16 December 2021 4 7K Report

to design antenna with metamaterial

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Could you recommend some articles on Urban Transportation System optimization and Innovation?

Could you recommend some articles on Urban Transportation System optimization and Innovation?

13 August 2024 2,595 3 View

Is there any cases algae not using the nutrient from the wastewater and grow normally?

I am working on microalgae cultivation using waste water. The initial concentration of nutrients were less but the microalgae has achieved biomass growth of 2 g/L. The final concentration of...

08 August 2024 4,812 2 View

1. If I can quantize the atom using this hyperbolic spiral and classical physics, could nature do the same?

If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...

07 August 2024 5,343 2 View

Articles on" Gender disparities i leatherwork education"?

Articles on" Gender disparities i leatherwork education"

07 August 2024 2,500 0 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

What should I do with parameters that are not relate to my simulation in MyLake model?

I want to Estimate surface heat fluxes using MyLake, but I don't have all the initial values in model parameters section and other sections,is there a way?

04 August 2024 1,537 1 View

Dirty and clean?

Hi everyone I need a file with a dirty and clean potato image

04 August 2024 7,199 4 View

Why reactivity isn't increased with more empty spots in valence shell?

If from a geometric perspective the non-halogens, non-noble gases have more empty spots in their valence shell, and the filling/exiting of any of the empty spots in the shell constitutes a...

03 August 2024 4,787 2 View

Why is the molecule's orientation with an electric field affect polarizability?

Why is the molecule's orientation with an electric field affect polarizability? Electrons are diffuse enough to be independent with respect to orientation and effect of electric field on...

03 August 2024 7,843 1 View

Why don't d-orbitals split themselves, why does it take a ligand? why don't protons from ligand repel nucleus split d-orbitals?

why don't d-orbitals split themselves because of themselves without the presence of ligands? Electrons are indistinguishable. Why wouldn't it be more correct that protons from a ligand split the...

03 August 2024 3,589 3 View

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How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

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How to find ECC from radiation pattern on cst ?

i need to find ECC for 4-MIMO antenna using radiation pattern on CST

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How to use stress and displacement results from 1st stationary simulation as initial conditions for 2nd eigenfrequency simulation in COMSOL?

Dear All, I am trying to define the dispersion curves of a periodic unit cell in COMSOL Multiphysics with prescribed displacements. I am using two separate studies: - Study 1: Stationary, with...

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How to know the TM/TE modes in antenna design in CST studio?

How to know the TM/TE modes in antenna design in CST studio? Example: TM01 ,TM02 ,TM10, TM12, TM30 like this... how can identify the antenna is operate the above said mode? can any one explain...

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How to give excitation to Crossed Dipole Antenna in HFSS?

I'm attempting to simulate a crossed dipole antenna. For excitation, I've placed a lumped port along each dipole. However, the resulting radiation pattern is similar to that of a single dipole....

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HI, How to find phase response in CST?

I'm simulating a metamaterial unit cell. I want to plot Frequency Vs Phase Response. Also I want to extract permeability and permittivity. Kindly share the steps.

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How does the radiation box dimensions need to be calculated when making an antenna in HFSS?

#AntennaTheory

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Why do we use chiral metamaterial in the waveguide?

And if the purpose of use is achieved, what do we benefit from it?

09 June 2024 9,189 1 View

What is the maximum value of Divesity Gian in MIMO? For two antenna system its 10dB. As no. of antennna increse diversity gain increase or decrease?

Somewhere on the internet, it's reported the maximum diversity gain limit theoretically can be achieved is 10dB. Some papers said it increases with more antennae and some said it will decrease.

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Is it necessary that all element pattern of an adaptive array antenna (null-steering) have exact similar pattern?

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