hat
Enpedans Antre nan estrikti a antèn, gwosè a ak longèdonn nan fonksyone, mwatye onn antèn dipol ki pi enpòtan debaz yo, opinyon enpedans Zin lan nan = 73.1 + j42.5 (Ewòp). La Lè yo longè ki pi kout (3-5)%, li ka elimine kote eleman nan reaktans nan enpedans nan opinyon antèn se piman resistive, Lè sa a enpedans nan opinyon Zin lan 73.1 = (Ewòp), (nominal 75 om). Remake byen ke estrikteman pale, enpedans piman resistive D 'nan antèn lan se jis dwa an tèm de pwen frekans.
eng
Input impedance of the antenna structure, the size and the operating wavelength, half-wave dipole antenna is the most important basic, the input impedance Zin = 73.1 + j42.5 (Europe). When the length is shortened (3-5)%, it can be eliminated where the reactance component of the antenna input impedance is purely resistive, then the input impedance of Zin = 73.1 (Europe), (nominally 75 ohms). Note that strictly speaking, purely resistive input impedance of the antenna is just right in terms of frequency points.