DDRR antenna help please
DDRR antenna help please
(OP)
Help! I am experimenting with a DDRR antenna for two meters because I need a low profile vertically polarized antenna.
I have seen several examples on the web but no tech data on how the dimensions are determined. The examples I have seen show a spacing above the ground plane of 2 to 4 inches. How do I calculate the optimum spacing?
Thanks
I have seen several examples on the web but no tech data on how the dimensions are determined. The examples I have seen show a spacing above the ground plane of 2 to 4 inches. How do I calculate the optimum spacing?
Thanks





RE: DDRR antenna help please
http://www.google.com/search?q=DDRR+antenna
Especially...
http://www.orionmicro.com/ant/ddrr/ddrr1.htm
http://www.orionmicro.com/ant/ddrr/ddrr2.htm
I also did a quick search on the USPTO website (www.uspto.gov), but I couldn't find any antenna patents by 'Boyer'. Maybe just missed it...
RE: DDRR antenna help please
randy