Novel Coupling Matrix Synthesis for Single-Layer Substrate-Integrated Evanescent-Mode Cavity Tunable Bandstop Filter Design

Shahrokh Saeedi; Juseop Lee; Hjalti H. Sigmarsson

doi:10.1109/TMTT.2015.2490075

Novel Coupling Matrix Synthesis for Single-Layer Substrate-Integrated Evanescent-Mode Cavity Tunable Bandstop Filter Design

Shahrokh Saeedi, Juseop Lee, Hjalti H. Sigmarsson

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

A new technique for designing tunable bandstop filters is presented. A novel coupling matrix synthesis method for this type of bandstop filter is shown. Phase cancellation, through combining two bandpass filters, is used to derive the coupling matrix. Therefore, classical coupling mechanisms utilized to implement bandpass filters can be used to design and realize bandstop filters. Using this method, bandstop filters can be designed without source-to-load coupling. This eliminates the need for a second substrate when compared to previously reported bandstop filters implemented using substrate-integrated evanescent-mode cavity technology, though the method itself is quite general. Finally, examples of tunable bandstop filters in the range from 3.0 to 3.6 GHz are demonstrated to verify the proposed method.

Original language	English
Article number	7305844
Pages (from-to)	3929-3938
Number of pages	10
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	63
Issue number	12
DOIs	https://doi.org/10.1109/TMTT.2015.2490075
Publication status	Published - 2015 Dec

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

Keywords

Bandstop filter
coupling matrix synthesis
phase cancellation
source-to-load coupling
tunable

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TMTT.2015.2490075

Cite this

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abstract = "A new technique for designing tunable bandstop filters is presented. A novel coupling matrix synthesis method for this type of bandstop filter is shown. Phase cancellation, through combining two bandpass filters, is used to derive the coupling matrix. Therefore, classical coupling mechanisms utilized to implement bandpass filters can be used to design and realize bandstop filters. Using this method, bandstop filters can be designed without source-to-load coupling. This eliminates the need for a second substrate when compared to previously reported bandstop filters implemented using substrate-integrated evanescent-mode cavity technology, though the method itself is quite general. Finally, examples of tunable bandstop filters in the range from 3.0 to 3.6 GHz are demonstrated to verify the proposed method.",

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Novel Coupling Matrix Synthesis for Single-Layer Substrate-Integrated Evanescent-Mode Cavity Tunable Bandstop Filter Design

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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