TW548874B - Multiplayer LC resonance balance-to-unbalance - Google Patents
Multiplayer LC resonance balance-to-unbalance Download PDFInfo
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V 548874 五、發明說明(1) 發明領域 本發明係關於平衡至非平衡轉換器(b a 1 a n c e - t 〇 -unbalance,balun)。特別是,關於一種多層型電感電容 共振式平衡至非平衡轉換器(multilayer LC resonance b a 1 u η )。此轉換器適合製作成微小型晶片大小元件,及應 用於無線區域網路(wireless local network)及個人行動 通訊設備中。 發明背景 平衡至非平衡轉換器是一種將非平衡式架構或是信號 與平衡式架構或是信號作轉換的裝置。平衡式信號的特性 是兩個具有大小相等但相位差(phase difference)180度 的信號。許多類比電路往往需要平衡式的輸出與輸入,既 可以降低雜訊、改善高次諧波的發生,也可以提高電路的 動態範圍。 平衡至非平衡轉換器有多種,主要分為主動式 (active)與被動式(passive)。一般被動式平衡至非平衡 轉換器可以分為集總式(1 u m p e d -1 y p e )、繞線式(c 〇 i 1 -type)及分佈式(distributed-type)三種。集總式的型式 是利用集總式電容及電感,一方面作阻抗匹配,一方面產 生1 8 0度的相位差及相等信號大小的平衡。此集總式平衡V 548874 V. Description of the invention (1) Field of the invention The present invention relates to a balanced-to-unbalanced converter (b a 1 a n c e-t 0 -unbalance, balun). In particular, it relates to a multilayer LC resonance bbalanced to unbalanced converter (multilayer LC resonance b a 1 u η). This converter is suitable for making micro-chip-sized components, and is used in wireless local network and personal mobile communication equipment. BACKGROUND OF THE INVENTION A balanced-to-unbalanced converter is a device that converts an unbalanced architecture or signal to a balanced architecture or signal. The characteristics of a balanced signal are two signals with equal magnitude but a phase difference of 180 degrees. Many analog circuits often require balanced output and input, which can reduce noise, improve the occurrence of higher harmonics, and increase the dynamic range of the circuit. There are many types of balanced-to-unbalanced converters, mainly divided into active (passive) and passive (passive). Generally, passive balanced-to-unbalanced converters can be divided into three types: lumped type (1 u m p d -1 y p e), winding type (c 0 1 -type) and distributed (type). The lumped type uses lumped capacitors and inductors for impedance matching on the one hand, and a phase difference of 180 degrees and a balance of equal signal sizes on the other. Lumped balance
第4頁 _1 548874 五、發明說明(2) 至非平衡轉換器的尺寸微小,非常輕巧。但操作頻寬較 小,且不容易維持其相位差及信號大小的平衡。繞線式平 衡至非平衡轉換器則廣泛使用在較低頻帶和U H F ( u 11 r a high freqency)頻帶,但應用在超過UHF頻帶時會有過大 的4貝耗’而且縮小化程度已達極限。分伟式平衡至非平衡 轉換為主要有180度混成型(hybrid)和馬式(Marchand)兩 種。1 8 0度混成型平衡至非平衡轉換器常使用在微波頻帶 ,也有很好的操作頻寬特性,但應用在射頻(r a(i i 〇 frequency,RF)時,頻率介於200MHz至數GHz之間,由於 其由數節四分之一波長的傳輸線所構成,所以尺寸往往太 大,即使利用曲折(m e a n d e r )的方式,也很難大量縮小其 面積,若利用一功率分配器再加上一對不同長度傳輸線以 產生1 8 0度相位差的結構,也有尺寸過大的問題。 、目月ίι最常使用的馬式平衡至非平衡轉換器是利用兩節 四分之一波長的耦合線所構成,如圖1所示。此種平衡至 非平衡轉換器擁有相當大的使用頻寬,不僅相位平衡度佳 一而且功率分配度也佳。一般而言,此種馬式平衡至非平 衡轉換器所使用的傳輸線必須具有較大的耦合量,其頻寬 才會良好’因此選擇使用不佔面積的垂直耦合(br〇adside coupled)的方式,並適合利用曲折方式加以縮小,常見於 射頻上的應用,並配合利用高介電係數的材料予以縮小化 〇Page 4 _1 548874 V. Description of the invention (2) The size of the unbalanced converter is small and very light. However, the operating bandwidth is small and it is not easy to maintain the balance of its phase difference and signal size. Wound-balanced balanced-to-unbalanced converters are widely used in lower frequency bands and U H F (u 11 r a high freqency) frequency bands, but when applied beyond UHF frequency bands, there will be excessive 4 dB losses, and the degree of reduction has reached the limit. There are two main types: balanced and unbalanced. There are two types: 180 degree hybrid and Marchand. The 180-degree hybrid balanced-to-unbalanced converter is often used in the microwave band and also has good operating bandwidth characteristics. However, when applied to radio frequency (ra (ii 〇frequency, RF), the frequency is between 200MHz to several GHz. In the meantime, because it is composed of several quarter-wavelength transmission lines, the size is often too large, and it is difficult to reduce its area by a large amount even if a meander is used. For structures with different length transmission lines to produce a 180 degree phase difference, there is also the problem of over-size. The horse-type balanced-to-unbalanced converter most commonly used is a two-quarter wavelength coupling line. The structure is shown in Figure 1. This balanced-to-unbalanced converter has a considerable bandwidth, which not only has a good phase balance but also a good power distribution. Generally speaking, this horse-balanced to-unbalanced converter The transmission line used must have a large amount of coupling in order for its bandwidth to be good. 'Therefore, a method of vertical coupling (broth side coupling) that does not occupy area is selected, and it is suitable to use the zigzag method. The formula is reduced, which is commonly used in RF applications, and it is reduced with the use of high dielectric constant materials.
