Frequency Adjustable Dual-Band Microstrip Gap-Ring-Slot Antenna Design Using the Cylindrical TLM Method
Keywords:
Cylindrical meshing, dual-band patch antennas, frequency tuning, gap ring slot, transmission line-matrix methodAbstract
This paper introduces a design of a frequency adjustable dual-band circular patch antenna with a gapring- slot accompanied by a study of a cylindrical TLM method effectiveness and capabilities. The antenna is fabricated on Rogers 4003 substrate and measured results have been used to validate the used approach. Through comparison with corresponding rectangular TLM mesh results, the cylindrical TLM method has been found not only as more efficient requesting much smaller number of cells to be applied but also more capable to accurately describe narrow ring slots and small angular features. The designed antenna resonates at two frequencies, 2.77 GHz and 3.72 GHz, with the possibility of additional frequency tuning. A frequency adjustments study has been carried out and, accordingly, design corrections have been proposed either to independently tune the frequency or to simultaneously adjust both frequencies.
Downloads
References
C. A. Balanis, Antenna Theory: Analysis and Design. John Wiley & Sons, New York, 2012.
R. Garg, Microstrip Antenna Design Handbook. Artech House, 2001.
C. Christopoulos, The Transmission-Line Modelling Method: TLM. IEEE Press, 1995.
https://www.cst.com, 2018.
R. F. Harrington, Field Computation by Moment Method. IEEE Press, New York, 1993.
A. Z. Elsherbeni and V. Demir, The FiniteDifference Time-Domain Method for Electromagnetics with MATLAB Simulations. 2nd Edition (ACES Series on Computational Electromagnetics and Engineering). Edison, NJ: SciTech Publishing, an Imprint of the IET, 2015.
J. R. Brauer, Finite-Element Method. Magnetic Actuators and Sensors, Wiley-IEEE Press, 2014.
T. Z. Dimitrijevic, J. J. Jokovic, and N. S. Doncov, “Efficient modeling of a circular patch-ring antenna using the cylindrical TLM approach,” IEEE Antenn. Wirel. Pr., vol. 16, pp. 2070-2073, Apr. 2017.
H. Tehrani and K. Chang, “Multifrequency operation of microstrip-fed slot-ring antennas on thin low-dielectric permittivity substrates,” IEEE Trans Antennas Propag., vol. 50, no. 9, pp. 1299-1308, Sep. 2002.
X. L. Bao and M. J. Ammann, “Comparison of several novel annular-ring microstrip patch antennas for circular polarization,” J. Electromag. Waves Appl., vol. 20, no. 11, pp. 1427-1438, 2006.
X. L. Bao and M. J. Ammann, “Microstrip-fed dual-frequency annular-slot antenna loaded by splitring-slot,” IET Microwaves Antennas Propag., vol. 3, no. 5, 757-764, July 2009.
R. L. Farias, C. Lucatel, and M. V. T. Heckler, “Dual-band annular slot antenna for radio base stations,” The 8th European Conference on Antennas and Propagation (EuCAP 2014), The Hague, pp. 2055-2059, 2014.
Y.-F. Lin, Y.-C. Kao, S.-C. Pan, and H.-M. Chen, “Bidirectional radiated circularly polarized annularring slot antenna for portable RFID reader,” ACES Journal, vol. 23, no. 3, pp. 182-189, Mar. 2010.
G. M. Kale, R. P. Labade, and R. S. Pawase, “Open rectangular ring slot loaded rectangular microstrip antenna for dual frequency operation,” Microw. Opt. Technol. Lett., vol. 57, pp. 2448-2452, July 2015.
J. Kim, T. Jung, H. Ryu, J. Woo, C. Eun, and D. Lee, “Compact multiband microstrip antenna using inverted-L- and T-shaped parasitic elements,” IEEE Antennas Wirel. Propag. Lett., vol. 12, pp. 1299- 1302, Sep. 2013.
D. Guan, Z. Qian, W. Cao, L. Ji, and Y. Zhang, “Compact SIW annular ring slot antenna with multiband multimode characteristics,” IEEE Trans. Antennas Propag., vol. 63, no. 12, pp. 5918-5922, Dec. 2015.
T. Dimitrijevic, J. Joković, and N. Doncov, “TLM modeling of an annular ring coupled to a circular patch with a shorting pin,” Proc. TELSIKS 2015, Nis, Serbia, pp. 200-204, Oct. 2015.
T. Dimitrijević, J. Joković, and N. Dončov, “Advantages of using integral cylindrical TLM method for modelling of coax-fed microstrip circular antenna,” Proc. TELSIKS 2013, Nis, Serbia, pp. 200-204, Oct. 33-36, 2013.
P. Sewell, T. M. Benson, C. Christopoulos, D. W. P. Thomas, A. Vukovic, and J. G. Wykes, “Transmission-line modeling (TLM) based upon unstructured tetrahedral meshes,” IEEE Trans. Microw. Theory Tech., vol. 53, no. 6, pp. 1919- 1928, June 2005.
X. Meng, P. Sewell, N. H. A. Rahman, A. Vukovic, and T. M. Benson, “Experimental benchmarking of unstructured transmission line modelling (UTLM) method in modelling twisted wires,” ACES Express Journal, vol. 1, no. 3, pp. 101-104, Mar. 2016.
H. Meliani, D. De Cogan, and P. B. Johns, “The use of orthogonal curvilinear meshes in TLM models,” Int. J. Numer. Model. Electron. Netw. Devices Fields, vol. 1, no. 4, pp. 221-238, Dec. 1988.
T. Dimitrijević, J. Joković, B. Milovanović, and N. Doncov, “TLM modeling of a probe-coupled cylindrical cavity based on compact wire model in the cylindrical mesh,” Int. J. RF Microw. Comput.- Aided Eng., vol. 22, no. 2, pp. 184-192, Mar. 2012.
R. Scaramuzza and A. J. Lowery, “Hybrid symmetrical condensed node for the TLM method,” Electron Lett., vol. 26, no. 23, pp. 1947-1949, Nov. 1990.
V. Trenkic, A. J. Wlodarczyk, and R. A. Scaramuzza, “Modeling of coupling between transient electromagnetic field and complex wire structures,” Int. J. Numer. Model. Electron. Netw. Devices Fields, vol. 12, no. 4, pp. 257-273, July 1999.
K.-L. Wong and W.-S. Chen, “Compact microstrip antenna with dual-frequency operation,” Electron. Lett., vol. 33, no. 8, p. 646, Apr. 1997.
K.-P. Yang and K.-L. Wong, “Dual-band circularlypolarized square microstrip antenna,” IEEE Trans. Antennas Propag., vol. 49, no. 3, pp. 377-382, Mar. 2001.
Nasimuddin, Z. N. Chen, and X. Qing, “Dual-band circularly polarized S-shaped slotted patch antenna with a small frequency-ratio,” IEEE Trans. Antennas Propag., vol. 58, no. 6, pp. 2112-2115, June 2010.
D. Yu, S. Gong, Y. Wan, and W. Chen, “Omnidirectional dual-band dual circularly polarized microstrip antenna using TM01 and TM02 modes,” IEEE Trans. Antennas Propag., vol. 13, pp. 1104- 1107, June 2014.
