Microstrip ring resonator technique for measuring microwave attenuation in high-T/sub c/ superconducting thin films

Takemoto, J.H.; Oshita, F.K.; Fetterman, Harold R.; Kobrin, P. H.; Sovero, E.A.

doi:10.1109/22.41013

Cited by 28 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Attenuation is a primary material parameter in electronics. It is of particular interest in circuitry implemented in novel materials such as high critical temperature superconductors (HTSC) [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Electrical Properties of Superconducting YBCO Thin Films in the VHF Range

et al. 2021

View full text Add to dashboard Cite

A new measurement technique of electrical parameters of superconducting thin films at the Very High Frequency (VHF) range is described, based on resonators with microstrip (MS) structures. The design of an optimal resonator was achieved, based on a thorough theoretical analysis, which is required for derivation of the exact configuration of the MS. A theoretical model is presented, from which an expression for the attenuation of a MS line can be derived. Accordingly, simulations were performed, and an optimal resonator for the VHF range was designed and implemented. Production constraints of YBa2Cu3O7 (YBCO) limited the diameter of the sapphire substrate to 3″. Therefore, a meander configuration was formed to fit the long λ/4 MS line on the wafer. By measuring the complex input reflection coefficients of a λ/4 resonator, we extracted the quality factor, which is mainly affected by the dielectric and conductor attenuations. The experimental results are well fitted by the theoretical model. The dielectric attenuation was calculated using the quasi-static analysis of the MS line. An identical copper resonator was produced and measured to compare the properties of the YBCO resonator in reference to the copper one. A quality factor of ~6·105 was calculated for the YBCO resonator, three orders of magnitude larger than that of the copper resonator. The attenuation per unit length of the YBCO layer was smaller by more than five orders of magnitude than that of the copper.

show abstract

Section: Introductionmentioning

confidence: 99%

Measurement of Electrical Properties of Superconducting YBCO Thin Films in the VHF Range

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Passive planar supeconductor circuits such as transmission lines, filters, and resonators have shown substantial improvement over identical circuits fabricated with gold, silver, or copper metallization [4][5][6][7]. The demonstration of practical microwave circuits utilizing high-temperature superconductors has prompted investigations into how high-temperature superconductors may be used in antenna systems [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Resonance of High Tc Superconducting Microstrip Patch in a Substrate-Superstrate Configuration

Benkouda¹,

Fortaki

Amir

et al. 2014

AEM

View full text Add to dashboard Cite

The effect of a protecting dielectric superstrate on the resonance of a high T c superconducting microstrip patch is investigated. The analysis approach is based on the spectraldomain method of moments in conjunction with the complex resistive boundary condition. The complex surface impedance of the superconducting thin film is determined using London's equation and the two-fluid model of Gorter and Casimir. Numerical results show that the resonant frequency of the high T c superconducting rectangular patch decreases monotonically with increasing superstrate thickness, the decrease being greater for high permittivity loading.

show abstract

Sequentially Evaporated Thin Film YBa2Cu3O7−x Superconducting Microwave Ring Resonator

Rohrer

Valco

et al. 1990

Science and Technology of Thin Film Superconductors 2

View full text Add to dashboard Cite

Microstrip ring resonator technique for measuring microwave attenuation in high-T/sub c/ superconducting thin films

Cited by 28 publications

References 9 publications

Measurement of Electrical Properties of Superconducting YBCO Thin Films in the VHF Range

Measurement of Electrical Properties of Superconducting YBCO Thin Films in the VHF Range

Resonance of High Tc Superconducting Microstrip Patch in a Substrate-Superstrate Configuration

Sequentially Evaporated Thin Film YBa2Cu3O7−x Superconducting Microwave Ring Resonator

Contact Info

Product

Resources

About