Sökning: "Nb PbBi junction"
Hittade 5 avhandlingar innehållade orden Nb PbBi junction.
1. Lumped arrays of Josephson junction oscillators
Sammanfattning : .... LÄS MER
2. Antenna Integrated Superconducting Mixers
Sammanfattning : This thesis investigates the prospects of some different superconducting mixers integrated with planar antennas for the millimeter and submillimeter regime. Two kinds of Superconductor/Insulator/Superconductor (SIS) tunnel junctions for use in mixers have been fabricated; Nb/PbBi edge junctions and Nb trilayer junctions. LÄS MER
3. Theoretical and experimental studies of the flux-flow type Josephson oscillator
Sammanfattning : .... LÄS MER
4. Josephson Junctions: Oscillators and Broadband Spectrometers at Frequencies up to 1 THz
Sammanfattning : This thesis is devoted to some selected applications of the Josephson junction oscillator. The initial work was performed using low-Tc Nb/PbBi tunnel junctions, while the later parts were done using the recently developed high-Tc YBa2Cu3O7 (YBCO) Josephson junctions. LÄS MER
5. Dynamics and Applications of Long Josephson Junctions
Sammanfattning : The first object of this work is to theoretically study the effects of tunnel junction parameters on flux-flow Josephson oscillators (FFOs) by numerical simulation and to experimentally study the rf properties of FFOs by integrating them together with an SIS (superconductor-insulator-superconductor) mixer/detector on a chip. By using a CAD modeled integrated sub-mm wave receiver, the composite linewidth of two FFOs was measured to be less than 2. LÄS MER