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  1. VicBSEE

    Amplifier for active microstrip antena

    I would keep the same antenna, add a MMIC amplifier followed by a stripline bandpass filter, since they are lower loss than LC BPF. Hope this helps. Victor
  2. VicBSEE

    RF ground planes layout

    Hi. From my experience, ground vias should be placed about every 1/10 lambda. Also, at frequencies aproaching 1GHz, the traces should be impedance matched to 50Ohms, or whatever system impedance you are using. AppCAD works well for this. You can download it, or request a CD from Agilent...
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