Dual Band Scorpion-Shaped Antenna for 5.8 GHz ISM Band and X-Band Applications

This paper presents the design of a microstrip patch antenna with a ‘shorting pin’ technique. The proposed antenna design resonates at 5.8 GHz with an additional band at 8.9 GHz. The overall dimension of an antenna is
$15\ mm \times 12\ mm$
. The first proposed antenna design with the full ground and without a shorting pin did not meet our requirements. Then we added a shorting pin to get the required band of frequencies which effectively led to a more suitable value of resonance frequency. But still, it was not adequate. At last, we partially reduced the ground instead of full ground which gave us the resulting dual bands at 5.8 GHz and 8.9 GHz. The ISM and X-Band are covered in the resulting dual bands. The results of the proposed design showed a high gain and larger bandwidth, and it is cost-effective as well. The design of the proposed antenna is appropriate for ISM and X-Band applications.