title: Compact circularly polarized truncated square ring slot antenna with suppressed higher resonances.
abstract: This paper presents a compact circularly polarized (CP) antenna with an integrated higher order harmonic rejection filter. The proposed design operates within the ISM band of 2.32 GHz- 2.63 GHz and is suitable for example for wireless power transfer applications. Asymmetrical truncated edges on a square ring create a defected ground structure to excite the CP property, simultaneously realizing compactness. It offers a 50.5% reduced patch area compared to a conventional design. Novel stubs and slot shapes are integrated in the transmission line to reduce higher (up to the third) order harmonics. The proposed prototype yields a -10 dB reflection coefficient (S11) impedance bandwidth of 12.53%, a 3 dB axial ratio bandwidth of 3.27%, and a gain of 5.64 dBi. Measurements also show good agreement with simulations.
authors.affiliation: Wireless Communication Centre, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia.
authors.forename: Mursyidul Idzam
authors.initials: MI
authors.lastname: Sabran
authors.affiliation: Wireless Communication Centre, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia.
authors.forename: Sharul Kamal
authors.identifier: http://orcid.org/0000-0003-4511-1989
authors.initials: SK
authors.lastname: Abdul Rahim
authors.affiliation: Wireless Communication Centre, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia.
authors.forename: Chee Yen
authors.initials: CY
authors.lastname: Leow
authors.affiliation: Advanced Communication Engineering (ACE) CoE, School of Computer & Communication Engineering, Universiti Malaysia Perlis, Arau, Perlis, Malaysia.
authors.forename: Ping Jack
authors.initials: PJ
authors.lastname: Soh
authors.affiliation: Intel Microelectronics, Halaman Kampung Jawa, Penang, Malaysia.
authors.forename: Beng Wah
authors.initials: BW
authors.lastname: Chew
authors.affiliation: Department of Electrical Engineering, Katholieke Universiteit Leuven, Leuven, Belgium.
authors.forename: Guy A E
authors.initials: GA
authors.lastname: Vandenbosch
mesh_terms: D003198:Computer Simulation; D017097:Electric Impedance; D004867:Equipment Design / Q000379:methods*; D008962:Models, Theoretical; D015203:Reproducibility of Results; D059015:Wireless Technology / Q000295:instrumentation*