A coplanar transmission line high-Tc superconductive oscillator at 6.5 GHz on a single substrate

The design and construction of a planar, low-noise cryogenic oscillator operating at 6.5 GHz are presented. The oscillator has been built as a hybrid superconductive microwave integrated circuit (SMIC) on a single 10×10 mm LaAlO3 substrate. Single-sided, coplanar line structures are used throughout the circuit with YBa2 Cu3O7-δ as conductor material. The oscillator was constructed around a GaAs MESFET as the active device. The complete oscillator is cooled by immersion in liquid nitrogen. An output power of 4.9 dBm was obtained. Single-sided noise power at 10 kHz offset from carrier was -90 dBc/Hz     «

The design and construction of a planar, low-noise cryogenic oscillator operating at 6.5 GHz are presented. The oscillator has been built as a hybrid superconductive microwave integrated circuit (SMIC) on a single 10×10 mm LaAlO3 substrate. Single-sided, coplanar line structures are used throughout the circuit with YBa2 Cu3O7-δ as conductor material. The oscillator was constructed around a GaAs MESFET as the active device. The complete oscillator is cooled by immersion in liquid nitrogen. An out...     »