恩智浦半導體 NXP Semiconductors N.V. (NASDAQ：NXPI) 近日宣布推出SiGe:C低噪聲放大器（LNA），進一步提高了GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" 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title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS" title="GPS">GPS信號的線性度、噪聲系數以及GPS（包括GLONASS和伽利略衛星定位系統）的接收效果，同時繼續保持恩智浦在此類產品市場上的體積最小。恩智浦BGU700x系列作為業界首款可以動態抑制手機、藍牙及WLAN過強發射信號的GPS LNA產品，保證了微弱的GPS信號能夠得到最佳的接收效果，在-40至 -20 dBm干擾環境下能將信號提高10 dB或者提供更好的IP3，同時將噪聲系數控制在1 dB以下。BGU700x LNA產品僅需兩個外部元件，節省50%的PCB面積和10%的器件成本。
　
　　恩智浦半導體產品市場經理Duco Das表示，“消費者對于GPS接收效果的要求與日俱增，這就使得GPS接收效果朝著首次定位時間更短，定位精度更高的方向推進。而我們最新的LNA產品能提供完整可靠的IC解決方案，全面提高GPS性能，阻止其他干擾信號進入器件。LNA可以根據信號輸入狀況動態調節設備的接收，傳輸更多所需的頻率信號，同時最大可能地保持GPS信號處于連通狀態。對于尋求分立解決方案改善GPS接收的設計人員來說，我們的新型LNA系列無疑是理想的首選。”
　　
　　GPS 作為標準功能配置被廣泛應用于各種消費產品，如個人導航設備、數字攝像機、手表、電動汽車等。GPS信號的功率水平相對較弱，低于-155 dBm的底噪。很多消費產品，特別是智能手機，其中的藍牙、WLAN及蜂窩單元等強發射器會驅使GPS LNA進入飽和狀態。GPS LNA在飽和狀態下，增益會降低，結果造成GPS接收不良；同時在發射機信號中還會形成互調與諧波，抑制微弱信號，導致GPS接收失靈。
　　
　　恩智浦BGU700x/BGU8007系列采用自適應偏置技術，能夠實時檢測到任何干擾源的輸出信號，通過臨時增大電流對GPS信號進行補償。從而始終保持最佳的GPS信號接收狀態。BGU700x/BGU8007系列中的每款器件只需一個輸入匹配電感和一個供電去耦電容。這種設計非常緊湊，而且節省了大量材料。例如，BGU7005采用1.45 x 1 mm封裝，應用面積僅需4.53 mm2。與9.06 mm2應用面積的方案相比，減少了50%。新款LNA還提供極小型6管腳封裝，可減小面積、降低成本并且改善接收效果，適用于有源天線或貼片天線系統。
　
　　主要特性：
　　•低噪聲：0.75 dB
　　•系統優化增益：16.5或19 dB
　　•符合AEC-Q100 標準（BGU7004、BGU7008），在惡劣條件下保證最高可靠性
　　•小型、6管腳無引腳封裝1.45 x 1.0 x 0.5 mm
　　
上市時間
　　新型BGU700x/BGU8007 LNA目前已上市。
　　
鏈接
　　•下載NXP GPS LNA BGU700x 產品手冊： http://www.nxp.com/documents/leaflet/75017194.pdf
　　•BGU7004
　　•BGU7005
　　•BGU7007
　　•BGU7008
　　•BGU8007
　　•視頻：恩智浦GPS與FM低噪聲放大器：最小體積提供最佳接收效果http://v.youku.com/v_show/id_XMzM0MjQ2NTgw.html