Terminology：Coaxial connectors

These are components (input/output) used to connect coaxial lines and equipment.
In order to efficiently transmit RF power, it is important to connect with as little return loss as possible across the entire frequency band.
Therefore, the selection criteria for coaxial connectors are as follows:
·Low return loss at the connection surface
·Mechanically strong and durable for repeated use
·Operating frequency
·Cable (device) dimensions and structure