Antenna Diversity is a transmission technique in which the information-carrying signal is transmitted along different propagation paths. This can be achieved by using multiple receiver antennas (diversity reception) and/or by using multiple transmitting antennas In electronics, diversity reception refers to a method for improving reception of a radio signal, typically achieved by the use of dual receivers whose antennas are located in physically distinct locations (which can be less than a metre apart). ...

Even if the antennas are not more than a quarter of the wavelength apart, much of the achievable antenna gain is realized. A diversity combining circuit combines or selects the signals from the receiver antennas to constitute an improved quality signal. Diversity Combining is the technique applied to combine the multiple received signals of a diversity reception device into a single improved signal. ... There are many kinds of circuit An electric circuit interconnects electrical elements. ...

A well-known practical application of diversity reception is in wireless microphones, and in similar electronic devices such as wireless guitar systems. A wireless microphone with a non-diversity receiver (a receiver having only one antenna) is prone to random drop-outs, fades, noise, or other interference, especially if the transmitter (the wireless microphone) is in motion. A wireless microphone or sound system using diversity reception will switch to the other antenna within microseconds if one antenna experiences noise, providing an improved quality signal with fewer drop-outs and noise. Ideally, no drop-outs or noise will occur in the received signal. Two digital voltmeters The field of electronics is the study and use of electronic devices that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. ... The classical guitar typically has 3 nylon and 3 nickel-wound strings. ... Inside a condenser microphone. ... Interference of two circular waves - Wavelength (decreasing bottom to top) and Wave centers distance (increasing to the right). ... Antenna tower of Crystal Palace transmitter, London A transmitter (sometimes abbreviated XMTR) is an electronic device which with the aid of an antenna propagates an electromagnetic signal such as radio, television, or other telecommunications. ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...

Another common usage is in Wi-fi networking gear to compensate for multipath interference. This approach switches reception to one of two antennas depending on which is currently receiving better. For best results, the antennas are usually placed one wavelength apart. Because of the sheer size of antenna farms required, this is not often used at frequencies lower than the microwave band. Wi-Fi (or Wi-fi, WiFi, Wifi, wifi), short for Wireless Fidelity, is a set of product compatibility standards for wireless local area networks (WLAN) based on the IEEE 802. ... In telecommunication, multipath is the propagation phenomenon that results in radio signals reaching the receiving antenna by two or more paths. ... Aerial redirects here. ... This page is about the radiation; for the appliance, see microwave oven. ...

Mobile phone towers also often take advantage of diversity -- each face of a tower will often have three antennas; one is transmitting, while the other two are performing Diversity reception. In electronics, diversity reception refers to a method for improving reception of a radio signal, typically achieved by the use of dual receivers whose antennas are located in physically distinct locations (which can be less than a metre apart). ...

The use multiple antennas at both transmit and receive results in a multiple-input multiple-output (MIMO) system. The use of diversity techniques at both ends of the link is termed space–time coding. MIMO stands for multiple-input multiple-output, an abstract mathematical model for some systems. ... A space time code is a method employed to increase wireless communication system channel capacity using multiple antennas. ...

References: Federal Standard 1037C and MIL-STD-188 Federal Standard 1037C entitled Telecommunications: Glossary of Telecommunication Terms is a U.S. Federal Standard, issued by the General Services Administration pursuant to the Federal Property and Administrative Services Act of 1949, as amended. ... MIL-STD-188 is a series of U.S. military standards relating to telecommunications. ...

See also

• Space–time code