Design and analysis of a compact triple-band circularly polarized meta-atom and stub loaded patch antenna for Bluetooth, WLAN and X-band applications.
This paper presents a compact triple-band meta-atom stub loaded meander shaped patch antenna. A dumbbell-shaped Double Negative (DNG) meta-atom is positioned on the ground plane to enhance the performance parameters of the proposed patch antenna. This antenna possesses overall dimensions of 12 x 15 x 1.524mm3. This is designed to resonate at 2.45GHz, 5.8GHz and 8.83GHz. Miniaturization of 93% is achieved using the proposed structure. The measured impedance bandwidths of 110MHz (2.4GHz – 2.51GHz), 730MHz (5.13GHz - 5.86GHz), and 1.83GHz (7.7GHz - 9.53GHz) are observed at 2.45GHz, 5.8GHz and 8.8GHz respectively. Gains of 2.7dBi, 3.5dBc and 4.34dBi are observed at the resonant frequencies. Efficiencies of 78.1%, 83.5% and 82% are observed at the resonant frequency. Moreover, the antenna is right hand circularly polarized at 5.8GHz. This antenna is a suitable candidate for Bluetooth, WLAN and X-band applications. Simulated and measured results are in good agreement.