Evaluating Radio Frequency Signal Attenuation Shifts Induced by Contact Oxide Accumulation
Contact oxide growth adds up to 3 dB insertion loss in RF interconnects, degrading link margin and driving retransmissions unless wiping force exceeds 0.3 N.
Pogo Pins
Meaning
Spring loaded contact probes used to establish a temporary electrical connection between two points. These pogo pins consist of a plunger and a spring housed inside a cylindrical barrel. They are primarily used in test fixtures and docking stations because they can accommodate height variations and provide a reliable interface over thousands of cycles.
Internal Action
Springs provide a consistent downward force to ensure the plunger maintains contact with the target pad. Because pogo pins are compliant they compensate for tolerances in the mechanical assembly or slight warpage of the printed circuit board. This flexibility prevents damage to sensitive components while maintaining a low resistance path.
Radio Integrity
High frequency performance depends on the material and the design of the internal spring. In some high speed applications the pogo pins are designed with specific impedances to minimize reflections and signal distortion. Engineers select different tip shapes like pointed, serrated, flat or cupped to penetrate through oxides or contaminants on the surface of the device under test.
Interface Selection
Surface mount versions allow these connectors to be placed directly on a circuit board by automated assembly equipment. Using pogo pins in a consumer device enables a sleek charging interface that is easy for the user to align and connect. This durability and ease of use make them a standard choice for wearables and modular electronics.