Since the double-ridged horn antenna owns many seductive characteristics, such as ultra broadband, relatively small size, high calibre efficient and gain etc.

由于双脊喇叭天线不仅具备超宽带特性，还具有体积小、增益和口径效率高等优点，因此本文选双脊喇叭天线作为所要设计的超宽带天线。

youdao

A dozen years ago ultra-fast broadband connections were rare; today they are ubiquitous.

十几年前超快的宽带连接很稀少，现今它们无所不在。

youdao

Singapore has set itself a goal of creating an ultra-fast broadband infrastructure and sees this as the foundation of a wealth of new digital services that will be delivered to its citizens.

新加坡制定了建设超高速宽带基础设施的目标，并将其视为向国民提供大量新型数字服务的基础。

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So far, more than 40 of the 65 homes in Hambleton have now subscribed to the ultra-fast broadband service.

BBC: Hambleton in Rutland gets ultra-fast broadband

By 2015 it is hoped the investments in UK cities will provide ultra-fast broadband coverage to 1.7 million households and high-speed wireless broadband for three million residents.

BBC: Northern Ireland

George Osborne has confirmed plans for a new superhospital for the Black Country, the extension of ultra-fast broadband to Coventry and the promise of major investment in the region's schools and motorways.

BBC: Can superfast Midlands speed-up economic growth?