The Effect of High Power at Microwave Frequencies on the Linearity of Non-Polar Dielectrics in Space RF component

Tawfik Elsayed Khattab

doi:10.4236/ijcns.2015.82002

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International Journal of Communications,... > Vol.8 No.2, February 2015

The Effect of High Power at Microwave Frequencies on the Linearity of Non-Polar Dielectrics in Space RF component ()

Tawfik Elsayed Khattab^*

Department of Electrical Engineering, Engineering College, King Khalid University, Abha, Saudi Arabia.

DOI: 10.4236/ijcns.2015.82002 PDF HTML XML 2,173 Downloads 2,559 Views Citations

Abstract

In satellite communication systems, there are high power multichannel transmitters and wideband receivers that have shared RF antenna transmission lines because of: 1) large power level difference between the transmitted and received signal; 2) limited frequency channels. The harmonics and Passive Intermodulation (PIM) Interference will be generated due to passive non-linearities in the high power transmission path. This can be a serious problem. This paper describes how to determine the signal levels and dominant mechanisms that are associated with non-linear dielectric behavior in this context. A novel measurement system for testing dielectric samples is described and measurement results are provided for commonly used microwave dielectrics.

Keywords

Passive Intermodulation, PIM, Nonlinear, Polar Dielectric, Harmonics, Cavity Resonator

Share and Cite:

Khattab, T. (2015) The Effect of High Power at Microwave Frequencies on the Linearity of Non-Polar Dielectrics in Space RF component. International Journal of Communications, Network and System Sciences, 8, 11-18. doi: 10.4236/ijcns.2015.82002.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Khattab, T. and Rawlins, A.D. (1996) Principle of Low PIM Hardware Design. 13th National Radio Science Conference, NRSC’96, Cairo, 19-21 March 1996, 355-362. http://dx.doi.org/10.1109/NRSC.1996.551127
[2]	Foord, A.P. and Rawlins, A.D. (1992) A Study of Passive Intermodulation Interference in Spce RF Hardware. ESA Report, University of Kent, Canterbury.
[3]	Burfoot, J.C. and Taylor (1979) Polar Dielectrics and Their Applications. Macmillan Press, London.
[4]	Landau, L.D. and Lifshitz, E.M. (1984) Electrodynamics of Continuous Media. Pregamon Press, Oxford.
[5]	Stauss, G.H. (1980) Studies on the Reduction of Intrmodulation Generation in Communication Systems. NRL Memorandum Report 4233, 75-79.
[6]	Smyth, C.P. (1995) Dielectric Behavior and Structure. McGraw-Hill, New York.
[7]	Zheludev, I.S. (1971) Physics of Crystalline Dielectrcs, Volume 2, Electrical Properties. Plenum Press, New York.
[8]	Bogoroditskii, N.P. and Pasynkov, V.V. (1968) Radio and Electronic Materials. Iliffe Books, London.
[9]	Bottcher, C.J.F. (1973) Theory of Electric Polarization, Volume 1. Elsevier, Amsterdam, 318-323.
[10]	Kumar, A. (1987) Passive IM Products Threaten High Power Satcom Systems. Microwave & RF, 26, 98-103.
[11]	Nishikawa, T., Ishikawa, Y. and Hattori, J. (1988) Measurement Method of Intermodulation Distortion of Dielectric Resonator. Japanese Journal of Applied Physics, 39-45