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2022/12/11

回歸基礎:射頻同軸連接器的9個技術術語

今天,我們想與您分享有關RF連接器產業的9個基本術語,希望能對您有所幫助!

 

目錄:

 
 

電暈效應(Corona)

電暈效應可能導致電氣/介電/熱損壞、功率損耗、火災,以及電磁/同軸干擾。在選擇高壓連接器時,必須考慮耐用性及其在特定環境下的適用性。

大氣和環境條件、連接器的幾何形狀和材料是導致電暈效應的關鍵因素。金屬元件與導體之間的間隙以及銳角的影響,都是需要關注的重要方面。
 

 

耐電壓測試(DWV)

耐電壓(DWV,Dielectric Withstanding Voltage)是一種電氣測試,用於檢查連接器在各種條件下穩定運行的能力。

此測試確保絕緣材料能夠承受瞬間高壓脈衝而不會導致介電擊穿。不同應用場合對測試標準的要求可能會有所不同。
 

 

頻率(Frequency)

RF/微波訊號是一種交流波形(AC waveform),意味著它在正值與負值之間來回擺動。每次從正值到負值的擺動稱為一個週期,而頻率表示每秒發生的週期數量。
 

 

阻抗(Impedance)

阻抗以“歐姆”(Ohms)表示,主要由連接器的幾何結構與絕緣材料參數決定。阻抗會隨著頻率的變化而改變。

為了獲得最佳性能,連接器的阻抗必須與系統的阻抗相匹配。
 

 

插入損耗(Insertion Loss)

插入損耗是影響傳輸訊號效率的因素之一。

插入損耗指由於插入連接器導致的訊號功率損失。與電壓駐波比(VSWR)類似,它不僅與阻抗變化直接相關,還依賴於連接器絕緣材料和導體的特性。
 

 

電壓駐波比(VSWR)

電壓駐波比(VSWR, Voltage Standing Wave Ratio)表示通過連接器的傳輸訊號與反射訊號的比率,並且與頻率相關。

VSWR 與阻抗隨頻率變化直接相關。它是影響連接器總體傳輸訊號效率的兩大主要因素之一。
 

 

射頻高壓(RF High Potential)

射頻高壓指的是任何頻率高於1 MHz的連接器所能承受的最大電壓要求。此要求可確保連接器不會因高射頻電壓導致過度漏電流或介電故障。
 

 

射頻漏洩(RF Leakage)

射頻漏洩是指連接器隨頻率變化輻射出的訊號量。漏洩訊號的來源可能來自連接器外殼上的縫隙或孔洞、不良的連接器對接,或是同軸電纜中的屏蔽層。
 

 

工作電壓(Working Voltage)

工作電壓是指連接器在其額定頻率範圍和大氣條件下可安全運行的最大操作電壓。

雖然其他電壓規格可能具有更高的數值,但這些規格作為安全要求,確保連接器在額定工作電壓或以下的條件下正常運行。

 

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