A Tapped-Delay-Line Superconductive Chirp Filter in Shielded Microstrip

Roland Ramisch; Gerhard R. Olbrich; Peter Russet

doi:10.1109/22.83833

A Tapped-Delay-Line Superconductive Chirp Filter in Shielded Microstrip

Roland Ramisch, Gerhard R. Olbrich, Peter Russet

Technical University of Munich

Technical University of Munich

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

11 Scopus citations

Abstract

A superconducting chirp filter having a dispersive time delay of 26 ns and a 3.4 GHz bandwidth centered at 4.7 GHz has been fabricated using a niobium-on-silicon shielded microstrip technology. Along a 2X1.6 m delay line, unequally spaced microstrip directional couplers are employed as sampling devices. To achieve an improvement in dispersion and coupler directivity over conventional microstrip, the device uses a superconductive shield mounted at a distance equal to the height of the dielectric on top of the microstrip structure. Structural support of the 70-|xm-thin high-resistivity dielectric is provided by a large-area bond to a glass substrate.

Original language	English
Pages (from-to)	1575-1581
Number of pages	7
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	39
Issue number	9
DOIs	https://doi.org/10.1109/22.83833
State	Published - Sep 1991

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title = "A Tapped-Delay-Line Superconductive Chirp Filter in Shielded Microstrip",

abstract = "A superconducting chirp filter having a dispersive time delay of 26 ns and a 3.4 GHz bandwidth centered at 4.7 GHz has been fabricated using a niobium-on-silicon shielded microstrip technology. Along a 2X1.6 m delay line, unequally spaced microstrip directional couplers are employed as sampling devices. To achieve an improvement in dispersion and coupler directivity over conventional microstrip, the device uses a superconductive shield mounted at a distance equal to the height of the dielectric on top of the microstrip structure. Structural support of the 70-|xm-thin high-resistivity dielectric is provided by a large-area bond to a glass substrate.",

author = "Roland Ramisch and Olbrich, {Gerhard R.} and Peter Russet",

note = "Funding Information: Manuscript received November 15, 1990; revised February 19, 1991. This work was supported by Siemens AG and by the Deutsche Forschungsgemeinschaft. The authors are with the Technische Universitat Munchen, 21, D-8000 Miinchen 2, Germany. IEEE Log Number 9101128.",

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AU - Russet, Peter

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AB - A superconducting chirp filter having a dispersive time delay of 26 ns and a 3.4 GHz bandwidth centered at 4.7 GHz has been fabricated using a niobium-on-silicon shielded microstrip technology. Along a 2X1.6 m delay line, unequally spaced microstrip directional couplers are employed as sampling devices. To achieve an improvement in dispersion and coupler directivity over conventional microstrip, the device uses a superconductive shield mounted at a distance equal to the height of the dielectric on top of the microstrip structure. Structural support of the 70-|xm-thin high-resistivity dielectric is provided by a large-area bond to a glass substrate.

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A Tapped-Delay-Line Superconductive Chirp Filter in Shielded Microstrip

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