High-power single- and dual-directional couplers are ideal for sampling forward and reflected power to 8 GHz. These 50-Ohm devices promise to have a negligible effect on signal transmission characteristics and very-low-intermodulation products. Model CHP-1040, for example, covers 1 to 4 GHz. It exhibits insertion loss of 0.15 dB or less with primary port VSWR of 1.20:1 or less and secondary port VSWR of 1.30:1 or less. This coupler boasts at least 23 dB directivity. Its sibling, the model CHP-2080, covers 2 to 8 GHz while providing a minimum of 21 dB directivity. This unit exhibits insertion loss of 0.20 dB or less with primary port VSWR of 1.25:1 or less and secondary port VSWR of 1.30:1 or less. The third member of the family, model CHP-3012, covers 3 to 12 GHz. It exhibits insertion loss of 0.25 dB or less with primary and secondary port VSWR of 1.30:1 or less. Directivity for this unit is at least 18 dB. The standard units are optimized for two-octave bandwidths and are available with 30-, 40-, or 50-dB nominal coupling.
About the Author
Nancy Friedrich
RF Product Marketing Manager for Aerospace Defense, Keysight Technologies
Nancy Friedrich is RF Product Marketing Manager for Aerospace Defense at Keysight Technologies. Nancy Friedrich started a career in engineering media about two decades ago with a stint editing copy and writing news for Electronic Design. A few years later, she began writing full time as technology editor at Wireless Systems Design. In 2005, Nancy was named editor-in-chief of Microwaves & RF, a position she held (along with other positions as group content head) until 2018. Nancy then moved to a position at UBM, where she was editor-in-chief of Design News and content director for tradeshows including DesignCon, ESC, and the Smart Manufacturing shows.