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    High-Performance Waveguide Circulator (18.0–26.5GHz): Providing Reliable Isolation and Signal Control for High-Frequency RF Applications

    In high-frequency RF scenarios such as satellite communication, radar systems, medical equipment and military facilities, unidirectional signal transmission, port isolation and power protection serve as core prerequisites for stable system operation. Tailored for application scenarios within the 18.0–26.5GHz frequency band, this WR42 (BJ220) waveguide circulator features superior RF performance, compact mechanical design and wide temperature adaptability, making it an ideal core component for a wide range of high-frequency systems.

     

    I. Core Application Scenarios: Meeting High-Frequency RF Demands Across Multiple Fields

    • Designed specifically for high-frequency RF systems, this waveguide circulator is widely applicable in the following scenarios:

    • RF Power Amplifier Protection: Prevents damage to core components caused by reflected output signals from the power amplifier through efficient port isolation, ensuring the stability of the transmission chain

    • Digital, Satellite & Mobile Communication: Enables unidirectional signal transmission in high-frequency transceiver systems, avoiding signal crosstalk between transmit and receive ports and enhancing the reliability of communication link.

    • Medical, Communication & Security Equipment: Provide stable signal isolation and path control for high-frequency medical diagnostic devices, security radar and other devices.

    • Military, Aerospace & Commercial High-Frequency Systems: With wide-temperature and high-reliability design, it meets the demands of aerospace, military and commercial high-frequency RF systems operating in harsh environments.

     

    II. Key RF Performance Indicators: Stable Support for High-Frequency Operations

    Product Specifications

    Part Number

    Frequency Range (GHz)

    Isolation Min(dB)

    VSWR Max

    Insertion Loss Max(dB)

    Connector Type

    5o162830018265

    18.0 ~ 26.5

    20

    1.25

    0.3

    WR42(BJ220)

     

    Basic Specifications

    Dimension

    22.4*30*28mm

    Impedance

    50Ω

    Forward Power

    100W

    Operating Temperature

    -40 ~ +85℃

    Reverse Power

    100W

    Storage Temperature

    -55 ~ +125℃

     

    Overall Dimension(mm,Tolerances: ±2% unless otherwise stated.)

    5o1628300.png

    III. Mechanical & Environmental Specifications: Compact Design Suitable for Harsh Operating Conditions


    1. Basic Electrical and Mechanical Parameters  

    • Characteristic impedance is 50Ω, compatible with mainstream RF system impedance standards to avoid additional matching loss.

    • Forward/Reverse Power Capacity: Supports 100W power transmission in both directions, meeting the power requirements of most high-frequency transmission systems.

    • Overall Dimensions: 22.4 × 30 × 28 mm (tolerance ±2%), featuring a compact modular design that allows for easy integration into space-constrained high-frequency equipment;

    • Mounting Design: Features 4 M3.0 mounting holes paired with a standard waveguide flange interface, ensuring convenient installation and secure connections.


    2. Wide Temperature Adaptability

    • The operating temperature ranges from -40℃ to +85℃, adapting to various working environments including low-temperature outdoor conditions and high-temperature equipment cabins.

    • The storage temperature ranges from -55℃ to +125℃ with no performance degradation during long-term storage, ensuring stable supply chain and spare parts management.

     

    IV. Summary


    This 18.0–26.5GHz waveguide circulator perfectly meets diverse requirements of Ka-band high-frequency RF systems through outstanding RF performance, compact mechanical structure and strong environmental adaptability. It delivers stable signal isolation, unidirectional transmission and power protection for satellite communication, military equipment, medical facilities and commercial high-frequency devices. As a cost-effective and highly reliable core component, it is an optimal choice for high-frequency RF link construction.