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

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View

I am interested in medicinal chemistry field, which books are highly recommended to learn from?

I am at the beginner level in drug design and drug discovery, and I am interested to learn more about this field. Which books are highly recommended to start from and gives me all essential...

02 March 2021 8,437 2 View

Please suggest a good text book for "Research Methodology in Life Sciences". Which book would be good for PhD Scholars?

Please provide Book Title and author name

02 March 2021 9,059 3 View

Could any one guide me, to write research proposal for grant? ?

We have one plant, the local people using this for controlling blood sugar, the toxicity and antidiabetic activity of the plant is not reported yet, please guide from whag should be the process ?...

02 March 2021 2,300 1 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

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 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