Electrically Small, Superdirective, and Superconducting AntennasHarold Wheeler, in his classic 1947 papers, created the fi eld of electrically small antennas. This fi eld has long been important for frequencies below roughly 1 GHz, where a half-wavelength is about 6 inches. These electrically small antennas have characteristics in common that limit performance: low radiation resistance, high reactance, low effi... | | Metamaterials: Theory, Design, and Applications
Metamaterials:Theory, Design, and Applications goes beyond left-handed materials (LHM) or negative index materials (NIM) and focuses on recent research activity. Included here is an introduction to optical transformation theory, revealing invisible cloaks, EM concentrators, beam splitters, and new-type antennas, a presentation of general... | | Computational Electromagnetics for RF and Microwave EngineeringThe numerical approximation of Maxwell's equations, Computational Electromagnetics (CEM), has emerged as a crucial enabling technology for radio-frequency, microwave and wireless engineering. The three most popular 'full-wave' methods - the Finite Difference Time Domain Method, the Method of Moments, and the Finite Element Method - are introduced... |