Global Invacom Waveguide (“GIW”) offers a range of directional broad wall, side wall and cross guide couplers in 3 and 4 port configurations. All couplers have been designed to offer low VSWR, flat response and high directivity over the entire designated waveguide band. Improvements in directivity and coupling value tolerances can be made for specified narrow band applications. The CC and DC series of couplers are designed, tested and manufactured to the highest quality standards. Couplers are manufactured with the full range of International Flange Style. All Global Invacom Waveguide couplers are offered with an attractive, hard wearing, epoxy paint finish.