- Conical-Cylindrical Compound Monopole Antenna 2006 2
- Conical Cylindrical Compound Monopole Antenna. 2006 2
. 2006 2
Abstract List of tables List of figures. 1. 4 2.1 4 2.2 5 2.3 End cap 20 2.4 21. 33. 46 47
Conical-Cylindrical Compound Monopole Antenna Park, Seong bae Department of Radio Engineering Graduate School, Chungbuk National University Cheongju, Korea Supervised by Professor Ahn, Bierng Chearl Abstract In this study, it is suggested design of a Conical-Cylindrical compound monopole antenna. The dependence of the antenna performance on various geometric parameters is investigated using a commercial electromagnetic software, from which an optimum design of a conica-cylindricall monopole antenna is derived. Guideline for determining initial parameter values are given. The diameter of the circular ground plane is minimized to 1/5 wavelength at the lowest operating frequency. The antenna impedance matching is controlled by adjusting the gap between the plate and the ground plane, the conical monopole base width, and the base bevel angle. The antenna proposed in this study shows a reflection coefficient loss than -10dB and a 2.0-6.2 dbi gain over 3-30GHz frequencies. The antenna shows symmetrical radiation pattern in an azimuth angle because of a conical design. The designed antenna was made of a SMA - type connector and conical-type aluminum with inside space for light weight. Finally, the designed antenna is 25mm 35mm include of a ground plane.
List of Tables 1-34
List of Figures 1. - 5 2. (W) 6 3. (B) 7 4. (G) 8 5. (α) 8 6. (D) 9 7. (D) 13 8. (P) 15 9. (P) 19 10. (P) θ=90 20 11. 21 12. End cap 21 13. z 23 14. z 25 15. z 27 16. 3D 31 17. 31 18. - 33
19. - 35 20 - E-plane 37 21 - H-plane 39 22. - 39 23. - theta 90 40 24. - 40 25. (3.1-10.6GHz) 42 26. Far-Field E-Field (3,1-10.6GHz) 43 27. Far-Field E-Field 43 28. Far-Field 44
. Ultra Wide-Band(UWB) Radio. UWB,. UWB 2002 2 FCC. UWB 3.1-10.6GHz, [1]-[5]. [6]-[7]. UWB.... [8]-[13]. Honda Zisler 1976 1992 Honda [9]-[10]. 2 : 1.
. (omnidirectional).., [14]-[17]. (null).. [18]-[23]... -. CST Microwave Studio(MWS ) - -.. -. 1/5 20mm. 25mm 35mm. II -. III,,
. IV.
. 2.1-10 db 10 : 1.. -. -. 1 -. - (W), (L), (B), (G), (α), (D), (P), (t), (C). (α) (G), (B).
(a) (b) 1. -.. W 3 GHz 1/4 25mm L P 30 mm. (D) 3 GHz 0.2λ (πd/λ=0.63) 20 mm. B = 3 mm, G = 1.5 mm, α = 57, P = 13 mm, C= 2 mm, t = 3 mm. 2a = 1.3 mm, 2b = 4.1 mm, r = 2±0.1 50.. 2.2
(W). (P) (W) (L). 2. (W) 2 W. W. -10 db 10 : 1 W = 25 mm. (B) 3. (B) 3 mm 3 mm 7 mm 2 mm
. (B). (B). 3. (B). (G). 4. G. G = 1 mm.
4. (G). 5. (α).
(α) 5.. (α). α 60 57 (D). 6. (D)
(a) 3 GHz, E-plane (b) 8 GHz, E-plane
(c) 13 GHz, E-plane (d) 18GHz, E-plane
(e) 23GHz, E-plane (f) 28GHz : E-plane
(g) 33GHz, E-plane (h) 38GHz, E-plane 7. (D).
6 7 (D). θ = 90 0.. (P). P 0, 5, 10, 15 mm 5 mm P 17, 22, 27, 32 mm. P = 0 mm P. 8-10. 8 (a) P P -10 db 10 : 1. P = 0 mm. 10 : 1 P. θ = 90. 10 P θ = 90. 10 P. P = 13 mm.
(a). (b). 8. (P).
