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With FEKO Lite you're stuck with the 500 triangles. To do a reflector antenna you'll need the full version, or you can try GRASP. There's a student edition that's free. I personally haven't used it so I won't be able to be any help, but a colleague of mine speaks highly of the tool.
If I remember correctly, vias are permitted only between similar layer types, no mix & matching. You're wasting your time with one anyway. Ansoft Designer's planar EM tool (Ensemble) doesn't handle CPW very well. I tried to model a finite ground CPW but I couldn't assign the ports properly as...
Re: US salaries declining?
I disagree with this statement. At present electronics is ushering in new and better ways to communicate as evident by the advancements in wireless technology, e.g. cell phones, VoIP, wireless networking, GPS, etc. Look how far, and ubiquitous, these...
ASK: Filter design in @DS
yuezi,
schematics (circuit simulator, e.g. Ansoft's Designer) are good for first pass design to get approximate dimensions. To physically implement and test your filter, the final dimensions should be taken from an optimized electromagnetic simulation. In your case...
I agree with loucy that HFSS is not the best tool for this task. You should try using a planar EM simulator for this, e.g. Sonnet, Momentum (Agilent), Empower (Eagleware), IE3D (Zeland), Ensemble (Ansoft), etc. Depending on how much detail you want for the mode information, Sonnet Lite may...
I hope you're not asking because you want to off someone, but are interested in your [family] safety: https://www.osha.gov/SLTC/etools/construction/electrical_incidents/eleccurrent.html
Cell phone charger
It's the same technology that makes your computer's power supply lighter and more efficient, or recharges the battery in your electric shaver: switching technology. Switching circuits do away with bulky transformers but have a high pitch (frequency) whine that's very...
Power is power; It doesn't matter if it's 110V @1A or 220V @0.5A. Sounded to me like the original question was asked to determine which is better. So my answer is a rhetorical question: Which is better, foot/pound/Fahrenheit or meter/gram/Celsius? The answer to both questions is the same...
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