mamali
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IICCEE said:I think it may use stack type.
Hi lupin,Lupin said:I'm involved in a design a probe fed stacked fix antenna at 13 GHz.. anyway, I'ld like to study articles about it as many as I can find..
If u have material, pleasse can u upload it? Thanks.
Anyway a basis doubt is the following:
Probe fed onfiugration can't be used for so high frequencies... is aperture coupling better isn't it?
Best regards
Lupin
Lupin said:I'm afraid that the performances can be corrupted for a probe-fed configuration at High Frequency cause of Vibration Analysis, dimensions tollerances..
For a Ground Station antenna u don't have this problem but for a satellite antenna it can be a drawback that might affect your antenna performances..
Another thing to say is that the probe might be broken cause of antenna vibrations.. an aperture coupled antenna doesn't have this problem...
What's your feeling?
Regards
Lupin
goxy said:I know for 15-20% bandwith of L-probe feed antenna not so high as you said.
And manufacturing process is not so simple besause you have fix plus L-probe feed. On 2GHz gap is about 3mm, on higher freq gap is smaller.
Also mechanical construction is not stable and besause charasteristic :scrambleup:
RGS
yuen_cityu said:Hi murti,
Thank you for your interest in L-probe fed fix antenna. If Prof. Luk knew someone talking about L-probe, he should be very cheerful. When I left City University of Hong Kong last year, they already found the method to reduce the H plane cross polarization. You had better to search paper if you want to know how to do this.
Regards,
Yuen
plasma said:Hi mamali
for improving the cross pol just print sheet of parallel wires and put it
above your antenna
I think that you can get a high cross pol -35db. low sidelobe -30db
very broadband and very good VSWR.and same beamwidth in E and H plane if you use scalar horn antenna.
RGZ
Lupin said:I'm afraid that the performances can be corrupted for a probe-fed configuration at High Frequency cause of Vibration Analysis, dimensions tollerances..
For a Ground Station antenna u don't have this problem but for a satellite antenna it can be a drawback that might affect your antenna performances..
Another thing to say is that the probe might be broken cause of antenna vibrations.. an aperture coupled antenna doesn't have this problem...
What's your feeling?
Regards
Lupin
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