The Current Distribution of Symmetrical Dual and Triple Feeding Full-Wave Dipole Antenna

Yahya S H Khraisat,Khedher A Hmood,Al-Mofleh Anwar

doi:10.5539/mas.v5n6p126

Abstract

This paper is focused on the analysis of the current distribution of symmetrical full-wave dipole antenna based on double and triple feeding techniques; the current distributions were measured using a shielded loop protruding through a slit in the antenna surface along its axis, gives exact and accurate measurement rather than sinusoidal approximation. However, the sinusoidal distributions of current and voltage are approximations rather than exact descriptions. Next the current distributions were modeled and formulated whose parameters were deduced from the measured current distribution by applying the current distribution data in models as derived by IEEE standard

Highlights

The input techniques impedance, the far-field radiation pattern and the directive gain are indispensable parameters in characterizing the antenna
The calculation and measurement of the current distributions are important for the analysis and design of antennas because the other properties of the antenna may be determined from the current distribution
In the case of a linear antenna, the radiation pattern may be estimated from the current distribution which is measured more than the far field (Yahya, etal., 2008; Harrington, 1960; Egashira, et al, 1985)

Summary

Introduction

The input techniques impedance, the far-field radiation pattern and the directive gain are indispensable parameters in characterizing the antenna. The calculation and measurement of the current distributions are important for the analysis and design of antennas because the other properties of the antenna may be determined from the current distribution. The far-field radiation pattern of a microwave antenna is usually evaluated from the measured near field. In the case of a linear antenna, the radiation pattern may be estimated from the current distribution which is measured more than the far field (Yahya, etal., 2008; Harrington, 1960; Egashira, et al, 1985)

Methods

Results

Conclusion