An HTS transceiver for third generation mobile communications

Greed, R.B.; Voyce, D.C.; Jedamzik, D.; Hong, Jia-Sheng; Lancaster, M.J.; Reppel, Michael; Chaloupka, H.; Mage, J.C.; Marcilhac, B.; Mistry, R.; Hafner, H.U.; Auger, G.; Rebernak, William

doi:10.1109/77.783905

Cited by 25 publications

(8 citation statements)

References 3 publications

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“…Much attention has been paid to passive microwave devices, including delay lines, multiplexers, resonators and filters for mobile, cellular and satellite communications [6][7][8][9]. However, despite their expected excellent performance, a number of specific problems (of both fundamental and technological origin) remain unsolved for superconducting (SC) structures at radio frequencies (rf).…”

Section: Introductionmentioning

confidence: 99%

Microwave Current Imaging in Passive HTS Components by Low-Temperature Laser Scanning Microscopy (LTLSM)

2006

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distributed parameters in SC films as a function of the local critical current [27]. It is possible to manifest local resistive characterization of the SC transition [28][29][30], the spatial variations of magnetic and electromagnetic fields [31][32][33][34], and to carry out 2-D defectoscopy of structural and technological faults in operating SC devices and circuits [35][36][37]. In this work, we apply the LTLSM technique to analyze the redistribution of rf current flow in the vicinity of typical microdefects in YBCO films leading to anomalously high rf photoresponse, and possibly to nonlinear microwave behavior of SC devices. We have used the LTLSM technique for a spatially resolved investigation of the microwave transport properties, nonlinearities and material inhomogeneities in an operating coplanar waveguide YBa2Cu3O7-d (YBCO) microwave resonator on an LaAlO3 (LAO) substrate. The influence of twin-domain blocks, inplane rotated grains, and micro-cracks in the YBCO film on the nonuniform rf current distribution were measured with a micrometer-scale spatial resolution. The impact of the peaked edge currents and rf field penetration into weak links on the linear device performance were studied as well. The LTLSM capabilities and its future potential for non-destructive characterization of the microwave properties of superconducting circuits are discussed

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Section: Introductionmentioning

confidence: 99%

Microwave Current Imaging in Passive HTS Components by Low-Temperature Laser Scanning Microscopy (LTLSM)

2006

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“…Therefore, several schemes of implementation have already been investigated. Some of them exploit the semiconductor optical amplifiers (SOA) gain saturation as the logic NOR gate demonstrated in [1] and in [2,3] as the logic OR gate with one SOA. Others methods employ the interferometric configuration as the integrated SOA-based interferometric wavelength converters used to fulfil in [4] the 20Gbit/s logic XOR and in [5] the 10 Gbit/s OR functions.…”

Section: Resultsmentioning

confidence: 99%

“…HTS filters with high selectivity have been developed and used in mobile communications [1][2][3][4]. Low insertion loss and high out of band rejection are the prominent character of HTS filters.…”

Section: Introductionmentioning

confidence: 99%

Mechanism study of mechanical tuning in HTS filter application

Peng

Zhang

Guo

et al. 2007

Micro & Optical Tech Letters

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Mechanical tuning method using sapphire and copper rods for high temperature superconducting filters is presented. A three‐pole microstrip filter and a two‐pole patch filter were fabricated and tuned. Results show that the center frequency shifts toward lower end in dielectric tuning and toward either lower end or higher end in metallic tuning depending on the local electromagnetic field distribution.© 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1565–1568, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22561

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“…Indeed, because of their low insertion loss, high miniaturization, and high gain due to their lower surface resistance, high-T c super-conductors are doping the development of small satellite systems [27]. In recent years, high-T c superconductorbased filters and subsystems have been considered for mobile communication, satellite, and radio astronomy applications due to their improved sensitivity [28][29][30][31][32][33].…”

Section: A Hts Circuitsmentioning

confidence: 99%

Efficient characterization of EMC shielding in anisotropic high-Tc superconducting devices for industrial applications

Tounsi

Yagoub

2011

Int J RF and Microwave Comp Aid Eng

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In this article, an efficient full-wave-mode algorithm has been developed to efficiently address industrial needs for rigorous characterization of electromagnetic compatibility shielding effects in anisotropic high-temperature superconducting microwave devices on lossy anisotropic dielectric substrates in multilayer configuration. Finite thickness and conductivity as well as anisotropy of the superconducting films have been investigated. The proposed formulation uses the spectral domain dyadic Green's functions for stratified media.

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An HTS transceiver for third generation mobile communications

Cited by 25 publications

References 3 publications

Microwave Current Imaging in Passive HTS Components by Low-Temperature Laser Scanning Microscopy (LTLSM)

Microwave Current Imaging in Passive HTS Components by Low-Temperature Laser Scanning Microscopy (LTLSM)

Mechanism study of mechanical tuning in HTS filter application

Efficient characterization of EMC shielding in anisotropic high-Tc superconducting devices for industrial applications

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