Knowles = Turnkey SMD directional couplers for high-frequency power monitoring

A new series of directional couplers from Knowles DLI provides is testament to how high-permittivity, temperature-stable materials can reduce size and weight providing high performance repeatability. The small-size directional couplers are manufactured using proprietary precision thin-film technology and offer an attractive option for microwave systems in commercial, defence and space applications. Designed for a 50ohm characteristic impedance, they offer a turnkey surface-mount solution for high-frequency power monitoring. The four port couplers are excellent for high-frequency signal monitoring applications where board space is a premium and quality power detection or injection is required. COTS devices covering C, X and Ku bands offer quick turn solutions in a solder surface mount-package with flexible PCB feed line configuration. Both 10dB and 20dB coupling values are available within each frequency band both with a common footprint for maximum flexibility. The devices are designed to provide high directivity, excellent repeatability and stable frequency over the temperature range -55C to +125C. Chip and wire mount devices with the same performance are also available and custom solutions are available to suit individual size and performance parameters, says the company.