Transceiver
From Wikipedia, the free encyclopedia
A transceiver is a device that has both a transmitter and a receiver which are combined and share common circuitry or a single housing. If no circuitry is common between transmit and receive functions, the device is a transmitter-receiver. The term originated in the early 1920s. Technically, transceivers must combine a significant amount of the transmitter and receiver handling circuitry. Similar devices include transponders, transverters, and repeaters.
Transceivers are called Medium Attachment Units (MAUs) in IEEE 802.3 documents.
Contents |
[edit] Computer networks
 |
This section is a stub. You can help by expanding it. |
In computer networking, a transceiver (sometimes abbreviated to TCVR) is a device that performs, within a common housing, on one chassis, both transmitting and receiving functions. It is sometimes designed for portable or mobile use, uses common circuit components for both transmitting and receiving, which provides half-duplex operation.
Transceivers used to be widely used in 10 Mbit/s Ethernet networks where they were known as Medium Attachment Units. Fibre-optic gigabit and 10 gigabit Ethernet also have GBIC and XAUI transceivers respectively.
[edit] Radio technology
In radio terminology, a transceiver means a unit which contains both a receiver and a transmitter. It was quite common to have these units separated. Ham radio operators can build their own equipment and it is always easier to design and build a simple unit having one of the functions, transmitting or receiving. Almost every modern amateur radio equipment is now a transceiver but there is an active market for pure radio receivers, mainly for Shortwave listening operators. An example of a transceiver would be a walkie-talkie, or a CB radio.
[edit] Telephony
On a wired telephone, the handset is the transceiver for the audio. On a mobile telephone or other radiotelephone, the entire unit is a transceiver, for both audio and radio.
A cordless telephone uses an audio and radio transceiver for the handset, and a radio transceiver for the base station. If a speakerphone is included in a wired telephone base or in a cordless base station (less common), the base also becomes an audio transceiver in addition to the handset.
Also used in Retail Stores in security devices
[edit] Sources
[edit] External articles
- Patents
- U.S. Patent 1526308 , A. J. Kloneck, "Simultaneous sending and receiving system"
- U.S. Patent 1570261 , A. J. Kloneck, "Simultaneous sending and receiving system"
- U.S. Patent 1715701 , C. Le G. Fortescue, "Combined wireless sending and receiving system"
- General
- 7 MHz SSB TRANSCEIVER 7 MHz SSB TRANSCEIVER