第5頁 548874 五、發明說明(3) 美國專利5,4 9 7,1 3 7的文獻裡,揭露了 一種晶片型的 轉換器(chip type transformer),如圖2所示。此晶片型 的轉換器包括一積層薄板(;^111][1181^)2〇〇,此積層薄板備 有弟 至苐五介電基板(dielectric substrate)214a〜 214e 此五片介電基板被往上堆疊(superimposed one on the.other)而成。在第一介電基板214a的一主要表面 (mai resurface)上形成一接地電極(earth electrode)216 在弟五;i笔基板2i4e的一主要表面(main surface)上也 形成一接地電極230。在第二介電基板214b的一主要表面 成一連接電極(connecting electr〇de)22〇。在第三 介電基板214c的一主要表面上形成一第一帶線(strip 1 ine) 2 2 2,此第一帶線22 2係由一第一螺旋狀部分 (spiral^ port ion) 2 2 4a和一第二螺旋狀部分2 2 4b所構成 的。在第"四一介電基板2 14d的一主要表面上形成一第二帶線 2 2 6々和一第三帶線228,此第二帶線226和第三帶線22 8分別 與第一帶線2 2 2的第一螺旋狀部分2 2 4 a和第二螺旋狀部八 2曰24b電磁性連結(electr〇magneticaUy⑶㈣⑼七以)。:匕 晶f型的轉換器的結構是使用垂直耦合的方式,並配人 用高介電常數的材料來達到縮小化。唯,在低介: 材料則無法將元件縮小至晶片型的尺寸。 吊数的 發明概要 本發明克服上述傳統平衡至非平衡轉換器的缺點。苴Page 5 548874 V. Description of the invention (3) In the documents of US Patent Nos. 5,4,97,137, a chip type transformer is disclosed, as shown in FIG. 2. This chip-type converter includes a laminated sheet (; ^ 111] [1181 ^) 200. This laminated sheet is provided with a dielectric substrate (dielectric substrate) 214a to 214e. The five dielectric substrates are fed to Superimposed one on the.other. A ground electrode 216 is formed on a main surface of the first dielectric substrate 214a. A ground electrode 230 is also formed on a main surface of the pen substrate 2i4e. A connecting electrode 22 is formed on a main surface of the second dielectric substrate 214b. A first strip line 2 2 2 is formed on a main surface of the third dielectric substrate 214c. The first strip line 22 2 is formed by a first spiral port ion 2 2 4a and a second spiral portion 2 2 4b. A second strip line 2 2 6 々 and a third strip line 228 are formed on a main surface of the " fourth dielectric substrate 2 14d. The first helical portion 2 2 4 a of a strip line 2 2 2 and the second helical portion 8 2 or 24 b are electromagnetically connected (electr. MagneticaUy.). : The structure of the crystal f-type converter uses a vertical coupling method and is matched with a high dielectric constant material to reduce the size. However, in low dielectrics: materials cannot shrink components to chip size. SUMMARY OF THE INVENTION The present invention overcomes the disadvantages of the conventional balanced-to-unbalanced converter described above. Tho
第6頁 548874 五、發明說明(4) 主要目的之一是,提供一種多層型LC共振式平衡至非平衡 式轉換器。此多層型LC共振式平衡至非平衡式轉換器包含 一個多層型的LC共振腔,此LC共振腔的等效電路包括至少 一節垂直耗合線、至少一節傳輸線和至少一個電容。 根據本發明,此多層型L C共振式平衡至非平衡式轉換 器係綜合LC共振腔、多層化,和曲折福合傳輸線的方式, 而達到大幅縮小元件尺寸的目的,而且係利用較低介電常 數的材料製成的平衡至非平衡式轉換器。所以也較能達到 維持元件特性之穩定度的目的。 又,由於本發明之耦合傳輸線在幾何結構上完全對稱 於結構中心點,因此具有很好的相位和振幅的平衡度。甚 且,適當調整耦合線及電容的比例,可使平衡端得到適當 的阻抗匹配。本發明之轉換器極適合應用於無線區域網路 及個人行動通訊設備,並極具市場經濟效應的優點。 在本發明之兩種較佳實施例的架構中,第一種較佳實 施例的一個L C共振腔的等效電路是由兩節搞合線(c 〇 u p 1 e d 1 i n e )、一節傳輸線及並聯一個電容所構成。適度增大此 等效電路的並聯電容值5更可以縮小元件的設計尺寸。甚 且將電容移至垂直耦合傳輸線的上方或是下方,充分利用 多層電路架構的特點,來達成大幅縮小元件尺寸的平衡至 非平衡式轉換器。Page 6 548874 V. Description of the Invention (4) One of the main purposes is to provide a multilayer LC resonant balanced-to-unbalanced converter. The multilayer LC resonant balanced-to-unbalanced converter includes a multilayer LC resonant cavity. The equivalent circuit of the LC resonant cavity includes at least one vertical dissipative line, at least one transmission line, and at least one capacitor. According to the present invention, this multilayer LC resonant balanced-to-unbalanced converter is an integrated LC resonant cavity, multi-layered, and zigzag transmission line, which achieves the purpose of greatly reducing the size of the component, and uses a lower dielectric Constant-to-unbalanced converter made of constant materials. Therefore, it can better achieve the purpose of maintaining the stability of the device characteristics. In addition, since the coupled transmission line of the present invention is completely symmetrical to the structure center point in geometry, it has a good balance between phase and amplitude. Moreover, proper adjustment of the ratio between the coupling line and the capacitor can make the balanced terminal get proper impedance matching. The converter of the present invention is very suitable for wireless local area network and personal mobile communication equipment, and has the advantages of market economy effect. In the architecture of the two preferred embodiments of the present invention, the equivalent circuit of an LC resonant cavity of the first preferred embodiment is composed of two joint lines (coup 1 ed 1 ine), one transmission line, and Made up of a capacitor in parallel. Increasing the parallel capacitance value 5 of this equivalent circuit modestly reduces the design size of the component. The capacitors are even moved above or below the vertically coupled transmission lines to take full advantage of the characteristics of the multilayer circuit architecture to achieve a balanced-to-unbalanced converter that significantly reduces component size.
