Correction: picofarads not picocoulombs. Thanks to @joaopaulocoelho5401 for pointing that out. If you notice some other errors, please call my attention to it. Thanks.
Very, very nice video. Just a note that the capacitance is measured in fardads. Maybe you can start a series of RUclips videos where the goal is just to simulate classic electromagnetism situations using CST since, on youtube, you can only find more advanced stuff. Electrostatic and magnetostatic situations usually solved analytically in a classroom such as a the E field promoted by a charged sphere, the magnetic field and electric field on different regions on a DC current conducting wire, and so on...
@@pierregirard4850 Hi. The model C=eA/d is an approximation by neglecting the fringe effects that take place at the capacitor armatures boundary. One of the simulations performed in CST led to a result very close to the one predicted by the above model by considering the volume defined by the capacitor plates as the boundary conditions for solving the Maxwell equations. In this case, the electric field lines considered are just the ones within the capacitor plates. In a different simulation, the boundary of the problem is defined to be larger than the volume defined by the capacitor plates. In this new context, the electric field lines that curl outside the plates are also considered. This will lead to an increased "effective" area of the plates and, therefore, the capacitance will increase. In short, it is OK that the two simulations lead to different capacitances since they consider different operating conditions.
Correction: picofarads not picocoulombs. Thanks to @joaopaulocoelho5401 for pointing that out. If you notice some other errors, please call my attention to it. Thanks.
what a video. You helped me prepare for my lab .
I'm glad it was of help.
Very, very nice video. Just a note that the capacitance is measured in fardads. Maybe you can start a series of RUclips videos where the goal is just to simulate classic electromagnetism situations using CST since, on youtube, you can only find more advanced stuff. Electrostatic and magnetostatic situations usually solved analytically in a classroom such as a the E field promoted by a charged sphere, the magnetic field and electric field on different regions on a DC current conducting wire, and so on...
I was disturbed by the pC too :) Why values between the way to calculate the capacitance are not the same? Capacitance should be the same each time.
@@pierregirard4850 Hi. The model C=eA/d is an approximation by neglecting the fringe effects that take place at the capacitor armatures boundary. One of the simulations performed in CST led to a result very close to the one predicted by the above model by considering the volume defined by the capacitor plates as the boundary conditions for solving the Maxwell equations. In this case, the electric field lines considered are just the ones within the capacitor plates. In a different simulation, the boundary of the problem is defined to be larger than the volume defined by the capacitor plates. In this new context, the electric field lines that curl outside the plates are also considered. This will lead to an increased "effective" area of the plates and, therefore, the capacitance will increase. In short, it is OK that the two simulations lead to different capacitances since they consider different operating conditions.
Thanks for pointing that out and also the suggestion. I'll keep that in mind.
Can you share the Power Point
I've added a link in the description. Do let me know if you're able to access it.
Can you show how to design circulator in 4.2-4.4 GHz
I don't know what a circulator is. If you could provide the link to a paper, I could look at it.
PIC simulation