TWI552426B - Adjustable output power ratio compared to branch coupler - Google Patents
Adjustable output power ratio compared to branch coupler Download PDFInfo
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Description
本發明係有關一種可調整輸出功率比之枝幹耦合器，尤指一種可適用於不同中心頻率之微波系統的枝幹耦合器技術。 The present invention relates to a branch coupler capable of adjusting an output power ratio, and more particularly to a branch coupler technology applicable to microwave systems of different center frequencies.
由於高頻微波電路逐漸受到矚目，所以在電子產業應用上的需求也愈來愈多，連帶使得積體電路的應用及設計趨勢也隨之複雜化，除了要考慮到電路層面的問題，製程方面的設計也愈加困難。科技隨時間的演進，近年來，無線通訊已成為現代電子科技發展的重點趨勢，不管是在數位電視系統、全球衛星系統、或是手機通訊系統，人們生活對於無線資訊傳輸已密不可分，枝幹耦合器(如參考文獻[1])在上述系統中也是扮演著一個重要的角色，枝幹耦合器的種類很多，其功能不外乎功率分配(如參考文獻[2][3])或是功率合成使用，如枝幹耦合器(branch line coupler)、環形耦合器(ratrace coupler)、藍吉耦合器(lange coupler)(如參考文獻[4][5])。其中，又以枝幹耦合器使用最為普遍，其電路輸出埠|S21|與耦合埠|S31|之輸出功率比大多設計在半功率點(-3dB)，兩輸出訊號相位相差90度，而輸入埠|S11|與隔離埠|S41|且能達到-15dB以下，為因應不同環境的使用需求。 As high-frequency microwave circuits are gaining attention, there is a growing demand for applications in the electronics industry, which in turn complicates the application and design trends of integrated circuits, in addition to circuit-level issues and process aspects. The design is also more difficult. The evolution of technology over time, in recent years, wireless communication has become the focus of the development of modern electronic technology, whether in digital TV systems, global satellite systems, or mobile communication systems, people's lives are inseparable for wireless information transmission, branches Couplers (such as Ref. [1]) also play an important role in the above systems. There are many types of branch couplers, and their functions are nothing more than power allocation (eg, [2] [3]) or Power synthesis is used, such as a branch line coupler, a ratrace coupler, and a lange coupler (see Ref. [4] [5]). Among them, the branch coupler is most commonly used. The output power ratio of the circuit output 埠|S21| and the coupled 埠|S31| is mostly designed at half power point (-3dB), and the two output signals are 90 degrees out of phase, and the input is埠|S11| and isolation 埠|S41| and can reach below -15dB, in response to the needs of different environments.
此外，枝幹耦合器的幾何結構有高度的對稱性，因任何一個端埠均可作為輸入埠，輸出的兩個端埠位於輸入埠的另一側，與輸入埠同一側的另一個端埠是隔離埠，如此的對稱性可由散射係數看出。當所有 的端埠均匹配，進入輸入埠的功率會等分到另一側的輸出埠，沒有任何的功率會傳到隔離埠。雖然習知枝幹耦合器可以提供一個良好輸入輸出阻抗匹配的能力以及提供等功率分配與90度相位差的功效；惟，習知枝幹耦合器並無調整功率比之機能設置，故無法適用於不同中心頻率的微波系統，由於支援性較低，所以會有電路系統之建置成本增加的缺失產生。 In addition, the geometry of the branch coupler has a high degree of symmetry, since either end can be used as the input port, and the two ends of the output are located on the other side of the input port, the other end on the same side as the input port. It is isolated, and such symmetry can be seen by the scattering coefficient. When all The end turns are matched, and the power entering the input 会 is equally divided into the output 另一 on the other side, and no power is transmitted to the 埠. Although the conventional branch coupler can provide a good input and output impedance matching capability and provide equal power distribution and 90 degree phase difference; however, the conventional branch coupler does not have the function of adjusting the power ratio, so it cannot be applied to different In the microwave system of the center frequency, since the support is low, there is a shortage of the increase in the cost of the construction of the circuit system.
依據目前所知，尚未有可以調整輸出功率比以應用於不同中心頻率微波系統之枝幹耦合器的專利或是論文被提出，加上基於電子產業的迫切需求下，本發明創作人等乃經不斷的努力研發之下，終於研發出一套有別於上述文獻之技術概念的本發明。 As far as is known, there are no patents or papers that can adjust the output power ratio to be applied to the branch couplers of microwave systems with different center frequencies, and the creators of the present invention are based on the urgent needs of the electronics industry. Under continuous efforts, R&D has finally developed a set of inventions that differ from the technical concepts of the above documents.