第7頁 548874 五、發明說明(5) 第二種較佳實施例的一個L C共振腔的等效電路是由一 節耦合線分別並聯一個電容,然後分別在兩端各串接一節 傳輸線所構成。其中與非平衡端連接的為等效四分之一波 長傳輸線之LC共振腔,而與平衡端接連的則為等效二分之 一波長傳輸線之L C共振腔。充分利用L C共振腔原理,來達 到尺寸縮小的目的。平衡端的阻抗匹配及振幅與相位平衡 度,可經適當設計等效二分之一波長之LC共振腔及兩個傳 輸線長度來獲得。 另外,製作成微小型晶片大小元件時,本發明之多層 型L C共振式平衡至非平衡式轉換器的耦合線繞線方式可利 用螺旋式(spiral)、曲折式(meander)、弦波式 (sinusoidal)和鑛齒式(triangular)等多種方式繞 線。 本發明之兩種較佳實施例的運作效益,經模擬並量測 其信號之振幅(a m p 1 i t u d e )和相位平衡特性的結果,在操 作頻率為2. 44GHz,且操作頻寬為2 0 0 MHz下,其信號之振 幅差在2 d B以内,相位差也在5度以内。 茲配合下列圖式、實施例之詳細說明及專利申請範 圍,將上述及本發明之其他目的與優點詳述於后。Page 7 548874 V. Description of the invention (5) The equivalent circuit of an LC resonant cavity of the second preferred embodiment is composed of a coupling line connected in parallel with a capacitor, and a transmission line connected in series at each end. Among them, the LC cavity of the equivalent quarter wave transmission line is connected to the unbalanced end, and the LC cavity of the equivalent half wavelength transmission line is connected to the balanced end. Make full use of the LC resonant cavity principle to achieve the purpose of size reduction. The impedance matching at the balanced end and the balance between amplitude and phase can be obtained by appropriately designing an equivalent half-wavelength LC resonant cavity and two transmission line lengths. In addition, when manufacturing micro-chip-sized components, the multi-layer LC resonant balance-to-unbalance converter coupling wire winding method of the present invention can use a spiral type, a meander type, and a sine wave type ( sinusoidal and triangular winding. The operating benefits of the two preferred embodiments of the present invention, as a result of simulating and measuring the amplitude (amp 1 amplitude) and phase balance characteristics of their signals, the operating frequency is 2. 44 GHz, and the operating bandwidth is 2 0 0 At MHz, the amplitude difference of the signal is within 2 d B and the phase difference is within 5 degrees. The above and other objects and advantages of the present invention are described in detail below in conjunction with the following drawings, detailed description of the embodiments, and the scope of patent applications.
548874 五、發明說明(6) 圖式之簡要說明 圖1為一習知之馬式平衡至非平衡轉換器的示意圖。 圖2為一習知之晶片型的轉換器的示意圖。 圖3a為根據本發明之LC共振式平衡至非平衡轉換器,其LC 共振腔的第一較佳實施例的等效電路示意圖。 圖3 b係將圖3 a演生為多節垂直耦合線,和並聯多個電容的 示意圖。 圖4a為根據本發明之LC共振式平衡至非平衡轉換器,其LC 共振腔的第二較佳實施例的等效電路示意圖。 圖4 b係將圖4 a演生為多節垂直福合線和並聯多個電容的示 意圖。 圖5 a〜圖5 d為根據本發明之耦合線繞線的四種實施方式, 分別為螺旋式、曲折式、弦波式和鋸齒式。 圖6 a〜圖6 b係將圖3a之等效電路利用多層電路架構的特點 ,來增大此等效電路的並聯電容值,其中分別使用兩種螺 旋式的耦合線繞線的方式。548874 V. Description of the invention (6) Brief description of drawings Figure 1 is a schematic diagram of a conventional horse-type balanced to unbalanced converter. FIG. 2 is a schematic diagram of a conventional chip-type converter. 3a is an equivalent circuit diagram of a first preferred embodiment of an LC resonant cavity of an LC resonant balanced-to-unbalanced converter according to the present invention. Figure 3b is a schematic diagram of Figure 3a as a multi-section vertical coupling line and multiple capacitors connected in parallel. 4a is a schematic diagram of an equivalent circuit of a second preferred embodiment of an LC resonant cavity of an LC resonant balanced-to-unbalanced converter according to the present invention. Figure 4b shows the schematic diagram of Figure 4a as a multi-section vertical fuse line and multiple capacitors connected in parallel. 5 a to 5 d are four implementations of a coupling wire winding according to the present invention, which are respectively a spiral type, a zigzag type, a sine wave type, and a sawtooth type. Figures 6a to 6b use the equivalent circuit of Figure 3a to take advantage of the characteristics of a multi-layer circuit architecture to increase the parallel capacitor value of this equivalent circuit. Two types of spiral coupling wires are used for winding.
548874 五、發明說明(7) 圖7係將圖4a之等效電路利用LC共振腔原理及多層電路架 構的特點,來達到尺寸縮小的目的,其中使用曲折式的耦 合線繞線的方式。 圖8 a說明本發明之第一較佳實施例之輸入耗損及返回損耗 特性量測結果。 圖8 b說明本發明之第一較佳實施例之兩平衡輸出璋信號的 振幅和相位的誤差值的量測結果。 圖9 a說明本發明之第二較佳實施例之輸入耗損及返回損耗 特性量測結果。 圖9 b說明本發明之第二較佳實施例之兩平衡輸出埠信號的 振幅和相位的誤差值的量測結果。 圖號說明 2 0 0 積層薄板 2 1 6、2 3 0 接地電極 2 2 2 第一帶線 2 2 4 b 第二螺旋狀部分 2 2 8 第三帶線 214a〜214e第一至第五介電基板 2 2 0 連接電極 2 24a 第一螺旋狀部分 2 2 6 第二帶線548874 V. Description of the invention (7) Figure 7 uses the equivalent circuit of Figure 4a to make use of the principle of the LC cavity and the characteristics of the multilayer circuit structure to achieve the purpose of reducing the size. The meandering coupling wire is used for winding. Figure 8a illustrates the measurement results of the input loss and return loss characteristics of the first preferred embodiment of the present invention. Figure 8b illustrates the measurement results of the amplitude and phase error values of the two balanced output chirp signals according to the first preferred embodiment of the present invention. Figure 9a illustrates the measurement results of the input loss and return loss characteristics of the second preferred embodiment of the present invention. Figure 9b illustrates the measurement results of the amplitude and phase error values of the signals of the two balanced output ports in the second preferred embodiment of the present invention. Description of drawing number 2 0 0 Laminated sheet 2 1 6, 2 3 0 Ground electrode 2 2 2 First strip line 2 2 4 b Second spiral portion 2 2 8 Third strip line 214a ~ 214e First to fifth dielectric Substrate 2 2 0 Connection electrode 2 24a First spiral portion 2 2 6 Second strip line
