A Miniaturized and Circularly Polarized L-Shaped Slot Antenna for Ultra-wideband Applications | Zendy

Maninder Singh | Zendy; Dhawan Singh | Zendy; Gurpreet Kumar | Zendy; Rajeev Kumar | Zendy

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A Miniaturized and Circularly Polarized L-Shaped Slot Antenna for Ultra-wideband Applications

Author(s) -

Maninder Singh,

Dhawan Singh,

Gurpreet Kumar,

Rajeev Kumar

Publication year - 2019

Publication title -

international journal of recent technology and engineering (ijrte)

Language(s) - English

Resource type - Journals

ISSN - 2277-3878

DOI - 10.35940/ijrte.d7707.118419

Subject(s) - wideband , ground plane , stub (electronics) , physics , optics , microstrip antenna , bandwidth (computing) , circular polarization , microstrip , slot antenna , axial ratio , optoelectronics , electrical engineering , antenna (radio) , engineering , telecommunications

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

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