You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

When calculating efficiency, the software takes the power supplied by the source, in this case 100 watts, and compares it to the power radiated. You can actually see the power radiated in the video above by looking in the 4nec2 window for the "Radiat-power" information. This is different than the power being supplied by the source because of things like non-perfect conductors (I used aluminum), loads like inductors and capacitors (their is a capacitor in this model) and other items that 4nec2 lets me add to the model, like logical matching networks (L networks, pi networks, matching stubs, ect)

When calculating radiation efficiency (Radiat-eff.) line, the system takes all of the radiated power radiated in every individual direction, then averages this. This average will get you a number between 0 and 1. If the number is, say, 0.7037, then you have an efficiency of 70.37%.

Two very different methods to calculate efficiency, and these are done to show efficiency at two different points in the antenna system.

The DB

<blockquote data-quote="The DB" data-source="post: 621671" data-attributes="member: 21346">When calculating efficiency, the software takes the power supplied by the source, in this case 100 watts, and compares it to the power radiated.&nbsp; You can actually see the power radiated in the video above by looking in the 4nec2 window for the &quot;Radiat-power&quot; information.&nbsp; This is different than the power being supplied by the source because of things like non-perfect conductors (I used aluminum), loads like inductors and capacitors (their is a capacitor in this model) and other items that 4nec2 lets me add to the model, like logical matching networks (L networks, pi networks, matching stubs, ect)When calculating radiation efficiency (Radiat-eff.) line, the system takes all of the radiated power radiated in every individual direction, then averages this.&nbsp; This average will get you a number between 0 and 1.&nbsp; If the number is, say, 0.7037, then you have an efficiency of 70.37%.Two very different methods to calculate efficiency, and these are done to show efficiency at two different points in the antenna system.<a href="http://hittman.us" target="_blank">The DB</a></blockquote>

[QUOTE="The DB, post: 621671, member: 21346"] When calculating efficiency, the software takes the power supplied by the source, in this case 100 watts, and compares it to the power radiated. You can actually see the power radiated in the video above by looking in the 4nec2 window for the "Radiat-power" information. This is different than the power being supplied by the source because of things like non-perfect conductors (I used aluminum), loads like inductors and capacitors (their is a capacitor in this model) and other items that 4nec2 lets me add to the model, like logical matching networks (L networks, pi networks, matching stubs, ect) When calculating radiation efficiency (Radiat-eff.) line, the system takes all of the radiated power radiated in every individual direction, then averages this. This average will get you a number between 0 and 1. If the number is, say, 0.7037, then you have an efficiency of 70.37%. Two very different methods to calculate efficiency, and these are done to show efficiency at two different points in the antenna system. [URL='http://hittman.us'][COLOR=#000000]The DB[/COLOR][/URL] [/QUOTE]

Top Bottom