ИСТИНА

Development of broadband superconductor sensors / amplifiers capable of providing high Spurious-Free Dynamic Range (SFDR) is now extremely topical, especially in the view of development of broadband receiving systems with direct digitizing. Such high-performance receivers become quite real with the state-of-the-art progress in superconductor Analog-to-Digital Converters (ADC). This presentation is to observe our theoretical and experimental studies of Superconducting Quantum Arrays (SQA) suggested for development of the broadband sensors / amplifiers realizing high SFDR. Integrating SQA with a broadband input microwave line or with a superconducting flux concentrator to apply an input magnetic signal to all array cells, one can design a broadband high-performance amplifier or active electrically small antenna of a transformer type. Moreover, SQA in the form of 2D array of superconducting quantum cells with nonsuperconducting electric connection of the cells can be used directly as an active ESA of a transformer-free type.