volume | PIER Journals

Abstract

In this communication, conceptual design guidelines for a tri-band dual sense circularly polarized ceramic-based antenna is explored. An asymmetrical S-shaped aperture is used to stimulate the ring-shaped ceramic. Some exclusive features are obtained in the designed antenna: (i) creation of five different hybrid modes (HEM_11δ, HEM_11δ+2, HEM_12δ-like, HEM_12δ, and HEM_13δ) is helpful for getting dual wideband impedance bandwidth; (ii) proposed aperture assists in achieving CP waves in three different frequency ranges with two different senses. Its experimental results confirm the simulated outcomes. The proposed antenna is operated within the dual-frequency ranges i.e. 2.2-4.19 GHz and 4.74-6.11 GHz, respectively. The measured 3-dB axial ratio is achieved in three different frequency ranges within the operating band i.e. 2.71-2.98 GHz, 3.6-3.79 GHz, and 5.5-5.81 GHz, respectively. The proposed antenna design is left-handed circularly polarized (LHCP) in the first and third frequency ranges, while it is right-handed in the second one. These features, along with broadsided far-field patterns, recommend the proposed antenna design for potential application in WLAN (2.4/5.5 GHz) and WiMAX (3.3/5.0 GHz) wireless networks.

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Dr. Anand Sharma

Dr. Gourab Das

Dr. Ravi Kumar Gangwar