Ideal for test and system applications, a family of coaxial-to-waveguide adapters can be supplied with rectangular waveguide through WR28 for use through 40 GHz. The adapters are available as Option A units with consistent performance over the full operating bandwidth. They also are available as Option B units, which are optimized for a specific segment of the bandwidth. As one of the Option A selections, an adapter with WR229 waveguide and Type N or SMA connectors features VSWR of just 1.20:1 from 3.30 to 4.90 GHz. The 50-Ohm component exhibits insertion loss of 0.05 dB. At higher frequencies, an adapter with WR28 waveguide and 2.9-mm coaxial connectors spans 26.5 to 40.0 GHz while suffering only 0.15-dB insertion loss and 1.40:1 VSWR. Option B choices include an adapter with WR112 waveguide and Type N or SMA connectors with a mere 0.07-dB insertion loss over a 1.47-GHz band centered from 7.05 to 10.00 GHz.
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.