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Beverage Antenna. Theoretical Look on Practical Result.

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ANTENTOP- 01- 2016 # 020

Beverage Antenna. Theoretical Look on Practical Result.

 

 

 

Figure 21

Beverage Antenna with additional wire between feeding transformer and termination load

 

 

Table 3

 

Data for Beverage Antenna placed at 1.8 meter above the Ground with additional wire between feeding transformer and termination load (Figure 21), simulated with NEC for MMANA and measured practically

by SWR- Meter of IC- 718

 

Band

160

80

40

30

20

17

15

12

10

 

Z

2459-j160

374-257

618-283

466-64

534-13

395+108

586+46

379+259

411+82

 

SWR

5.49

1.9

1.85

1.16

1.19

1.33

1.32

1.89

1.23

 

Gain

-26

-12

-9

-7.7

-5.2

-4

-2.53

-2.3

0.2

At Vertical degree

36

65

72

64

54

51

48

45

42

SWR by IC-718

1.2

1.0

1.1

1.1

1.0

1.0

1.0

1.0

1.0

 

 

Theoretical data show that the antenna gain a little improved (above 160- meter Band where some known inaccuracy at simulation is happened) at the configuration. Below Figure 22 to Figure 30 show DD of the Beverage Antenna at the 160, 80, 40, 30, 20, 17, 15, 12 and 10- meter Bands in the vertical plane.

 

Feedline with matching transformer is on the left side and the termination resistor is on the right side of the figures. As you can see from the Figure 24 - Figure 30 the DD of the

Beverage Antenna with additional wire between feeding transformer and termination load looks better compare to my classical Beverage Antenna shown at Figure 1.

 

Theoretical DD at 160 and 80 has more radiation to zenith compare to Beverage Antenna shown at Figure 1. My opinion was that the antenna began work better the classical variant (Figure 1).

 

 

 

 

 

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September 4, 2016 0:12

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