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Direct Broadcast Satellite Applications
One of the main reasons for the popularity of direct broadcast satellite (DBS) service is the small size of the parabolic dish antenna. The key to the small-size dish is a low-noise GaAs transistor used in the low-noise block of the DBS receiver system. One of HP's efforts in this area has been to develop an AlInAs/GaInAs device fabricated on a conventional GaAs substrate that has a lower noise figure, higher gain, and lower cost.
by Shunichiro Yajima, Antoni C. Niedzwiecki
 Article 6 - feb98a6.pdf
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