A compact notched chamfered RDRA with edge grounding for wide-band application

In this paper, a compact RDRA has been introduced in which notched chamfered technique with edge metal plate on one side of DRA is used to enhance the bandwidth. The probe feeding is used to excite the DRA as it can be easily optimized by adjusting probe height and its location. The proposed antenna has a simulated impedance bandwidth of 89.20% wide i.e. 3.9GHz to 10.18GHz. (S
₁₁
<; - 10dB) and 3dB axial-ratio bandwidth of 13.16% i.e. from 7.31GHz to 8.34GHz. DRA is made up of dielectric 9.2 (Rogers TMM10) with loss tangent tan δ = 0.0022. The main purpose of this design is to miniaturize the DRA without any trade-off with its impedance bandwidth, gain and efficiency. Proposed design offers three different modes TM
_11δ
, TM
_01δ
, and TM
_21δ
at three resonance frequencies 4.1 GHz, 5.5 GHz and 7.2 GHz respectively.