Thanks to John who wrote about antenna coupling:
>The other case
>is for vertical arrays in which the radiation resistance of individual
>elements can drop well below 36 ohms. For 2 quarter-wave verticals spaced
>by a quarter wave and phased 90 degrees, one of the elements has a radiation
>resistance around 20 ohms. I use an eighth-wave spaced array in which
>the resistance of one of the elements drops under 10 ohms.
If anyone could inform where to find more information about antenna coupling
and impedance changes it would help us much in planning of feed systems of
our phased arrays.
73 to all !
Mika
OH8LAE
--
FAQ on WWW: http://www.contesting.com/topband.html
Submissions: topband@contesting.com
Administrative requests: topband-REQUEST@contesting.com
Sponsored by Akorn Access, Inc & KM9P
|