- X band
The X band is part of the
microwaveregion of the electromagnetic spectrum. Its frequency range is from 7 to 12.5 GHz. The 10.7-12.5 GHz portion overlaps the Ku band.
The term is also used informally to refer to the
extended AM broadcast band.
communications satellites, the standard downlink band (for receiving signals) is from 7.25 to 7.75 GHz, and the uplink band (for sending signals) is from 7.9 to 8.4 GHz. The typical local oscillatorfrequency of an X band LNB is 6300 MHz.
radarspot-band ranges roughly from 5.2 to 10.9 GHz.
X band radar has a variety of types. Some of these types are continuous-wave, pulsed, single-pole, dual-pole, SAR, or
phased array. X band radar has various uses in civil, military and governmentinstitutions; in roles such as weather monitoring, air traffic control, maritime vessel traffic control, defense tracking, and vehicle speed detection for law enforcement. [ [http://www.everythingweather.com/weather-radar/bands.shtml Radar Bands ] ]
X band radar systems have been of great interest in the last few decades. The relative short
wavelengthat X-band frequencies makes possible high-resolution imaging radars for target identificationand target discrimination.
Terrestrial communications and networking
In Ireland, Libya, Saudi Arabia and Canada, the X-band 10.15 to 10.7 segment is used for terrestrial broadband. Alvarian, Cambridge, and Ogier make systems for this, though these are all incompatible. The Ogier system is a full duplex
Transverterused for DOCSISover microwave. The home / Business CPEhas a single coax with a power adapter connecting to an ordinary cable modem. The local oscillator is usually 9750 MHz, the same as for Ku-band satellite TV LNB. Two way applications such as broadband typically use a 350 MHz TX offset.
Many countries allow 10.000 to 10.500 GHz (with often a gap 10.27 to 10.3) for radio amateurs.
Motion detectors often use 10.525 GHz. [ [http://www.g3pho.free-online.co.uk/microwaves/wideband.htm 10Ghz Wideband Transceiver] ] 10.4 GHz is proposed for traffic lightcrossing detectors.
Sea-based X-band Radar
Voyager program#Spacecraft design
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