第10頁 548874 五、發明說明(8) 3 0 1 耦合線(含線3 0 1 a及 3 0 2 耦合線(含線3 0 2 a及 3 0 3 傳輸線 3 0 6 帶線 3 1 1 平衡埠 313a、313b 金屬線 3 2 0 最右側的耦合線 3 2 0 a 最右側的耦合線的 3 2 0 b 最右側的耦合線的 3 2 1 最左側的耦合線 3 2 1 a 最左側的搞合線的 3 2 1 b 最左侧的耦合線的 CVQ 電容 線 3 0 1 b ) 線302b) 3 0 4 電容 7 7 7 接地端 3 1 2 a、3 1 2 b 平衡埠 31 4a、314b 帶線 3 2 j 右側的耦合線 第一線部分 第二線部分 3 2 i 左側的耦合線 第一線部分 第二線部分Page 10 548874 V. Description of the invention (8) 3 0 1 Coupling line (including lines 3 0 1 a and 3 0 2 Coupling line (including lines 3 0 2 a and 3 0 3 Transmission line 3 0 6 With line 3 1 1 Balance Port 313a, 313b Metal wire 3 2 0 Right-most coupling line 3 2 0 a Right-most coupling line 3 2 0 b Right-most coupling line 3 2 1 Left-most coupling line 3 2 1 a Left-most engaging 3 2 1 b CVQ capacitor line of the leftmost coupling line 3 0 1 b) line 302b) 3 0 4 capacitor 7 7 7 ground 3 1 2 a, 3 1 2 b balanced port 31 4a, 314b with Line 3 2 j Coupling line on the right First line part Second line part 3 2 i Coupling line on the left First line part Second line part
4 0 1 轉合線(含線4 0 1 a _ 4031〜403m 、 404卜404η 4 1 1 a、4 1 1 b 傳輸線 4 1 3 平衡埠 612a〜612h 圖6a之第一 615a 第一穿孑L 6 2 0 a 第一輸出埠 624a 第一耦合線的第-7 線 4 0 1 b ) 電容 41 2a、41 2b 傳輸線 414a、414b 平衡埠 至第八介電層 6 1 5 b 第二穿孔 6 2 0 b 第二輸出埠 _線部分4 0 1 Turn-over line (including line 4 0 1 a _ 4031 ~ 403m, 404, 404η 4 1 1 a, 4 1 1 b Transmission line 4 1 3 Balance port 612a ~ 612h Figure 1a first 615a first crossing L 6 2 0 a First output port 624a Line -7 of the first coupling line 4 0 1 b) Capacitor 41 2a, 41 2b Transmission line 414a, 414b Balance port to the eighth dielectric layer 6 1 5 b Second perforation 6 2 0 b 2nd output port_line section
第11頁 548874 五、發明說明(9) 6 2 4 b第一耦合線的第二線部分 6 2 6 a 弟-一賴I合線的第' —線部分 6 2 6 b 弟一搞合線的第二線部分 6 3 0 輸入淳 CP1電容的第一電極部分CP2電容的第二電極部分 642a~642k圖6b之第一至第十—介電層 712a〜712i圖7之第一至第九介電層 7 3 2a、7 3 2b 傳輪線 Π 5 a ! 5 b、7 丄 5 c 穿孔 C P 電容的電極部分 發明之詳細說明 圖3a為根據本發明之LC共振式平衡至非平衡轉換器, 其L C共振腔的第一較佳實施例的等效電路示意圖。如圖3 a 所示,此LC共振腔3 0 0的等效電路基本上由兩節遠小於四 分之一波長的垂直耦合線301 (含線301a及線301b)和3〇2( 含線3 0 2 a及線3 0 2 b )、一節傳輸線3 〇 3及並聯一個電容3 4 所構成。耦合線301中的線30 lb和耦合線3 0 2中的線3〇2b各 有兩端,分別連接至平衡埠和接地端777。由圖3a可看出 ,線3 0 1 b和線3 0 2 b分別藉由兩金屬線3 1 3a和3 1 3b連接至 平衡璋3 1 2 a和3 1 2 b,而金屬線3 1 3 a和3 1 3 b的端點即分別 平衡埠3 1 2 a和3 1 2 b。插入的傳輸線3 0 3的兩端分別藉由兩”Page 11 548874 V. Description of the invention (9) 6 2 4 b The second line part of the first coupling line 6 2 6 a Brother-Ii Lai I line of the first '--line part 6 2 6 b Brother-I line the line The second line part of the input 6 3 0 is the first electrode part of the CP1 capacitor, and the second electrode part of the CP2 capacitor is 642a to 642k. The first to tenth parts of the dielectric layer 712a to 712i of FIG. 7 Dielectric layers 7 3 2a, 7 3 2b Transmission line Π 5 a! 5 b, 7 丄 5 c Detailed description of the electrode part of the perforated CP capacitor Figure 3a is an LC resonant balanced-to-unbalanced converter according to the present invention A schematic diagram of the equivalent circuit of the first preferred embodiment of the LC resonant cavity. As shown in Figure 3a, the equivalent circuit of this LC resonant cavity 3 0 0 basically consists of two vertical coupling lines 301 (including line 301a and line 301b) and 30 (including line 301) which are far less than a quarter wavelength. 3 0 2 a and line 3 0 2 b), a transmission line 3 03 and a capacitor 3 4 connected in parallel. The line 30 lb in the coupling line 301 and the line 302b in the coupling line 302 each have two ends, which are respectively connected to the balanced port and the ground terminal 777. It can be seen from FIG. 3a that the lines 3 0 1 b and 3 0 2 b are respectively connected to the balance 两 3 1 2 a and 3 1 2 b through two metal lines 3 1 3a and 3 1 3b, and the metal line 3 1 The endpoints of 3 a and 3 1 3 b are the balanced ports 3 1 2 a and 3 1 2 b, respectively. The ends of the inserted transmission line 3 0 3 are separated by two "
