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    Biquad UHF Antenna Array

    Updated

    This relatively compact 4-element biquad array resonates at 434 MHz. The wires that connect the driven element to the reflector work as a two-wire transmission line that allows us to obtain an input impedance of 50 + j0 Ohm. So, this design can be fed directly with a 50 Ohm coax.  

    Bandwidth 4% (VSWR < 2)

    Gain 12 dBi

    Beamwidth 50°

    F/B 21 dB

    Slices H and V of the radiation pattern show that it is very symmetrical.

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