volume | PIER Journals

Abstract

A seven-band antenna for vehicle-mounted T-BOX with a compact structure is proposed and studied. The proposed antenna is composed of a monopole branch and a ground branch. In addition, a slot is embedded in the monopole branch for bandwidth enhancement. By using 0.25- and 0.5-wavelength modes, the lower band (824-960 MHz) and higher band (1710-2690 MHz) are covered. The working mechanism is analyzed based on S-parameters and surface current distributions. The attractive merits of the proposed antenna are that the structure is compact with a small ground, and no lumped element is used. The measured results show that the antenna can cover the lower band of GSM850/900 and the desired upper band of DCS1800/PCS1900/UMTS2100/LTE2300/2500. The measured efficiencies are also presented.

1. Park, K.-W., "T-BOX: Tamper-resistant vehicle data collection system for a networked digital tachygraphy," International Conference on ICT for Smart Society, 2013.

2. Wong, K. L., Planar Antennas for Wireless Communications, Wiley Inter-Science, 2003.

3. Anguera, J., A. Andoejar, M.-C. Huynh, C. Orlenius, C. Picher, and C. Puente, "Advances in antenna technology for wireless handheld devices," Int. J. Antennas Propag., Art. No. 838364, 2013.

4. Elhabchi, M., M. N. Srifi, and R. Touahni, "A tri-band-notched UWB planar monopole antenna using DGS and semi arc-shaped slot for WIMAX/WLAN/X-band," Progress In Electromagnetics Research Letters, Vol. 70, 7-14, 2017.
doi:10.2528/PIERL17050813

5. Ban, Y. L., C. L. Liu, Z. Chen, J. L. W. Li, and K. Kang, "Small-size multi resonant octalband antenna for LTE/WWAN smartphone applications," IEEE Antennas Wireless Propag. Lett., Vol. 13, 619-622, 2014.
doi:10.1109/LAWP.2014.2313353

6. Wong, K. L. and Y. C. Chen, "Small-size hybrid loop/open-slot antenna for the LTE smartphone," IEEE Trans. Antennas Propag., Vol. 63, No. 12, 5837-5841, 2015.
doi:10.1109/TAP.2015.2478960

7. Deng, C. J., Y. Li, Z. J. Zhang, and Z. H. Feng, "Planar printed multi-resonant antenna for octalband WWAN/LTE mobile handset," IEEE Antennas Wireless Propag. Lett., Vol. 14, 1734-1737, 2015.
doi:10.1109/LAWP.2015.2421335

8. Ban, Y. L., Y. F. Qiang, Z. Chen, K. Kang, and J. H. Guo, "A dual-loop antenna design for hepta-band WWAN/LTE metal-rimmed smartphone applications," IEEE Trans. Antennas Propag., Vol. 63, No. 1, 48-58, 2015.
doi:10.1109/TAP.2014.2368573

9. Li, Y., Z. J. Zhang, J. F. Zheng, Z. H. Feng, and M. F. Iskander, "A compact hepta-band loopinverted F reconfigurable antenna for mobile phone," IEEE Trans. Antennas Propag., Vol. 60, No. 1, 389-392, 2012.
doi:10.1109/TAP.2011.2167949

10. Anguera, J., I. Sanz, J. Mumbru, and C. Puente, "Multiband handset antenna with a parallel excitation of PIFA and slot radiations," IEEE Antennas Wireless Propag. Lett., Vol. 58, 348-356, 2010.
doi:10.1109/TAP.2009.2038183

11. Yuan, B., Y. Cao, C. F. Wang, and B. Cui, "Slot antenna for metal-rimmed mobile handsets," IEEE Trans. Antennas Propag., Vol. 11, No. 12, 1334-1337, 2012.
doi:10.1109/LAWP.2012.2227663

12. Li, M., et al. "A compact monopole antenna for smartphones," 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017.

Dr. Jing-Li Guo

Dr. Lun Cui