548874 五、發明說明(ίο) 帶線3 14a和314b連接至耦合線3 01中的線301a和耦合線302 中的線3 0 2 a。非平衡埠31 1為一輸入端,藉由一帶線3 0 6連 接至其中一節耦合線,如3 0 2中的線3 0 2 a。 由於此耦合傳輸線在幾何結構上完全左右對稱於結構 中心點,因此具有很好的相位和振幅的平衡度。甚且,適 當調整耦合線及電容的比例,可使平衡端得到適當的阻抗 匹配。在實際應用上,本實施例中的垂直耦合線可使用對 稱形或非對稱形的結構,插入的傳輸線可以是電容性或是 電感性傳輸線。此傳輸線除了可增加平衡埠的平衡度外, 當平衡埠的阻抗特性為複數型態時,也可以達到匹配非平 衡埠至平衡埠的複數阻抗。此L C共振腔的等效電路可演生 為多節垂直揭合線,和並聯多個電容。 圖3 b為由圖3 a演生的多節垂直搞合線和並聯多個電容 之LC共振腔的等效電路的示意圖,其中,插入在左右兩節 輕合線3 0 1和3 0 2之間的傳輸線的左右兩側各演生多卽的耗 合線,一個虛線方框表示一節编合線,每節輕合線係由一 第一線部分(i i r s t 1 i n e ρ 〇 r t i ο η )和一第二線部分 (second line portion)組成,第一線部分和第二線部分 皆各有兩端。傳輸線3 0 3左側的每節耦合線3 2 i的第一線部 分與其鄰近的耦合線的第一線部分連接,第二線部分與其 鄰近的耦合線的第二線部分連接,傳輸線右側的每節耦合 線3 2 j亦然。非平衡琿3 1 1藉由帶線3 0 6連接至最左側的耦548874 V. Description of the invention (ίο) The strip lines 3 14a and 314b are connected to the line 301a in the coupling line 3 01 and the line 3 0 2 a in the coupling line 302. The unbalanced port 31 1 is an input terminal, and is connected to one of the coupling lines through a strip line 3 06, such as the line 3 2 a in 3 2. Because this coupled transmission line is completely symmetrical about the structure's center point on the geometric structure, it has a good balance of phase and amplitude. Moreover, proper adjustment of the ratio of the coupling line and the capacitor can make the balanced terminal get proper impedance matching. In practical applications, the vertical coupling line in this embodiment may use a symmetrical or asymmetric structure, and the inserted transmission line may be a capacitive or inductive transmission line. In addition to increasing the balance of the balanced port, this transmission line can also match the complex impedance of the unbalanced port to the balanced port when the impedance characteristic of the balanced port is a complex type. The equivalent circuit of this LC resonant cavity can be generated as multiple vertical strip wires, and multiple capacitors connected in parallel. Fig. 3b is a schematic diagram of an equivalent circuit of an LC resonant cavity with multiple sections of vertical coupling lines and a plurality of capacitors connected in parallel derived from Fig. 3a, in which the left and right sections of the light-closing wires 3 0 1 and 3 0 2 are inserted. The left and right sides of the transmission line between the two lines generate a multiplicity of consumable lines. A dashed box represents a braided line. Each light line is composed of a first line (iirst 1 ine ρ 〇 rti ο η) And a second line portion, each of which has two ends. The first line portion of each coupling line 3 2 i on the left side of the transmission line 3 0 3 is connected to the first line portion of the adjacent coupling line, and the second line portion is connected to the second line portion of the adjacent coupling line. The same is true for the node coupling lines 3 2 j. Unbalanced 珲 3 1 1 is connected to the left-most coupler by a cable 3 0 6
第13頁 548874 五、發明說明(ll) i ί3 21的第一線部分3 21 a,此最左側的耦合線3 21的第二 U。卩分j21b的左端則連接至接地端777。最左側的耦合線 綠μ的第一線部分3 2 1 a的左端和最右側的耦合線3 2 0的第一 ^^/^“’右端並聯多個電容匕义/最右側的搞合線 、弟一線σ卩分3 2 〇 b的右端則連接至接地端了 γ 7。 可以ί f本t,,適度增大此等效電路的並聯電容值,更 一半移至上方=ΐ尺寸。甚且可將左右對稱架構的其中 輪^ /成上下對稱架構,電容移至垂直耦合谓Page 13 548874 V. Description of the invention (ll) i The first line part 3 21 a of 3 21 is the second U of the leftmost coupling line 3 21. The left end of the sub-j21b is connected to the ground terminal 777. The left end of the leftmost coupling line green μ's first line portion 3 2 1 a and the rightmost coupling line 3 2 0's first ^^ / ^ "'right end is connected in parallel with a plurality of capacitors / rightmost engagement line The right end of the first line of σ 卩 points 3 2 〇b is connected to the ground terminal γ 7. You can reduce f, t, increase the parallel capacitor value of this equivalent circuit moderately, and move half of it to the top = ΐ size. In addition, one of the left and right symmetrical structures can be turned into an up and down symmetrical structure, and the capacitor can be moved to a vertical coupling.
芦7爲a ^疋下方,平衡端採用穿孔方式至另一介質 二,層久以對稱中央方式均勻向上下延伸 層電路架構的特點,來告,女φ5 j用夕 羋你4絲4念- 木&成大中田縮小兀件尺寸的平衡至非 千衡式轉換為,將於圖6a〜圖讣中詳細說明。 本f明之以共振式平衡至非平衡轉換器, :干佳實施例的等效電路示意圖。如圖4a 所不’此LC,、振腔4〇〇的等效電路基 線401 (含線40 la和線401h、生由、,=由即重直祸合 琢4u丄b),其中亚聯一個雷交4in、八μ 串接於線401a兩端的傳輪衅41 “ 1k個兒^4ϋ3刀別 ,Λ , x j 1寻铷綠4 1 1 a和4 1 1 b,及並聯一個带^ 〇 „ VV'k ^ 12a ^412b ^ ^ 埠414a和414b連接::別;J接;接地端。與兩平衡 線4 12a和4 12b。 友長的兩傳輪Lu 7 is below a ^ 疋, the balanced end uses perforation to another dielectric layer 2. The layer is long and symmetrically extends the structure of the circuit structure up and down in a symmetrical and central way. Here comes the female φ5 j. Wood & Narita Nakata's reduction of the size of the components from the balance to the non-thousand-balance type conversion will be described in detail in Figures 6a to 讣. This document uses a resonant balanced-to-unbalanced converter to illustrate the equivalent circuit diagram of the dry-best embodiment. As shown in Figure 4a, this LC, the equivalent circuit baseline 401 of the cavity 400 (including the line 40la and line 401h, origin ,, ==========================) A thunderbolt 4in, eight μs are connected in series at the ends of line 401a. 41 "1k ^ 4ϋ3 blades, Λ, xj 1finding green 4 1 1 a and 4 1 1 b, and a belt in parallel ^^ VV'k ^ 12a ^ 412b ^ ^ Ports 414a and 414b are connected: Do not; J is connected; ground terminal. With two balanced lines 4 12a and 4 12b. Friend's Two Passes
