The Characteristics of Chip-to-Chip Signal Propagation in a Package Suitable for Superconducting Circuits

We have measured the electrical characteristics of chip-to-chip-carrier connectors ideally suited to high-performance Josephson LSI circuits. Self- and mutual inductances between connectors were measured by incorporating the connectors in a dc SQUID (Superconducting Quantum Interference Device) and confirmed by detailed signal delay and crosstalk measurements made with Josephson logic circuits.