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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 28

 

DD of my Beverage Antenna with additional wire between feeding transformer and termination load at 15- Meter Band

 

  Figure 29

 

DD of my Beverage Antenna with additional wire between feeding transformer and termination load at 12- Meter Band

 

Last possibility to improve the efficiency of the Beverage Antenna could be increasing the height of the horizontal wire to 4- meters above the ground. In theory this way should bring to multi beam DD at the high frequencies bands (because the vertical wires of the antenna take part at creation DD) and to some difference of the antenna impedance from the impedance of the termination load. Figure 31 shows design of the Beverage Antenna with horizontal wire placed at height 4 meter above the ground.  

. Parameters of the antenna were simulated with NEC for MMANA. Table 4 shows the data for the antenna. Maxima gain is given to the radiation angle at where it is.

 

Theoretical data show that the antenna gain improved at all Bands. However because the antenna impedance not to be close to the impedance of the termination load there would difficulties with matching of the antenna at 12 and 10- meter Bands.

 

Figure 30

 

DD of my Beverage Antenna with additional wire between feeding transformer and termination load at 10- Meter Band

 

 

 

Figure 31

Beverage Antenna with horizontal wire placed at height 4 meter above the ground

 

 

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July 3, 2016 19:44

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