RP-SMA to...

RP-SMA is designed for a diverse range of RF applications and is suitable for communications DC to 18GHz.

Identical to SMA design, but with a reversed gender.

Gender naming is made in reference to the plug or socket's body rather than conventionally by the pin itself.

This means that a RP-SMA Male connector will have a female receptacle - i.e. the pin's gender is reversed, hence reversed polarity.