A Method to Reduce the Back Radiation of the Folded PIFA Antenna with Finite Ground
Keywords:
Back radiation, folded PIFA antenna, resistors, inductors loadingAbstract
A novel method, named the resistors and inductors loading, is proposed in this paper to reduce the back radiation of the folded PIFA antenna with finite ground. With different loading schemes (i.e., resistors loading, inductors loading, and resistors and inductors loading), variable reduced back radiation and gain can be achieved. However, there is a compromise between the gain and back radiation and it can be chosen based on the specified applications. A prototype with resistors loading is fabricated and measured to verify the proposed design. Measured results agree well with the simulated results.
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References
K.-L. Wong, Compact and Broadband Microstrip Antennas, John Wiley & Sons, INC, 2002.
J. Noh, M. Heo, and J. Jeon, “Meandered planar inverted F-antenna for PCS mobile phone,” IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, Honolulu, Hawaii, April 2005.
Q. Rao, G. Wen, and D. Wang, “A multiple folded strip antenna for handset devices,” 24th Annual Review of Progress in Applied Computational Electromagnetics (ACES), Niagara Falls, Canada, pp. 174-177, March-April 2008.
R. Li, G. DeJean, M. M. Tentzeris, and J. Laskar, “Development and analysis of a folded shortedpatch antenna with reduced size,” IEEE Trans. Antennas Propagat., vol. 52, no. 2, pp. 555-562, March 2004.
A. Holub and M. Polivka, “A novel microstrip patch antenna miniaturization technique: a meanderly folded shorted-patch antenna,” 14th Microwave Techniques, COMITE, pp. 1-4, 2008.
T. J. Cho and H. M. Lee, “Front-to-back ratio improvement of a microstrip patch antenna by ground plane edge shaping,” Antennas and Propagation Society International Symposium (APSURSI), pp. 1-4, 2010.
H.-M. Lee and J.-k. Kim, “Front-to-back ratio improvement of a microstrip patch antenna using an isolated soft surface structure,” Proceedings of the 39th European Microwave Conference, Rome, Italy, pp. 385-388, Sep.-Oct., 2009.
Y. Li, S. Sun, L. Jiang, P. Yang, and S. He, “Back radiation reduction of the folded shorted-patch antenna using finite ground strips with resistive loads,” 28th Annual Review of Progress in Applied Computational Electromagnetics (ACES), Columbus, Ohio, pp. 795-799, April 2012.
T. Namiki, Y. Murayama, and K. Ito, “Improving radiation-pattern distortion of a patch antenna having finite ground plane”, IEEE Trans. Antennas Propagat., vol. 51, no. 3, pp. 478-482, March 2003.