本發明主要目的，在於提供一種可調整輸出功率比之枝幹耦合器，主要是以傳統的1：2不等分枝幹耦合器為架構，將兩端之傳輸線以T型等效加入可調式電容，僅需改變電容值即可使電路輸出功率比達到1：1至1：3的調整範圍，因而得以達成以一電路實現多種輸出比例的耦合器功效，在系統的建置上是相當的便利，電路僅藉需改變電容值，即可適用多種不同中心頻率的微波系統，因此，除了具備高度的系統支援性之外，並可減少整個系統建置的成本支出。達成上述目的功效所採用之技術手段，係覆設於基板上，包含四段依序垂直環繞呈矩形連接的第一傳輸線、第二傳輸線、第三傳輸線及第四傳輸線。其中，第一傳輸線與第二傳輸線連接處、第二傳輸線與第三傳輸線連接處設、第三傳輸線與第四傳輸線連接處以及第四傳輸線與第一傳輸線連接處皆各自設有向外斜向延伸的延伸段。並於第二傳輸線與第四傳輸線分別電性連一電容。 The main purpose of the present invention is to provide a branching coupler with adjustable output power ratio, which is mainly based on a conventional 1:2 unequal branching coupler, and the transmission lines at both ends are added to the adjustable T-type equivalent. Capacitor, only need to change the capacitance value to make the circuit output power ratio reach the adjustment range of 1:1 to 1:3, thus achieving the coupler function of achieving multiple output ratios in one circuit, which is equivalent in the system construction. Convenience, the circuit can be applied to a variety of microwave systems with different center frequencies only by changing the capacitance value. Therefore, in addition to high system support, the cost of the entire system can be reduced. The technical means for achieving the above-mentioned purpose is to cover the substrate, and comprises four segments of a first transmission line, a second transmission line, a third transmission line and a fourth transmission line which are vertically connected in a rectangular shape. Wherein, the first transmission line and the second transmission line connection, the second transmission line and the third transmission line connection, the third transmission line and the fourth transmission line connection, and the fourth transmission line and the first transmission line connection are respectively provided with an outward oblique direction Extended extension. And electrically connecting a capacitor to the second transmission line and the fourth transmission line.
10‧‧‧基板 10‧‧‧Substrate
20‧‧‧傳輸線組 20‧‧‧ Transmission line group
21‧‧‧第一傳輸線 21‧‧‧First transmission line
22‧‧‧第二傳輸線 22‧‧‧second transmission line
23‧‧‧第三傳輸線 23‧‧‧ third transmission line
25‧‧‧第一導電區塊 25‧‧‧First conductive block
26‧‧‧第二導電區塊 26‧‧‧Second conductive block
24‧‧‧第四傳輸線 24‧‧‧fourth transmission line
30‧‧‧延伸段 30‧‧‧Extension
31a、31b、31c、31d‧‧‧三角形段 31a, 31b, 31c, 31d‧‧‧ triangle segments
32a、32b、32c、32d‧‧‧長矩形段 32a, 32b, 32c, 32d‧‧‧ long rectangular segments
40‧‧‧第一訊號埠 40‧‧‧First signal埠
41‧‧‧第二訊號埠 41‧‧‧Second signal埠
42‧‧‧第三訊號埠 42‧‧‧ Third signal埠
43‧‧‧第四訊號埠 43‧‧‧fourth signal埠
C1‧‧‧電容 C 1 ‧‧‧ capacitor
圖1係本發明耦合器等效電路示意圖。 1 is a schematic diagram of an equivalent circuit of a coupler of the present invention.
圖2係本發明T型等效傳輸線的等效電路示意圖。 2 is a schematic diagram showing an equivalent circuit of a T-type equivalent transmission line of the present invention.
圖3係本發明電路結構示意圖。 3 is a schematic view showing the circuit structure of the present invention.
圖4係本發明實體電路結構示意圖。。 4 is a schematic structural view of a physical circuit of the present invention. .
圖5a係本發明功率比為1：2之模擬與實測的頻率響應示意圖。 Figure 5a is a schematic diagram of the frequency response of the simulated and measured power ratio of the present invention with a power ratio of 1:2.
