duplexer

plural duplexers

1. businessA device that enables communication in two directions over a single path.

   A drawback in the dual duplexer design is that six channels are lost because three band gaps are required.

   2012, TV White Space Spectrum Technologies, →ISBN

   2 more examples

   At first, making a duplexer seemed impossible, of all the filters in the cell phone, the specifications for the duplexer were by far the most stringent.

   2009, Ken-ya Hashimoto, RF Bulk Acoustic Wave Filters for Communications, →ISBN, page 119

   The HE11 mode emits a Gaussian beam into free space as is required for input to the quasi-optical duplexer attached to the antenna.

   2011, Alastair D. McAulay, Military Laser Technology for Defense, →ISBN, page 272

2. businessA accessory of some printers that automatically flips pages to print on both sides.