Non-Linear Behaviour in Commonly Used Non- Polar Dielectrics at Microwave Frequencies in Space RF Components | ||||
International Conference on Aerospace Sciences and Aviation Technology | ||||
Article 40, Volume 7, ASAT Conf. 13-15 May 1997, May 1997, Page 1-12 PDF (2.61 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/asat.1997.25432 | ||||
View on SCiNiTO | ||||
Authors | ||||
Safwat El-Nahass1; Tawfik Khattab2 | ||||
1R & D, Depratment Manager, EAF. | ||||
2R & D Depratment EAF. | ||||
Abstract | ||||
In space RF communications payloads, it is increasingly required that high-power multi-channel transmitters and broadband receivers have shared, or closely adja-cent RF feeds. Because of the large power level difference between the transmit and receive signals and the limitation of frequency allocation, harmonics genera-tion due to passive non-linearities in the high-power transmission path can be a se-rious problem. This paper describes how to determine the signal levels and dominant mechanisms associated with non-linear dielectric behaviour in this con-text. A novel measurement system for testing dielectric samples is described and measurement results are provided for commonly used microwave dielectrics. | ||||
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