圖5b係本發明功率比由1：1調整至1：2模擬與實測的結果示意圖。 Fig. 5b is a schematic diagram showing the results of the simulation and actual measurement of the power ratio of the present invention from 1:1 to 1:2.
圖6a係本發明功率比為1：1之模擬與實測的對照示意圖。 Fig. 6a is a schematic diagram showing the comparison between the simulation and the actual measurement of the power ratio of the present invention of 1:1.
圖6b係本發明功率比由1：2調整至1：1的模擬與實測的結果示意圖。 Fig. 6b is a schematic diagram showing the results of simulation and actual measurement of the power ratio of the present invention adjusted from 1:2 to 1:1.
圖7a係本發明功率比為1：3之模擬與實測的對照示意圖。 Figure 7a is a graphical representation of the simulation and actual measurement of the power ratio of the present invention of 1:3.
圖7b係本發明功率比由1：2調整至1：3的模擬與實測的結果示意圖。 Fig. 7b is a schematic diagram showing the results of simulation and actual measurement of the power ratio of the present invention adjusted from 1:2 to 1:3.
本發明主要是一種可調功率比的枝幹耦合器，電路是以傳統式1：2不等分枝幹耦合器為架構，並結合傳輸線T型等效，將耦合器之兩端傳輸線由兩組傳輸線與一可調式電容取代。電路藉由調整電容值大小，可將原輸出功率比為1：2耦合器之輸出功率比附有更多的功率選擇，經由電磁模擬軟體證實，於工作頻率上，其輸出功率比可適用於1：1至1：3之系統，電路係以雕刻機實現，最後經網路分析儀量測，於工作頻段之模擬數據與實作確實有良好電氣特性。由於本發明的可調結構設計可適用於不同中心頻率的微波系統，故本發明具備高度支援性、製作簡易，且能大幅地降低系統建置的成本支出。 The invention is mainly a branching coupler with adjustable power ratio. The circuit is based on a traditional 1:2 unequal branching coupler, and combined with a T-type equivalent of a transmission line, the transmission line at both ends of the coupler is composed of two The group transmission line is replaced with a tunable capacitor. By adjusting the value of the capacitor, the output power ratio of the original output power ratio of the 1:2 coupler can be more power-selected. It is confirmed by the electromagnetic simulation software that the output power ratio can be applied to the operating frequency. : 1 to 1:3 system, the circuit is realized by engraving machine, and finally measured by network analyzer, the simulation data and implementation in the working frequency band do have good electrical characteristics. Since the adjustable structure design of the present invention can be applied to microwave systems of different center frequencies, the present invention is highly supportive, easy to manufacture, and can greatly reduce the cost of system construction.
請配合參看圖3、4所示，為達成本發明主要目的之實施例，係包含一基板10，及一以印刷或蝕刻方式成型於基板10上的傳 輸線組20。上述傳輸線組20包含四段依序垂直環繞呈一矩形連接而可分別產生特性阻抗的第一傳輸線21、第二傳輸線22、第三傳輸線23及第四傳輸線24。其中，第一傳輸線21與第二傳輸線22連接處、第二傳輸線22與第三傳輸線23連接處設、第三傳輸線23與第四傳輸線24連接處以及第四傳輸線24與第一傳輸線21連接處皆各自設有一向外斜向(約45度角)延伸的延伸段30，第二傳輸線22近中段附近的外側設有一第一導電區塊25，第二傳輸線24近中段附近的外側設有一第二導電區塊26，並於第二傳輸線22與第一導電區塊25之間電性連接一電容C1，再於第四傳輸線24與第二導電區塊26電性連接另一電容C1。 3 and 4, in order to achieve the main object of the present invention, a substrate 10 and a transmission line group 20 formed on the substrate 10 by printing or etching are included. The transmission line group 20 includes four first transmission lines 21, a second transmission line 22, a third transmission line 23, and a fourth transmission line 24 which are sequentially vertically wound in a rectangular connection to respectively generate characteristic impedances. Wherein, the first transmission line 21 is connected to the second transmission line 22, the second transmission line 22 is connected to the third transmission line 23, the third transmission line 23 is connected to the fourth transmission line 24, and the fourth transmission line 24 is connected to the first transmission line 21. Each of the second transmission line 22 is provided with a first conductive block 25 on the outer side near the middle portion of the second transmission line 22, and a second conductive line 24 is provided on the outer side near the middle portion of the second transmission line 22. The second conductive block 26 is electrically connected to the capacitor C 1 between the second transmission line 22 and the first conductive block 25, and is electrically connected to the second conductive block 26 to the other capacitor C 1 . .
