How orthogonal modes are generated in antenna?

What is the physics behind the generation of orthogonal modes in antenna to ensure circular polarisation? Please suggest your answers. Thank you.

31 December 2017 3,779 3 View

What does the modern society expect from Antenna?

The use of antenna and it's credibility has gone so high. From a researcher point of view it is quite important to know what is the future of antenna? What people (society) need from antenna? What...

10 November 2017 7,114 3 View

How we can apply FDTD or FEM method for modelling of an antenna ?

Can any one please suggest me the procedure for applying FDTD or FEM (or any other) method on modelling of a rectangular/cylindrical shape (3-dimensional) antenna as well as to get other...

06 July 2016 4,005 5 View

What is Co-Polarization and Cross-Polarization in terms of both E-Plane and H-Plane in HFSS ?

Hi, I have little confusion about E-Plane Co-Pol and Croos-Pol, H-Plane Co-Pol and Cross-Pol. How we can find those in HFSS ? If any one have solution kindly suggest me. Thanking You. Sounik Kiran

02 March 2016 7,244 17 View

Can we import a random image (JPEG or any format) in to HFSS ?

I want to insert a random shape. Can I import that image to HFSS ? Apart from this kindly suggest me, how to create 3D elliptical shape in HFSS ? Thanking You. Sounik Kiran

01 February 2016 8,472 0 View

How can I measure Axial Ratio of a Dielectric Resonator Antenna ?

I want to measure the axial ratio (Not in simulation software but with the fabricated model). Kindly suggest me the steps.

31 December 2015 1,294 6 View

Can we get constant gain for an antenna operating over an Ultra Wideband range?

31 December 2015 1,578 9 View

Can I use the solution frequency beyond the bandwidth range ?

I have designed an antenna which is operating in certain range but the solution frequency is beyond that range...If I am changing the solution frequency in to that bandwidth range then the...

09 October 2015 3,918 6 View

What is the difference between Returnloss(dB) and S11(dB) ?

Actually some research papers have written Returnloss(dB) and some others have written S11(dB). Couple months back I had seen there was an article in IEEE which has given the clarification. If any...

07 August 2015 2,291 13 View

If research is published in conference proceedings, can it still be published in journals?

Also if further improvements have done as compared to conference paper and the detail analysis is mentioned.

04 May 2015 1,575 1 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein?

Hi In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein? I got this error in the add-ion stage: Fatal error "./ amber99sb-ildn-HHH.ff / force...

01 March 2021 8,747 4 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

Has anyone used the Illumina ITS1 primer sets?

Hi everyone, Illumina provides a list of primers to amplify with high taxonomic coverage the ITS1 region for further fungal sequencing, but I cannot find the exact amount necessary of each...

25 February 2021 6,969 3 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View