Electromagnetic characteristics of superquadric wire loop antennas

Characteristics of Electromagnetic Coupling with A Wire Through Enclosure

Electromagnetic interference can be easily coupled into metallic shielding enclosure that is penetrated with a conducting wire, which having a harmful effect on electrical and electronic devices. To sudy the characteristics, Finite Difference Time Domain (FDTD) is applied in both frequency and time domain for modeling the coupling of an incident electromagnetic pulse (EMP) with a conducting wir...

AM Loop Antennas

Erin Sanders, who plays the part of teenage inventor Quinn on Nickelodeon's "Zoey 101" show, with the author. She and her mother recently visited, and were impressed when this loop's little brother (also described below) was able to vastly improve very weak reception on KLBJ Austin (230 miles away) on an average radio. Used with a good radio, this loop is able to receive WWL 870 New Orleans, at...

Small Loop Antennas

Log-Periodic Loop Antennas

The Log-Periodic Loop Antenna with Ground Reflector (LPLA-GR) is investigated as a new type of antenna, which provides wide bandwidth, broad beamwidth, and high gain. This antenna has smaller transverse dimensions (by a factor of 2/π) than a log-periodic dipole antenna with comparable radiation characteristics. Several geometries with different parameters are analyzed numerically using ESP code...

Radiation Characteristics of Thin-Wire V-Antennas Excited by Arbitrary Time-Dependent Currents

This papaer studies, from the point of view of the traveling-wave approach, the transient radiation by V-antennas including the dependence of the maximum directivity on the interior angle, on the length of the arms and on the characteristics of the exciting pulse. As particular examples, the cases when the antenna is excited by a harmonic signal and a gaussian pulse are analyzed and the results...