Polar Plots For 2 X 5-Element Yagis

5 ele polar plot

Polar plot shows the clean beam pattern.

-3db points

Detail of the Half-power (-3dB) points

ANALYSIS of 5-ele144.ANT on 04-02-00 at 16:14

2X5-ele beams horizontal for 144 MHz
Free space symmetric
144.300 MHz
10 6061-T6 wires, millimetres

re = reflector
1005

de = driven element
956

di = director1
918

di1 = director2
918

di2 = director3
922

sp1 = space between re and de
450

sp2 = space between de and di
415

sp3 = space between di and di1
415

sp4 = space between di1 and di2
415

up = vertical spacing between antennas
3140

Wire Losses
0.04 dB

Efficiency
99.0%

Forward Gain
12.16 dBd

F/B
14.84 dB

Azimuth Beamwidth
48°

Elevation Beamwidth
18°

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ANALYSIS of 5-ele144.ANT on 04-02-00 at 16:14
2X5-ele beams horizontal for 144 MHz Free space symmetric 144.300 MHz 10 6061-T6 wires, millimetres
re = reflector	1005
de = driven element	956
di = director1	918
di1 = director2	918
di2 = director3	922
sp1 = space between re and de	450
sp2 = space between de and di	415
sp3 = space between di and di1	415
sp4 = space between di1 and di2	415
up = vertical spacing between antennas	3140
Wire Losses	0.04 dB
Efficiency	99.0%
Forward Gain	12.16 dBd
F/B	14.84 dB
Azimuth Beamwidth	48°
Elevation Beamwidth	18°