Yes Cecil, a cardioid pattern ,which cannot produce zero radiation at the
rear 180 degrees of the feed point.
Remember we started of with a figure 8 or two balloon pattern so for total
reversal of radiation the front lobe
must finish up as a perfect circle . Said another way, the two ballons are
merged thus making a larger single balloon
Best Regards
Art



"Cecil Moore" wrote in message
...
wrote:
Richard
I looked thru The ARRL antenna book and I cannot find
any antenna let alone the two element phased array
that showed ZERO radiation to the rear of the feed point.

In my ARRL Antenna Book, 15th edition, page 8-6: Two phased
verticals with 1/8WL spacing and phased at 135 degrees shows
a perfect cardioid with zero radiation in a direction 180
degrees from the direction of maximum gain, i.e. directly
to the rear.
--
73, Cecil http://www.qsl.net/w5dxp

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