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http://dx.doi.org/10.5909/JBE.2014.19.6.934

The Characteristics Analysis of Low Profile Meander 2-Layer Monopole Antenna  

Jang, Yong-Woong (Dept. of New&Renewable Energy, Gangdong University)
Lee, Sang-Woo (Antenna Development, ACE Tech. Ltd.)
Shin, Ho-Sub (Dept. of Electric Wave Eng., Kunsan National University)
Publication Information
Journal of Broadcast Engineering / v.19, no.6, 2014 , pp. 934-941 More about this Journal
Abstract
In this paper, we present a low profile 2-layered meander built-in monopole antenna for portable RFID reader using FDTD(Finite Difference Time Domain) method. The input impedance, return loss, and VSWR in the frequency domain are calculated by Fourier transforming the time domain results. The double meander 2-layer structure is used to enhance the impedance matching and increase the antenna gain. The measured bandwidth of the antenna is 0.895 GHz ~ 0.930 GHz for a S11 of less than -10dB. The measured peak gain of proposed low profile RFID built-in antenna is 2.3 dBi. And the proposed built-in antenna for portable RFID reader can offers relatively wide-bandwidth and high-gain characteristics, in respectively. Experimental data for the return loss and the gain of the antenna are also presented, and they are relatively in good agreement with the FDTD results. This antenna can be also applied to mobile communication field, energy fields, RFID, and home-network operations, broadcasting, and other low profile mobile systems.
Keywords
Monopole antenna; FDTD; RFID;
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