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Any particular type of antenna better at rejecting noise and for non-linear polarization ?

361 views 3 replies 2 participants last post by  ExDilbert  
#1 ·
By type I mean bowtie, hourglass, circular, square, yagi, ..
and by noise I mean anything other than a clean los, or perhaps 1edge or 2edge signla. I would like to include even unwanted reflections as noise.

Also, is any particular type better suited for circular or elliptical polarization as opposed to strictly horizontal polarization ?

Thanks!
 
#2 ·
Any particular type of antenna better at rejecting noise
In general, higher gain, narrower beam and better f/b ratio antennas will do better. More directors can improve the first two and better reflectors the third. Stacking horizontally and vertically can also help significantly. It's not really that simple though. It's best to refer to the detailed modelling graphs for a particular antenna to determine reception patterns and other characteristics.

is any particular type better suited for circular or elliptical polarization as opposed to strictly horizontal polarization
I assume you mean circular and elliptical polarization. In general, yagi worst, circular or square the best. For strictly better vertical polarization, a vertically oriented yagi would be best.
 
#3 · (Edited)
Thanks for your reply.
Stacking horizontally and vertically can also help significantly.
...
I assume you mean circular and elliptical polarization. In general, yagi worst, circular or square the best. For strictly better vertical polarization, a vertically oriented yagi would be best.
Are dual/twin loops same as stacking ? And besides gain does stacking improve beam width and f/b ratio ?
I did mean circular or elliptical You are right it would be circular and elliptical so that it works on both because some channels/stations use circular and some use elliptical.