(a) 3GHz, E-plane (b) 8GHz, E-plane
(c) 13GHz, E-plane (d) 18GHz, E-plane
(e) 23GHz, E-plane (f) 28GHz, E-plane
(g) 33GHz, E-plane (h) 38GHz, E-plane 9. (P).
10. (P) θ=90. 2.3 End cap (End cap). 11 A-Type B-Type..
(a) A-Type 11.. (b) B-Type 12. End cap. 12 11..
.. 2.4 -. (W) λ/4 25 mm. (B) 3 mm. (G) 1 mm. α 57. (D) θ = 90 20 mm. (P) θ = 90 13 mm.. 13 z z 14 15.. z = 17 mm. 3D 15... 14-16.
, E-plane, H-plane 2D. 13. z. (a) (3 GHz, 8 GHz ).
(b) (13 GHz, 18 GHz ). (c) (23 GHz, 28 GHz ).
(d) (33 GHz, 38 GHz ). 14. z. (a) (3 GHz, 8 GHz ).
(b) (13 GHz, 18 GHz ). (c) (23 GHz, 28 GHz ).
(d) (33 GHz, 38 GHz ). 15. z. (a) 3 GHz
(b) 8 GHz (c) 13 GHz
(d) 18 GHz (e) 23 GHz
(e) 28 GHz (e) 33 GHz
(e) 33 GHz 16. 3D. 17..
17 (Z in = R in + jx in ) 2-40 GHz. 3 GHz 30 GHz R in 37-75 X in -22 - +20.
. 50 SMA. 18 1.. 18. -.
1. -. W B G α D P C t 2a 2b r,, 19-23.
19. -. (a) 3 GHz
(b) 8 GHz (c) 13 GHz
(d) 18 GHz 20. - E-plane. (a) 3 GHz
(b) 8 GHz (c) 13 GHz
(d) 18 GHz 21. - H-plane. 22. -.
23. - θ = 90. 24. -.
- 19-10 db 3 GHz 30 GHz 10 : 1.... 22 6 GHz 16 GHz... 20. 20 (a) 3 GHz θ = 90 θ = 110 (c) 13 GHz θ = 90. θ = 90. ( ) 30 GHz -33 dbi. 20 21. 24. θ = 90. θ = 0. 3 GHz
.. 25. (3.1-10.6 GHz).
26. (3.1-10.6 GHz). 27..
28. (θ = 90 ). 25-28 UWB 3.1-10.6 GHz θ,,. 25. 26 θ = 90 θ = 60. θ = 90 θ = 60. 27. 7 GHz θ = 60 θ = 90, θ = 30. 28. UWB. 28 7 GHz 8 GHz
UWB.
. CST Microwave Studio(MWS ) -... -10 db 3-30 GHz 10 : 1. 3 GHz 0.25λ 0.3λ. 0.25λ 10 : 1.. θ = 90 0.2λ 20 mm. (P).. - (UWB).
[1] H. G. Schantz, "Introduction to ultra-wideband antennas," Proc. 2003 IEEE Conf. Ultra Wideband Sys., 16-19 Nov. 2003, pp. 219-223. [2] H. G. Schantz, "Dispersion and UWB antennas," Proc. 2004 IEEE Int. Workshop Ultra Wideband Sys., 18-21 May, 2004, pp. 161-165. [3] S. Licul and W. A. Davis, "Unified frequency and time-domain antenna modeling and characterization," IEEE Trans. Antennas Propagat., Vol. 53, No. 9, pp. 2882-2888, Sept. 2005. [4] N. Behdad and K. Sarabandi, A compact antenna for ultrawide-band applications," IEEE Trans. Antennas Propagat., Vol. 53, No. 7, pp. 2185-2192, July 2005. [5] Z. H. Chen, "Novel bi-arm monopole for UWB applications," IEEE Trans. Antennas Propagat., Vol. 53, No. 2, pp. 672-677, Feb. 2005. [6] W.-C. Liu, "Design of a multiband CPW-fed monopole antenna using a particle swarm optimization approach," IEEE Trans. Antennas Propagat., Vol. 53, No. 10, pp. 3273-3279, Oct. 2005. [7] S. R. Best, "A multiband conical monopole antenna derived from a modified Sierpinski gasket," IEEE Antennas Propagat. Lett., Vol. 2, No. 1, pp. 205-207, Jan. 2003. [8] W.-S. Lee, W.-G. Lim and J.-W. Yu, "Multiple band-notched planar monopole antenna for multiband wireless systems," IEEE Microwave Guided Wave Lett., Vol. 15, No. 9, pp. 576-578, Sept. 2005. [8] G. Dubost and S. Zisler, Antennas a Large Bande, Paris, New Work: Masson, 1976, pp. 128-129. [9] S. Honda, M. Ito, H. Seki, and Y. Jinbo, "A disk monopole antenna with 1:8 impedance bandwidth and omnidirectional radiation patter," Proc. Int. Symp.
