Research gaps of metasurface absorber in THz range

Some research needs in metasurface absorbers for lowering radar cross section (RCS) in the terahertz (THz) frequency range are as follows:

Ten private universities in India with anechoic chamber facility:

Metasurfaces to revolutionize the way we communicate in the 6G and THz frequency bands

A metasurface is a two-dimensional array of subwavelength-sized resonant elements that can manipulate the phase, amplitude, and polarization of electromagnetic waves. The properties of these elements can be engineered to create a wide range of desired wavefronts, including beams, vortexes, and even cloaks. This ability to control the wavefront of a signal allows for the

Calculate Envelope Correlation Coefficient (ECC) in HFSS

Following are the steps to plot ECC vs Freq plot in HFSS calculated from S parameters: In project manager window right click on results and then select ‘Output Variables’. Provide Name to the parameter and then insert the expression: (mag(conjg(S(1,1))*S(1,2)+conjg(S(2,1))*S(2,2)))^2/((1-mag(S(1,1))^2-mag(S(2,1))^2)*(1-mag(S(2,2))^2-mag(S(1,2))^2)) Click on Add and then click on Done. Then again right click on results –>

MIMO Antenna Design

For designing a MIMO antenna following steps can be followed: 1. Design a single element antenna resonating at desired frequency and optimize the geometry to get desired antenna parameters such as gain, bandwidth, radiation pattern etc. 2. Extend the design to 2 elements by copying the previously designed geometry and placing it adjacently keeping the

Calculate Radar Cross Section (RCS) in HFSS

The steps to plot RCS vs Frequency: Set Up Radiation: Insert Far Field Setup –> Phi from 0 to 180 and Set “Step Size” to 10 degree. Also Set Theta from 0 to 360 and step size 1 degree. Results->Create Far Fields Report->Rectangular Plot –> Select “Monostatic RCS” and then “NormMonostaticRCSTotal”. In the Primary sweep

Extraction of metamaterial parameters in CST

Following are the steps to extract epsilon, mu, refractive index (n) in CST: Post Processing –> Template Based Processing –> S Parameters –> Extract Permitivitty and Permeability from S-Parameters. Select the S11 and S21 source Then evaluate the Result. The result plots will appear under Tables –> 1D Results

5G Research around the World

Names of the groups shown above are: European 5G PPP projects of Horizon 2020 5G Innovation Centre (5GIC) in UK NYU Wireless Center in US Giga KOREA project Chinese 836 project   Some of the companies are: Samsung Ericsson Huwaei Docomo

Software tools for antenna design and simulation

Some popular software tools used for antenna designing and simulation are: Ansoft HFSS CST Agilent ADS FEKO IE3D MATLAB

Hardware Fabrication of Planar Antennas

For printed antennas designed using HFSS following are the steps for antenna fabrication:- * Click Modeler in the Menu bar of HFSS and then click Export. *  Select the file type to be .dxf and provide a name to the file and location. * Keep in mind that HFSS will export 2D design of the