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You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/hdtv.ru/engine/modules/show.full.php on line 457 Toshiba представляет 60-ГГц чип для беспроводных сетей будущего
HDTV.ru > Новости индустрии > Toshiba представляет 60-ГГц чип для беспроводных сетей будущего

Toshiba представляет 60-ГГц чип для беспроводных сетей будущего


19.06.2007
Toshiba представляет 60-ГГц чип для беспроводных сетей будущего В конце прошлой недели, в ходе симпозиума по СБИС в Киото (2007 Symposia on VLSI Circuits) корпорация Toshiba представила первый КМОП-чип, способный работать с тактовой частотой 60 ГГц. До сих пор подобные решения, предназначенные для использования в беспроводных коммуникационных устройствах, создавались из арсенида галлия. Соответственно, разработка Toshiba призвана сделать новый частотный диапазон более доступным, так как кремниевые микросхемы обычно дешевле арсенид-галлиевых.

Тестовый чип обладает размерами 2,4х1,1 мм и содержит в себе все основные функциональные блоки приемника – антенну, усилитель, понижающий преобразователь частоты и цепь обратной связи с фазовой автоподстройкой. Прототип, обеспечивающий работу до 61,5 ГГц с динамическим диапазоном 22 дБ, создан с соблюдением норм 90-нм КМОП-процесса. В Toshiba уверены, что их микросхема – первое решение подобного рода.

По утверждению компании, себестоимость КМОП-решения примерно в десять раз ниже, чем у аналогичного модуля из арсенида галлия. Для того, чтобы решить проблему возникновения паразитных ёмкостей и индуктивностей внутренних соединений, была применена дифференциальная структура, в том числе дифференциальная дипольная антенна, размещенная прямо на кристалле. В принципе, дифференциальный подход уже используется в дизайнах решений для мобильных телефонов, но, по словам представителей Toshiba, он был впервые применен для 60-ГГц решений. Дополнительно, в решении применяется наложение сигнала с обратной фазой для снижения уровня шума.

Подобные разработки должны помочь развитию домашних беспроводных сетей, где в последнее время остро стоит вопрос о передачи видео высокого разрешения между различными компонентами домашнего кинотеатра.
Toshiba всячески будет оказывать поддержку по внедрению данной технологии, однако доработка всё еще ведется.
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