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Admin
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Everything posted by Admin
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hRV=5mm,hVD=5mm ,R=1x130x320mm ,,,but why you use aliminium ...?? how do you solder it?
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>>>>more than that can"t be...!!!
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"if you want, I can make an antenna simulation without using PCB Substrate,in the air and with other dimensions...!!! "this would adapt to cutting with the CNC Machine...!!!
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,,,did you have CNC-Machine...??? If you do not use PCB substrate, the dimensions are different...!!!
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this file type is not good...?? biquad.dxf biquad.gbr
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,,,for measurements try using Corel Draw X4 Portable ,,,the distance between patches=73mm
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I do not think I have them anymore....!!! it's a long time ago...!!!
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,,,good,just try it...!!!
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,,, so the antenna sector with patches for 5,8GHz....????
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S11, S22 must be greater than -15dB S12, S21 must be greater than -26dB
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" with what kind of vibrators to be ...???
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"Well, but this antenna does not have good isolation between the ports, see S11.S21(S21,S22) in the diagram above...!!!! The antenna needs to be improved....!!!
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"what do you understand through closed / open circuit...??? "this is a monopole antenna placed in a truncated polyhedron reflector...!!!!
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Well, but D.Dobricic has done these simulations for a long time....http://www.qsl.net/yu1aw/ANT_VHF/obelisk_antenna.htm
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A simpler solution for getting a wide band panel antenna is this ... With some very good results...
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And yet, an ideal form would be this... ,,,or this...
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,,,,yes,this is a combination of corrugated horn-antenna and short backfire antenna...!!! ,,,this it"s corrugated horn...
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Antenna Beamwidth : Horizontal: 60° Vertical: 30°
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okay and these are the results of my simulation with approximate dimensions...
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"Thanks Pragata, but some dimensions are needed at the adaptation lines...!!!! and the distance between the patches...!!!
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,,,and here is a model sector antenna, made by the user Pragata...
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,,, it is advisable to round off the corners of the patches...
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,,,,these are the results of a first simulation, impedance adjustment for 50 ohm has to be done... MEDA is powered by 50 ohm SMA connectors
