Novel Compact and Wideband Tuning Fork Shaped DRA

In this paper, a novel compact and wideband tuning fork shaped DRA is presented. The augmented design resonates at 1.75 and 2.24 GHz and results in wide impedance bandwidth of 95% at 2.8 GHz. The effective dielectric constant is altered using three rectangular-shaped slots which leads to wide impedance bandwidth and the edge grounding technique is used to make geometry compact. The fundamental mode TEx111 is preserved in the modified geometry. Further, the surface area to volume ratio is enhanced by 0.51 which leads to improvement in bandwidth. The proposed design achieves a gain of more than 5.5 dBi and greater than 90% of radiation efficiency for the complete bandwidth of operation, making it useful for WLAN (2.4/3.6 GHz), WiMAX (2.3/2.5/3.4 GHz), most L-band and entire S-band applications.

Automated summary

This paper presents a novel compact and wideband tuning fork shaped dielectric resonator antenna (DRA) with augmented design to achieve wide impedance bandwidth. By altering the effective dielectric constant using rectangular-shaped slots and employing the edge grounding technique for compact geometry, the proposed design resonates at specific frequencies and offers a wide impedance bandwidth of 95% at 2.8 GHz. The modified geometry preserves the fundamental mode TEx111 and enhances the surface area to volume ratio, leading to improvements in bandwidth and performance. The proposed design demonstrates a gain of more than 5.5 dBi and a radiation efficiency of over 90% for a wide bandwidth of operation, making it suitable for various wireless applications.