Feeding in Quadrifilar Antenna

[ping-pong]

Hi,
I am working on the design of quadrifilar antenna. I wanted to know whether the feeding is provided to both the loops(i.e. smaller and larger) in case of dual feed with phase quaduature. if feeding is provided to both the loops than how to provide 90 degrees phase shift. is there any extra device to be attached. waiting an early reply

 

[unkarc]

Hi,

Please read very carefully Chapter 22 of Reflections 2 ( **broken link removed** ) because the answer should turn out from Section 22.7 (page 22-11) and Section 22.9 (pages 22-13&14).

You can find further info on the feeding at **broken link removed**

Sorry that I cannot give you further practical advice because I did not have any experience on this very interesting antenna.

unkarc