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De-embedding response of filters from diplexer measurements

Authors
  • Seyfert, Fabien
  • Oldoni, Matteo
  • Macchiarella, Giuseppe
  • Pacaud, Damien
Publication Date
Aug 10, 2012
Source
HAL-UPMC
Keywords
Language
English
License
Unknown
External links

Abstract

In this article, we present two methods to de-embed the filters' responses from a diplexer whose junction is known. A weak identification problem is here described by means of a dual-state junction and can be applied for general diagnosis of prototype diplexers. A strong identification problem based on rationality of the filters is also introduced here and is suited for a real-time tuning process. This technique is based on a polynomial approximation derived analytically from the algebraic structure of the diplexer's response. Additional unknown delays violating the rational assumption can be moreover detected and estimated.

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