# 포크 모양의 급전 구조를 갖는 변형된 마름모 슬롯 UWB 안테나 설계 및 제작

Ha, Sung-Jea;Yoon, Joong-Han
하성재;윤중한

• Accepted : 2016.04.30
• Published : 2016.07.31
• 23 63

#### Abstract

In this paper, we propose a modified rhombus slot UWB(Ultra Wide Band) antenna with fork-shaped feeding structure. The proposed antenna is modified rhombus slot structure and fork-shaped feeding structure to get ultra-wideband characteristics for UWB communication. Modified rhombus slot structure consists of slot shaped which eliminated upper and lower part of the basic rhombus slot. The antenna is designed on an FR-4 substrate of which the dielectric constant is 4.4, and its overall size is $34mm(W_1){\times}34mm(L_1){\times}1mm(t)$, and its slot antenna size is $30mm(W_2){\times}16.75mm(L_3+L_4)$. After carrying out the simulation of each parameters, optimized values are obtained. From the fabricated and measured results, return loss of the proposed antenna satisfied Return Loss -10dB in 3.1 ~ 10.6 GHz. And measured results of gain and radiation patterns characteristics displayed for operating bands.

#### Keywords

Slot Antenna;Modified Rhombus Slot;Fork-shaped-fed;UWB(Ultra-Wide band) Application

#### References

1. J. R. Jamesand and P. S. Hall, Handbook of microstrip antenna, London: Peter Pereginus. 1989.
2. J. Y. Sze and K. L. Wong, "Bandwidth enhancement of a microstrip line fed printed wide-slot antenna", IEEE Transactions on Antennas and Propagation, vol. 49, no. 7, pp. 1020-1024, Jul. 2001. https://doi.org/10.1109/8.933480
3. Y. W. Jang, "Experimental study of large bandwidth three-offset microstrip-fed slot antenna", IEEE Microwave and Wireless Components Letters, vol. 11, no. 10, pp. 425-427, Oct. 2001. https://doi.org/10.1109/7260.959318
4. T. A. Denidni, Q. J. Rao, A.R. Sebak, and L. Talbi, "A broadband high efficiency bow tie slot antenna for WLAN applications", Microwave and Optical Technology Letters, vol. 43, no. 4, pp. 317-320, Nov. 2004. https://doi.org/10.1002/mop.20456
5. G. Sorbello, M. Pavone, and L. Pussello, "Numerical and experimental study of a rectangular slot antenna for UWB communications", Microwave and Optical Technology Letters, vol. 46, no. 4, pp. 315-319, Aug. 2005. https://doi.org/10.1002/mop.20975
6. D. C. Chang, J.C. Liu, and M.Y. Liu, "Improved U-shaped stub rectangular slot antenna with tuning pad for UWB applications", IET Electronics Letters, vol. 41, no. 20, pp. 1095-1097, Sep. 2005. https://doi.org/10.1049/el:20052095
7. D. S. Javan, O.H. Ghouchani, "Cross slot antenna with U-shaped tuning stub for ultra wideband applications", International Journal of Antennas and Propagation, vol. 2008 Article numb ID 262981, pp. 1-6, 2008.
8. J. H. Yoon, Wideband modified bow-tie slot antenna with a U shaped tuning stub, Microwave and Optical Technology Letters, vol. 53, no. 1, pp. 23-28, Jan. 2011. https://doi.org/10.1002/mop.25632
9. Y. Yang, Y. Z. Yin, B. W. Liu, and S. H. Jing, "A quasi-semicircular wide slot antenna with 3.5/5.5 GHz dual band notched characteristics for ultra-wideband applications, Microwave and Optical Technology Letters, vol. 54, no. 7, pp. 1602-1605, Jul. 2012. https://doi.org/10.1002/mop.26901
10. Federal Communications Commission, First report and order, revision of Part 5 of Commission's rule regarding ultra-wideband transmission system FCC 02-48, Apr. 22, 2002.
11. A. Kishk, Advancement in microstrip antennas with recent application, Intech, 2013.
12. J. H. Lu and C. H. Yeh, "Planar Broadband arc-shaped monopole antenna for UWB system," IEEE Transactions on Antennas and Propagation, vol. 60, no. 7, pp. 3091-3095, Jul. 2012. https://doi.org/10.1109/TAP.2012.2196954
13. Z. N. Chen, "Development of Ultra-wideband antennas", The Journal of Korea Institute of Electromagnetic Engineering and Science, vol. 13, no. 2, pp. 63-72, Jun. 2013. https://doi.org/10.5515/JKIEES.2013.13.2.63
14. K. M. Hanapi, S. K. A. Rahim, B. M. Saad, M. S. Abdull Rani, and M. Z. Abd Aziz, "An Elliptically planar UWB monopole antenna with step slots defective ground structure," Microwave and Optics Technology Letters, vol. 56, no. 9, pp. 2084-2088, Sep. 2014. https://doi.org/10.1002/mop.28530
15. M. M. Fakharian and P. Rezaei, "Very compact palmate leaf-shaped CPW-fed monopole antenna for UWB applications," Microwave and Optics Technology Letters, vol. 56, no. 7, pp. 1612-1616, Jul. 2014,. https://doi.org/10.1002/mop.28395
16. S. M. H. Varkiani, M. Afsahi, and P. Reazaie, "Circular slot CPW-fed monopole antenna for UWB applications," Microwave and Optics Technology Letters, vol. 56, no 8, pp. 1773-1776, Aug. 2014. https://doi.org/10.1002/mop.28446
17. J. H. Yeo and J. I. Lee, "UWB Circular Loop Antenna with Circular Sectors," Journal of the Korea Institute of Information and Communication Engineering, vol. 18, no. 12, pp. 2816-2822, Dec. 2014. https://doi.org/10.6109/jkiice.2014.18.12.2816
18. T. W. Kim, K. Choi, and H. Y. Hwang, "An UWB design of plane bow-tie monopole antenna," The Journal of Korea Institute of Electromagnetic Engineering and Science, vol. 25, no. 12, pp. 1212-1218, Dec. 2014. https://doi.org/10.5515/KJKIEES.2014.25.12.1212
19. S. Singhal and K. Singh, "Beveled monopole antenna with slot loaded like ground plane for UWB application," Microwave and Optics Technology Letters, vol. 57, no. 6, pp. 1289-129, Jun. 2015. https://doi.org/10.1002/mop.29072
20. S. M. H. Varkiani, M. Afsahi, and P. Rezaei, "Circular slot CPW-fed monopole antenna for UWB applications", Microwave and Optical Technology Letters, vol. 56, no. 8, pp. 1773-1776, Aug. 2014. https://doi.org/10.1002/mop.28446
21. K. M. Hanapi, S. K. A. Rahim, B. M. Saad, M. S. A. Rani, and M. Z. A. Aziz, "An elliptically planar UWB monopole F antenna with step slots defective ground structure", Microwave and Optical Technology Letters, vol. 56, no. 9, pp. 2084-2088, Sep. 2014. https://doi.org/10.1002/mop.28530
22. Ansoft High Frequency Structure Simulator (HFSS) Version 10.0, Ansoft Corporation, 2005.