volume | PIER Journals

Abstract

This paper presents the development of an Ultra Wide Band (UWB) monopole antenna with dual band notch characteristics. Modified crown-square shaped fractal slots in the ground-plane are implemented to enhance the impedance bandwidth to around 58% as compared to conventional square monopole antenna without slots. Impedance bandwidth of the proposed antenna is approximately 114% with Voltage standing wave ratio (VSWR)<2. In addition to this, two omega-shaped (Ω) slots have been incorporated in the radiating patch to render band-notch characteristics centered at 5.5-GHz band assigned to IEEE802.11a and HIPERLAN/2 as well as X-band for satellite communication centered at 7.5-GHz band. Measured antenna gain is stable over the entire UWB region except at the notch bands. Radiation pattern of the antenna show that the proposed antenna exhibits nearly monopole like E plane radiation patterns and omni-directional H plane radiation patterns throughout the band. A fabricated prototype is developed with close agreement between simulated and measured results.

1. "FCC report and order for Part 15 acceptance of ultra wideband (UWB) systems from 3.1-10.6 GHz,", FCC Website, Feb. 2002.
doi:10.1109/LAWP.2012.2199274

2. Emadian, S. R., C. Ghobadi, J. Nourinia, M. H. Mirmozafari, and J. Pourahmadazar, "Bandwidth enhancement of CPW-fed circle-like slot antenna with dual band-notched characteristic," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 543-546, 2012.
doi:10.1049/el.2011.4024

3. Emadian, R., M. Mirmozafari, C. Ghobadi, and J. Nourinia, "Bandwidth enhancement of dual band-notched circle-like slot antenna," Electronics Letters, Vol. 48, No. 7, 356-357, 2012.
doi:10.1049/iet-map.2009.0560

4. Movahedinia, R., M. Ojaroudi, and S. S. Madani, "Small modified monopole antenna for ultra-wideband application with desired frequency band-notch functions," IET Microwaves, Antennas and Propagation, Vol. 5, No. 11, 1380-1385, 2011.
doi:10.1049/iet-map.2011.0025

5. Jahromi, M. N., A. Falahati, and R. M. Edwards, "Application of fractal binary tree slot to design and construct a dual band-notch CPW-ground-fed ultra-wide band antenna," IET Microwaves, Antennas and Propagation, Vol. 5, No. 12, 1424-1430, 2011.
doi:10.1109/TAP.2011.2167947

6. Lin, C.-C., J. Peng, and R. W. Ziolkowski, "Single, dual and tri-band-notched ultrawideband (UWB) antennas using capacitively loaded loop (CLL) resonators," IEEE Transactions on Antennas and Propagation, Vol. 60, No. 1, 102-109, 2012.
doi:10.2528/PIERC13011607

7. Ghatak, R., B. Biswas, A. Karmakar, and D. R. Poddar, "A circular fractal UWB antenna based on Descartes circle theorem with band rejection capability," Progress In Electromagnetics Research C, Vol. 37, 235-248, 2013.
doi:10.1002/mop.27488

8. Ojaroudi, M. and N. Ojaroudi, "Low profile slot antenna with dual band-notched function for UWB system," Microwave and Optical Technology Letters, Vol. 55, 951-954, 2013.
doi:10.1002/mop.27301

9. Yazdi, M. and N. Komjani, "Planer UWB monopole antenna with dual band-notched characteristic for UWB application," Microwave and Optical Technology Letters, Vol. 55, 241-245, 2013.
doi:10.1049/el.2010.2574

10. Cai, L. Y., Y. Li, G. Zeng, and H. C. Yang, "Compact wideband antenna with double-fed structure having band-notched characteristics," Electronics Letters, Vol. 46, No. 23, 1534-1536, 2010.
doi:10.1016/j.aeue.2012.08.007

11. Ghatak, R., A. Karmakar, and D. R. Poddar, "Hexagonal boundary Sierpinski carpet fractal shaped compact ultrawideband antenna with band rejection functionality," International Journal of Electronics and Communication (AEÜ), Vol. 67, 250-255, 2013.
doi:10.1002/mop.26747

12. Ghatak, R., C. Goswami, R. K. Mishra, and D. R. Poddar, "A CPW fed planar monopole antenna with modified H shaped slot for WLAN/Wi-MAX application," Microwave and Optical Technology Letters, Vol. 54, 1296-1301, 2012.
doi:10.1109/TAP.2011.2109684

13. Tang, M.-C., S. Xiao, T. Deng, D. Wang, J. Guan, B. Wang, and G.-D. Ge, "Compact UWB antenna with multiple band notches for Wimax and WLAN," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 4, 1372-1376, 2011.

