Antennas

Some articles on antennas, antenna:

Signals Intelligence Operational Platforms By Nation - Ground Platforms - Australia: Ground Platforms
... It is reported to have four satellite antennas...trained on satellites above the Indian Ocean and the Pacific ... It has 18 antennas, and has been considered first a receiving station for SIGINT satellites, but the size of some of its antennas are more associated with a requirement to intercept communications from ... Of the satellite antennas visible on photographs, the five larger ones have a maximum diameter of 8 m, and the sixth antenna visible is smaller still ...
Spatial Correlation
... communication systems can be improved by having multiple antennas at the transmitter and the receiver ... is that if the propagation channels between each pair of transmit and receive antennas are statistically independent and identically distributed, then multiple independent channels with identical characteristics ... In practice, the channels between different antennas are often correlated and therefore the potential multi antenna gains may not always be obtainable ...
Panorama Antennas
... Panorama Antennas Ltd is a British based company that designs and manufactures communications antennas and closely related diplexer products ...
Many Antennas
... Many antennas is a smart antenna technique which overcomes the performance limitation of single user multiple-input multiple-output (MIMO) techniques ... In cellular communication, the maximum number of considered antennas for downlink is 2 and 4 to support 3GPP Long Term Evolution (LTE) and IMT Advanced requirements, respectively ... support the mobile multimedia services, it is highly probable that the number of transmit antennas at the base station must be increased to 8–64 or more ...
Sector Antenna - Use
... or widen the coverage area, and thus the number of served clients, several sector antennas are installed on the same supporting structure, e.g ... Such a construction is often called a sectorized antenna, though sometimes for brevity "sector antenna" is used as well ... It has several angularly-separated sector antennas as shown on the figures at right ...