LDC-0.4/20-10S 0.4-20Ghz 10dB directional coupler

The LDC-0.4/20-10S is a broadband directional coupler from LEADER-MW, designed to cover an exceptionally wide frequency range of 0.4 GHz to 20 GHz with a nominal coupling of 10 dB. This ultra-wideband capability makes it a versatile component for modern RF and microwave systems, where a single device can replace multiple narrowband couplers.

As a directional coupler, it samples a defined portion of the forward signal while providing high directivity to isolate forward from reflected power. This makes it well suited for applications such as power monitoring, signal sampling, VSWR measurement, and test instrumentation. The 10 dB coupling value offers a practical balance—strong enough for accurate detection, yet low enough to minimize insertion loss on the main line.

LEADER-MW is known for producing reliable passive microwave components, and the LDC series reflects that focus on consistent performance across the full band. Typical construction uses rugged, temperature-stable materials to maintain coupling flatness and directivity over frequency and environmental conditions.

For engineers designing broadband amplifiers, antenna systems, or lab test setups, the LDC-0.4/20-10S provides a compact, dependable solution. Exact specifications—such as insertion loss, directivity, VSWR, and power handling—should be confirmed against the official datasheet, as values may vary by revision.