WR-05 Low Power Termination
The WR-05 Low Power Termination is a precision-engineered waveguide component that provides an exact precision match for terminating unused ports during VNA calibration and testing. It is specifically designed for the 140 - 220 GHz frequency range, serving as a critical building block in G-Band infrastructure.
Low-power terminations prioritize absolute minimum VSWR over heat dissipation, using a highly engineered, delicate absorbing element designed for milliwatt-level measurement accuracy. WR-05 (G-Band, 140-220 GHz) components cross into the Terahertz gap. With an aperture of just 0.051" x 0.0255", these components are primarily used in high-end scientific radiometry and cryogenic test environments.
Key Features
Compact Form Factor
Designed for bench-top and rack-mounted test setups where space and weight are critical considerations.
Precision Matched Load
Engineered for excellent return loss and VSWR performance across the full operating frequency band.
Laboratory Grade
Meets the exacting standards required for network analyzer calibration and precision RF measurements.
Corrosion Resistant
Gold-plated finish provides long-term environmental durability and consistent electrical performance.
G-Band Use Cases
Atmospheric Science
Radiometric Earth observation
THz Imaging
High-res security scanning
Cryogenic Test
Low-heat-load signal routing
Deep Space
Interstellar molecule detection
More Low Power Terminations
Frequently Asked Questions
Can a low power termination be used for calibration?+
Yes. Low power terminations are frequently used as the "Load" standard during a Short-Short-Load-Thru (SSLT) calibration on a Vector Network Analyzer, requiring them to have near-perfect return loss (better than 30 dB).
How does WR-05 perform in cryogenic systems?+
Waveguide carries far less heat down a cold chain than coaxial cable of equivalent bandwidth. WR-05 can route G-band signals into a cryostat while limiting the thermal load reaching the cold stage, which is why thin-wall waveguide runs are common in low-temperature test setups.
Can you use standard flanges on WR-05?+
No. WR-05 exclusively uses precision dowel-pinned flanges (like the UG-387/U-Mod) because human hands cannot reliably align a 1.2mm wide hole visually. The precision steel pins force the microscopic apertures to align perfectly.