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http://dx.doi.org/10.5762/KAIS.2010.11.1.085

A Switchable Circularly Polarized Microstrip Antenna using Asymmetric U-shaped Slotted Ground Structures  

Lee, Dong-Hyo (Dept. of Computer and Radio Communications Eng., Korea Univ.)
Yoon, Won-Sang (Dept. of Computer and Radio Communications Eng., Korea Univ.)
Han, Sang-Min (Dept. of Information and Communication Eng., Soonchunhyang Univ.)
Pyo, Seong-Min (Dept. of Computer and Radio Communications Eng., Korea Univ.)
Kim, Young-Sik (Dept. of Computer and Radio Communications Eng., Korea Univ.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.1, 2010 , pp. 85-91 More about this Journal
Abstract
In this paper, a new microstrip antenna using asymmetric U-shaped slotted ground is proposed for a switchable circular polarization sense. The proposed antenna is achieved a circularly polarization from orthogonal E-field distributions with 90 degree phase difference due to the asymmetrical U-shaped slot. Moreover, the circular polarization sense of the proposed antenna can be easily switchable with changing the symmetric plane of the U-shaped slots. As a result, the proposed antenna is implemented by two PIN diodes with two different bias condition for ON/OFF states. The measured axial ratios are about 1.5 dB without the dependence of the polarization sense and 3-dB axial ratio bandwidth are achieved 29 MHz with respect to about 1.2 % at 2.46 GHz operating frequency.
Keywords
Microstrip Antenna; Switchable Circular Polarization; Asymmetric U-shaped Slot; Slotted Ground Plane;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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