548874 五、發明說明(12) 此結構充分利用L C共振腔原理,因而達到尺寸縮小的 目的。更可藉由適當設計兩傳輸線412a和412b長度而獲得 平衡端的阻抗匹配及振幅與相位平衡度。同樣地,在實際 應用上,本實施例中的垂直耦合線可使用對稱形或非對稱 形的結構,此L C共振腔的等效電路可演生為多節垂直耦合 線^和分別並聯多個電容。 圖4 b係將圖4 a演生為多節垂直耦合線的等效電路的示 意圖。參看圖4 b,除了一節耦合線4 0 1外,演生出多節的 耦合線,其他電性連結方式與圖4a相同,不再重述。圖4b 中,一個虛線方框表示一節轉合線,每節搞合線係由一第 一線部分(first line portion)和一第二線部分(second 1 i n e ρ 〇 r t i ο η )組成,第一線部分和第二線部分皆各有兩 端。每節耦合線的第一線部分與其鄰近的耦合線的第一線 部分連接,第二線部分與其鄰近的耦合線的第二線部分連 接。此等效電路基本上由多節垂直耦合線,其中並聯多個 電容4 0 3 1〜4 0 3 m、分別串接於最左耦合線和最右側耦合線 之第一線部分左右兩端的傳輸線411a和411b,及並聯多個 電容4 0 4 1〜4 0 4 η、分別串接於最左耦合線和最右側耦合線 之第二線部分左右兩端的傳輸線4 12a和4 12b所構成。再利 用多層電路架構,將電容移至垂直耦合傳輸線的上方或是 下方,可大幅縮小元件尺寸,將於圖7中詳細說明。548874 V. Description of the invention (12) This structure makes full use of the principle of the LC resonant cavity, thus achieving the purpose of size reduction. The impedance matching and the amplitude and phase balance of the balanced end can be obtained by appropriately designing the lengths of the two transmission lines 412a and 412b. Similarly, in practical applications, the vertical coupling line in this embodiment may use a symmetrical or asymmetrical structure, and the equivalent circuit of this LC resonant cavity may be developed into a plurality of vertical coupling lines ^ and a plurality of parallel coupling lines, respectively. capacitance. Figure 4b is a schematic diagram of an equivalent circuit derived from Figure 4a as a multi-section vertical coupling line. Referring to FIG. 4b, except for one coupling line 401, a plurality of coupling lines are generated. Other electrical connection methods are the same as those in FIG. 4a, and will not be repeated. In FIG. 4b, a dotted box represents a turn line, and each turn line is composed of a first line portion and a second line portion (second 1 ine ρ ο ο ο η). Each of the first line portion and the second line portion has two ends. The first line portion of the coupling line of each section is connected to the first line portion of the adjacent coupling line, and the second line portion is connected to the second line portion of the adjacent coupling line. This equivalent circuit basically consists of a plurality of vertical coupling lines, in which a plurality of capacitors 4 0 3 1 to 4 0 3 m are connected in parallel, and the transmission lines are connected in series to the left and right ends of the first line portion of the leftmost coupling line and the rightmost coupling line, respectively. 411a and 411b, and a plurality of capacitors 4 0 4 1 to 4 0 4 η in parallel, and transmission lines 4 12a and 4 12b connected in series to the left and right ends of the second line portion of the leftmost coupling line and the rightmost coupling line, respectively. Using a multilayer circuit architecture, moving the capacitor above or below the vertically coupled transmission line can greatly reduce the component size, which will be explained in detail in Figure 7.
第15頁 548874 五、發明說明(13) 根據本發明,耦合線繞線的方式有多種曲折延伸的實 施方式。圖5 a〜圖5 d為根據本發明之耦合線繞線的四種實 施方式,分別為螺旋式、曲折式、弦波式和鋸齒式。利用 此曲折延伸方式,本發明得以縮短元件平面的尺寸。 圖6 a〜圖6 b係結合圖3 a和圖3b之等效電路,並利用多 層電路架構的特點來增大此等效電路的並聯電容值,其中 兩節垂直耦合線並聯一個電容,並使用螺旋式的耦合線繞 線的方式。圖6 a中,電容置於垂直轉合線的左側。圖6 b 中,電容置於垂直耦合線的下方。為了增加垂直耦合線的 長度,以增大轉換器的操作頻寬,在圖6 a和圖6 b中,皆利 用穿孔方式將平衡埠移至另一層。 圖6a中,此平衡至非平衡轉換器包含第一至第八介電 層(dielectric layer)612a〜612h,此八層介電層被往上 堆疊而成。第一和第八之上下最外兩層612a和612h的主要 表面(main surface)分別為第一和第二接地面(ground p 1 a n e ),即斜線區域,此接地面可使用金屬片材質。在第 二介電層612b的一主要表面上形成一第一穿孔(via-hole) 615a和一第一輸出埠620a,此第一輸出淳620a的範圍 (range)由主要表面的中心朝向右上側邊緣。在第七介電 層612g的一主要表面上形成一第二穿孔615b和一第二輸出 淳620b,第二輸出埠620b的範圍(range)由主要表面的中 心朝向左上側邊緣。在第三介電層6 1 2 c的一主要表面上形Page 15 548874 V. Description of the invention (13) According to the present invention, there are various zigzag extensions of the winding way of the coupling wire. Figures 5a to 5d show four implementations of the coupling wire winding according to the present invention, which are spiral, zigzag, sine wave and sawtooth. With this meandering extension method, the present invention can shorten the size of the element plane. Figure 6a to Figure 6b combine the equivalent circuits of Figures 3a and 3b, and use the characteristics of the multilayer circuit architecture to increase the parallel capacitor value of this equivalent circuit, in which two vertical coupling lines connect one capacitor in parallel, and Winding with a spiral coupling wire. In Figure 6a, the capacitor is placed to the left of the vertical turn. In Figure 6b, the capacitor is placed below the vertical coupling line. In order to increase the length of the vertical coupling line to increase the operating bandwidth of the converter, in Figure 6a and Figure 6b, the balanced port is moved to another layer by means of perforation. In FIG. 6a, the balanced-to-unbalanced converter includes first to eighth dielectric layers (612a to 612h), and the eight dielectric layers are stacked upward. The main surfaces of the upper and lower outermost layers 612a and 612h of the first and eighth are the first and second ground planes (ground p 1 a n e), respectively, which are oblique lines. The ground planes can be made of sheet metal. A first via-hole 615a and a first output port 620a are formed on a main surface of the second dielectric layer 612b. The range of the first output 620a is from the center of the main surface toward the upper right side. edge. A second perforation 615b and a second output port 620b are formed on a main surface of the seventh dielectric layer 612g. The range of the second output port 620b is from the center of the main surface toward the upper left edge. Shaped on a major surface of the third dielectric layer 6 1 2 c
