hi all,
i am working on a rectangular spiral microstrip antenna. i am using coaxial feed, but the problem is, i am getting radiation in exactly opposite direction. i working with HFSS 10. Please help.
can you post a picture if your hfss design? because i think your feeding technique is wrong. and did you try applying a ground plane in your whole antenna, this would reflect the whole radiation in the direction opposite to it.
For this, insert a surface and just declare it infinite ground plane from the boundaries.
this is how it looks, i have applied ground but finite one. infinite ground is impractical. i have to fabricate this antenna.
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also this is the radiation pattern of above design..
and yes i did get radiation pattern above patch when i inserted infinite ground.
can you help me to get correct pattern without infinite ground?