A Broadband Circularly Polarized Wide-Slot Antenna With a Miniaturized Footprint

Ubaid Ullah, Slawomir Koziel

Rannsóknarafurð: Framlag til fræðitímaritsGreinritrýni

36 Tilvitnanir (Scopus)


This letter presents a novel and simple feeding technique for exciting orthogonal components in a wide-slot antenna. In this technique, a rectangular bracket-shape parasitic strip is placed at the open end of the straight microstrip line to excite the fundamental horizontal and vertical components of the circular polarization (CP). The proposed technique - when employed in conjunction with the asymmetrical geometry of coplanar waveguide and a protruded stub from the ground plane - permits for maintaining axial ratio (AR) below 3 dB within a wide range in the C-band as well as a compact footprint of the antenna. All geometry parameters of the antenna are adjusted through rigorous EM-driven optimization to obtain the best performance in terms of footprint, impedance matching, and AR bandwidth (ARBW). The size of the proposed antenna is only 27 mm × 28.8 mm. The structure features a 62% impedance bandwidth (3.6-6.85 GHz) and ARBW of approximately 49% (3.6-5.93 GHz) with the average realized gain of 3.3 dB within the CP operating band. Numerical results are validated experimentally. A close agreement between simulation and measurement results has been observed.

Upprunalegt tungumálEnska
Númer greinar8506406
Síður (frá-til)2454-2458
FræðitímaritIEEE Antennas and Wireless Propagation Letters
Númer tölublaðs12
ÚtgáfustaðaÚtgefið - des. 2018


Publisher Copyright:
© 2018 IEEE.


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