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

How to find natural frequency of a bridge from vehicle induced vibrations?

i have frequencies of bridge that are effected by mass of vehicle. the problem is when any vehicle pass the bridge it would add the its mass to the bridge mass ultimately mass of the bridge will...

22 February 2021 10,004 3 View

If the electron is a wave, then what is its nature? Is it an electromagnetic wave?

If the electron is a wave, then what is its nature? Is it an electromagnetic wave? Thank you very much,

17 February 2021 9,024 4 View

Are there papers on?

I'm looking for a papers concerning either Christianity or neopagan religions and social media. What role does social media play in the spread of these religious movements? Any suggestions on the...

15 February 2021 655 4 View

Is there a way to use waveguide ports for circular antenna design in CST?

Hi, whenever i use circular array i get this error "Waveguide ports must be aligned with Cartesian coordinate planes for the transient solver" Does anyone use circular array with waveguide ports?...

09 February 2021 3,609 8 View

How to model in HFSS or FEKO Free Space Material Characterization?

I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model...

09 February 2021 375 2 View

How can I prevent my switching power supply from sudden voltage increases ?

Hi Everybody, I'm currently using a 3kW AC/DC converter which gave 48VDC output(Switch mode power supply). The device is capable to deliver up to 62.5A current to the load. My application is a...

08 February 2021 7,642 4 View

Time series analysis of facial movements and verbal protocols ? What methods can I use to analyze the Data?

Hello, Scientists and Researchers, I have time-based data of Facial muscle movements and their related protocol coding of the verbal utterances (30 min). I have a total of 17 facial muscle...

07 February 2021 1,201 3 View

Distribution of modes fields ?

Hi, We find a specific distribution of electric fields in structure for different frequencies which can be seen using em solvers and known as modes. I would like to know how we can choose the...

04 February 2021 10,043 3 View