The space mapping is powerful technique for modeling a handset antenna. Thin-wire models are oppressed as coarse models in SM algorithm and fine models which is high accuracy electromagnetic simulations. We apply space mapping to design of antenna firstly We manipulate a coarse-mesh method of moments (MoM) solver as coarse model and align it with the fine-mesh MoM solution through space mapping...

The indirect two-port reflection method for measuring antenna impedances is reviewed using scattering parameter techniques and developed into a more accurate low perturbation optically coupled transmission measurement. This transmission measurement infers the antenna impedance by measuring the voltage induced in a number of loads connected to the antenna port with reference to the antenna used ...

This paper is a review of amateur-built high-directivity wire antennas, for wireless local area network (WLAN), operating at 2.4-GHz frequency range. Those antennas can be deployed for range extension and interference reduction, for example. Covered in this review are a biquad antenna with reflector, Yagi-Uda antenna, and helical antenna. The distinctive feature of these antennas is their ease ...

Abstract— The radiation characteristics of two kinds of antennas made of transparent conductive films are investigated: a planar inverted-F antenna (PIFA) and a monopole antenna. These antennas are designed to work at 2.4 GHz and their performances are compared with each other for several films with different sheet resistivities. Wire-grid models based on the moment method are applied for the n...

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...

A novel approach to broadband log-periodic antenna design is presented, where some of the most powerful evolutionary algorithms (EAs) are applied and compared for the optimal design of wire log-periodic dipole arrays (LPDA) using NEC (Numerical Electromagnetics Code). The target is to achieve an optimal antenna design with respect to maximum gain, gain flatness, Front to Rear ratio (F/R) and SW...

For polarization measurement of terahertz (THz) electromagnetic radiation we conventionally have been using a set of wire-grid polarizers. In the THz time domain spectroscopy (TDS) measurements, such a method requires twice of the time-delay scans, which is time consuming and can be the origin of the systematic error caused by the intensity fluctuation of laser. In addition, the efficiency of a...

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...