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clanon
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@eco32 you NEED to try CST...is very intuitive and fast...and better results... backfiring CIRCULAR PATCH should have better shape...LOBE
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add a rim and ring...
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PES (Styrofoam) low density...1.075-1.1 Dielectric Constant (almost NO LOSSES)
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http://www.radioamatoripeligni.it/i6ibe/turnhard/turnhard.htm
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i wasn't blaming anyone , just asking for YOUR opinion...
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without 90 degrees phase shift (at half wave center Feed)...two crossed dipoles are NOT Circular Polarized...
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https://www.wifi-antennas.com/topic/2548-catherine-antenna/
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without the delay is only two dipoles one Vertical the other Horizontal (Crossfeeding High Isolation BAD) @Harry36
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Circular pol means : there is 90 degrees delay between feeding points...to force a rotating 1/4 rotation on Each quarter wave (half dipole)...imho built in the reflector (strips)
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Looks like each one receives a different pol- at different timing... Anti-phase it seems LHCP and RHCP...
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Each one has a 90 degrees orthogonal difference . Polarization is the same but Phase is 90 degrees off ...
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probably for high band...(only directors) lower band MUST BE Tubes both crossed and combined on one output is 33 cm by 1,34 meters
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FR4 EATS 5ghz energy PES and copper tape would be MORE EFFICIENT . ALL METAL even better