The core circuit is two stages of direct-coupled difference amplifier.

核心电路为两级直接耦合差分放大器。

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Then, novel, low-cost and high performance direct-coupled E-plane filters and iris-coupled filters are analysed.

接着设计了新颖的、低成本、高性能直耦E面滤波器和膜片耦合滤波器。

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Active inductor loads and direct-coupled technology are employed to increase the gain, broaden the bandwidth, reduce the power dissipation, and keep a tolerable noise performance.

该放大器采用有源电感负载技术和放大器直接耦合技术以提高增益，拓展带宽，降低功耗并保持了良好的噪声性能。

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At Glasgow Airport, officials said the rise in passengers was down to strong demand for domestic and long-haul travel, coupled with Lufthansa Regional's launch of direct flights to Dusseldorf.

BBC: Edinburgh Airport