SMA, SMB and QMA Connectors

摘要

Keith Rawlings introduces some lesser-known types of aerial connectors and compares the construction and efficiency of the Yagi-Uda Array to that of the Log-Periodic Dipole type of aerial. This month I will cover some of the smaller types found fitted on (or in) some equipment. Let us begin with the SMA type (Fig. 1). 'SMA' stands for 'Sub-Miniature version A. These are useful little connectors offering good overall performance and an excellent working range of DC to 18GHz, with some working to 26GHz.