請參看圖3所示之四個延伸段30，係各自包含一三角形 段31a、31b、31c、31d及一長矩形段32a、32b、32c、32d。其一三角形段31a一邊與第一傳輸線21一端連接，其另一邊則與其一長矩形段32a連接。 其二三角形段31b一邊與第三傳輸線23一端連接，其另一邊則與其二長矩形段32b連接。其三三角形段31c一邊與第三傳輸線23另端連接，其另一邊則與其三長矩形段32c連接。其四三角形段31d一邊與第一傳輸線21另端連接，其另一邊則與其四長矩形段32d連接。再請參看圖4所示之其一長矩形段32a末端接設有一第一訊號埠40(即隔離埠)，其二長矩形段32b末端接設有一第二訊號埠41(即耦合埠)，其三長矩形段32c末端接設有一第三訊號埠42(即輸出埠)，其四長矩形段32d之末端接設有一第四訊號埠43(即輸入埠)。具體而言，其一長矩形段32a、其二長矩形段32b、其三長矩形段32c及其四長矩形段32d的長度L1、L2、L3、L4皆為15mm，寬度W1、W2、W3、W4則皆為6.1mm。 Please refer to the four extensions 30 shown in Figure 3, each containing a triangle Segments 31a, 31b, 31c, 31d and a long rectangular segment 32a, 32b, 32c, 32d. One of the triangular segments 31a is connected to one end of the first transmission line 21, and the other side thereof is connected to a long rectangular section 32a. The two triangular segments 31b are connected to one end of the third transmission line 23, and the other side thereof is connected to the two long rectangular segments 32b. The three triangular segments 31c are connected to the other end of the third transmission line 23, and the other side thereof is connected to the three long rectangular segments 32c. The four triangular segments 31d are connected to the other end of the first transmission line 21, and the other side thereof is connected to the four long rectangular segments 32d. Referring to FIG. 4, a first signal 埠 40 (ie, an isolation 埠) is connected to the end of a long rectangular section 32a, and a second signal 埠 41 (ie, a coupling 埠) is connected to the end of the second rectangular section 32b. A third signal 埠 42 (ie, output 埠) is connected to the end of the three-long rectangular section 32c, and a fourth signal 埠43 (ie, input 埠) is connected to the end of the four-long rectangular section 32d. Specifically, the lengths L1, L2, L3, and L4 of one long rectangular segment 32a, two long rectangular segments 32b, three long rectangular segments 32c, and four long rectangular segments 32d thereof are 15 mm, and widths W1, W2, and W3 are W4 is 6.1mm.
於一種具體的實施例中，上述第一傳輸線21與第三傳 輸線23寬度與長度相等且呈矩形狀，而第二傳輸線22與第四傳輸線24寬度與長度相等而呈細長矩形狀，且第二傳輸線22與第四傳輸線24之寬度小於第一傳輸線21與第三傳輸線23。進一步來說，第一傳輸線21與第三傳輸線23的長度L5、L6皆為43.8mm，寬度W5、W6則皆為8.44mm，第二傳輸線22與第四傳輸線24的長度L7皆為31.4mm，寬度W7則皆為0.75mm。 上述二個電容C1皆為可變電容，其一電容C1一端電性連接於第二傳輸線22的中段附近，其另一端則電性連接第一導電區塊25(即接地端)。其二電容C1一端電性連接於該第四傳輸線24的中段附近，其另一端則電性連接第二導電區塊26(即接地端)，而且二電容C1可調整之電容值介於0.7~1.8pF之間。 In a specific embodiment, the first transmission line 21 and the third transmission line 23 have the same width and length and are rectangular, and the second transmission line 22 and the fourth transmission line 24 have the same width and length and are elongated and rectangular, and the second The widths of the transmission line 22 and the fourth transmission line 24 are smaller than the first transmission line 21 and the third transmission line 23. Further, the lengths L5 and L6 of the first transmission line 21 and the third transmission line 23 are both 43.8 mm, the widths W5 and W6 are both 8.44 mm, and the lengths L7 of the second transmission line 22 and the fourth transmission line 24 are both 31.4 mm. The width W7 is 0.75mm. The two capacitors C 1 are all variable capacitors. One end of the capacitor C 1 is electrically connected to the middle of the second transmission line 22 , and the other end of the capacitor C 1 is electrically connected to the first conductive block 25 (ie, the ground end). The second capacitor C 1 is electrically connected to the middle of the fourth transmission line 24, and the other end is electrically connected to the second conductive block 26 (ie, the ground end), and the capacitance of the two capacitors C 1 can be adjusted. Between 0.7 and 1.8 pF.
