HY-JL22FA 3 kW Magnetron Excitation Cavity
| Brand | Huiyan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | HY-JL22FA |
| Quotation | Upon Request |
| Cavity Material | Oxygen-Free Copper or 6061-T6 Aluminum |
| Waveguide Interface | Standard BJ-22 (WR-284, 72.14 mm × 34.04 mm) |
| Rated Power Handling | 3 kW CW (with 2 kW / 3 kW Magnetron Compatibility) |
| Operating Frequency Range | 2.45 GHz ± 15 MHz |
| Cooling | Forced Air or Water-Cooled Mounting Base (Optional) |
Overview
The HY-JL22FA 3 kW Magnetron Excitation Cavity is a precision-engineered RF cavity designed for stable, high-efficiency coupling of industrial-grade magnetrons operating at the ISM band frequency of 2.45 GHz. Based on fundamental microwave cavity resonance principles—specifically TE10-mode excitation within a rectangular waveguide-fed resonant structure—the cavity functions as an impedance-matching and field-confinement interface between the magnetron anode output and downstream microwave transmission systems. Its primary role is to ensure minimal reflected power (94% under matched load conditions), and maintain thermal and mechanical stability during continuous-wave (CW) operation up to 3 kW. The cavity is not a standalone source but a critical subsystem in microwave heating, plasma generation, material processing, and scientific plasma research setups where precise magnetron integration is required.
Key Features
- Optimized resonant geometry calibrated for 2.45 GHz operation, with built-in tuning capability via adjustable short-circuit plunger or capacitive iris for fine VSWR compensation
- Two standard material variants: high-conductivity oxygen-free copper (OFHC) for maximum Q-factor and thermal conductivity, or aerospace-grade 6061-T6 aluminum for weight-sensitive and cost-optimized installations
- Standardized BJ-22 (WR-284) waveguide flange interface compliant with IEC 60154-2 and MIL-DTL-3922/67B specifications, enabling direct integration with commercial magnetron assemblies and circulator/isolator modules
- Modular mounting design accommodating both vertical and horizontal magnetron orientation; includes threaded coolant port locations (M10×1) for optional water-cooled base plate integration
- Surface finish: Electrolytic silver plating (copper variant) or hard-anodized Class II coating (aluminum variant) to minimize surface resistive loss and oxidation-induced degradation
Sample Compatibility & Compliance
The HY-JL22FA cavity supports magnetrons rated for 2 kW and 3 kW CW output, including common industrial models such as the Toshiba TM-245A, Litton 2M233, and Comdel M3000 series. It is compatible with standard magnetron filament supply configurations (typically 3.3 V AC @ 10–15 A) and integrates seamlessly into systems requiring IEEE 1547-compliant RF safety interlocks. While the cavity itself is not a certified end-device, its mechanical and electromagnetic design adheres to key sections of IEC 61000-4-3 (radiated immunity) and IEC 62233 (microwave oven emission limits) when installed per manufacturer-specified grounding and shielding protocols. For GMP-regulated thermal processing applications, cavity traceability documentation—including material certifications (ASTM B115 for OFHC copper, ASTM B209 for 6061-T6 Al) and dimensional inspection reports—is available upon order.
Software & Data Management
As a passive RF component, the HY-JL22FA does not incorporate embedded firmware or digital control interfaces. However, it is routinely deployed in systems utilizing real-time RF monitoring architectures. When integrated with directional couplers, power sensors (e.g., Keysight U2000 series), and PLC-based controllers, cavity performance metrics—including forward/reflected power ratio, temperature rise at mounting flanges (via PT100 sensors), and cumulative operational hours—can be logged in accordance with FDA 21 CFR Part 11 requirements using validated SCADA platforms such as Siemens Desigo CC or Ignition SCADA. Calibration certificates for associated power measurement chains are traceable to NIM (National Institute of Metrology, China) standards.
Applications
- Industrial microwave drying and vulcanization lines for rubber, ceramics, and composites
- Atmospheric-pressure plasma torch systems for surface activation and thin-film deposition
- Scientific microwave plasma reactors used in spectroscopic diagnostics and radical yield studies
- Custom-built electron cyclotron resonance (ECR) sources for ion beam generation
- Test-bench integration for magnetron aging and load-pull characterization under controlled thermal boundary conditions
FAQ
Is the HY-JL22FA cavity suitable for pulsed magnetron operation?
Yes—its structural integrity and thermal mass support duty cycles up to 20% at 3 kW peak power, provided pulse width remains ≤ 500 µs and repetition rate ≤ 1 kHz. Thermal derating curves are supplied upon request.
Can the cavity be modified for 915 MHz operation?
No—geometry is fixed for 2.45 GHz resonance. A dedicated cavity (e.g., HY-JL18FA with BJ-18 interface) is required for 915 MHz systems.
Does the unit include a built-in isolator or circulator?
No—these are separate components. The cavity is designed for integration upstream of external ferrite-based isolators compliant with MIL-STD-202G Method 302.
What documentation is provided with shipment?
Mechanical drawings (PDF + STEP), material compliance statements, waveguide flange torque specifications, and installation alignment guidelines—all in English.
