A Miniaturized and Circularly Polarized L-Shaped Slot Antenna for Ultra-wideband Applications
Maninder Singh1, Dhawan Singh2, Gurpreet Kumar3, Rajeev Kumar4
1Maninder Singh, Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India.
2Dhawan Singh*, Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India.
3Gurpreet Kumar, School of Electronics and Electrical Engineering, Lovely Professional University, Punjab, India.
4Rajeev Kumar, Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India.
Manuscript received on November 15, 2019. | Revised Manuscript received on November 23, 2019. | Manuscript published on November 30, 2019. | PP: 2033-2039 | Volume-8 Issue-4, November 2019. | Retrieval Number: D7707118419/2019©BEIESP | DOI: 10.35940/ijrte.D7707.118419
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A miniaturized microstrip-fed, wideband and circularly polarized L-shaped slot antenna is designed for ultra-wideband applications. To realize L-shaped slot antenna with wide impedance bandwidth, a stub of size 10.7 mm2 is added to a rectangular shaped slot of the ground plane. The position of the feedline is optimized to attain wide circular polarization bandwidth. The proposed antenna size is very small i.e., 25×25 mm2. A prototype of the design is fabricated and measured. The axial ratio bandwidth (ARBW< 3 dB) of 2.2 GHz (from 6.2 GHz to 8.4 GHz) and the impedance bandwidth (S11<-10 dB) of 7.4 GHz (from 2.5 GHz to 9.9 GHz) is achieved by the proposed design. Moreover, the antenna achieves a stable radiation pattern and a gain of more than 2.8 dBi over the complete ARBW. The advantages of the structure are miniaturized design, having wide impedance bandwidth, and broad ARBW.
Keywords: Axial Ratio Bandwidth, Circular Polarization, Slot Antenna, Ultra-Wideband Antenna.
Scope of the Article: Distributed Mobile Applications Utilizing IoT.