Low-Power Waveguide Loads & Terminations (0.3W – 1W) — WR90 to WR2.2
Introduction
When accuracy and low reflection are paramount in low-power test and measurement setups, our series of low-power waveguide loads (dummy loads) delivers unmatched reliability. Engineered specifically for low-wattage applications—including local oscillator (LO) output protection, mixer port termination, and precision VNA calibration—these loads absorb incident microwave and millimeter-wave energy with minimal signal reflection.
Spanning an extensive frequency range from 8.2 GHz up to over 500 GHz, our catalog covers rectangular waveguide sizes from standard WR-90 down to sub-terahertz WR-2.2 bands. Available in 0.3W, 0.5W, and 1W power handling tiers, these compact components provide the ideal balance of precision electrical performance and minimal footprint.
Power Ratings & Thermal Specifications
- 0.3W Wattage Tier: Optimized for ultra-compact, high-frequency mmWave and terahertz bands (such as WR-10 down to WR-2.2) where low thermal dissipation is required.
- 0.5W Wattage Tier: Balanced performance for mid-to-high frequency test benches, sensor front-ends, and laboratory instrumentation.
- 1.0W Wattage Tier: Robust low-power standard suitable for standard microwave and lower mmWave bands (WR-90 through WR-15) requiring stable handling of standard test signals.
Comprehensive Waveguide Size & Band Spectrum
Our low-power waveguide loads are engineered to precise mechanical tolerances across a massive EIA (WR) standard size spectrum:
- Microwave & Ku Bands: WR-90 (8.2–12.4 GHz), WR-75 (10.0–15.0 GHz), WR-62 (12.4–18.0 GHz)
- K & Ka Bands: WR-42 (18.0–26.5 GHz), WR-28 (26.5–40.0 GHz)
- Millimeter-Wave Bands (Q, V, E, W): WR-22 (33–50 GHz), WR-19 (50–75 GHz), WR-15 (50–75 GHz), WR-12 (60–90 GHz), WR-10 (75–110 GHz)
- Sub-mmWave & Terahertz Bands: WR-8 (90–140 GHz), WR-6 (110–170 GHz), WR-5 (140–220 GHz), WR-4 (220–330 GHz), WR-3 (260–400 GHz), WR-2.8 (325–500 GHz), WR-2.2 (330–500+ GHz)
Key Performance Advantages
- Exceptional VSWR Performance: Carefully optimized internal lossy elements ensure minimal reflection across the full operational bandwidth.
- Compact & Lightweight Design: Designed with minimal physical volume to integrate seamlessly into crowded test benches, waveguide manifolds, and compact ATE systems.
- High-Precision Manufacturing: CNC-machined from high-grade Aluminum alloys, Oxygen-Free Copper (OFC), or Brass to guarantee flawless mechanical alignment and mode purity.
- Advanced Plating & Finishing: Finished with high-conductivity gold or silver plating (for sub-mmWave bands) or protective chromate conversion to prevent oxidation and insertion loss.
- Standard Flange Compatibility: Equipped with industry-standard UG-cover/choke flanges, CPR, or CMR flanges for effortless integration into existing waveguide assemblies.
