Reason for mismatch/frequency shift between measured and simulated results at high frequencies?

What is the reason for mismatch/frequency shift between measured and simulated results at high frequencies apart from insertion losses of the connectors, fabrication tolerances, reflections...

06 July 2019 997 1 View

Difference between Magnetic Field Intensity and Surface Current Density?

Both of their units are A/m, yet both seem to be different! What is the difference?

05 June 2019 2,519 7 View

FeCl3.H2O in mL required to dissolve 1g of copper in 1 hour?

Hi, How many mL of FeCl3.H2O solution is required to just dissolve 1 g of copper in 1 hour? Please provide the chemical and mathematical equations too! With Regards, Suhas D.

09 October 2018 1,012 7 View

What is the PRACTICAL value of axial ratio for ELLIPTICAL POLARIZATION?

The practical magnitude of axial ratio for circular polarization can go upto 6 dB (0 dB

06 July 2018 2,311 11 View

Sources for heat loss in waveguide junctions like tees, couplers etc.?

The finite conductivity of the conductor is one source. Other is, if the junctions are mismatched. What could be the other sources? Hmmm...?

03 April 2018 7,934 3 View

Antenna parameters for 4G LTE Advanced Technology?

What are the antenna parameters required for 4G LTE advanced technology? Please explain in detail! 1. No. of Antennas (I believe it is 8*8 or 8*4). But why? 2. Radiation Pattern? 3. Beamwidth? 4....

11 December 2017 1,427 3 View

What is the relationship between antenna bandwidth and bit rate?

How much antenna bandwidth do I need to transmit 100 Mbps (4G) or let's say 1 Gbps (4G LTE) of data? What is the relationship between Hertz (cycles/second) and bits per second? Or, how many...

11 December 2017 1,754 6 View

What is the significance of HPBW and FNBW in an antenna?

What is the physical significance of Half Power Beam Width and First Null Beam Width of an antenna?

10 November 2017 5,100 5 View

What is a TENSOR?

I understand that vectors are a subset of Tensors. Can someone please define tensors in a simple manner? I read about tensors from quora and saw some videos too, but still couldn't grasp its inner...

04 May 2017 263 4 View

Was Hertz's findings NOT significantly influenced by the Maxwellian's?

03 April 2017 371 8 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

Is there any effect of different colours of light (white, red, yellow, blue etc.) on the rate of photosynthesis? If yes, why?

Light is inevitable for the process of photosynthesis reaction. Naturally sunlight plays the vital role for this process. Light may be of different colours like white, red, yellow, blue etc....

02 March 2021 7,890 2 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 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

Could anyone tell me what is the range of submillimeter wave?

There is confusion regarding the submillimeter-wave range. Many papers specify its range from 300GHz but some also consider its range from 100GHz. If I design an antenna on 122ghz what would I...

01 March 2021 516 7 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 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

How to improve and implement WBAN MAC and Radio modules under Castalia 3.2 ?

Hello researchers, Hello Castalia3.2 researchers I am a beginner with Castalia, I work on optimization of RFID systems used in wireless body networks. I simulated a WBAN with 10 nodes and one...

28 February 2021 400 1 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

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View