In radar systems, a device that isolates the receiver from the transmitter while permitting them to share a common antenna. Note 1: A duplexer must be designed for operation in the frequency band used by the receiver and transmitter, and must be capable of handling the output power of the transmitter. Note 2: A duplexer must provide adequate reject [..]

(doo´pleks-er) (n.)A component of a printer that allows for both sides of a page to be printed at the same time. The duplexer typically comes as an add-on accessory to a printer and attaches to the pr [..]

A radar device that switches the antenna from the transmitter to the receiver and vice versa. Refer to the separate Dictionary of Radar Terms.