volume | PIER Journals

Abstract

A novel coax-fed wideband loop antenna loaded with rectangular patches and U-shaped elements is presented and studied. By inserting a pair of rectangular patches inside the strip loops and employing a pair of U-shaped elements as the parasitic resonators, two additional resonances are excited and a good performance of bandwidth enhancement can be obtained. The measured results indicate that the impedance bandwidth (VSWR≤2) is about 87.1% from 1.58 to 4.02 GHz, which covers the required operating bands of DCS1800 (1710-1880 MHz), PCS1900 (1850-1990 MHz), UMTS2100 (1920-2170 MHz), WLAN2400 (2400-2484 MHz), LTE2300/2500 (2300-2690 MHz) and WiMAX3500 (3300-3690 MHz). In addition, good radiation characteristics such as symmetrical radiation pattern, moderate peak gain, low back radiation, and low cross-polarization are observed over the entire operating band.

1. Azim, R. and M. T. Islam, "Compact planar UWB antenna with band notch characteristics for WLAN and DSRC," Progress In Electromagnetics Research, Vol. 133, 391-406, 2013.

2. Quan, X. L., R. L. Li, J. Y. Wang, and Y. H. Cui, "Development of a broadband horizontally polarized omnidirectional planar antenna and its array for base stations," Progress In Electromagnetics Research, Vol. 128, 441-456, 2012.

3. Zhu, F., S. Gao, A. T. S. Ho, C. H. See, R. A. Abd-Alhameed, J. Li, and J. Xu, "Design and analysis of planar ultra-wideband antenna with dual band-notched function," Progress In Electromagnetics Research, Vol. 127, 523-536, 2012.
doi:10.2528/PIER12033105

4. Chen, A., T. Jiang, Z. Chen, and D. Su, "A novel low-profile wideband UHF antenna," Progress In Electromagnetics Research, Vol. 121, 75-88, 2011.
doi:10.2528/PIER11081302

5. Xu, H. Y., H. Zhang, K. Lu, and X. F. Zeng, "A holly-leaf-shaped monopole antenna with low RCS for UWB application," Progress In Electromagnetics Research, Vol. 117, 35-50, 2011.

6. Klemm, M., I. Z. Kovcs, G. F. Pedersen, and G. Troster, "Novel small size directional antenna for UWB WBAN/WPAN applications," IEEE Trans. Antennas Propag., Vol. 53, No. 12, 3884-3896, 2005.
doi:10.1109/TAP.2005.859906

7. Huang, Y. H., Q. Z. Liu, and S. G. Zhu, "A wideband and dual frequency three-dimensional transition-fed circular patch antenna for indoor base station application," Progress In Electromagnetics Research Letters, Vol. 11, 47-54, 2009.
doi:10.2528/PIERL09080207

8. An, W. X., H. Wong, K. L. Lau, S. F. Li, and Q. Xue, "Design of broadband dual-band dipole for base station antenna," IEEE Trans. Antennas Propag., Vol. 60, No. 3, 1592-1595, 2012.
doi:10.1109/TAP.2011.2180336

9. Malekpoor, H. and S. Jam, "Ultra-wideband shorted patch antennas fed by folded-patch with multi resonances," Progress In Electromagnetics Research B, Vol. 44, 309-326, 2012.

10. Lotfi Neyestanak, A. A., "Ultra wideband rose leaf microstrip patch antenna," Progress In Electromagnetics Research, Vol. 86, 155-168, 2008.
doi:10.2528/PIER08090201

11. Abbaspour, M. and H. R. Hassani, "Wideband star-shaped microstrip patch antenna," Progress In Electromagnetics Research Letters, Vol. 1, 61-68, 2008.
doi:10.2528/PIERL07111505

12. Wang, F. J. and J. S. Zhang, "Wide band cavity-backed patch antenna for PCS/IMI2000/2.4 GHz WLAN," Progress In Electromagnetics Research, Vol. 74, 39-46, 2007.
doi:10.2528/PIER07041801

13. Liu, C., J. L. Guo, Y. H. Huang, and L. Y. Zhou, "A novel dual-polarized antenna with high isolation and low cross polarization for wireless communication," Progress In Electromagnetics Research Letters, Vol. 32, 129-136, 2012.

14. Hu, W., Y. Z. Yin, P. Fei, and S. F. Zheng, "Design of a dual-polarized slot antenna with high isolation and low cross-polarization for wireless communication," Journal of Electromagnetic Waves and Applications, Vol. 26, No. 16, 2185-2191, 2012.
doi:10.1080/09205071.2012.729302

15. Mandal, M. K. and Z. N. Chen, "Compact dual-band and ultra-wideband loop antennas," IEEE Trans. Antennas Propag., Vol. 59, No. 8, 2774-2779, 2011.
doi:10.1109/TAP.2011.2158790

Dr. Shou-Tao Fan

Dr. Shu-Feng Zheng

Dr. Yuan-Ming Cai

Professor Ying-Zeng Yin

Dr. Ya-Jun Hu

Dr. Jing Hua Yang