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Transmission Lines 原文翻譯..

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Twisted pairs of wires are often used as transmission lines for relatively low frequencies, because of their low cost and because of the large amount of twisted-pair line that is already installed as part of the telephone sys-tem.

Transmission-line techniques do not need to be used at audio frequencies unless the distance is great.

雙絞線相對地經常被使用當傳輸線為低頻率, 由於他們的低成本和由於已經被安裝作為電話系統一部分的很多條twisted-pair 線。

傳輸線技術不需要被使用以音頻除非距離是偉大的。

=CHAPER 6 -Page 170=

When higher frequencies are used as when telephone signals are multiplexed using TDM or twisted-pair line is used for local-area computer networks, these techniques are required.

Twisted-pair line is illustrated in Figure 6.3(c).

當更高的頻率被使用和當電話信號多元化使用TDM 或雙絞線被使用為本地區域的電腦網路, 這些技術必需。

雙絞線被說明在表6.3(c) 。

In the microwave region, wavelengths are short (millimeters to centimeters) and even relatiyely short printed-circuit board traces exhibit trans-mission-line effects.

Often these traces are carefully designed to have known characteristics.

There are tow main types of such lines.

Microstrip lines consist of a circuit-board trace on one side of a dielectric substrate the ground plane on each side of the board with a conducting trace in the center.

Both of these lines are illustrated in Figure 6.4.

Of the two, microstrips are easier to build and to connect to components, but striplines radiate less energy.

在微波區域, 波長是短的(毫米對厘米) 並且 relatiyely 短的印刷電路板橫向線追蹤陳列影響。

經常這些嚴重地被意圖知道特性。

有拖曳主要類型在此類的線。

微帶線包括電路委員會蹤影在一個電介質基體的一邊地面飛機在各委員會的邊以舉辦的蹤影在中心。

這兩條線被說明在表6.4 。

二, 微帶線是容易修造和連接到組分, 但帶狀線放熱較少能量。

2 個解答

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  • 匿名使用者
    1 0 年前
    最佳解答

    Twisted pairs of wires are often used as transmission lines for relatively low frequencies, because of their low cost and because of the large amount of twisted-pair line that is already installed as part of the telephone sys-tem.

    Transmission-line techniques do not need to be used at audio frequencies unless the distance is great.

    雙絞線經常被使用較低頻率的傳輸線, 由於他們的成本低和由於雙絞線已經被大量用於電話系統中。

    除非距離是過大,不然音頻是不需要使用傳輸線技術的。

    =CHAPER 6 -Page 170=

    When higher frequencies are used as when telephone signals are multiplexed using TDM or twisted-pair line is used for local-area computer networks, these techniques are required.

    Twisted-pair line is illustrated in Figure 6.3(c).

    當使用更高的頻率時,如當電話信號使用TDM做多工處裡或雙絞線被用為本地區域的電腦網路, 這些技術則是需要的。

    圖6.3(c)中為雙絞線說明 。

    In the microwave region, wavelengths are short (millimeters to centimeters) and even relatiyely short printed-circuit board traces exhibit trans-mission-line effects.

    Often these traces are carefully designed to have known characteristics.

    There are tow main types of such lines.

    Microstrip lines consist of a circuit-board trace on one side of a dielectric substrate the ground plane on each side of the board with a conducting trace in the center.

    Both of these lines are illustrated in Figure 6.4.

    Of the two, microstrips are easier to build and to connect to components, but striplines radiate less energy.

    在微波區域中, 波長是極短的(毫米或厘米), 甚至可由印刷電路板上短線路的設計看出傳輸線的影響。

    這些線路經由小心的設計以期保有預期的特性。

    此類的線可分為幾大類型。

    微帶線由與電路板上的相同線組成置於一個非導體的一面,地線分別置於兩邊將導線(訊號線)包在中間。

    這兩種線說明如圖6.4 。

    微帶線易於組裝和連接到元件, 但帶狀線傳送能量低。

    參考資料: Own work
  • 1 0 年前

    纏繞對電線經常被為相對低頻作為傳輸線使用, 因為他們低成本和因為大數額的已經被設置為電話sys tem的部分的雙扭線產品。 傳輸線技術不需要被在音頻使用,除非距離是大的。

    更高的頻率被用作電話信號被使用TDM 多路傳輸或者雙扭線產品用于局部地區計算機網什麼時候,這些技術被要求。 雙扭線行被在圖6.3(c)說明。

    在微波地區內,波長短(毫米在厘米)和短印製電路板蹤跡展覽橫穿任務產品效應的relatiyely 甚至。 經常這些蹤跡被仔細用于知道特性。 有拖這樣的線的主要類型。 Microstrip產品由一電路板蹤跡在透視地平面的一側一非導電性底層上組成在這塊板的每邊, 由於處理的蹤跡在中心。 這兩個線被在圖6.4 說明。 在這兩個中,microstrips更容易建造並且連接組成部分,但是striplines 散發出較少能量。

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