Antennas Propagat., Sapporp, Japan, Sept. 1992, pp. 1145-1148. [10] J. Jung, W. Choi and J. Choi, "A small wideband microstrip-fed monopole antenna," IEEE Microwave Wireless Comp. Lett., Vol. 15, No. 10, pp. 703-705, Oct. 2005. [11] J. Liang, L. Guo, C. C. Chiau and X. Chen, "CPW-fed circular disc monopole antenna for UWB applications," Proc. IEEE Int. Workshop on Antenna Tech., 7-9 Mar. 2005, pp. 505-508. [12] N. P. Agrawall, G. Kumar, and K. P. Ray, "Wide-band planar monopole antennas," IEEE Trans. Antennas Propagat., Vol. 46, No. 2, pp. 294-294, Feb. 1998. [13] J. A. Evans and M. J. Ammann, "Planar trapezoidal and pentagonal monopoles with impedance bandwidths in excess of 10: 1," Dig. IEEE Ant. Propagat. Soc. Int. Symp., pp. 1558-1561, July 1999. [14] M. J. Ammann, R. Sierra Cordoba, M. Uzelac, J. A. Evans, and A. T. Schwarzbacher, On pattern stability of the crossed planar monopole, Microwave Optical Technol Lett, Vol. 40, No. 4, pp. 294-296, Feb 2004. [15] M. J. Ammann, "Improved pattern stability for monopole antennas with ultra wideband impedance characteristics," Dig. IEEE Ant. Propagat. Soc. Int. Symp., Vol. 1, pp. 818-821, June 2003. [16] K.-L. Wong, Y.-W. Chi and C.-H. Wu. "Wideband tri-plate monopole antenna," Electron. Lett., 25th, Vol. 40, No. 24, Nov 2004. [17] Kin-Lu Wong, Saou-Wen Su, and Chia-Lun Tang, "Broadband omni directional metal-plate monopole antenna," IEEE Trans. Antennas Propagat., Vol. 53, No. 1, pp. 581-583, Jan. 2005. [18] K. A. AL-Badwaihy, J. L. YEN "Hemispherically capped thick cylindrical monopole with a conical feed section," IEEE Trans. Antennas Propagat., Vol. 22, No 3, pp. 477-481, May. 1974. [19] Steven R, "A multiband conical monopole antenna derived from a modified
sierpinski gasket," IEEE Antenna Wireless propagat. lett., Vol. 2, No. 1, pp. 205-207, 2003. [20] Jingli Guo, Qizhong Liu and Bin Zhou, "Conical monopole antennas on finite ground planes," Microwave and Millimeter Wave Tech., ICMMT 4th Int. Conference on Pro., 18-21, pp. 16-18, Aug, 2004 [21] Ki-Hak Kim, Jin-U Kim, and Seong-Ook Park, "An ultrawide-band double discone antenna with the tapered cylindrical wires," IEEE Trans. Antennas Propagat., Vol. 53, No 10, pp. 3403-3406, Oct. 2005. [22] Qi Wang, Chengli Ruan, Qingqiang He, "Study on the broadband properties of a wire conical monopole antenna," Int. Conference on Microwave and Millimeter Wave Technology Pro., 4th, 18-21, pp. 43-45, Aug, 2004. [23] Taeyoung Yang, Seong-Youp Suh, Randall Nealy, William A. Davis, and Warren L. Stutzman, "Compact antennas for UWB applications," IEEE A&E systems magazine, Vol. 19, pp. 16-20, May. 2004