of the both antennas is simple. A SWR- meter or HF- bridge (see
is connected to feed points of the tuned antenna. Gradually shorten
moustaches (symmetrically each moustache) of the antenna to minimum
SWR or when antenna input impedance is just active (have no reactance)
at needed frequency. At shortening moustaches the moustache wires
roll up to a little coil.
10-meters Band Window Dipole Antennas with Capacitive Loads
parameters of the antennas (copper, wire in 1-mm (18- AWG) diameter) were simulated with the help of MMANA. Figure 13 shows input impedance of the antenna
shown in Figure
11. Theoretical input impedance of the antenna is 22-
Ohms. Practically measured input impedance of the antenna was
30- Ohms. Losses in neighbor objects add the 8 Ohms. Theoretical
gain for the antennas is near 1,5- 1,7 dBi.
Figure 12 A window dipole antenna with capacitive loads of up or down installation