volume | PIER Journals

Abstract

Main intension is to calculate admittance and radiation pattern of longitudinal shunt slot in rectangular waveguide using Method of Moments (MoM) technique. Resonant length calculation of the slot is a critical parameter in the design of waveguide slot array antenna. All computed results are compared with simulated results. CST Microwave studio is used for the simulation and is totally based on FIT techniques. For computation purpose MATLAB 7.0 is used. The numerical data on transmission and reflection coefficient are evaluated. Method of moment solution is used to calculate resonant length versus slot offset for given waveguide dimension and frequency. E and H field radiation pattern are calculated for different offset in different frequencies.

1. Oliner, A. A., "The impedance properties of narrow radiating slots in the broad face of rectangular waveguide, Part I—Theory," IRE Trans. Antennas Propagat., Vol. 5, 4-20, Jan. 1957.
doi:10.1109/TAP.1957.1144488

2. Stevenson, A. F., "Theory of slots in rectangular waveguides," J. Appl. Phys., Vol. 19, 24-38, Jan. 1948.
doi:10.1063/1.1697868

3. Khac, T. B., "A study of some slot discontinuities in rectangular waveguides," Ph.D. dissertation, Monash University, Australia, Nov. 1974.

4. Lyon, R. W. and A. J. Sangster, "Efficient moment method analysis of radiating slots in a thick walled rectangular waveguide," Proc. Inst. Elec. Eng., Vol. 128, Pt. H, No. 4, 197-205, Aug. 1981.

5. Stegen, R. J., "Longitudinal shunt slot characteristics," Hughes Tech. Memo., 261, Nov. 1971.

6. Raju, G. S. N., Investigation on slot coupled junctions and radiating slots, Ph.D. dissertation, Department of Electronics & Electrical Engineering, Indian Institute of Technology, Kharagpur, 1987.

7. Harrington, R. F., Field Computation by Moment Methods, MacMillan, 1968.

8. Elliott, R. S., Antenna Theory and Design, Prentice-Hall, 1981.

9. Stern, G. J. and R. S. Elliot, "Resonant length of longitudinal slots and validity of circuit representation: Theory and experiment," IEEE Trans. Antennas Propagat., Vol. 33, 1264-1271, Nov. 1985.

10. Young, J. C., J. Hirokawa, and M. Ando, "Analysis of a rectangular waveguide, edge slot array with finite wall thickness," IEEE Trans. Antennas Propag., Vol. 55, No. 3, 812-818, Mar. 2007.
doi:10.1109/TAP.2007.891806

11. Das, S. and A. Chakrabarty, "A novel modeling technique to solve a class of rectangular waveguide based circuit and radiator," Progress In Electromagnetic Research, Vol. 61, 231-252, 2006.
doi:10.2528/PIER06010302

12. Tiwari, A. K., D. R. Poddar, and B. N. Das, "On the equivalent radius of a radiating slot in impedance calculation," Progress In Electromagnetic Research, Vol. 74, 47-56, 2007.
doi:10.2528/PIER07041904

13. Khalaj-Amirhosseini, M., "Analysis of longitudinally inhomogeneous waveguides using the method of moments," Progress In Electromagnetics Research, Vol. 74, 57-67, 2007.
doi:10.2528/PIER07042101

14. Das, S., A. Chakrabarty, and A. Chakraborty, "Characteristics of an offset longitudinal/transverse slot coupled crossed waveguide junction using multiple cavity modeling technique considering the TE00 mode at the slot aperture ," Progress In Electromagnetics Research, Vol. 67, 297-316, 2007.
doi:10.2528/PIER06092701

15. Park, J. K., J. N. Lee, D. H. Shin, and H. J. Eom, "A full-wave analysis of a coaxial waveguide slot bridge using the Fourier transform technique ," J. of Electromagn. Waves and Appl., Vol. 20, No. 2, 143-158, 2006.
doi:10.1163/156939306775777198

16. Khalaj-Amirhosseini, M., "Analysis of longitudinally inhomogeneous waveguides using the Fourier series expansion," J. of Electromagn. Waves and Appl., Vol. 20, No. 10, 1299-1310, 2006.
doi:10.1163/156939306779276758

Dr. Moutusi Mondal

Professor Ajay Chakraborty