14. Kim, D. O., C. Y. Kim, J. K. Park, and N. I. Jo, "Compact band notched ultrawide band antenna using the Hilbert curve slot," Microwave and Optical Technology Letters, Vol. 53, 2642-2648, 2011.
doi:10.1002/mop.27512

15. Esmati, Z. and M. Moosazadeh, "Dual band notched ultra wide band antenna by using step by step design inside conductor backed plane," Microwave and Optical Technology Letters, Vol. 55, 1069-1074, 2013.
doi:10.1002/mop.27376

16. Ojaroudi, N. and M. Jaroudi, "A novel design of reconfigurable small monopole antenna with switchable band notch and multi resonance functions for UWB application," Microwave and Optical Technology Letters, Vol. 55, 652-656, 2013.
doi:10.1049/iet-map.2010.0026

17. Falahati, A., M. Naghshvarian-Jahromi, and R. M. Edwards, "Bandwidth enhancement and decreasing ultra-wideband pulse response distortion of Penta-Gasket-Koch monopole antennas using compact-grounded co-planar wave guides," IET Microwaves, Antennas and Propagation, Vol. 5, No. 1, 48-56, 2011.
doi:10.1109/LAWP.2009.2025972

18. Ojaroudi, M., C. Ghobadi, and J. Nourinia, "Small square monopole antenna with inverted T-shaped notch in the ground plane for UWB application," IEEE Antennas and Wireless Propagation Letters, Vol. 8, 728-731, 2009.
doi:10.1002/mop.27358

19. Ojaroudi, N. and M. Ojaroudi, "Small monopole antenna with multi resonance characteristic by using rotated T-shaped slit and parasitic structure for UWB system," Microwave and Optical Technology Letters, Vol. 55, 482-485, 2013.
doi:10.1002/mop.27456

20. Ojaroudi, N., M. Ojaroudi, and S. Amiri, "Compact UWB microstrip antenna with satellite down-link frequency rejection in X-band communications by etching a T-shaped step-impedance resonator slot," Microwave and Optical Technology Letters, Vol. 55, 922-926, 2013.
doi:10.1109/MAP.2003.1189650

21. Werner, H. D. and S. Ganguly, "An overview of fractal antenna engineering research," IEEE Antennas and Propagation Magazine, Vol. 45, No. 1, 38-57, 2003.
doi:10.1109/8.900236

22. Puente, C., J. Romeu, and A. Cardama, "The Koch monopole: A small fractal antenna," IEEE Transactions on Antennas and Propagation, Vol. 48, No. 11, 1773-1781, 2000.
doi:10.1109/74.997888

23. Gianvittorio, J. P. and Y. Rahmat-Samii, "Fractal antennas: A novel antenna miniaturization technique, and applications," IEEE Antennas and Propagation Magazine, Vol. 44, No. 11, 20-36, 2002.
doi:10.1109/MAP.2003.1232160

24. Best, S. R., "A discussion on the significance of geometry in determining the resonant behavior of fractal and other non-euclidean wire antennas," IEEE Antennas and Propagation Magazine, Vol. 5, No. 3, 9-28, 2003.
doi:10.1142/S0218348X06003313

25. Sengupta, K. and K. J. Vinoy, "A new measure of lacunarity for generalized fractals and its impact in the electromagnetic behavior of Koch dipole antennas," Fractals, Vol. 14, No. 4, 271-282, 2006.
doi:10.2528/PIER09082505

26. Comisso, M., "On the use of dimension and lacunarity for comparing the resonant behavior of convoluted wire antennas," Progress In Electromagnetics Research, Vol. 96, 361-376, 2009.

27. Dehkhoda, P. and A. Tavakoli, "Crown-Sierpinski microstrip antenna: Further reduction of the size of a crown square fractal," IEEE AP-S International Symposium, Vol. 1B, 247-250, 2005.
doi:10.1002/0470013850

28. Falconer, K., Fractal Geometry, Mathematical Foundations and Applications, 2nd Ed., John Wiley & Sons, 2003.

Dr. Balaka Biswas

Prof. Rowdra Ghatak

Dr. Anirban Karmakar

Professor Dipak Poddar