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  • Cryogenic Low Pass Filters RF Coaxial High Frequency Microwave Millimeter Wave Radio Frequency
  • Cryogenic Low Pass Filters RF Coaxial High Frequency Microwave Millimeter Wave Radio Frequency
  • Cryogenic Low Pass Filters RF Coaxial High Frequency Microwave Millimeter Wave Radio Frequency
  • Cryogenic Low Pass Filters RF Coaxial High Frequency Microwave Millimeter Wave Radio Frequency

    Features:

    • High Stopband Rejection
    • Small Size

    Applications:

    • Telecom
    • Laboratory Test
    • Receivers
    • Instrumentation

    Cryogenic low pass filters

    Cryogenic low pass filters are specialized electronic components designed to operate efficiently in cryogenic environments (typically at liquid helium temperatures, 4K or below). These filters allow low-frequency signals to pass through while attenuating higher-frequencysignals, making them essential in systems where signal integrity and noise reduction are critical. They are widely used in quantum computing, superconducting electronics, radio astronomy, and other advanced scientific and engineering applications.

    Features:

    1. Cryogenic Performance: Designed to operate reliably at extremely low temperatures (e.g., 4K, 1K, or even lower). Materials and components are selected for their thermal stability and lowthermal conductivity to minimize heat load on the cryogenic system.
    2. Low Insertion Loss: Ensures minimal signal attenuation within the passband, which is crucial for maintaining signal integrity in sensitive applications like quantum computing.
    3. High Attenuation in the Stopband: Effectively blocks high-frequency noise and unwanted signals, which is critical for reducing interference in low-temperature systems.
    4. Compact and Lightweight Design: Optimized for integration into cryogenic systems, where spaceand weight are often limited.
    5. Wide Frequency Range: Can be designed to cover a broad range of frequencies, froma fewMHz toseveral GHz, depending on the application.
    6. High Power Handling: Capable of handling significant power levels without performancedegradation, which is important for applications like quantum computing and radio astronomy.
    7. Low Thermal Load: Minimizes heat transfer to the cryogenic environment, ensuring stableoperation of the cooling system.

    Applications:

    1. Quantum Computing: Used in superconducting quantum processors to filter control and readout signals, ensuring clean signal transmission and reducing noise that could decohere qubits. Integratedinto dilution refrigerators to maintain signal purity at millikelvin temperatures.
    2. Radio Astronomy: Employed in cryogenic receivers of radio telescopes to filter out high-frequency noise and improve the sensitivity of astronomical observations. Essential for detecting weak signals from distant celestial objects.
    3. Superconducting Electronics: Used in superconducting circuits and sensors to filter out high-frequency interference, ensuring accurate signal processing and measurement.
    4. Low-Temperature Experiments: Applied in cryogenic research setups, such as studies of superconductivity or quantum phenomena, to maintain signal clarity and reduce noise.
    5. Space and Satellite Communication: Utilized in cryogenic cooling systems of space-basedinstruments to filter signals and improve communication efficiency.
    6. Medical Imaging: Used in advanced imaging systems like MRI (Magnetic Resonance Imaging) that operate at cryogenic temperatures to enhance signal quality.

    Qualwave supplies high stopband rejection cryogenic low pass filters in frequency range DC-8.5GHz. The cryogenic low pass filters are widely used in many applications.

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    Part Number

    Passband

    (GHz, Min.)

    Passband

    (GHz, Max.)

    Insertion Loss

    (dB, Max.)

    VSWR

    (Max.)

    Stopband Attenuation

    (dB)

    Connectors

    QCLF-11-40 DC 0.011 1 1.45 40@0.023~0.2GHz SMA
    QCLF-500-25 DC 0.5 0.5 1.45 25@2.7~15GHz SMA
    QCLF-1000-40 0.05 1 3 1.58 40@2.3~60GHz SSMP
    QCLF-8000-40 0.05 8 2 1.58 40@11~60GHz SSMP
    QCLF-8500-30 DC 8.5 0.5 1.45 30@15~20GHz SMA

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