Compact Broadband Circularly Polarized Slot Antenna Using Two Linked Elliptical Slots for C-Band Applications

Author

Mohammadi, Soheil ; Nourinia, J. ; Ghobadi, Ch ; Pourahmadazar, Javad ; Shokri, M.

Author_Institution

Dept. of Electr. & Electron. Eng., Urmia Univ., Urmia, Iran

Volume

12

fYear

2013

fDate

2013

Firstpage

1094

Lastpage

1097

Abstract

A compact broadband circularly polarized elliptical slot antenna (CPESA) composed of two linked elliptical slots is presented. In order to realize the proposed CP antenna, two rectangular stubs are embedded in the feedline structure to excite two orthogonal E vectors. By embedding two rectangular stubs in the feedline structure and removing of four rectangular slits from the ground plane, the return loss and the axial-ratio (AR) bandwidths are noticeably increased. The designed CPESA with the compact size of 20 × 20 × 1 mm³ operates over the frequency band between 4.3-8 GHz (60%) for and exhibits a 40% (4.3-6.5 GHz) CP bandwidth. Throughout this letter, the design process of the proposed antenna is presented and discussed in detail .

Keywords

antenna feeds; broadband antennas; slot antennas; C-band application; CP antenna; CPESA; axial-ratio bandwidth; circularly polarized slot antenna; compact broadband antenna; feedline structure; frequency 4.3 GHz to 6.5 GHz; orthogonal E vector; rectangular stubs; return loss; two linked elliptical slot antenna; Antenna feeds; Antenna measurements; Bandwidth; Impedance; Slot antennas; Axial ratio; C-band; elliptical slot antenna; microstrip antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2013.2280457

Filename

6588557