第16頁 548874 五、發明說明(14) 成一第一轉合線的第 範圍由主要表面的中 側。在第六介電層6 1 的第一線部分6 2 6 a, 的中心以螺旋式繞線 層612d的一主要表面 62 4b、電容的第一電 部分6 2 4 b的範圍由主 要表面的右側,此電 線(由第一線部分6 2 4 第五介電層612e的一 線部分6 2 6 b和電容的 626b的範圍由主要表 面的右侧,此電容的 第一線部分6 2 6 a和第 應用上,電容也可以 一線部分6 24 a,此第一線部分6 2 4a的 心以螺旋式繞線形成在主要表面的右 2f的一主要表面上形成一第二耦合線 此第一線部分6 2 6 a的範圍由主要表面 形成在主要表面的右側。在弟四介電 上形成一第一耦合線的第二線部分 極部分CPi和一輸入埠6 3 0,此第二線 要表面的中心以螺旋式繞線形成在主 容的第一電極部分CPi置於第一耦合 a和第二線部分6 2 4 b組成)的左側。在 主要表面上形成一第二耦合線的第二 第二電極部分CP2,此第二線部分 面的中心以螺旋式繞線形成在主要表 第二電極部分CP2置於第二耦合線(由 二線部分6 2 6 b組成)的左側。在實際 置於垂直耦合線的右側。 圖6b中,由於電容的兩個電極部分C Pi *CP2係置於垂 直耦合線的下方,故較圖6a的結構多出三層介電層,共十 一層介電層642a〜642k。多出的三層介電層642h〜642 j係堆 疊在圖6a中的第七介電層(含第二輸出埠)與第八介電層 (第二接地層)之間。介電層6 4 2 h係一備有兩穿孔的第三接 地層。在介電層642i的一主要表面上形成電容的電極部分 CP。在介電層642 j的一主要表面上形成電容的第二電極部Page 16 548874 V. Description of the invention (14) The first range of the first turn line is from the middle of the main surface. At the center of the first wire portion 6 2 6 a of the sixth dielectric layer 6 1, a main surface 62 4 b of the spiral winding layer 612 d is formed, and the range of the first electric portion 6 2 4 b of the capacitor is defined by the main surface. On the right side, the range of the wire (from the first wire portion 6 2 4 to the first wire portion 6 2 6 b of the fifth dielectric layer 612e and the capacitor 626b from the right side of the main surface, the first wire portion of this capacitor 6 2 6 a In the first application, the capacitor can also be a line portion 6 24 a. The core of the first line portion 6 2 4a is spirally wound on a main surface on the right 2f of the main surface to form a second coupling line. This first The range of the line portion 6 2 6 a is formed by the main surface on the right side of the main surface. A second line portion pole portion CPi of a first coupling line and an input port 6 3 0 are formed on the Si dielectric, and this second line The center of the main surface is formed by spiral winding on the left side of the first electrode portion CPi of the main capacitor (composed of the first coupling a and the second wire portion 6 2 4 b). A second second electrode portion CP2 of a second coupling line is formed on the main surface, and the center of the second line portion surface is formed by spiral winding on the main surface. The second electrode portion CP2 is placed on the second coupling line (by two The line part 6 2 6 b is composed of the left side. Actually placed to the right of the vertical coupling line. In Fig. 6b, since the two electrode portions C Pi * CP2 of the capacitor are placed below the vertical coupling line, there are three more dielectric layers than the structure of Fig. 6a, and there are eleven dielectric layers 642a to 642k. The extra three dielectric layers 642h ~ 642j are stacked between the seventh dielectric layer (including the second output port) and the eighth dielectric layer (the second ground layer) in FIG. 6a. The dielectric layer 64 2 h is a third ground layer provided with two perforations. An electrode portion CP of a capacitor is formed on a major surface of the dielectric layer 642i. A capacitor second electrode portion is formed on a major surface of the dielectric layer 642 j
第17頁 548874 五、發明說明(15) 分(:2。而螺旋式的第一耦合線和第二耦合線的繞線範圍也 可以自主要表面的中心由内向外擴展到整個主要表面上。 在實際應用上,電容也可以置於垂直耦合線的上方。Page 17 548874 V. Description of the invention (15) points (: 2). The winding range of the spiral first coupling line and the second coupling line can also be extended from the center of the main surface from the inside to the entire main surface. In practical applications, the capacitor can also be placed above the vertical coupling line.
圖7係結合圖4 a和圖4 b之等效電路利用L C共振腔原理 及多層電路架構的特點’來達到尺寸縮小的目的’其中弟 一電容的電極部分CP置於一節耦合線的上方,第二電容的 第一電極部分CPi和第二電容的第二電極部分CP2置於此節 轉合線的下方,並且使用曲折式的福合線繞線的方式,平 衡埠也是利用穿孔方式移至另一介電層。根據本發明,與 非平衡端連接的為等效四分之一波長傳輸線之LC共振腔, 而與平衡端接連的則為等效二分之一波長傳輸線之L C共振 腔0Fig. 7 combines the equivalent circuit of Fig. 4a and Fig. 4b with the principle of the LC cavity and the characteristics of the multilayer circuit architecture to achieve the purpose of size reduction. The electrode part CP of the capacitor is placed above a coupling line. The first electrode portion CPi of the second capacitor and the second electrode portion CP2 of the second capacitor are placed below the turning line of this node, and a zigzag Fuhe wire is used for winding. The balance port is also moved to Another dielectric layer. According to the present invention, the LC resonant cavity of the equivalent quarter-wavelength transmission line connected to the unbalanced end, and the LC resonant cavity of the equivalent half-wavelength transmission line connected to the balanced end.