本發明電路係以傳統的1：2不等分枝幹耦合器(如參考文 獻[6-9])為架構，兩端之傳輸線以T型等效加入可調式電容(如參考文獻[10])，電路藉由改變電容值使電路輸出功率比能有1：1至1：3的調整性。本電路設計優點是以一電路實現多種輸出比例之耦合器，在系統的建置上是相當便利，電路僅藉由改變電容值，即可適用多種不同中心頻率的微波系統，電路不僅具備高度的系統支援性，能減少整個系統建置的成本支出。 The circuit of the invention is a conventional 1:2 unequal branching coupler (such as reference text) [6-9]) is the architecture, the transmission lines at both ends are added with adjustable capacitance by T-type equivalent (such as reference [10]), and the circuit can change the capacitance value so that the output power ratio of the circuit can be 1:1 to 1. : 3 adjustability. The advantage of this circuit design is that it realizes a coupler with multiple output ratios in one circuit. It is quite convenient in the system construction. The circuit can be applied to a variety of microwave systems with different center frequencies only by changing the capacitance value. The circuit not only has a high degree of height. System support can reduce the cost of the entire system.
本發明電路結構如圖1所示，電路是以傳統1：2枝幹耦
合器為架構，將其電路結構中之兩組傳輸線係以T型等效，至於等效結構則如圖2所示，本發明電路藉由T型等效中的可變電容來改變其輸出埠|S21|與耦合埠|S31|之輸出功率比。因此，必須先求出T型等效與傳輸線關係矩陣，關係式如公式(1)所示：
由上面矩陣式可以求得其等效後阻抗值Zo與B(電容抗
之導納)如式子(2)(3)所示：
給定等效後電氣長度θ o，將原傳輸線阻抗值Z與電氣長度θ，分別帶入公式(2)(3)，即可求得等效後傳輸線阻抗值Zo與電容值。將求得之參數帶入電路中，經由電磁軟體IE3D模擬，選用之基板10(如板材)為FR4(約3.2mm)，並以軟體中的小工具Linegauge轉換元件對應長度，結構經最佳化調整如圖3，電路尺寸如圖所示。其中，其三長矩形段32及其四長矩形段32的長度L1、L2、L3、L4皆為15mm寬度W1、W2、W3、W4皆為6.1mm；第一傳輸線21與第三傳輸線23的長度L5、L6皆為43.8mm，寬度W5、W6皆為8.44mm；該第二傳輸線22與該第四傳輸線24的長度L7皆為31.4mm，寬度W7則皆為0.75mm；至於電容C1則為1.3pF。 Given the equivalent electrical length θ o , the original transmission line impedance value Z and the electrical length θ are respectively brought into the equation (2) (3), and the equivalent transmission line impedance value Zo and the capacitance value can be obtained. The obtained parameters are brought into the circuit and simulated by the electromagnetic software IE3D. The selected substrate 10 (such as a plate) is FR4 (about 3.2 mm), and the structure is optimized by the corresponding length of the line tool of the software tool Linegauge. Adjust as shown in Figure 3, the circuit dimensions are as shown. The lengths L1, L2, L3, and L4 of the three long rectangular segments 32 and the four long rectangular segments 32 are all 15 mm, and the widths W1, W2, W3, and W4 are all 6.1 mm; the first transmission line 21 and the third transmission line 23 are The lengths L5 and L6 are both 43.8 mm, the widths W5 and W6 are all 8.44 mm; the lengths L7 of the second transmission line 22 and the fourth transmission line 24 are both 31.4 mm, and the width W7 is 0.75 mm; as for the capacitor C1, 1.3pF.
