volume | PIER Journals

Abstract

In this paper, a compact planar quasi-Yagi antenna with enhanced radiation characteristics is presented. The proposed structure is designed by incorporating metamaterial unit cells in place of conventional directors. Here, the technique used for directivity improvement is that the refractive index of the metamaterial is lower than that of the antenna substrate, which acts as a regular lens for beam focusing. Loading the quasi-Yagi antenna with metamaterial results in directivity as well as gain enhancement at the end-fire direction as compared to the quasi-Yagi antenna with directors. In addition, reduction in the overall size of the proposed quasi-Yagi antenna by 26.67% is achieved. An enhanced impedance bandwidth has also been noticed. The gain performance of the proposed antenna within the frequency band has been studied.

1. Deal, W. R., N. Kaneda, J. Sor, Y. Qian, and T. Itoh, "A new quasi-Yagi antenna for planar active antenna arrays," IEEE Trans. Microw. Theory Tech., Vol. 48, No. 6, 910-918, Jun. 2000.
doi:10.1109/22.846717 Google Scholar

2. Qian, Y., W. R. Deal, N. Kaneda, and T. Itoh, "Microstirp-fed quasi-Yagi antenna with broadband characteristics," Electron. Lett., Vol. 34, No. 23, 2194-2196, Nov. 1998.
doi:10.1049/el:19981583 Google Scholar

3. Lu, H.-D., L.-M. Si, and Y. Liu, "Compact planar microstrip-fed quasi-Yagi antenna," Electron. Lett., Vol. 48, No. 3, 140-141, Feb. 2012.
doi:10.1049/el.2011.3458 Google Scholar

4. Wang, H., S.-F. Liu, W.-T. Li, and X.-W. Shi, "Design of a wideband planar microstrip-fed quasi-Yagi antenna," Progress In Electromagnetics Research Letters, Vol. 46, 19-24, 2014. Google Scholar

5. Lu, L., K. Ma, F. Meng, and K. S. Yeo, "Design of a 60-GHz quasi-Yagi antenna with novel ladder-like directors for gain and bandwidth enhancements," IEEE Antennas Wireless Propag. Lett., Vol. 15, 682-685, 2016.
doi:10.1109/LAWP.2015.2469139 Google Scholar

6. Balanis, C. A., Antenna Theory Analysis and Design, 3rd Ed., John Wiley & sons, 2005.

7. Bemani, M. and S. Nikmehr, "A novel wide-band microstrip Yagi-Uda array antenna for WLAN applications," Progress In Electromagnetics Research, Vol. 16, 389-406, 2009.
doi:10.2528/PIERB09053101 Google Scholar

8. Cai, R.-N., M.-C. Yang, S. Lin, X.-Q. Zhang, X.-Y. Zhang, and X.-F. Liu, "Design and analysis of printed Yagi-Uda antenna and two-element array for WLAN applications," International Journal of Antennas and Propagation, 1-8, 2Hindawi Publishing Corporation, Aug. 012. Google Scholar

9. Park, B.-Y., M.-H. Jeong, and S.-O. Park, "A miniaturized microstrip-to-coplanar-strip transition loaded with artificial transmission lines and 2.4-GHz antenna application," IEEE Antennas Wireless Propag. Lett., Vol. 13, 1486-1489, 2014.
doi:10.1109/LAWP.2014.2341552 Google Scholar

10. Hajizadeh, P., H. R. Hassani, and S. H. Sedighy, "Planar artificial transmission lines loading for miniaturization of RFID printed quasi-Yagi antenna," IEEE Antennas Wireless Propag. Lett., Vol. 12, 464-467, 2013.
doi:10.1109/LAWP.2013.2253540 Google Scholar

11. Huang, H.-C., J.-C. Lu, and P. Hsu, "On the size reduction of planar Yagi-Uda antenna using parabolic reflector," Asia-Pacific Microwave Conference, Vol. 1, 1-3, 2015. Google Scholar

12. Chen, L., Z. Lei, R. Yang, J. Fan, and X. Shi, "A broadband artificial material for gain enhancement of antipodal tapered slot antenna," IEEE Trans. Antennas Propag., Vol. 63, No. 1, 395-400, Jan. 2015.
doi:10.1109/TAP.2014.2365044 Google Scholar

13. Smith, D. R., D. C. Vier, Th. Koschny, and C. M. Soukoulis, "Electromagnetic parameter retrieval from inhomogeneous metamaterials," Phys. Rev. E, Vol. 71, No. 3, 036617, Mar. 2005.
doi:10.1103/PhysRevE.71.036617 Google Scholar

Dr. Moumita Sarkar

Dr. Rhitam Datta

Ms. Pujayita Saha

Dr. Debasis Mitra