Antenna should be Single-sided or double-sided?
Is there any advantage in terms of radiation pattern? ( i am looking for omni-directional pattern)
i have this problem too
Well.. with double sided the thickness between radiator and GND will matter a lot.. this helps in bandwidth enhancement.. the advantage of single sided is ease of fabrication especially for flexible substrates, it will help you avoid the misplacing of the radiator (top side) over the GND (back side), cuz you are not going to use PCB machines any more when using flexible substrates such cloth.. the principle of GND is a reflector.. when simulating full GND microstrip antenna we put Et=0, means eliminating radiation to -ve Z direction => most of the pattern is in +ve Z.. search more on Coplanar monopole
Hope this helps
Nothing's been said about antenna type yet...
Of course the antenna type is very important in this regards.
A patch or a planar inverted-F antenna definitely needs a ground plane, when a printed dipole don't need any ground plane.
,,,can be double-plated PCB...
,,, no separate reflectors...!
and if its a wearable antenna, then the radiation pattern is going to be far from omni-directional
Dave
You can give a few pictures ...?
of what ? what dont you understand ?
if the antenna is on the body or within the clothing, the radiation pattern will be considerably distorted by the presence of the body
Dave
,,, perhaps you mean that ...
since plated thru holes are a PIA and u need a bunch of them...I would try very hard to NOT have metal antenna conductors on both sides of a flexible pcb. I would do it only if three was high power involved, or the metal thickness was so thin that there was too much antenna loss.
I want to design antenna for a wearable device . The substrate being used is flexible with very thin substrate ( 0.1mm or 4 mils )
The antenna type under consideration is Printed inverted F shape.
I thought on single sided the Ground plane can be on same side with rest of pattern. right? But with some compromise as suggested in above posts...
Can you all kindly guide in this regard?