MatLab script to read foF2, fxI, foE and foEs from inosonde SAO-file?

From most Digisonde ionosondes I can download SAO-files containing all the measured and derived values. I only need foF2, fxI, foE and foEs as function of time. Does anyone have a MatLab script to...

31 December 2015 495 3 View

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How can I calculate the precise (elliptical) polarization of the downward characteristic (ordinary and extraordinary) waves in ionospheric (magneto-ionic) radio wave propagation? Input parameters...

08 September 2015 5,202 2 View

Any antenna and propagation researchers that will be at EuCAP 2015 in Lisbon?

Are there any researchers on antennas and propagation here that will also visit EuCAP 2015 in Lisbon?

02 March 2015 1,672 0 View

How do I model an antenna above an underground metal plate in NEC4.2 or CST?

I would like to know how to model an antenna above an underground metal plate in NEC4.2 or CST? I need such a model to find out what is the influence of a metal plate of 21 x 21 meters that is...

02 March 2015 1,098 8 View

Who first described/published the three antenna method?

I recently published a paper in which I extend a new antenna measurement method with the three antenna method. However, I could not find to whom I had to contribute the "invention" of the three...

03 April 2014 8,931 0 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

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 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

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 View

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Compact antenna for the frequency range 1 MHz-5 MHz?

Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...

27 February 2021 7,710 4 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