volume | PIER Journals

Abstract

In this paper, design and analysis of omnidirectional single feed circularly polarized, wide axial ratio beamwidth resonant sidefed bifilar helix antennas that do not require a ground plane is presented. The simulation and measurement results show that side-fed helix antennas of various radii gives near perfect circular polarization (CP) almost over the whole sphere except at and around nulls, at a certain turn angle by properly proportioning the area of loop (A) with the product of pitch (p) and radianlength (l) of helix. Helix antennas with smaller radii give axial ratio (AR) close to one at higher values of turn angle with lower value of resonant input impedances but CP is less sensitive to inaccuracy in turn angle. However helix antennas with larger radii results in AR close to one at lower values of turn angle and provides better values of input resistance but its AR is more sensitive to variations in turn angle. The simulated results show that the polarization solid angle beamwidth (for AR ≤ -3 dB) varies from 3.96π to 4π steradian. The gain and 3dB beamwidth of the antennas are 2dBi and 90° respectively. The polarization bandwidth varies from 34% to 65%. The simulated results are verified by experimental measurements.

1. Yousaf, J., M. Amin, and S. Iqbal, "Circularly polarized wide axial ratio beamwidth omnidirectional bifilar helix antennas," Proc. IEEE First AESS European Conf. on Satellite Telecommunication, 1-6, Oct. 2012. Google Scholar

2. Row, J.-S. and M.-C. Chan, "Reconfigurable circularly-polarized patch antenna with conical beam," IEEE Trans. on Antennas and Propag., Vol. 58, No. 8, 2753-2757, Aug. 2010. Google Scholar

3. Row, J.-S. and K.-W. Lin, "Low-profile design of dual-frequency and dual-polarised triangular microstrip antennas," Electron. Lett., Vol. 40, No. 3, 156-157, Feb. 2004. Google Scholar

4. Iwasaki, H., "A circularly polarized rectangular microstrip antenna using single-fed proximity-coupled method," IEEE Trans. on Antennas and Propag., Vol. 43, No. 8, 895-897, Aug. 1995. Google Scholar

5. Yang, R., R. Mittra, and M. Itoh, "A new omnidirectional CP patch antenna," Proc. Int. Symp. on Anennas and Propagation AP-S Digest, Vol. 3, 1848-1851, Jun. 1994. Google Scholar

6. Iqbal, S., M. Amin, and J. Yousaf, "Designing omnidirectional bifilar helix antenna for circular polarization," Proc. IEEE First AESS European Conf. on Satellite Telecommunication, 1-6, Oct. 2012. Google Scholar

7. Iqbal, S., M. Amin, and J. Yousaf, "Low profile circularly polarized side-fed bifilar helix antenna," Proc. IEEE 9th Int. Bhurban Conf. on Applied Sciences and Technology, 325-328, Jan. 2012. Google Scholar

8. Leung, K. W., W. C. Wong, and H. K. Ng, "Circularly polarized slot-coupled dielectric resonator antenna with a parasitic patch," IEEE Antennas Wireless Propag. Lett., Vol. 1, No. 1, 57-59, 2002. Google Scholar

9. Chang, F.-S., K.-L.Wong, and T.-W. Chiou, "Low cost broadband circularly polarized patch antenna," IEEE Trans. on Antennas and Propag., Vol. 51, No. 10, 3006-3009, Oct. 2003. Google Scholar

10. Huang, K.-C. and Z. Wang, "Millimeter-wave circular polarized beam-steering antenna array for gigabit wireless communications," IEEE Trans. on Antennas and Propag., Vol. 54, No. 2, 743-746, Feb. 2006. Google Scholar

11. Rappaport, T. S., J. C. Liberti, K. L. Blackard, and B. Tuch, "The e®ects of antenna gains and polarization on multipath delay spread and path loss at 918MHz on cross-campus radio links," Proc. IEEE 42nd Vehicular Technology Conf., 550-555, May 1992. Google Scholar

12. Wu, X., G. V. Eleftheriades, and E. V. Deventer, "Design and characterization of single and multiple beam MM-wave circularly polarized substrate lens antennas for wireless communications," Proc. Int. Symp. on Antenna and Propagation Society, Vol. 4, 2408-2412, Aug. 1999. Google Scholar

13. Ryu, K. S. and A. A. Kishk, "UWB dielectric resonator antenna having consistent omnidirectional pattern and low crosspolarization characteristics," IEEE Trans. on Antennas and Propag., Vol. 59, No. 4, 1403-1408, Apr. 2011. Google Scholar

14. Sichak, W. and S. Milazzo, "Antennas for circular polarization," Proc. IRE, 997-1001, Aug. 1948. Google Scholar

15. Solosko, R. B. and S. R. Laxpati, "A log-periodic antenna with vertically polarized omnidirectional radiation," IEEE Trans. on Antennas and Propag., Vol. 16, No. 6, 752-753, Nov. 1968. Google Scholar

16. Lin, C.-C., L.-C. Kuo, and H.-R. Chuangl, "A horizontally polarized omnidirectional printed antenna for WLAN applications," IEEE Trans. on Antennas and Propag., Vol. 54, No. 11, 3551-3556, Nov. 2006. Google Scholar

