Delft Circuits
Microwave Drive Lines
Microwave Drive Lines are high-performance cryogenic microwave cabling solutions engineered to deliver low-noise control signals to superconducting qubits and other cryogenic devices. Designed to maintain signal integrity up to 8 GHz while minimizing both active and passive thermal load, these lines provide reliable microwave delivery in dilution refrigerator environments where precision and stability are critical.
Integrated features such as on-flex attenuation, filtering, and low thermal load make Microwave Drive Lines a strong alternative to traditional coaxial wiring solutions, offering enhanced scalability, lower noise, and simplified integration in modern quantum systems.
Key Applications
- Microwave drive for superconducting qubit control
- Microwavedrive for semiconductor spin qubit
- Controlline for compact cryostat
Key Features
- Wide frequency band: DC to 18 GHz with 50 Ω impedence
- High density solution: 8 channel per flex
- Low loss: 3 dB/m for silver flex at 6 GHz at 4K
- Low crosstalk: equal level far end crosstalk of -50 dB at 6 GHz
- Cryogenic performance: thermalize time constant of 0.28 ms, twice as fast as coaxial setup
- Specialized package: comes with integrated filters design for microwave drive
- Flexibility: Cri/oFlex design with high flexibility
- Scalability: comes in compact kit KF25 with 8 channels and up to 256 channels in 108 mm port assembly
Technical Highlights
- Flex material strip line design with high flexibility and high-density channels
- Superconducting NbTi platform for low loss transmission
- Filtering integrated into the flex to reduce mechanical strain
- Thermalization by clamping with increases surface area
Configuration options
- Integrated filtering elements:Attenuators, low pass filters, infrared filters
- Comparable with a wide range ofcryostats, including Bluefors, Maybell, FormFactor, Oxford Instruments, LeidenCryogenics and Kiutra
- Comes in many packages forscalability:
- KF25: 8 to 16 channels with SMAand SMP connectors
- KF40: 8 to 32 channels with SMA and SMP connectors, 32 to 64 channels with HD SMP and HD SMPM port
- ISO-K63: 32 to 96 channels withHD SMP and HD SMPM port
- Ø 108 mm port: 32 to 256 channels with HD SMP and HD SMPM port
Discover Cri/oFlex lines yourself
Ready to experience the performance of Microwave Drive Lines? Request a live demonstration, download detailed datasheets, or contact our team to discuss a customized configuration for your system. Delft Circuits is here to help you achieve exceptional results with precision cryogenic connectivity.
