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Journal Article
Design of the Planar Cross Dipole Reader Antenna for UHF RFID Systems
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- Authors
- J.-N. Lee, J.-H. Jung
- Issue Date
- 2012-05
- Citation
- Journal of Electromagnetic Waves and Applications, v.26, no.7, pp.962-972
- ISSN
- 0920-5071
- Publisher
- Taylor and Francis
- Language
- English
- Type
- Journal Article
- Abstract
- The planar dipole reader antenna using a dual polarization, which consists of two dipole radiating patches and Wilkinson power divider, is presented. The electric cross dipole is added to generate a symmetric radiation pattern and to compensate the high back radiation due to the shortened patches. From experimental results, the measured impedance bandwidth of the antenna (defined by -10 dB return loss) is 30 MHz (907 MHz-954 MHz, Korea standard = 917 MHz-923.5 MHz). Simulated isolation between the two input ports is over 35 dB. The measured gain of the proposed antenna is stable with frequency. The average gain is about 6.3 dBi.