7.05-10GHz WR-112 WAVEGUIDE ATTENUATOR

• Rugged and precision‑machined waveguide construction
• Compact integration with waveguide systems
• Fixed or variable versions for different needs

Working Principle of a WAVEGUIDE ATTENUATOR

A WAVEGUIDE ATTENUATOR is a passive microwave component that reduces the amplitude of a signal propagating through a waveguide transmission line.
A WAVEGUIDE ATTENUATOR achieves this reduction by introducing controlled loss into the signal path, without causing significant reflection.
A WAVEGUIDE ATTENUATOR can be designed using three primary mechanisms: resistive film/insertion, absorption by lossy dielectric materials, or mechanical vane/rotary structures.
A WAVEGUIDE ATTENUATOR based on the resistive vane type uses a thin resistive card placed along the E‑plane of the waveguide—the card intersects the electric field lines and dissipates microwave energy as heat.
A WAVEGUIDE ATTENUATOR of the rotary vane type consists of three sections: an input fixed resistive vane, a rotatable resistive vane, and an output fixed resistive vane—rotating the middle vane changes the attenuation level continuously.

A WAVEGUIDE ATTENUATOR with absorptive (coaxial‑to‑waveguide) design uses lossy ferrite or dielectric materials that absorb electromagnetic energy.
A WAVEGUIDE ATTENUATOR maintains a good impedance match (low VSWR) across its operating frequency band, ensuring minimal reflection.
A WAVEGUIDE ATTENUATOR attenuates signals by converting part of the electromagnetic energy into heat, which is dissipated through the waveguide body and heat sinks.
A WAVEGUIDE ATTENUATOR can be fixed (providing a constant attenuation value, e.g., 3 dB, 6 dB, 10 dB, 20 dB) or variable (adjustable over a range, e.g., 0–30 dB or 0–60 dB).