Communication, radar and remote sensing systems employ thousands of different types of wire antennas, and there is an increasing need for high-performance, customized antennas. Current methods of designing and optimizing them by hand using simulation or analysis are timeand labor-intensive, limit complexity, increase the cost and time expended, and require that antenna engineers have significan...

Recently, normal-mode helical antennas (NMHA) are employed as very small antennas for metal plate proximity uses [1] ~ [3]. In order to obtain efficient radiation, the self resonant condition of a NMHA should be satisfied. In this condition, the inductive reactance and the capacitive reactance of a NMHA are cancelled. As for the inductance, Wheeler presented an equation employing structural par...

Wireless applications, particularly with multiple resonances, put new demands on antennas pertaining to size, gain, efficiency, bandwidth, and more. One promising approach in this regard is to use fractal geometries to find the best distribution of currents within a volume to meet a particular design goal. In the miniaturization of wire antennas it has been found that the electromagnetic coupli...

Dedication This volume of studies of long-wire antennas is dedicated to the memory of Jean, who was my wife, my friend, my supporter, and my colleague. Her patience, understanding, and assistance gave me the confidence to retire early from academic life to undertake full-time the continuing development of my personal web site (http://www.cebik.com). The site is devoted to providing, as best I c...

ommunication antennas are all around us and a major part of the way we live our lives. Chances are that you have a cell phone or wireless PDA on your person right now. A drive down most any road will likely take you past a radio tower or cell station array. So why are antennas so important and worth studying? The answer lies in the fact that they are essential to modern day human communication....

We present a simplified numerical method to solve for the current distribution in a V-shaped antenna excited by an electric field with arbitrary polarization. The scattered far-field amplitude, phase, and polarization of the antennas are extracted. The calculation technique presented here is an efficient method for probing the large design parameter space of such antennas, which have been propo...

In this work, a new method is presented for analyzing the transient electromagnetic response from conducting wire structures using the time-domain integral equation (TDIE). Instead of the conventional marching-on in time (MOT) technique, this solution method is based on Galerkin’s method, which involves separate spatial and temporal testing procedures. Piecewise triangle basis functions have be...