I have a length of RG-316 single shield 50Ω coaxial cable carrying a 5.8 GHz signal that I need to connect to a PCB. While cheap relative to most coaxial connectors, SMA connectors are still quite expensive, take up space and are relatively heavy. The PCB was designed for side mount SMA connectors.
- Could I replace the original SMA connectors with direct soldering joints like this, without causing a large impedance mismatch?
How could I improve the RF performance of the connection?
The mechanical strength of the joint is poor, and the teflon insulator does not bond well with common adhesives. Can I protect the joint with nonconductive adhesives (epoxy, hot glue) without significantly affecting its RF performance? What would be the best way to secure it mechanically?