Timeline for generic antenna tuner term: impedance matching vs real tuner
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Apr 2 at 16:46 | comment | added | hobbs - KC2G | @user10489 the tuning is so sharp because the antenna is so small (and because, at least if you're lucky, the losses are low), so the result is a high-Q filter. The same applies with any sort of antenna. The smaller you make it, the lower Rrad goes, the higher the ideal Q, and the sharper the tuning. | |
| Apr 2 at 4:52 | comment | added | user10489 | I think "no difference in principle" is wrong. The capacitor in the middle of the small loop has a dramatic effect on the antenna resonance, to the point that you end up sliding a narrow window across the band outside of which there is not even any reception. I don't think other impedance matches change antenna working frequency quite so dramatically, and in some cases not at all. | |
| Apr 1 at 11:48 | history | answered | hobbs - KC2G | CC BY-SA 4.0 |