IMPROVED Yagi with LONG DE, Parameter’s Best NEC-4 Value @ Relative Frequency F/F₀

IMPROVED Array with “STRETCHED” DE,

NEC-4 Data compared to [3] Data @ Design Freq, F/F₀ = 1: fmt NEC/ [3]

Parameter

--

F/F₀

Gain

9.57 dBi

0.9900

9.44/9.4 dBi

FBR

6.17 dB

0.9780

5.39/5.6 dB

VSWR

1.36

0.8945

6.54/2.49

Z_in @ VSWR

36.9 − j1.2 Ω

0.8945

49.5 + j107.7 Ω/22.3 + j15 Ω

IBW

0.8255 - 0.9375 (11.2%)

n/a

HPBW

E-plane

53˚/66˚

H-plane

71˚/84˚

AGT

0.99706 - 1.00766

0.99775