تاريخ: 8/12/86
... 1- Left-Handed Material (LHM) 2- Negative Refraction 3- Surface Plasmon modes 4- Nonlinear Hystersis-like Behavior 5- Self-Phase Modulation ...
... 1- Left-Handed Material (LHM) 2- Negative Refraction 3- Surface Plasmon modes 4- Nonlinear Hystersis-like Behavior 5- Self-Phase Modulation ...
ECE 342: Electromagnetic Fields II Concepts: Maxwell’s Equations
... EM devices and systems - Can compute and analyze potentials and fields in time-invariant and low frequency EM devices and systems of various shapes and material compositions - Can evaluate capacitance, external and internal inductance, low frequency resistance and leakage conductance of EM structure ...
... EM devices and systems - Can compute and analyze potentials and fields in time-invariant and low frequency EM devices and systems of various shapes and material compositions - Can evaluate capacitance, external and internal inductance, low frequency resistance and leakage conductance of EM structure ...
ECE123 Homework 1 1. What is the name of the vector S that
... 2. What is the ratio of E/H for plane waves in free space? What is this ratio in terms of permittivity and permeability? This is called the wave impedance. Express its value in Ohms. What is the wave impedance of glass, which is a non-magnetic material that has a refractive index n=1.5? 3. What ...
... 2. What is the ratio of E/H for plane waves in free space? What is this ratio in terms of permittivity and permeability? This is called the wave impedance. Express its value in Ohms. What is the wave impedance of glass, which is a non-magnetic material that has a refractive index n=1.5? 3. What ...
Metamaterial antenna
Metamaterial antennas are a class of antennas which use metamaterials to increase performance of miniaturized (electrically small) antenna systems. Their purpose, as with any electromagnetic antenna, is to launch energy into free space. However, this class of antenna incorporates metamaterials, which are materials engineered with novel, often microscopic, structures to produce unusual physical properties. Antenna designs incorporating metamaterials can step-up the antenna's radiated power.Conventional antennas that are very small compared to the wavelength reflect most of the signal back to the source. A metamaterial antenna behaves as if it were much larger than its actual size, because its novel structure stores and re-radiates energy. Established lithography techniques can be used to print metamaterial elements on a PC board.These novel antennas aid applications such as portable interaction with satellites, wide angle beam steering, emergency communications devices, micro-sensors and portable ground-penetrating radars to search for geophysical features.Some applications for metamaterial antennas are wireless communication, space communications, GPS, satellites, space vehicle navigation and airplanes.