Miniaturization of Dual-Band PIFA for Wireless LAN Communication

ETRI Journal

关键词: WLAN;    resonated loop feed structure;    dual-band;    PIFA;   

Others  :  1196688
DOI  :  10.4218/etrij.13.0212.0436

【 摘 要 】

In this letter, a simple method for reducing the size of a dual-band planar inverted-F antenna (PIFA) is described. This method is based on a coupling capacitor connected in parallel to the PIFA feed conductor. The proposed antenna occupies a small ground clearance of 10 mm x 5 mm and is able to provide –10-dB impedance bandwidths of 120 MHz and 760 MHz for 2.45-GHz and 5.5-GHz wireless local area network applications, respectively. The measured antenna efficiencies are 71.8% and 73.6%, averaged over the 2.45-GHz and 5.5-GHz frequency bands, respectively.

   

【 参考文献 】

• [1]Y.L. Kuo and K.L. Wong, "Printed Double-T Monopole Antenna for 2.4/5.2 GHz Dual-Band WLAN Operation," IEEE Trans. Antennas Propag., vol. 51, no. 9, Sept. 2003.
• [2]Y.S. Wang, M.C. Lee, and S.J. Chung, "Two PIFA-Related Miniaturized Dual-Band Antennas," IEEE Trans. Antennas Propag., vol. 55, no. 3, Mar. 2007.
• [3]S.J. Jeong and K.C. Hwang, "Novel Shorted Meander-Line USB Dongle Antenna with a Compact Ground Plane," ETRI J. vol. 32, no. 4, Aug. 2010, pp. 610-613.
• [4]Y. Liu et al., "Dual-Band PIFA Using Resonated Loop Feed Structure," Electron. Lett., vol. 48, no. 6, Mar. 2012.
• [5]O. Cho, H. Choi, and H. Kim, "Loop-Type Ground Antenna Using Capacitor," Electron. Lett., vol. 47, no. 1, Jan. 2011.
• [6]Y. Liu et al., "Loop-Type Ground Antenna Using Resonated Loop Feeding, Intended for Mobile Devices," Electron. Lett., vol. 47, no. 7, Mar. 2011.
• [7]Y. Liu et al., "Exciation Techniques of Loop Current Mode of Ground Antenna," IEEE CSQRWT Conf., 2011.
• [8]H. Kim, Y. Liu, and J. Lee, Multiband Internal Antenna Using Loop Structure, KR patent pending, 10-2012-0093542, 2012.