A double-ridge waveguide (DRWG) broadwall directional coupler is a high-performance, broadband component used to sample or monitor RF power in systems operating from 1 GHz to 40 GHz. It’s especially valued in power monitoring, reflectometry, and calibration setups due to its excellent directivity and coupling flatness. Key Features: - Coupling Mechanism: Uses a multi-hole array along the broad wall of the waveguide to couple energy into a secondary waveguide or coaxial port. - Coupling Values: Standard options include 10, 20, 30, 40, and 50 dB, with custom values available. - Directivity: Up to 38 dB, enabling precise VSWR and reflection measurements. - VSWR: Mainline ≤ 1.06, Coupled port ≤ 1.35 (coaxial) or ≤ 1.2 (waveguide). - Power Handling: Suitable for both CW and pulsed high-power applications. - Construction: Typically machined from aluminum or brass with chromate conversion coating (MIL-C-5541) and rugged dip-brazed assembly for durability.