Longitudinal Shunt Slot Excitation by Wiggly Ridge Substrate Integrated Waveguide
Subject Areas : Renewable energy
Mehdi
Salemi
1
(Azad university of najafabad)
Mehdi
Moradian
2
(Islamic Azad University of Najafabad)
Reza
Safian
3
(Isfahan University of Technology)
Keywords: HFSs, Longitudinal shunt slot, ridge substrate integrate waveguide, Wiggly, crinkle, antenna, Offset, butterfly lobes,
Abstract :
Application of a substrate integrated waveguide with wiggly ridge shape is presented for excitation longitudinal shunt slot antenna. Two main design equations for design substrate integrated waveguide structure and get parameters of structures, for longitudinal shunt slot excitation by shape wiggly ridge in substrate integrated waveguide are modified. Proposed method is used by applied the crinkle shape to ridge for ridge substrate integrated waveguide structure. This shape wiggly ridge just under longitudinal slot. The slot is place at centreline of substrate integrated waveguide (siw) in center of waveguide and on dielectric copper surface, top of substrate integrated waveguide. Amount of crinkle depth of waveguide centreline is proportional with needful radiation of slot and normalized conductance could be much to increase crinkle depth. In this paper the shunt element distribution assumption for prposed structure is spoted. Results of simulation show, proposed method is suitable candidate for replacing with usual longitudinal shunt slot. Structure’s useful is, low fabrication price, small profile and adaptation with microstrip circuit. Also slot place along waveguide centerline and wiggle depth substitute slot offset, therefore this procedure can suppress second order bim in array containing suggestion structure.
[1] L.A. Kurtz, J.S. Yee, "Second-order beams of two dimensional slot arrays", IRE Trans., AP-5, pp. 356-36, 1957.
[2] K. Forooraghi, P-S Kildal, "Transverse radiation pattern of a slotted waveguide array radiating between finite height baffles in terms of a spectrum of two-dimensional solutions", Proc. Inst. Elec. Eng., pt. H, Microwaves Antennas and Propagation, Vol. 140, No. 1, pp. 52-58, Feb. 1993.
[3] H.S. Jones, W.G. Heinard, "An improved slot array using post excitation", Microwave Journal, Vol. 8, pp. 69-72, July 1965.
[4] R.E. Clapp, "Probe-fed slots as radiating elements in linear arrays", MIT Rad. Lab. Series Report, No. 455.25, Jan. 1944.
[5] W.E. Kummer, "Iris-excited shunt slots in rectangular waveguide, theory and experiment", Ph.D. Dissertation, University of California Los Angeles, 1989.
[6] M. Moradian, M. Khalaj-Amirhosseini, M. Tayarani, "Application of wiggly ridge waveguide for design of linear array antennas of centered longitudinal shunt slot", International Journal of RF and Microwave Computer-Aided Engineering, Vol. 19 ,No. 6 , pp. 717–726, Nov. 2009.
[7] M. Moradian, M. Khalaj-Amirhosseini, M. Tayarani, "Design of planar slotted array antenna fed by single wiggly-ridge waveguide", International Journal of RF and Microwave Computer-Aided Engineering, Vol. 20, No. 6, pp. 593–602, Nov. 2010.
[8] M. Moradian, M. Tayarani, M. Khalaj-Amirhosseini, "Planar slotted array antenna fed by single wiggly-ridge waveguide", IEEE Antennas and Wireless Propagation Letters, Vol. 10, 21 July 2011.
[9] R.S. Elliott, "An improved design procedure for small arrays of shunt slots", IEEE Trans. Antennas Propag., Vol. AP-31, No. 1, pp. 48-53, Jan.1983.
[10] N. Marquvitz, Waveguide handbook, Peter pregrinus Ltd on behalf of the institution Electrical engineers, 1986.
[11] W. Che, K. Deng, D. Wang, L. Xu, Y.L. Chow, "Analytical equivalence between substrate-integrated waveguide (SIW) and rectangular waveguide", IET Microwaves, Antennas and Propagation, Vol. 2, No.1, pp. 35-41, Feb. 2008.
[12] R.S. Elliott, Antenna Theory and Design, Prentice Hall, Inc., Englewood Cliffs, NJ, 1981.
[13] D.Y. Kim, R.S. Elliott, "A design procedure for slot arrays fed by single-ridge waveguide", IEEE Trans. Antennas Propag., Vol. 36, No. 11, pp. 1531–1536, Nov. 1988.
_||_