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HI,
I have a question that why we regard the conductivity in semiconductors both due to holes and as well as electrons.
the current density is nµ(electrons)+pµ(holes).
holes is a concept originated from electrons. when electrons move from one place to other we say current is produced. also...
What happens when positive gate voltage is applied to N-JFET?.. while applying a -gate voltage it reduces the pinch of voltage as it helps in increasing the depletion region?.. but what about gate voltage being positive? will it not suppress the depletion and increase the pinch off?
this is the problem because you are using the waveport perhaps. this doesn't works inside the boundary. so your waveport should be just outside the radiation boundary.
Here below i am attaching a file that i have simulated with reference to the pdf attached. i am unable to make the PIFA resonating even. i have decreased the height between the lower substrate and the ground and even increased it.
i dont know what to do next. it is supposed to resonate at 402...
I have made an PIFA antenna with ground plane, substrate and patch. i have shorted the patch the ground plane and attached a feedline to it. i am confused now how to assign port excitation. whether it should be lumped or wave? how to ensure the area of excitation.
please help..
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