Low Noise Factory (LNF), a leading manufacturer specializing in ultra-low-noise components, has introduced the LNF-XXXXC4_12B — a cryogenic isolator / circulator for high-precision applications operating across the 4–12 GHz frequency range. It delivers ultra-low insertion loss (0.3–0.5 dB typical at 5 K) and 30 dB isolation, ideal for quantum computing, superconducting device testing, and low-temperature physics research where minimal thermal noise is essential.
The cryogenic Isolator / Circulator has a gold-plated OFHC copper body for enhanced thermal conductivity, so that any dissipated losses are efficiently conducted away to cryogenic temperatures. This isolator/circulator is packaged in a slim coaxial module with 2.92 mm (SMA-compatible) female connectors and measures 32 × 21.46 × 10.16 mm (excluding connectors).
Key Specifications
- Frequency Range: 4–12 GHz, suitable for C- and X-band cryogenic systems
- Insertion Loss: 0.3–0.5 dB typical at 5 K for low-noise signal transfer
- Isolation: 30 dB typical, ensuring clean port separation
- Port Match: 15 dB typical for excellent impedance balance
- Connectors: 2.92 mm female (SMA-compatible)
- Operating Temperature: 0.01 K – 100 K
- Magnetic Field Tolerance: Up to 1500 Gauss (parallel) without performance degradation
- Form Factor: Compact 32 × 21.46 × 10.16 mm housing
The LNF-XXXXC4_12B is available in double-junction configurations, including Isolator-Isolator, Isolator-Circulator, Circulator-Isolator, and Circulator-Circulator, providing integration flexibility for advanced cryogenic measurement systems.
