(WIRELESS High Definition) A short-range wireless technology from the WirelessHD Consortium. It provides up to 4 Gbps of data transmission in the unlicensed 60 GHz band over a distance of approximately 10 meters. The first 60 GHz wireless standard, WirelessHD (WiHD) was designed to transmit uncompressed HD video and other media between TVs and A/V equipment. Consortium founders include SiBEAM, LG, NEC, Panasonic, Sony, Toshiba and Samsung.
At 60 GHz, the wavelength is only five millimeters and highly directional; however, in 2007, SiBEAM demonstrated its OmniLink60 CMOS chips which steer the signal to take advantage of surface areas such as walls and objects in the room using an array of up to 36 antennas on a 1" square surface. See WiGig and ISM band.
As soon as an obstacle such as a person interrupts a WirelessHD signal, it uses another route to reach the TV; in this example by bouncing off the back wall. Using beamforming techniques, the transmitter is constantly scanning for alternate pathways to the receiver in order to be capable of immediately switching to a different one when necessary (see
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