本發明電路經模擬後，確實可以符合當初預期的結果，因此，可將電路輸出至雕刻機加工，製作實體電路並量測結果。電路經雕刻機加工後之成品如圖4所示，並由Anritsu-MS2034A網路分析儀量測，與模擬結果進行比較，得IE3D與實體電路頻率響應如圖5(a)、(b)所示，量測頻率由0到4GHz，大小由0至-40dB，於工作頻段(fo=0.925GHz)|S11|與|S41|皆在-15dB以下，輸出埠|S21|與耦合埠|S31|的輸出功率比為2：1，圖5(b)中，|S21|與|S31|之相位差為90度。有此良好特性後，改變圖1中電路的電容 C1的電容值，由1.3pF調整至1.8pF，於此，即可達到輸出功率比為1：1之特性，再由網路分析儀量測得IE3D與實體電路頻率響應如圖6(a)、(b)，量測頻率由0到4GHz，大小由0至-40dB，於工作頻段其輸入埠之散射係數|S11|與隔離埠之散射係數|S41|皆在-15dB以下，輸出埠與耦合埠兩端埠之輸出功率比|S21|與|S31|為1：1，圖6(b)中，|S21|與|S31|之相位差為90度，上述模擬與量測結果確實與預期相當接近。最後再次改變圖1中電路C1的電容值，由1.8pF調整至0.7pF，達到輸出功率比為3：1之特性，再由網路分析儀量測得IE3D與實體電路頻率響應如圖6(a)、(b)，量測頻率由0到4GHz，大小由0至-40dB，於工作頻段其|S11|與|S41|皆在-15dB以下，兩端埠之輸出功率比|S21|與|S31|為3：1，圖7(b)中，|S21|與|S31|之相位差為90度。由上述設計與模擬結果，證實本發明確實可以以一枝幹耦合器，藉由調整可變電容值，實現其輸出功率比為1：1至1：3特性。 After the circuit of the invention is simulated, it can indeed meet the expected result. Therefore, the circuit can be output to the engraving machine to process the physical circuit and measure the result. The finished product of the circuit after engraving machine is shown in Figure 4, and measured by Anritsu-MS2034A network analyzer. Compared with the simulation results, the frequency response of IE3D and physical circuit is shown in Figure 5(a) and (b). The measurement frequency ranges from 0 to 4 GHz, and the size ranges from 0 to -40 dB. In the operating frequency band (fo=0.925 GHz) |S 11 | and |S 41 | are all below -15 dB, and the output 埠|S21| and the coupling 埠| The output power ratio of S31| is 2:1, and in Fig. 5(b), the phase difference between |S 21 | and |S 31 | is 90 degrees. With this good characteristic, change the capacitance value of the capacitor C 1 of the circuit in Figure 1, from 1.3pF to 1.8pF, and then the output power ratio is 1:1, and then the network analyzer The measured IE3D and physical circuit frequency response is shown in Figure 6 (a), (b), the measurement frequency is from 0 to 4 GHz, the size is from 0 to -40 dB, and the input coefficient S scattering coefficient |S 11 | The scattering coefficient |S 41 | is below -15dB, and the output power ratio |S 21 | and |S 31 | of the output 埠 and the coupled 埠 are 1:1, in Fig. 6(b), |S 21 | The phase difference from |S 31 | is 90 degrees, and the above simulation and measurement results are indeed quite close to expectations. Finally, the capacitance value of circuit C 1 in Figure 1 is changed again, from 1.8pF to 0.7pF, and the output power ratio is 3:1. The frequency response of IE3D and the physical circuit is measured by the network analyzer. (a), (b), the measurement frequency is from 0 to 4 GHz, and the size is from 0 to -40 dB. In the working frequency band, both |S 11 | and |S 41 | are below -15 dB, and the output power ratio of both ends is | S 21 | and |S 31 | are 3:1, and in Fig. 7(b), the phase difference between |S 21 | and |S 31 | is 90 degrees. From the above design and simulation results, it is confirmed that the present invention can be realized by a dry coupler by adjusting the variable capacitance value to achieve an output power ratio of 1:1 to 1:3.
因此，藉由上述具體實施例的說明，本發明是以1：2不 等分枝幹耦合器為架構，將兩端之傳輸線以T型等效加入可調式電容，僅需改變電容值即可使電路輸出功率比達到1：1至1：3的調整範圍，因而得以達成以一電路實現多種輸出比例的耦合器功效，在系統的建置上是相當的便利，電路僅藉需改變電容值，即可適用多種不同中心頻率的微波系統，因此，除了具備高度的系統支援性之外，並可減少整個系統建置的成本支出。 Therefore, with the description of the above specific embodiments, the present invention is not 1:2 The averaging branch coupler is an architecture, and the transmission lines at both ends are added to the adjustable capacitor by T-type equivalent, and only the capacitance value needs to be changed to make the output power ratio of the circuit reach the adjustment range of 1:1 to 1:3, thereby Achieving the coupler function of realizing multiple output ratios with one circuit is quite convenient in the system construction. The circuit can be applied to a variety of microwave systems with different center frequencies only by changing the capacitance value. Therefore, in addition to the system with high altitude In addition to support, it can reduce the cost of the entire system.
