Wide Bandwidth Endfire Antenna with Log-Period Directors

Authors

  • Yuanhua Sun Centre for RFIC and System Technology, School of Communication and Information Engineering University of Electronic Science and Technology of China, Chengdu 611731, China
  • Guangjun Wen Centre for RFIC and System Technology, School of Communication and Information Engineering University of Electronic Science and Technology of China, Chengdu 611731, China
  • Haiyan Jin Centre for RFIC and System Technology, School of Communication and Information Engineering University of Electronic Science and Technology of China, Chengdu 611731, China
  • Ping Wang Centre for RFIC and System Technology, School of Communication and Information Engineering University of Electronic Science and Technology of China, Chengdu 611731, China,Department of Electronic Engineering, College of Electronic and Information Engineering Chongqing Three Gorges University, Chongqing 404000, China
  • Yongjun Huang Centre for RFIC and System Technology, School of Communication and Information Engineering University of Electronic Science and Technology of China, Chengdu 611731, China
  • Jian Li Centre for RFIC and System Technology, School of Communication and Information Engineering University of Electronic Science and Technology of China, Chengdu 611731, China

Keywords:

Endfire antenna, front-to-back ratio, log-period directors, wide bandwidth antenna

Abstract

This paper presents the design and implementation of a novel wide bandwidth endfire antenna with log-periodic directors. The feeding structure of the proposed antenna includes a balun which is formed using a pair of microstrip-to-slotline transitions. The proposed antenna has three resonant frequencies in the operating frequency band. Both simulation and measurement results show that the operating frequency band of the antenna for S11 < -10 dB covers the wide bandwidth (5 GHz – 10 GHz), and the relative bandwidth is 67%. Far field measurements in azimuth plane and elevation plane show that the radiation patterns are stable and end fire within the operating band at frequencies of 5 GHz, 7 GHz, 8 GHz, 10 GHz. The proposed antenna radiates a well-defined endfire beam, with a front-to-back ratio > 18 dB and cross polarization level below -28 dB. The dimension of the proposed antenna is 26 mm × 27 mm. Good return loss and radiation pattern characteristics are obtained and measured results are presented to validate the usefulness of the proposed antenna structure for wide bandwidth endfire applications.

Downloads

Download data is not yet available.

References

P-Y. Qin, A. R. Weily, Y. J. Guo, T. S. Bird, and C-H. Liang, “Frequency reconfigurable quasiYagi folded dipole antenna,” IEEE Transactions on Antennas and Propagation, vol. 58, pp. 2742- 2747, 2010.

N. Nikolic and A. R. Weily, “Compact E-band planar quasi-Yagi antenna with folded dipole driver,” IET Microwaves, Antennas & Propagation, vol. 4, pp. 1728-1734, 2010.

B. Honarbakhsh and A. Tavakoli, “Analysis of thin microstrip antennas by meshless methods,” The Applied Computational Electromagnetic Society, vol. 27, pp. 983-990, 2012.

Y. Li, P. Yang, F. Yang, and S. He, “A method to reduce the back radiation of the fold PIFA antenna with finite ground,” The Applied Computational Electromagnetic Society, vol. 28, pp. 110-115, 2013.

M. Ojaroudi, N. Ojaroudi, and N. Ghadimi, “Enhanced bandwidth small square slot antenna with circular polarization characteristrics for WLAN/WIMAX and C-band applications,” The Applied Computational Electromagnetic Society, vol. 28, pp. 156-161, 2013.

Y. Li, W. Li, and W. Yu, “A multi-band/UWB MIMO/diversity antenna with an enhanced isolation using radial stub loaded resonator,” The Applied Computational Electromagnetic Society, vol. 28, pp. 8-20, 2013.

Z. P. Wang, “Yagi antenna with improved out-ofband gain suppression,” IET Electronics Letters, vol. 48, pp. 546-548, 2012.

T-G. Ma, C-W. Wang, R-C. Hua, and J-W. Tsai, “A modified quasi-Yagi antenna with a new compact microstrip-to-coplanar strip transition using artificial transmission lines,” IEEE Trans. Antenna Propag., vol. 57, pp. 2469-2474, 2009.

H. K. Kan, A. M. Abbosh, R. B. Waterhouse, and M. E. Bialkowski, “Compact broadband coplanar waveguide-fed curved quasi-Yagi antenna,” IET Microw. Antennas Propag., vol. 3, pp. 572-574, 2007.

S. J. Wu, C. H. Kang, K. H. Chen, and J. H. Tarng, “A multiband quasi-Yagi type antenna,” IEEE Transactions on Antennas and Propagation, vol. 58, pp. 593-596, 2010.

D. C. Chang, C. B. Chang, and J. C. Liu, “Modified planar quasi-Yagi antenna for WLAN dual-band operation,” Microwave and Optical Technology Letters, vol. 46, pp. 443-446, 2005.

E. A. Navarro, B. Schoenlinner, and G. M. Rebeiz, “Broadband printed dipole with integrated viahole balun for WiMAX applications,” Microwave and Optical Technology Letters, vol. 53, pp. 52- 55, 2011.

Z. Y. Zhang, G. Fu, S. L. Zuo, and X. Gong, “Wideband unidirectional patch antenna with Γ– shaped strip feed,” Electronics Letters, vol. 46, pp. 24-26, 2010.

N. K. Nahar, B. Raines, R. G. Rojas, and B. Strojny, “Wideband antenna array beam steering with free-space optical true-time delay engine,” IET Microwaves, Antennas & Propagation, vol. 5, pp. 740-746, 2011.

H. Kan, R. Waterhouse, A. Abbosh, and M. Bialkowski, “Simple broadband planar CPW-fed quasi-Yagi antenna,” IEEE Antennas Wireless Propag. Letters, vol. 6, pp. 18-20, 2007.

M. E. Bialkowski and A. M. Abbosh, “Design of a compact UWB out-of-phase power divider,” Progress In Electromagnetics Research, vol. 116, pp. 18-20, 2007.

O. Tze-Meng, K. G. Tan, and A. W. Reza, “A dual-band omni-directional microstrip antenna,” Progress In Electromagnetics Research, vol. 106, pp. 363-376, 2010.

W. L. Stutzman and G. A. Thiele, Antenna Theory and Design, New York, Wiley, 1998.

Downloads

Published

2021-08-22

How to Cite

[1]
Y. . Sun, G. . Wen, H. . Jin, P. . Wang, Y. . Huang, and J. . Li, “Wide Bandwidth Endfire Antenna with Log-Period Directors”, ACES Journal, vol. 30, no. 11, pp. 1173–1179, Aug. 2021.

Issue

2015: Vol 30 Iss 11

Section

Articles