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Principles of low PIM hardware design

Khattab, T. and Rawlins, A.D. (1996) Principles of low PIM hardware design. In: Thirteenth National Radio Science Conference. NRSC '96. IEEE, pp. 355-362. ISBN 0-7803-3656-9. (doi:10.1109/NRSC.1996.551127) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1109/NRSC.1996.551127

Abstract

In space RF communications payloads, it is increasingly required that high-power multi-channel transmitters and broadband receivers have shared, or closely adjacent RF feeds. Because of the large power level difference between the transmit and receive signals and the limitation of frequency allocation, passive intermodulation (PIM) interference due to passive non-linearities in the high-power transmission path can be serious problem. One of the main sources of PIM in RF microwave systems is the metal-to-metal contact. A contact model regardless of the suspected non-linear mechanisms, i.e. semiconductor, electron tunnelling and microdischarge, has been used to explain the non-linear effect at metallic contacts. The model requires that the non-linear effect is current dependent and the PIM level is proportional to the current density at the contacts. Because metal-to-metal contact in an RF coaxial connector is unavoidable, an alternative has to be developed. The work reported represents some of our efforts toward developing a demountable RF coaxial connector which does not involve metal-to-metal contact in any electrically significant part, i.e. a "contactless connector". The novel design of the coaxial contactless connector and the theoretical analysis are described.

Item Type: Book section
DOI/Identification number: 10.1109/NRSC.1996.551127
Additional information: 13th National Radio Science Conference (NRSC 96) MILITARY TECH COLL, CAIRO, EGYPT, MAR 19-21, 1996 Acad Sci Res & Technol, Natl Radio Sci Comm; Int Union Radio Sci; IEEE
Uncontrolled keywords: hardware; radio frequency; contacts; coaxial components; connectors; payloads; transmitters; feeds; radio spectrum management; interference
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Depositing User: R.F. Xu
Date Deposited: 04 Jun 2009 16:19 UTC
Last Modified: 01 Aug 2019 08:28 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/19285 (The current URI for this page, for reference purposes)
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