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EMC lecture on RF field coupling, distance conversion and common antennas including a VNA experiment
In this live-streamed lecture within the "Electromagnetic Compatibility" module, we did a quick recap of the Hertzian (or electric) dipole and the Fitzgerald (or magnetic) dipole. Then, we discussed typical antenna parameters like the effective antenna length, the effective antenna area, the directivity or the radiation resistance for different types of antenna. We also looked at a small example of an interference analysis. Finally, we did some measurements with a simple dipole antenna and a logarithmic-periodic dipole antenna on a printed circuit board using a vector network analyser.
Lecture slides:
https://cloud.ovgu.de/s/rmDBzgykbsEdkeS
Chapter marks:
0:00:00 Welcome and introduction
0:04:41 Quick reminder of the dipoles
0:14:33 Magnetic dipole
0:19:13 Field impedance
0:28:27 Distance conversion
0:33:14 General antenna structures
0:41:57 Characteric values of some typical antennas
0:50:33 Example of interference analysis
0:58:19 Powering up the VNA
1:03:42 VNA introduction and calibration
1:18:22 Reflection coefficient of the dipole antenna
1:24:29 Transmission coefficient between two antennas
1:37:29 Co-polarization and cross-polarization
Original chat from Twitch:
Comrade__Sol: hello riacha1Cheer riacha1Eevee sydherPCB aromachiRunrun aromachiDance
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By In this live-streamed lecture within the "Electromagnetic Compatibility" module, we did a quick recap of the Hertzian (or electric) dipole and the Fitzgerald (or magnetic) dipole. Then, we discussed typical antenna parameters like the effective antenna length, the effective antenna area, the directivity or the radiation resistance for different types of antenna. We also looked at a small example of an interference analysis. Finally, we did some measurements with a simple dipole antenna and a logarithmic-periodic dipole antenna on a printed circuit board using a vector network analyser.
Lecture slides:
https://cloud.ovgu.de/s/rmDBzgykbsEdkeS
Chapter marks:
0:00:00 Welcome and introduction
0:04:41 Quick reminder of the dipoles
0:14:33 Magnetic dipole
0:19:13 Field impedance
0:28:27 Distance conversion
0:33:14 General antenna structures
0:41:57 Characteric values of some typical antennas
0:50:33 Example of interference analysis
0:58:19 Powering up the VNA
1:03:42 VNA introduction and calibration
1:18:22 Reflection coefficient of the dipole antenna
1:24:29 Transmission coefficient between two antennas
1:37:29 Co-polarization and cross-polarization
Original chat from Twitch:
Comrade__Sol: hello riacha1Cheer riacha1Eevee sydherPCB aromachiRunrun aromachiDance