Design And Performance of Flux-Flow Type Josephson Oscillator Coupled To A Stripline

K. Yoshida; K. Kudo; K. Enpuku

doi:10.1109/20.133930

Design And Performance of Flux-Flow Type Josephson Oscillator Coupled To A Stripline

K. Yoshida, K. Kudo, K. Enpuku

Superconductive Systems Engineering Laboratory

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

4 Citations (Scopus)

Abstract

In order to realize efficient coupling between Flux-Flow type Josephson Oscillator (FFO) and an external stripline, we have carried out experiments to investigate the inductive coupling scheme in strong coupling regime. By adopting NbN films with large penetration depths as electrodes for strong coupling, we have realized coupling sections with coupling coefficient a M/L1L2 as large as 0.7, with M, Ll and L2 being mutual inductance, self inductances of FFO and the stripline, respectively. Employing this design for the coupling, we have succeeded in detecting ac fields at frequencies around 150 GHz, which were emitted from FFO to the stripline via the coupling section. The present results suggest the excellence of the strong coupling regime in inductive coupling scheme with respects to output power as well as bandwidth.

Original language	English
Pages (from-to)	3351-3354
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	27
Issue number	2
DOIs	https://doi.org/10.1109/20.133930
Publication status	Published - Mar 1991

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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abstract = "In order to realize efficient coupling between Flux-Flow type Josephson Oscillator (FFO) and an external stripline, we have carried out experiments to investigate the inductive coupling scheme in strong coupling regime. By adopting NbN films with large penetration depths as electrodes for strong coupling, we have realized coupling sections with coupling coefficient a M/L1L2 as large as 0.7, with M, Ll and L2 being mutual inductance, self inductances of FFO and the stripline, respectively. Employing this design for the coupling, we have succeeded in detecting ac fields at frequencies around 150 GHz, which were emitted from FFO to the stripline via the coupling section. The present results suggest the excellence of the strong coupling regime in inductive coupling scheme with respects to output power as well as bandwidth.",

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AU - Yoshida, K.

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AU - Enpuku, K.

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N2 - In order to realize efficient coupling between Flux-Flow type Josephson Oscillator (FFO) and an external stripline, we have carried out experiments to investigate the inductive coupling scheme in strong coupling regime. By adopting NbN films with large penetration depths as electrodes for strong coupling, we have realized coupling sections with coupling coefficient a M/L1L2 as large as 0.7, with M, Ll and L2 being mutual inductance, self inductances of FFO and the stripline, respectively. Employing this design for the coupling, we have succeeded in detecting ac fields at frequencies around 150 GHz, which were emitted from FFO to the stripline via the coupling section. The present results suggest the excellence of the strong coupling regime in inductive coupling scheme with respects to output power as well as bandwidth.

AB - In order to realize efficient coupling between Flux-Flow type Josephson Oscillator (FFO) and an external stripline, we have carried out experiments to investigate the inductive coupling scheme in strong coupling regime. By adopting NbN films with large penetration depths as electrodes for strong coupling, we have realized coupling sections with coupling coefficient a M/L1L2 as large as 0.7, with M, Ll and L2 being mutual inductance, self inductances of FFO and the stripline, respectively. Employing this design for the coupling, we have succeeded in detecting ac fields at frequencies around 150 GHz, which were emitted from FFO to the stripline via the coupling section. The present results suggest the excellence of the strong coupling regime in inductive coupling scheme with respects to output power as well as bandwidth.

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Design And Performance of Flux-Flow Type Josephson Oscillator Coupled To A Stripline

Abstract

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