antenna diversity


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antenna diversity

Using two or more receiving antennas on a wireless device to eliminate multipath signal distortion. Typically, the signal from the antenna with the least noise (best SNR) is chosen, and the other antenna is ignored. However, there are also methods that use incoming signals from both antennas. It is quite common to see two antennas on 802.11 wireless LAN access points and PC cards. See MIMO, beamforming, signal-to-noise ratio and multipath.


Antenna Diversity for 802.11
Note the dual antennas on the 802.11b access point (top left) and PC card (bottom) from Alvarion. Antenna diversity is an important feature of the 802.11 specification. (Image courtesy of Alvarion Ltd., www.alvarion.com)
References in periodicals archive ?
We congratulate Cobham SATCOM on its Antenna Diversity Solution and are delighted on its type approval.
2], and as a result of 100 antennas the antenna diversity on the performance will be examined.
The product family comes with different sets of features which allow users to upgrade their wireless IoT systems with extended range, increased tolerance to antenna impedance variations, improved link reliability through antenna diversity, and improved coexistence performance with adjacent radios through LNA bypass.
The RFX2411 includes an additional antenna diversity switch, as well as a bypass mode to provide maximum flexibility for system implementations.
Analyzing Figure 4 it can be noticed that antenna diversity can improve the overall performance of the device.
This antenna diversity technology helps provide greater range and coverage compared to more traditional three-antenna devices, so all connected devices can achieve the best performance wherever they are located.
It also features multicarrier support for global use, support of static or dynamic IP addressing, secure network functionality and high performance antenna diversity for challenging cellular environments, www.
Antenna diversity involves coplanar twin antenna system with separate feeds [10-14], this enhances reception capability of antenna and increases antenna gain.
Therefore, the combination of UWB technique and antenna diversity technology is a promising research direction.
Antenna diversity gain for beam-steering characterized by the different state of operations.
Romeu, "Optimum antenna matching to minimize signals correlation on a two-port antenna diversity system," Electronics Letters, Vol.
Built-in antenna diversity and support for frequency hopping further extends range and enhances wireless performance.