High-Power Sampling Water Load HY-W22FAQ
| Brand | Huiyan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | HY-W22FAQ |
| Quotation | Available Upon Request |
| Microwave Frequency | 2.45 GHz |
| Waveguide Interface | BJ-26 / BJ-22 |
| VSWR | ≤1.05 |
| Detection Port | N-Type / L16 |
Overview
The Huiyan HY-W22FAQ is a high-power, liquid-cooled sampling water load engineered for precise RF power dissipation and real-time forward/reflected power monitoring in microwave test systems operating at the industrial, scientific, and medical (ISM) band of 2.45 GHz. Unlike broadband resistive terminations or air-cooled dummy loads, this device utilizes deionized water as the dielectric and thermal medium within a precisely dimensioned coaxial-to-waveguide transition cavity. Its operation relies on controlled electromagnetic energy absorption via dielectric loss in circulating, temperature-stabilized water—enabling stable, repeatable impedance matching and minimal signal reflection. Designed for integration into RF source characterization benches, magnetron aging test stations, and plasma generator validation setups, the HY-W22FAQ delivers high average power handling capacity with low VSWR performance under continuous duty cycles, supporting traceable power calibration workflows compliant with IEC 61337 and MIL-STD-461G RF emission test requirements.
Key Features
- Optimized waveguide interface compatibility with standard rectangular waveguides BJ-22 and BJ-26, enabling direct coupling to klystrons, solid-state amplifiers, and industrial microwave generators
- VSWR ≤1.05 across full operational bandwidth (2.42–2.48 GHz), verified per IEEE Std 149-2021 free-space and waveguide measurement protocols
- Dual detection port configuration: female N-type connector (50 Ω, DC–11 GHz) and L16 flange (50 Ω, DC–26.5 GHz) for simultaneous insertion of directional couplers or power sensors
- Integrated flow-through water channel with pressure-rated stainless-steel housing, compatible with closed-loop chilled water systems (recommended inlet temp: 15–25 °C, flow rate ≥4 L/min)
- Thermally stable ceramic-loaded PTFE dielectric spacer ensures long-term impedance consistency and minimizes thermal drift during extended operation
- RoHS-compliant construction; no internal ferrites or active electronics—ensuring passive linearity and immunity to harmonic distortion or intermodulation effects
Sample Compatibility & Compliance
The HY-W22FAQ is intended for use with continuous-wave (CW) and pulsed RF sources delivering up to 22 kW average power (derated per coolant flow and ambient temperature). It supports both single-tone and modulated signals without degradation in VSWR or thermal response time. The unit complies with CE marking requirements for EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. Its mechanical interface adheres to IEC 60154-2 (flange dimensions) and MIL-DTL-3922/67 (BJ-series waveguide tolerances). For laboratory accreditation under ISO/IEC 17025, the load may be included in uncertainty budgets when paired with NIST-traceable power sensors and calibrated directional couplers.
Software & Data Management
As a fully passive hardware component, the HY-W22FAQ does not incorporate embedded firmware or digital interfaces. However, it is routinely deployed in automated test environments using industry-standard instrumentation control frameworks—including SCPI-command-driven power meters (Keysight E4418B, Rohde & Schwarz NRP-Z series) and LabVIEW-based data acquisition systems. When integrated with compliant directional couplers and calibrated sensors, measurement data—including forward power, reflected power, and calculated return loss—can be logged with audit-trail timestamps, supporting GLP/GMP documentation requirements per FDA 21 CFR Part 11 when configured with appropriate electronic record controls.
Applications
- RF source stability evaluation in microwave oven magnetron qualification testing
- Power amplifier linearity verification in ISM-band communication transmitters
- Calibration reference for transfer standards in national metrology institutes
- Reflected power monitoring during plasma ignition and maintenance in semiconductor etch chambers
- EMI pre-compliance testing of high-power RF subsystems prior to anechoic chamber validation
- Thermal management validation for liquid-cooled RF front-end modules in radar systems
FAQ
What is the maximum average power rating for the HY-W22FAQ model?
The HY-W22FAQ is rated for 22 kW average power under nominal cooling conditions (water inlet temperature ≤25 °C, flow rate ≥4 L/min, ambient temperature ≤35 °C). Derating curves are provided in the technical datasheet for non-standard thermal environments.
Can this load be used at frequencies other than 2.45 GHz?
It is optimized and characterized exclusively for the 2.42–2.48 GHz ISM band. Operation outside this range results in increased VSWR and reduced power-handling margin due to resonant cavity detuning.
Is deionized water mandatory for operation?
Yes. Conductivity must remain below 1 µS/cm to prevent arcing, minimize dielectric loss variability, and ensure long-term corrosion resistance of internal wetted surfaces.
Does the unit include flow monitoring or temperature interlocks?
No—these are external system responsibilities. Users must integrate independent flow switches and PT100 temperature sensors into their cooling loop per IEC 60335-1 safety requirements.
Are calibration certificates available?
NIST-traceable VSWR and impedance verification reports can be issued upon request, aligned with ANSI/NCSL Z540-1 and ISO/IEC 17025:2017 requirements.
