Microstrip antenna - pcb prototyping connector

Dear All,
Good Morning. I need some suggestion to choose the best connector for Antenna PCB Prototyping. I designed the microstrip antenna for millimeter-wave communication operating @ 28 GHz. Can you suggest the best SMA connector (Maximum Operating Frequency up to 32 GHz) for Antenna Measurement?

Welcome, san1988

Most SMA connectors I have seen operate up to a maximum of 18 GHz. Most likely, you want a different connector.