Implementation of double-layer loaded on octagon microstrip yagi antenna

Kamelia Quzwain (Institut Teknologi Telkom Jakarta)
Alyani Ismail (Universiti Putra Malaysia)
Yudiansyah Yudiansyah (Institut Teknologi Telkom Jakarta)
Nadia Media Rizka (Institut Teknologi Telkom Jakarta)
Aisyah Novfitri (Institut Teknologi Telkom Jakarta)
Lia Hafiza (Institut Teknologi Telkom Jakarta)

Bulletin of Electrical Engineering and Informatics
Vol 10, No 6: December 2021

A double-layer loaded on the octagon microstrip yagi antenna (OMYA) at 5.8 GHz industrial, scientific and medical (ISM) Band is investigated in this paper. The double-layer consist of two double positive (DPS) substrates. The OMYA is overlaid with a double-layer configuration were simulated, fabricated and measured. A good agreement was observed between the computed and measured results of the gain for this antenna. According to comparison results, it shows that 2.5 dB improvement of the OMYA gain can be obtained by applying the double-layer on the top of the OMYA. Meanwhile, the bandwidth of the measured OMYA with the double-layer is 14.6%. It indicates that the double-layer can be used to increase the OMYA performance in term of gain and bandwidth.