volume | PIER Journals

Abstract

A frequency reconfigurable antenna suitable for handset is proposed in this research. The antenna structure includes an inverted-L shaped monopole and two meandered shorting strips. A wide high frequency band is excited from the inverted-L shaped strip monopole by direct feeding, and then the low and middle frequency bands are excited from two meandered shorting strips. Furthermore, a PIN switch diode is added at the end of shorting strip1 to implement the frequency reconfigurable property. The antenna was fabricated on an FR4 substrate and with a volume of only 9×50×5 mm³. It can cover the operation bands of LTE700/2300/2500, GSM850/900/1800/1900, UMTS2100, and WLAN2400. The detailed considerations and analyses of the design are studied in this paper.

1. Kang, D.-G. and Y. Sung, "Compact hexaband PIFA antenna for mobile handset applications," IEEE Antennas and Wireless Propagation Letters, Vol. 9, 1127-1130, 2010.
doi:10.1109/LAWP.2010.2095407

2. Wu, C.-H. and K.-L. Wong, "Ultrawideband PIFA with a capacitive feed for penta-band folder-type mobile phone antenna," IEEE Transactions on Antennas and Propagation, Vol. 57, 2461-2464, Aug. 2009.
doi:10.1109/TAP.2009.2024571

3. Wong, K.-L., W.-Y. Chen, and T.-W. Kang, "On-board printed coupled-fed loop antenna in close proximity to the surrounding ground plane for penta-band WWAN mobile phone," IEEE Transactions on Antennas and Propagation, Vol. 59, 751-757, Mar. 2011.
doi:10.1109/TAP.2010.2103020

4. Lin, S. Y., "Multiband folded planar monopole antenna for mobile handset," IEEE Transactions on Antennas and Propagation, Vol. 52, 1790-1794, Jul. 2004.
doi:10.1109/TAP.2004.831315

5. Chu, F. H. and K. L. Wong, "Internal coupled-fed dual-loop antenna integrated with a USB connector for WWAN/LTE mobile handset," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 11, 4215-4221, Nov. 2011.

6. Ban, Y.-L., J.-H. Chen, J. L.-W. Li, and Y. Wu, "Small-size printed coupled-fed antenna for eight-band LTE/GSM/UMTS wireless wide area network operation in an internal mobile handset," IET Microwaves, Antennas & Propagation, Vol. 7, No. 6, 399-407, Jan. 2013.
doi:10.1049/iet-map.2012.0390

7. Zheng, M., H. Y. Wang, and Y. Hao, "Internal hexa-band folded monopole/dipole/loop antenna Israa’ K. Khaled, “Internal nine-band antenna for WWAN/LTE mobile handsets with four resonances for mobile device," IEEE Transactions on Antennas and Propagation, Vol. 60, 2880-2885.
doi:10.1109/TAP.2012.2194687

8. Li, Y., Z. Zhang, J. Zheng, and Z. Feng, "Compact heptaband reconfigurable loop antenna for mobile handset," IEEE Transactions on Antennas and Propagation, Vol. 10, 1162-1165, 2011.

9. Hwang, S.-G., C. Yoon, I. S. Yoon, L. Chares, C. S. Park, and W.-S. Kim, "A reconfigurable mobile antenna for multiband operation using pin-diode," Microwave and Optical Technology Letters, Vol. 57, No. 2, 406-409, Feb. 2015.
doi:10.1002/mop.28860

10. Ban, Y.-L., Z. X. Chen, Z. Chen, K. Kang, and J. L.-W. Li, "Reconfigurable narrow-frame antenna for heptaband WWAN/LTE smart-phone applications," IEEE Transactions on Antennas and Propagation, Vol. 13, 1365-1368, 2014.

11. Ban, Y.-L., S.-C. Sun, P.-P. Li, J. L.-W. Li, and K. Kang, "Compact eight-band frequency reconfigurable antenna for LTE/WWAN tablet computer applications," IEEE Transactions on Antennas and Propagation, Vol. 62, No. 1, 471-475, Jan. 2014.
doi:10.1109/TAP.2013.2287522

12. Yamagajo, T. and Y. Koga, "Frequency reconfigurable antenna with MEMS switches for mobile terminals," Antennas and Propagation in Wireless Communications (APWC), 1213-1216, 2011.

13. Lim, I. and S. Lim, "Monopole-like and boresight pattern re-configurable antenna," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 12, 5854-5859, Dec. 2013.
doi:10.1109/TAP.2013.2283926

14. Cao, W., B. Zhang, A. Liu, T. Yu, D. Guo, and K. Pan, "A reconfigurable microstrip antenna with radiation pattern selectivity and polarization diversity," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 11, 453-456, Dec. 2012.

15. Zhang, P.-F., S.-Z. Liu, and S. Zhao, "A novel reconfigurable microstrip patch antenna with frequency and polarization diversities," Microwave and Optical Technology Letters, Vol. 57, No. 6, 1494-1500, Jun. 2015.
doi:10.1002/mop.29120

16. Datasheet of HSMP-3894 PIN switch diode, [Online], , Available: http://www. avagotech.com/products/wireless/diodes/pin/hsmp-3894#overview.

Dr. Cheng-Chi Yu

Jiin-Hwa Yang

Dr. Hao-Tien Lo