Exercise
时间：04-10
整理：3721RD
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Hello.
I have this exercise which I cannot solve. Can anyone help or point out a site or an ebook? This is the exercise.
We must design an antenna (operation frequency f=30MHz) implemented with an array of horizontal dipoles k/2 that presents one single lobe in the radiation chart and in 30 degrees line with the ground. We want to find the gain G of the antenna.
Suggestion : Start by taking a single dipole located horizontal on the ground. Consider the ground to be perfect conductor (did I say that correct?). Then add more dipoles k/2 so that we will get only one lobe with maximum in the certain direction.
Thank you very much for your time.
I have this exercise which I cannot solve. Can anyone help or point out a site or an ebook? This is the exercise.
We must design an antenna (operation frequency f=30MHz) implemented with an array of horizontal dipoles k/2 that presents one single lobe in the radiation chart and in 30 degrees line with the ground. We want to find the gain G of the antenna.
Suggestion : Start by taking a single dipole located horizontal on the ground. Consider the ground to be perfect conductor (did I say that correct?). Then add more dipoles k/2 so that we will get only one lobe with maximum in the certain direction.
Thank you very much for your time.
Log Periodic antenna is a multi-dipole antenna. Here you can find how to calculate its gain that may help for your exercise:
http://www.salsburg.com/Log-Periodic...na%20design%22
I would recommend NEC2 software for simulation of this kind of antenna:
https://www.edaboard.com/viewtopic.php?t=56450