R&D Microwaves General Purpose Directional Couplers are engineered for reliable RF and microwave signal monitoring, sampling, and power distribution across a wide range of commercial, laboratory, development, and military applications. Operating from 500 MHz to 18 GHz, these high-performance couplers are available in broadband and octave-band configurations with both low and high-power options. Designed with SMA and Type N connectors, they are offered in single and dual coupler designs with 3-port and 4-port configurations to meet diverse system requirements. Manufactured in the USA, these directional couplers feature low insertion loss, excellent directivity, and dependable performance across demanding RF environments. Select models utilize patented airline-suspended tapered conductor technology for exceptionally low loss and wideband operation, while other designs provide cost-effective stripline and microstrip solutions. Custom coupling values, connector options, and modified configurations are also available to support unique application requirements. Ideal for RF testing, signal monitoring, measurement systems, communications infrastructure, and microwave applications, R&D Microwaves directional couplers deliver precision, durability, and flexibility for today’s advanced RF systems.