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helix antenna hfss simulation
Look like a DNA double-helix structure. The problem is you used a infinitely thin , continuously bending face. It will make trouble for meshing.
Better to use an object model. Rsing up in the same way.
how to select capacitor
Capacitor is not working in conducted mode. So pay attention to rated voltage not current. It should be at least 2 times of the voltage apply to. Capacitor will lower down the voltage drop, but it would not provide the surge current needed.
The ESR should be less than 1...
In *1.jpg, the current flow from left side to the right. Q3 is a switch, Q4 is the control device.
Are you sure Q3 is the right FET device? I think the arrow should be upside-down.
You can use I/O port to control it. But normally high level is on, low level is off. Because we dont' want to...
circuit reading?
NTC, is negtive temparature component. The resistance is inverse to the temperature . When the temperature is low enough the first transistor will conduct and trigger the second conductor to power the speaker. At the same time , the capacitor between speaker and first...
parameter in PA
1)For PA forward isolation, it means when the PA is shutdown (no power supply), the power coupled from input to output. It's used in GSM handset power amplifier module filed.
He asks if the impedance of microstip line dont change with the length.
Of course it's not.
Dont mess it with serial resistors. It's different. The impedance means the ratio between Voltage and current on the line.
I'm tired of waiting for HFSS to complete the simulation and shaking my mouse to see if the computer is not actually deadlocked. My computer hardware, CPU, Memory capacity can never meet the requirement of complex structure numerical computation.
They boast Cloud Computing would be the future...
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