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Erwin

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Everything posted by Erwin

  1. I want to build this antenna, so I have some questions/suggestions: 1. What is impedance of this antenna? Can it be connected directly to 50 Ohm cable? 2. What are dimensions of reflector and spacing between it and directors in simulation? 3. Length of the director's parts should be 31mm to change working frequency to 2.45 GHz. 4. If a copper wire is used, the antenna elements should be soldered together. 5. How about make simulation with straight "V" directors (each arm 61mm length, connected with angle 30 degrees)?
  2. Yes, it was too beautiful to be true.
  3. Hello, I found interesting article how to increase gain of biquad (double biquad) antenna by adding a director (second biquad in front of first). Article about that method by Dragoslav Dobricic (YU1AW): Link. According to a user of one of the Polish forums, a double biquad antenna with added director may have a gain of about 16dB (Link). Can you check this informations in simulation? Thanks.