Evaluation of Losses in Pedestal Supported Finlines

B. Gupta; S. Sural Majumdar

doi:10.14429/dsj.49.3834

B. Gupta Jadavpur University, Calcutta
S. Sural Majumdar Jadavpur University, Calcutta

DOI: https://doi.org/10.14429/dsj.49.3834

Keywords: Missile guidance, Millimeter waves, Radars

Abstract

A technique for evaluation of conductor and dielectric losses in pedestal-supported finlines using mixed spectral domain approach has been presented. All field components were computed through application of Galerkin' s technique in spectral domain, assuming weighted basis functions to represent unknown electric voltages, i.e., magnetic currents. In the process, the propagation constant along the line was also accurately computed. The aim was to study attenuation behaviour of these lines wrt variation in dimensional and other structural parameters. The results indicated a specific dimensional range within which their use is justifiable. The potential defence applications of pedestal-supported finlines is in millimeter wave systems, e.g., radars, missile guidance systems, etc.

Author Biographies

B. Gupta, Jadavpur University, Calcutta

Mr B Gupta obtained his ME (Telecom Engg) and PhD (Engg) both from the Jadavpur University,Calcutta, in 1984 and 19%, respectively. His research areas include computational electromagnetics,especially planar and quasi-planar circuits, including antennas and mathematical modelling. He is asenior member of the Institution of Engineers (India), IEEE, USA and a life member of Society ofEMC Engineers (India). He is associated @h a number of sponsored research projects and haspublished more than 18 research papers and also co-authored a book.

S. Sural Majumdar, Jadavpur University, Calcutta

Ms S Sural Majumdar obtained her ME (Elect & Telecom Engg) from the Jadavpur University,Calcutta, in 1992 and 1995, respectively. Presently, she is working with CMC, Ltd. Her areas of, research include software development in computer communication, microwave communication andsoftware engineering.

References

Bhat, B. & Koul, S.K. Analysis, design and applications of finlines. Artech House Inc., 1987. pp. 1-30

Archer, J.W. An efficient 200-250 GHz frequency tripler incorporating a novel stripline structure. IEEE Trans. Microw. Theory Tech., 1984, MTT-32, 416-20.

Chan, C.H.; Kwong, T. NG & Kouki, A.B. A mixed spectral domain approach for dispersion analysis of suspended planar transmission lines with pedestals. IEEE Trans. Microw. Theory Tech., 1989, MTT-37, 17 16-723.

Mirshekar Syahkal D. & Davies, J.B. An accurate, unified solution of various finline structures of phase constant, c Characteristic impedance and attenuation. IEEE Trans. Microw. Theory Tech., 1982, MTT-30,1854-861.

Jordan, E.C. & Balmain, K.G. Electromagnetic waves and radiating systems. Prentice Hall India Ltd., India, 1991. 155 p.