAC) and open area test sites (OATS).

    Passive field probe for immunity testing

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    ADVANTAGES Excellent azimuth pattern symmetry Low loss, high efficiency.

    DISADVANTAGES

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    BIBLOGRAPHY REFERANCE BOOK:- K.D .PRASAD WIKIPEDIA AND INTERNET DEEPAK SIR

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    THANK YOU