為無(wú)線系統(tǒng)選擇射頻連接器

　　“無(wú)線”系統(tǒng)的爆炸式增長(zhǎng)導(dǎo)致了射頻連接器及其相關(guān)電纜的同時(shí)使用。這些組件日益成為多個(gè)電路板、天線和前端之間以及功率放大器（PAS）和天線之間的重要聯(lián)系。它們有助于諸如蜂窩電話、無(wú)線數(shù)據(jù)網(wǎng)絡(luò)和先進(jìn)雷達(dá)和電子戰(zhàn)（EW）系統(tǒng)等無(wú)線設(shè)備和系統(tǒng)的運(yùn)作。

　　射頻系統(tǒng)連接器傳輸信號(hào)從一個(gè)地方到另一個(gè)簡(jiǎn)單而重要的任務(wù)，很少或沒(méi)有變化的信號(hào)（雖然在現(xiàn)實(shí)中即使有天線連接器和天線工程師經(jīng)常因素?fù)p失0.2分貝/同軸連接器除了電纜衰減本身之間的高質(zhì)量的射頻電纜）。

　　There are a variety of connectors that are used for RF applications. Among the parameters that determine the best type for a given application are frequency range， Impedance， physical size， power handling， and cost. Recently， long-established connector types， such as the venerable BNC and the SO-239/PL-259， are being supplanted by connectors tuned to the priority characteristics of the latest wireless mass-market designs： smaller， designed only for low power， and providing excellent performance at 1 GHz+. The older connectors are not obsolete： they still are used in test equipment， rack and chassis designs， and installed base/legacy products.