以上所述，僅為本發明之可行實施例，並非用以限定本 發明之專利範圍，凡舉依據下列請求項所述之內容、特徵以及其精神而為之其他變化的等效實施，皆應包含於本發明之專利範圍內。本發明所具體 界定於請求項之結構特徵，未見於同類物品，且具實用性與進步性，已符合發明專利要件，爰依法具文提出申請，謹請 鈞局依法核予專利，以維護本申請人合法之權益。 The above description is only a possible embodiment of the present invention, and is not intended to limit the present invention. The equivalent scope of the invention, which is based on the content, the features and the spirit of the invention, is to be included in the scope of the invention. Specific to the present invention The structural features defined in the request item are not found in similar items, and they are practical and progressive. They have met the requirements of the invention patents and have applied for it according to law. Please ask the bureau to approve the patents in accordance with the law to protect the applicant's legality. rights and interests.
[1] Reed, J; Wheeler, G.J.; “A Method of Analysis of Symmetrical Four-Port Networks”, Microwave Theory and Techniques, IRE Transactions on Volume: 4, Issue: 4, pp.246-252, October 1956 [1] Reed, J; Wheeler, GJ; "A Method of Analysis of Symmetrical Four-Port Networks", Microwave Theory and Techniques, IRE Transactions on Volume: 4, Issue: 4, pp.246-252, October 1956
[2] Cohn, Seymour B.; “A Class of Broadband Three-Port TEM-Mode Hybrids,” Microwave Theory and Techniques, IEEE Transactions on Volume: 16, Issue: 2, pp.110-116, Feb 1968. [2] Cohn, Seymour B.; “A Class of Broadband Three-Port TEM-Mode Hybrids,” Microwave Theory and Techniques, IEEE Transactions on Volume: 16, Issue: 2, pp. 110-116, Feb 1968.
[3] E. J. Wilkinson; “An N-way hybrid power divider”, IRE Trans. Microwave Theory and Techniques, vol. MTT-8, pp.116 -118 1960 [3] EJ Wilkinson; “An N-way hybrid power divider”, IRE Trans. Microwave Theory and Techniques , vol. MTT-8, pp.116 -118 1960
[4] Luzzatto, G.; Marconi Italiana S.p.A.; “A General 180-Degree Hybrid Ring”, Broadcasting, IEEE Transactions on Volume: BC-14, Issue: 1, pp.41-43, March 1968. [4] Luzzatto, G.; Marconi Italiana SpA; “A General 180-Degree Hybrid Ring”, Broadcasting, IEEE Transactions on Volume: BC-14, Issue: 1, pp.41-43, March 1968.
[5] Lange, J.; “Interdigitated Stripline Quadrature Hybrid”, Microwave Theory and Techniques, IEEE Transactions on Volume: 17, Issue: 12, pp.1150-1151, Dec 1969. [5] Lange, J.; “Interdigitated Stripline Quadrature Hybrid”, Microwave Theory and Techniques, IEEE Transactions on Volume: 17, Issue: 12, pp.1150-1151, Dec 1969.
[6] Yong-Beom Kim, Hyun-Tai Kim, Kwi-Soo Kim, Jong-Sik Lim, and Dal Ahn; “A Branch line hybrid having arbitrary power division ratio and port impedances”, Microwave Conference, 2006. APMC 2006. Asia-Pacific, pp.1376-1379, 12-15 Dec. 2006. [6] Yong-Beom Kim, Hyun-Tai Kim, Kwi-Soo Kim, Jong-Sik Lim, and Dal Ahn; “A Branch line hybrid having arbitrary power division ratio and port impedances”, Microwave Conference, 2006. APMC 2006. Asia-Pacific, pp.1376-1379, 12-15 Dec. 2006.