17. Hong, W. and K. Sarabandi, "Low profile miniaturized planar antenna with omnidirectional vertically polarized radiation," IEEE Trans. on Antennas and Propag., Vol. 56, No. 6, 1533-1540, Jun. 2008. Google Scholar

18. Oh, J. and K. Sarabandi, "A novel high gain low profile miniaturized vertically polarized antenna," Proc. Int. Symp. on, 1-4, Jul. 2010. Google Scholar

19. Wong, K.-L. and C.-H. Wu, "Wide-band omnidirectional square cylindrical metal-plate monopole antenna," IEEE Trans. on Antennas and Propag., Vol. 53, No. 8, 2758-2771, Aug. 2005. Google Scholar

20. Herscovici, N., Z. Sipus, and P.-S. Kildal, "The cylindrical omnidirectional patch antenna," IEEE Trans. on Antennas and Propag., Vol. 49, No. 12, 1746-1753, Dec. 2001. Google Scholar

21. Nakano, H., N. Suzuki, T. Ishii, and J. Yamauchi, "Mesh antennas for dual polarization," IEEE Trans. on Antennas and Propag., Vol. 49, No. 5, 715-723, May 2001. Google Scholar

22. Iwasaki, H. and N. Chiba, "Circularly polarised back-to-back microstrip antenna with an omnidirectional pattern," Proc. IEE Microw. Antennas Propag., Vol. 146, No. 4, 277-281, Aug. 1999. Google Scholar

23. Kawakami, H., G. Sato, and R. Wakabayashi, "Research on circularly polarized conical-beam antennas," IEEE Antennas and Propag. Magaz., Vol. 39, No. 3, 27-39, Jun. 1997. Google Scholar

24. Galindo, V. and K. Green, "A near-isotropic circularly polarized antenna for space vehicles," IEEE Trans. on Antennas and Propag., Vol. 18, No. 6, 872-877, Nov. 1965. Google Scholar

25. Wang, C.-J. and C.-H. Lin, "A circularly polarized quasi-loop antenna," Progress In Electromagnetics Research, Vol. 84, 333-348, 2008. Google Scholar

26. Amin, M., J. Yousaf, and M. K. Amin, "Terrestrial mode quadrifilar helix antenna," Progress In Electromagnetics Research Letters, Vol. 27, 179-187, 2011. Google Scholar

27. Dyson, J. D. and P. E. Mayes, "New circularly-polarized frequency-independent antennas with conical beam or omnidirectional patterns," IRE Trans. on Antennas Propag., 334-342, Jul. 1961. Google Scholar

28. Amin, M. and R. Cahill, "Effect of helix turn angle on the performance of half wavelength quadrifilar helix antenna," IEEE Microw. Wireless Compon. Lett., Vol. 16, No. 6, 384-386, Jun. 2006. Google Scholar

29. Tseng, H.-W. and B. A. Munk, "The generation of omnidirectional circularly polarized far field by a pair of orthogonally oriented vee dipoles," Proc. Int. Symp. on Antennas and Propagation, AP-S Digest, 1042-1045, Jul. 1993. Google Scholar

30. Amin, M., R. Cahill, and V. Fusco, "Single feed low profile omnidirectional antenna with slant 450 linear polarization," IEEE Trans. on Antennas and Propag., Vol. 55, No. 11, 3087-3090, Nov. 2007. Google Scholar

31. Wheeler, H. A., "A helical antenna for circular polarization," Proc. IRE, 1484-1488, Dec. 1947. Google Scholar

32., Nec-win Professional (Version 1.6), [Online] Available: Nittany Scientific, 2003. Google Scholar

33. Ando, A., N. Kita, W. Yamada, K. Itokawa, and A. Sato, "Study of dual-polarized omnidirectional antennas for 5.2 GHz-band 2x2 MIMO-OFDM systems," Proc. Int. Symp. on Antennas and Propagation, Vol. 2, 1740-1743, Jun. 2004. Google Scholar

34. Li, R.-L. and V. F. Fusco, "Circularly polarized twisted loop antenna," IEEE Trans. on Antennas and Propag., Vol. 50, No. 10, 1377-1381, Oct. 2002. Google Scholar

35. Atta, L. C. V., R. J. Mailloux, and M. M. Levenson, "A simple antenna with good circular polarization," IEEE Trans. on Antennas and Propag., Vol. 17, No. 3, 360-361, May 1969. Google Scholar

36. Balanis, C. A., Antenna Theory, Analysis and Design, 3rd Ed., John Wiley and Sons, 2005.

37. Lee, E.-A., "A low cross-polarization circularly polarized spacecraft TC&R antenna," Proc. Int. Symp. on Antennas and Propagation, AP-S Digest, Vol. 2, 914-917, Jun. 1994. Google Scholar

38. Huwhrey, L. C., "Characteristic ionospheric multipath phase fluctuations," IEEE Trans. on Antennas and Propag., 299-300, Mar. 1971. Google Scholar

Dr. Jawad Yousaf

Dr. Muhammad Amin

Dr. Sana Iqbal