Synopses & Reviews
Synopsis
This book develops the analytical theory of perfectly conducting and lossy metal, circular, round-wire loop antennas and nano-scaled rings from the radio frequency (RF) regime through infra-red and the optical region. It does so from an antenna theory perspective. It is the first time that all of the historical material found in the literature has appeared in oneplace. It includes, particularly, material that has appeared in the literature only in the lastdecade and some new material that has not yet been published. The text derives the input impedance, resonances and anti-resonances, the RLC circuit model representation, and radiation patterns not only of closed loops and rings, but also of loops and rings loaded randomly and multiply with resistive and reactive impedances. Every derivation is compared with simulations run in Microwave Studio (MWS). It looks carefully at the physical response of loop antennas and nano-rings coupled to a source at one point in the periphery and at such rings illuminated by a plane wave arriving from every different direction with the E-field in all polarizations. The volume ends with a brief look at polygonal loops, two dimensional arrays of nano-rings, and Yagi-Uda arrays.
Synopsis
Introduction.- Wave-Matter Interactions.- Perfectly Conducting Closed Loops.- Lossy Metal Closed Loops and Nano-Rings.- Split-Ring Resonators.- Multiple-Gap Ring Resonators.- Non-Toroidal Nano-rings.- Arrays of Nano-rings.- Fabrication of Nano-rings.- Applications.- Computations.
Synopsis
Details the theory and applications of ring antennas
Highlights the use of meta-materials for ring antennas
Includes MatLab codes for simulation of nano-rings