[7] Tseng, C.-H.; Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan; Wu, C.-H.; “Design of compact branch-line couplers using π-equivalent artificial transmission lines”, Microwaves, Antennas & Propagation, IET, Volume: 6, Issue: 9, pp. 969 - 974, June 19 2012. [7] Tseng, C.-H.; Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan; Wu, C.-H.; “Design of compact branch-line Couplers using π-equivalent artificial transmission lines”, Microwaves, Antennas & Propagation, IET, Volume: 6, Issue: 9, pp. 969 - 974, June 19 2012.
[8] Arriola, W.; Dept. of Radio Eng., Kyung Hee Univ., Yongin, South Korea; Ihn Seok Kim; “Wideband Branch Line Coupler with Arbitrary Coupling Ratio”, Microwave Conference Proceedings (APMC), 2011 Asia-Pacific, pp. 1758-1761, 5-8 Dec. 2011. [8] Arriola, W.; Dept. of Radio Eng., Kyung Hee Univ., Yongin, South Korea; Ihn Seok Kim; “Wideband Branch Line Coupler with Arbitrary Coupling Ratio”, Microwave Conference Proceedings (APMC), 2011 Asia- Pacific, pp. 1758-1761, 5-8 Dec. 2011.
[9] Chun-Han Yu; Inst. of Comput. & Commun. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan; Yi-Hsin Pang; “Dual-Band Unequal-Power Quadrature Branch-Line Coupler With Coupled Lines”, Microwave and Wireless Components Letters, IEEE Volume: 23, Issue: 1, pp. 10-12, Jan. 2013. [9] Chun-Han Yu; Inst. of Comput. & Commun. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan; Yi-Hsin Pang; “Dual-Band Unequal-Power Quadrature Branch-Line Coupler With Coupled Lines Microwave and Wireless Components Letters, IEEE Volume: 23, Issue: 1, pp. 10-12, Jan. 2013.
[10] Tae-Soon Yun; Ki-Byoung Kim; Jong-Chul Le,” Investigation on Size Reduction of a Branch-line Power Divider Using Shunt-Stub,” Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings, Vol.1, Feb.2005. [10] Tae-Soon Yun; Ki-Byoung Kim; Jong-Chul Le, “Research on Size Reduction of a Branch-line Power Divider Using Shunt-Stub,” Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings , Vol.1, Feb.2005.
20‧‧‧傳輸線組 20‧‧‧ Transmission line group
21‧‧‧第一傳輸線 21‧‧‧First transmission line
22‧‧‧第二傳輸線 22‧‧‧second transmission line
23‧‧‧第三傳輸線 23‧‧‧ third transmission line
24‧‧‧第四傳輸線 24‧‧‧fourth transmission line
25‧‧‧第一導電區塊 25‧‧‧First conductive block
26‧‧‧第二導電區塊 26‧‧‧Second conductive block
30‧‧‧延伸段 30‧‧‧Extension
31a、31b、31c、31d‧‧‧三角形段 31a, 31b, 31c, 31d‧‧‧ triangle segments
32a、32b、32c、32d‧‧‧長矩形段 32a, 32b, 32c, 32d‧‧‧ long rectangular segments
C1‧‧‧電容 C 1 ‧‧‧ capacitor
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107196033A (en) * | 2017-06-20 | 2017-09-22 | 京信通信***（中国）有限公司 | A kind of directional coupler of not decile power |
| CN107732392A (en) * | 2017-10-20 | 2018-02-23 | 南京理工大学 | Minimize the coupler of adjustable coupling coefficient |
| TWI618294B (en) * | 2017-03-30 | 2018-03-11 | 國立勤益科技大學 | Arbitrary output ratio of constant impedance |
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| TWI624112B (en) * | 2016-11-10 | 2018-05-11 | 國立勤益科技大學 | Any ratio output power branch coupler of equal electrical length |
| TWI633702B (en) * | 2017-02-10 | 2018-08-21 | 國立勤益科技大學 | Hybrid branch coupler with adjustable output power |
| TWI633749B (en) * | 2017-07-25 | 2018-08-21 | 國立勤益科技大學 | Mixed branch with equal output power ratio |
| TWI650899B (en) * | 2017-12-18 | 2019-02-11 | 國立勤益科技大學 | Hybrid serial high frequency signal distribution circuit |
| TWI645610B (en) * | 2017-12-18 | 2018-12-21 | 國立勤益科技大學 | Second-order branch coupler for adjustable output power ratio in 2.45GHz Wi-Fi band |
| TWI650781B (en) * | 2018-04-26 | 2019-02-11 | 國立勤益科技大學 | Adjustable output power ratio rat collar coupler |
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