Abstract
A probe-fed stacked plate antenna with low VSWR is proposed for digital television terrestrial broadcasting applications. Based on standard rules for designing conventional microstrip antennas, the radiating plates are designed. To obtain 50 Ohm impedance matching, a rectangular stub is attached to one of the radiating edges of the main plate and is coplanar with the main plate. By tuning the stub, the input resistance and reactance can be easily determined. The method is used to design a probe-fed stacked rectangular plate antenna. Experimental results show that this design is capable of achieving an impedance bandwidth of about 7.6% with respect to the centre frequency of the antenna for VSWR<1.1 and a gain level of about 10dBi. The low VSWR and high gain make this element suitable for digital television terrestrial broadcasting applications.
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