SMA connector
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SMA (SubMiniature version A) connectors are coaxial RF connectors developed in the 1960's as a minimal connector interface for coaxial cable with a screw type coupling mechanism. The connector has a 50 Ω impedance. It offers excellent electrical performance from DC to 18 GHz.
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[edit] Reverse polarity SMA
Reverse polarity SMA (RP-SMA or RSMA) is proprietary variation of the SMA connector. Used widely by WiFi device manufacturers such as Belkin, D-Link, Linksys, and Netgear, it is designed to be incompatible with standard SMA connectors to comply with U.S. FCC regulations which seek to prevent consumers from attaching non-standard aerials to wireless devices.
The male RP-SMA connector has the same external housing as a standard male SMA connector; however, the internal prong is replaced by a receptacle. The female RP-SMA connector has the same housing as a standard female SMA connector however the prong found on a male SMA connector is on the female RP-SMA connector.
[edit] References
- Radio-frequency connectors. Part 15: R.F. coaxial connectors with inner diameter of outer conductor 4.13 mm (0.163 in) with screw coupling — Characteristic impedance 50 ohms (Type SMA). International Standard IEC 60169-15, 1979.
- CECC 22110/111
- Connectors, plug, electrical, radio frequency. Military specification sheet MIL-C-39012.
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