A 2 elements yagi with a RADIATOR DIRECTOR configuration.
Above the azimuth pattern
Above the freespace elevation pattern
Above the SWR diagram bare in mind the antenna is 28 Ohms.
Above the Gain, Front to back and Front to rear response versus frequency.
For: DX portion 11 meter band
Antenna Type: 2el RADIATOR DIRECTOR YAGI
Designed by:
Boom length: 1,00 Meter
Gain: 6,56 dBI (@27,555 MHz)
FB <17 dB (H field)
FR <17 dB (H field)
Impedance: 28 Ohms.
SWR 2:1 > 850 KHz.
SWR 1:1,1 > 100 KHz.
The antenna has no reflector it has a director and a radiator.
ELEMENT DIMENSIONS:
ELEMENTS DIAMETERS ARE: 22mm and 18mm in diameter. The center part of the element is 2 meter long and is made from the 22mm diameter tubing. And the 18mm is for the rest of the element lenght.
Do not change diameters, if you need other dimensions, or if you want to scale this antenna to another frequency..
Please feel free to ask !
ELEMENT: DISTANCE LENGHT:
RADIATOR 0,000 5,449
DIRECTOR 1 1,000 5,066
FEEDING THE ANTENNA :
The antenna is 28 Ohms. You either need a Gamma-match (or equivalent) or you can use the DK7ZB match (2×75 1/4 wave parallel coax cables) in order to match the antenna. See DK7ZB website for furter details