AnRF connector (radio frequency connector) is anelectrical connector designed to work atradio frequencies in the multi-megahertz range.RF connectors are typically used withcoaxial cables and are designed to maintain the shielding that the coaxial design offers. Better models also minimize the change in transmission lineimpedance at the connection in order to reducesignal 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 throughelectromagnetic interference and capacitive pickup.
Mechanically, RF connectors may provide a fastening mechanism (thread,bayonet, braces,blind mate) andsprings for a low ohmic electric contact while sparing the gold surface, thus allowing very high mating cycles and reducing theinsertion 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.[2]
Common types of RF connectors are used fortelevision receivers,two-way radio,Wi-Fi PCIe cards with removable antennas, and industrial or scientific measurement instruments using radio frequencies.
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