Current-phase relations and noise in rf biased SQUIDS

Conference · Sat Mar 01 04:00:00 EDT 1975 · IEEE Trans. Magn., v. MAG-11, no. 2, pp. 732-735

OSTI ID:4127561

Jackel, L D; Clark, T D; Buhrman, R A

An investigation was made of the effect of the weak link current-phase relation on noise in rf biased SQUIDs. Non-sinusoidal current-phase relations were observed in various weak links, and these non-sinusoidal relations were correlated with significantly increased intrinsic noise in the SQUID ring. The current-phase relation was also found to affect the amplitude of the rf SQUID ring dissipation. The result of an rf SQUID system noise analysis shows that, due to increased intrinsic noise and reduced ring dissipation, the minimum attainable noise for a SQUID ring having a very non-sinusoidal current-phase relation is considerably greater than for a ring with a sinusoidal relation. (auth)

• Research Organization: Cornell Univ., Ithaca, NY
• NSA Number: NSA-33-017089
• OSTI ID: 4127561
• Conference Information: Journal Name: IEEE Trans. Magn., v. MAG-11, no. 2, pp. 732-735
• Country of Publication: United States
• Language: English

Related Subjects

*SQUID DEVICES-- NOISE
420201* --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ENERGY LOSSES
N42220* --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
OPTIMIZATION
RF SYSTEMS
SENSITIVITY