Three Element YAGI Antenna for the 20- meter Band

The publication is devoted to the memory of UR0GT.

Credit Line: Forum from:

www.cqham.ru

By: Nikolay Kudryavchenko, UR0GT

Below described three elements YAGI for the 20- meter Band. Model of the YAGI was simulated by UR0GT. The antenna has very high gain- almost 14.4- dB at central frequency 14.15- MHz. Antenna covers all 20- meter band with SWR 2.5: 1.0 at the edges. Figure 1 shows design of the antenna. Antenna is fed by a coupling loop. It makes the antenna safety at lighting season and increasing the broadband range of the antenna.

By playing with dimension of the coupling loop the antenna may be matched with any coaxial cable- 50- 75- 100- Ohm.

Figure 2 shows Z of the antenna. Figure 3 shows SWR of the antenna. Figure 4 shows DD of the antenna.

Simulation was made at the antenna height 22 meters above the real ground. However you may play with MMANA file to obtain optimal antenna dimension for installation at your real location.

Antenna may be scaled to another ham HF- VHF- UHF band.

The MMANA model of the Three Element YAGI Antenna for the 20- meter Band may be loaded: http: //

www.antentop.org/020/3el_yagi_ur0gt_020.htm

Figure 1 Three Element YAGI Antenna for the 20- meter Band

www.antentop.org

Page- 50