pifa 中文意思是什麼

pifa 解釋
血小板免疫熒光測定
  1. Pifa ( planar inverted f antenna ), which has low profile, small size, easy to design and manufacture and many other advantages, is widely used in mobile communication

    平面倒f天線（ planarinvertedfantenna ，以下簡稱pifa ）具有低剖面，體積小，易於設計製作等優點，在移動通信終端設備中被廣泛應用。
  2. Then analyse the feature of mems switch and gives a equivalent model of cantilever mems switch to analyse its characteristics. at last, a mems multi - frequency reconfigurable pifa is designed and simulated

    之後對mems開關進行了研究，並給出了懸臂梁式mems開關的模擬模型，利用此模型分析了各參數對于mems開關傳輸特性的影響。
  3. In this thesis, first, the transmission character and radiated character of pifa is analysed, then a equivalent model of pifa is built by cad software to analyse the effect of each dimension of the pifa to the characteristic of the antenna

    本文首先根據pifa天線的等效模型對其傳輸及輻射特性進行了分析研究，並使用計算機模擬軟體建立了pifa天線的電磁模擬模型，研究各個參數對于pifa天線特性的影響。
  4. Antenna parameters studies are presented and practical design considerations for achieving high gain and wide bandwidth are given. in chapter 4, a novel pifa with high radiation efficiency is designed for a tri - band mobile handset application

    天線印刷線路板的尺寸等參數對天線諧振頻率和帶寬的影響在本章中詳細研究，一個詳細的實際設計例子也在本章中介紹，測試結果表明天線獲得了較高的增益和較寬的帶寬。
  5. The gain of the mems frequency reconfigurable pifa reaches 1. 5db in all the operation band. since the mems technology has not been used in antenna field widely, the mems frequency reconfigurable pifa in this paper has considerable referenced value to the application of mems antenna

    Mems技術現在還沒有大規模應用於天線領域，本文所設計的mems頻率可重構pifa天線是mems技術在天線領域應用的有益實踐，具有一定的借鑒意義。
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