Parabolic Dish with BiQuad feeder |
Saturday, 12 September 2009 22:20 |
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A simple yet high gain directional antenna can be made from a Sky, Primestar, Galaxy, Foxtel or similar satellite / parabolic dish. A similar commercially made dish antenna can cost upwards of $200! The parabolic dish works by reflecting a wireless signal from the feeder (placed on the arm in front of the dish) into a long, narrow beam. Given a good line of sight (LOS) with few trees or buildings in the way, a directional antenna like this can broadcast and receive a wireless signal km's. A waveguide Can-tenna or biquad antenna can be used to feed the dish. BiQuad FeederParts Required:
Note that you don't have to use blank PCB for the reflector. You can use any material that's electrically conductive, can be electrically connected to the coax braid, and will reflect microwaves (ie, sheet brass or copper, any metal plate will do fine). |