What is metamaterial unit cell?
Unit cell is optimized to get negative refractive index using a Full wave 3D electromagnetic simulator. The proposed unit cell exhibits negative refractive index over 5.7GHz to 6GHz frequency band. The unit cell structure has low profile and occupies volume of 17x17x1 7mm 3.
How do you simulate a unit cell in CST?
When you open CST, Go to “MW & RF & Optical”, then you can go to “Periodic Structures”, then you can decide to have Unit Cell or Full Structure.
How are metamaterials used?
Potential applications of metamaterials are diverse and include optical filters, medical devices, remote aerospace applications, sensor detection and infrastructure monitoring, smart solar power management, crowd control, radomes, high-frequency battlefield communication and lenses for high-gain antennas, improving …
What is meant by metamaterials?
Metamaterials: A Definition – Metamaterials are artificially structured materials used to control and manipulate light, sound, and many other physical phenomena.
What are the types of metamaterials?
Electromagnetic metamaterials can be divided into different classes, as follows:
- Negative refractive index.
- Single negative.
- Hyperbolic.
- Bandgap.
- Double positive medium.
- Bi-isotropic and bianisotropic.
- Chiral.
- FSS based.
What are metamaterials used for?
Metamaterials are artificially engineered materials designed to induce customized properties in a material that originally does not exist. The metamaterial structures are obtained by making significant changes in internal material structure through different techniques.
Why do we use metamaterial?
The use of metamaterials in antenna design not only dramatically reduces the size of the antenna but can also improve other antenna parameters such as enhancing bandwidth, increasing gain, or generating multiband frequencies of antennas operation.
What is an example of a metamaterials?
Some examples of available metamaterials are negative index metamaterials, chiral metamaterials, plasmonic metamaterials, photonic metamaterials, etc.
How does a metamaterial antenna work?
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.
What is metamaterial structure?
Metamaterials are special one-, two- or three-dimensional artificial structures with electromagnetic properties generally not found in nature.
What is metamaterial based antenna?
What is metamaterial made of?
Metamaterials are composite materials typically composed of arrays of small metallic resonators structured on the microscale or nanoscale (McPhedran, Shadrivov, Kuhlmey, & Kivshar, 2011; Walser, 2003).
How to test the metamaterial unit cell?
While testing the metamaterial unit cell, it is advisable to use PEC (negative and positive x direction) and PMC (negative and positive z direction) boundary conditions and assign the wave-ports on the remaining sides (negative and positive y direction).
What are the boundary conditions for metamaterial unit cell?
Join ResearchGate to ask questions, get input, and advance your work. While testing the metamaterial unit cell, it is advisable to use PEC (negative and positive x direction) and PMC (negative and positive z direction) boundary conditions and assign the wave-ports on the remaining sides (negative and positive y direction).
Can HFSS simulate a periodic structure which extends to infinity?
I am using HFSS to simulate a periodic structure which extends to infinity in one direction and finite in other (n x infinity array) for s-parameters. I set the boundary condition on top and bottom to be PEC and master/slave on x-direction and assigned wave port excitation but it doesn’t work.
What is the periodic boundary condition for polarization dependent metamaterial (SRR)?
In simulation of polarization dependent metamaterial (SRR) we use a PEC (Perfect Electric Conductor) and PMC (Perfect Magnetic Conductor) to maintain the polarization of the incident beam. However we are not using any periodic boundary condition.