Editing Common emitter (section)

=== Radio ===
Common-emitter amplifiers are also used in radio frequency circuits, for example to amplify faint signals received by an [[antenna (electronics)|antenna]].{{dubious|reason=the antenna RF stage is more usually common base, it is the IF and AF stages that are common emitter|date=February 2015}} In this case it is common to replace the load resistor with a tuned circuit. This may be done to limit the bandwidth to a narrow band centered around the intended operating frequency. More importantly it also allows the circuit to operate at higher frequencies as the tuned circuit can be used to resonate any inter-electrode and stray capacitances, which normally limit the frequency response. Common emitters are also commonly used as [[low-noise amplifier]]s.