圖7中,此平衡至非平衡轉換器包含第一至第九介電 層712a〜712i ,此九層介電層被往上堆疊而成。第一和第 九之上下最外兩層712a和712i的主要表面分別為第一和第 二接地面’即斜線區域。弟^一電容的電極部分CP、弟二電 容的第一電極部分CPi和第二電容的第二電極部分CP2分別 形成在第二介電層712b、第七介電層712g和第八介電層 712h的一主要表面上。一節耦合線的第一線部分724a和第 二線部分7 2 4b分別形成在第四介電層7 1 2 d和第五介電層 712e的一主要表面上,且傳輸線732a、732b和傳輸線746 分別形成在第五介電層712e和第二介電層712b的主要表面In FIG. 7, the balanced-to-unbalanced converter includes first to ninth dielectric layers 712a to 712i, and the nine dielectric layers are stacked upward. The major surfaces of the first and ninth upper and lower outermost layers 712a and 712i are the first and second ground planes', i.e., the oblique line regions. The electrode portion CP of the first capacitor, the first electrode portion CPi of the second capacitor, and the second electrode portion CP2 of the second capacitor are formed on the second dielectric layer 712b, the seventh dielectric layer 712g, and the eighth dielectric layer, respectively. 712h on a major surface. The first line portion 724a and the second line portion 7 2 4b of a coupling line are formed on a main surface of the fourth dielectric layer 7 1 2 d and the fifth dielectric layer 712 e, respectively, and the transmission lines 732 a, 732 b and the transmission line 746 Formed on the main surfaces of the fifth dielectric layer 712e and the second dielectric layer 712b, respectively
第18頁 548874 五、發明說明(16) " 一 - 應用上,圖“中的傳輸線4Ub可以省略。在電 =^ ,二、,、之間加公一接地層,圖γ中加入第三和第四接 在^分別為第三介電層712c和第六介電層712f,且 孔7 1 5 b與7 1 5 C。 、不)分別形成一個穿孔7 1 5 a和兩個穿 根據本發明,以 使用低耗損金屬材w 所述之搞合線、傳輸線或接地層可 (Au)或鎳(Ni)等。貝 如銀(Ag)、金巴(Pd)、銅(Cu)、金 在陶瓷介電& 4 GHz的設計環境/數 多層電路架構來 本發 等於7· 8和中心頻率fQ等於2. 44 明分別以圖3和圖4所演生的兩種 一"不傅氓分4 、π /刀、別从圚ύ和園4所演生的兩種 器?運作致益。兩發明之LC共振式平衡至非平衡轉換 S11 I及鉍X α。 硬木構 及輪入 於圖8a和圖ga GHz 之返回損耗(return loss) ^ 其中,· 1和I S” I的特性量測結果分別示 π杜/抑量測的輕率笳问構軸為轉換器的操作頻率(單位為 幅,(早位為dB)。★ f為2〜3GHz,縱軸為S參數量測的振 耗 )21Page 18 548874 V. Description of the invention (16) " I-Application, the transmission line 4Ub in the figure "can be omitted. Add a common ground plane between the electric = ^, two ,,,, and add a third in the figure And the fourth connection is the third dielectric layer 712c and the sixth dielectric layer 712f, respectively, and the holes 7 1 5 b and 7 1 5 C. (No) form a through hole 7 1 5 a and two through holes respectively In the present invention, the coupling wire, transmission line, or ground layer (Au) or nickel (Ni), etc. described in the use of the low-loss metal material w can be used, such as silver (Ag), gold bar (Pd), copper (Cu), Kim ’s design environment for ceramic dielectrics & 4 GHz / multi-layer circuit architecture is inherently equal to 7.8 and the center frequency fQ is equal to 2. 44. The two types derived from Figure 3 and Figure 4 respectively are not Fu Manu divided into two, π / knife, two kinds of devices derived from 圚 ύ and Yuan 4? Operation benefits. The two inventions of LC resonance balance to unbalance conversion S11 I and bismuth X α. Hardwood structure and wheel The return loss in Figure 8a and ga GHz ^ Among them, the characteristic measurement results of · 1 and IS ”I show the rashness of the π Du / Suppression measurement respectively. The configuration axis is the operation of the converter Rate (in the web, (B bits dB). ★ f is 2~3GHz, the vertical axis represents the S parameter measurement transducer consumption) 21
、,六 a V u ^ 。在古 v。d u U乙,狄早田兩ύ爹敦重冽的派 ^ ^種波(電壓波知電路中,因為量測到的電壓和電 二徊2ί交’利用s參赵Γ後波)’其量測到的值會因位置不 =i聯結的傳的福述一個網路時,必須預先訂出 2 Z二34〜2.5αί的特性阻抗。返回損耗在設計的頻寬 埠阻抗匹配,的.·Ηζ,t小於_1〇dB 因此 能量 即表示非平衡輸入 耗很小。而s21和S31代表輸入損,, six a V u ^. In ancient v. du U B, Di Haotian ’s two daddy ’s serious ^ ^ kind of wave (in the voltage wave knowing circuit, because the measured voltage and electricity are 2) “crossing using the s reference Zhao Γ wave” and its measurement The value obtained will be the characteristic impedance of 2 Z = 34 ~ 2.5αί when a network of relays is connected due to the position not equal to i. The return loss matches the impedance of the designed bandwidth port. ΗΗζ, t is less than -10dB, so energy means that the unbalanced input loss is small. And s21 and S31 represent input losses
548874 五、發明說明(17) 耗,在設定的頻寬中因能量平均分配在二埠,再加上材料 耗損因素,所以大小值小於-3d B,-3 dB表示能量因均分而 降低二分之一,即平衡輸出埠接受大部分能量。 圖8 b和圖9 b分別說明第一種架構和第二種架構之兩平 衡輸出埠信號的振幅和相位的誤差值的量測結果,其中, 橫座標代表轉換器的操作頻率(單位為G Η z ),縱座標分別 代表信號的振幅和相位的誤差值。從圖8和圖9中可窺知, 在操作頻寬為2 0 0 MHz下,其信號之振幅差在2dB以内,相 位差亦在5度以内。548874 V. Description of the invention (17) Consumption, because the energy is evenly distributed in the second port in the set bandwidth, plus the material loss factor, the size value is less than -3d B, -3 dB means that the energy is reduced by 2 One part, the balanced output port receives most of the energy. Figure 8b and Figure 9b illustrate the measurement results of the amplitude and phase error values of the two balanced output port signals of the first architecture and the second architecture, respectively, where the horizontal coordinate represents the operating frequency of the converter (the unit is G Η z), the ordinates represent the error values of the amplitude and phase of the signal, respectively. It can be seen from Fig. 8 and Fig. 9 that at an operating bandwidth of 200 MHz, the amplitude difference of the signal is within 2dB and the phase difference is within 5 degrees.
綜上可知,本發明之LC共振式平衡至非平衡轉換器綜 合LC共振腔、多層化,和曲折耦合傳輸線的方式,不僅克 服傳統平衡至非平衡轉換器的缺點,且達到大幅縮小元件 尺寸、操作頻寬大,而且可使用低介電材料來製成等多項 優點。所以降低成本,且提高元件製作的穩定度。適合製 作成微小型晶片大小元件,能滿足現今通訊設備具備輕、 薄、短、小特性的要求。可應用在無線區域網路及個人行 動通訊設備上,極具市場經濟效益。In summary, the LC resonant balanced-to-unbalanced converter integrated LC resonant cavity, multilayering, and meandering coupling transmission line method of the present invention not only overcomes the shortcomings of the traditional balanced-to-unbalanced converter, but also achieves a significant reduction in component size, It has a large operating bandwidth and can be made of low dielectric materials. Therefore, the cost is reduced, and the stability of component manufacturing is improved. It is suitable for making micro and small chip size components, which can meet the requirements of light, thin, short and small features of today's communication equipment. It can be applied to wireless local area network and personal mobile communication equipment, which has great market economic benefits.
唯,以上所述者,僅為本發明之較佳實施例而已,當 不能以此限定本發明實施之範圍。即大凡依本發明申請專 利範圍所作之均等變化與修飾,皆應仍屬本發明專利涵蓋 之範圍内。However, the above are only preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited by this. That is, all equal changes and modifications made in accordance with the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention.
第20頁 548874 圖式簡單說明Page 548874 Simple illustration
第21頁Page 21
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