ANTENTOP- 01- 2016 # 020
|
Beverage Antenna. Theoretical Look on Practical Result.
|
|
|
Figure 7
DD of my Beverage
Antenna at 20- Meter Band
|
Figure 8
DD of my Beverage
Antenna at 17- Meter Band
|
Figure 9
DD of my Beverage
Antenna at 15- Meter Band
|
Figure 10
DD of my Beverage
Antenna at 12- Meter Band
|
Of course
after I have found the theoretical data for my Beverage Antenna
I would like to improve the antenna efficiency. Most simple way
to improve the efficiency of a broadband Beverage Antenna is to
connect to the termination hot end an additional wire with length
that is not resonant for the used bands. To find the needed length
and possible practical configuration is a not simple task. But
I decided to do it. Additional wire in 7 meter length was connected
to the antenna load. Figure 12 shows the antenna. Parameters of the antenna were simulated with NEC for
MMANA. Table
2 shows the data for my antenna. Maxima gain is given
to the radiation angle at where it is.
|
Figure 11
DD of my Beverage
Antenna at 10- Meter Band
|
Figure 12
Beverage Antenna with
additional
wire at the termination end
|
www.antentop.org
|
Page- 35
|
|
|
|
|