Better models also minimize the change in transmission line impedance at the connection in order to reduce signal reflection and power loss.
[1] As the frequency increases, transmission line effects become more important, with small impedance variations from connectors causing the signal to reflect rather than pass through.
An RF connector must not allow external signals into the circuit through electromagnetic interference and capacitive pickup.
Mechanically, RF connectors may provide a fastening mechanism (thread, bayonet, braces, blind mate) and springs for a low ohmic electric contact while sparing the gold surface, thus allowing very high mating cycles and reducing the insertion force.
Research activity in the area of radio-frequency circuit design has surged in the 2000s in direct response to the enormous market demand for inexpensive, high-data-rate wireless transceivers.