Waveguide Stub Tuner up to 40 GHz

Waveguide Stub Tuner up to 40 GHz are precision impedance matching components for waveguide applications in the microwave range. These mechanically adjustable tuners enable optimal matching of characteristic impedance discontinuities through controlled variation of stub position and penetration depth. The robust construction ensures reproducible settings and high power handling capability.

Key Features

• Frequency range up to 40 GHz, compatible with standard waveguide formats (WR-28, WR-22, WR-19)
• Triple-stub or single-stub configuration for broadband or narrowband matching
• Precision micrometer screws with scale for reproducible settings
• Low insertion loss through direct waveguide coupling without dielectric losses
• High power handling up to several kilowatts CW power (depending on waveguide format)
• Flange design according to EIA, UG, or custom specifications

Applications

• Impedance matching in test and measurement systems
• Tuning of power amplifiers and transmitter output stages
• Optimization of antenna feed systems
• Calibration and characterization of RF components
• Research and development in radar and satellite communication
• Plasma excitation and industrial RF heating

Precise Mechanical Adjustment for Optimal Matching

The mechanical adjustment of the stubs is performed using calibrated micrometer screws that enable precise positioning in the sub-millimeter range. In triple-stub tuners, the defined spacing between individual stubs allows broadband matching over several gigahertz. The robust metal construction guarantees thermal stability and long-term reproducibility of settings even under changing environmental conditions.

bq-microwave Custom Solutions

We manufacture waveguide stub tuners according to your specific requirements – with custom waveguide formats, adapted flange types, or integrated power measurement components. Whether vacuum-compatible designs for high-power applications or compact designs for space-constrained systems – our engineering department realizes your specification. Benefit from over 20 years of experience in waveguide technology and contact us for your project.