TWI775583B - Branch line coupler - Google Patents
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Abstract
Description
本申請有關於一種耦合器，尤指一種3dB分支線耦合器。 The present application relates to a coupler, especially a 3dB branch line coupler.
衆所周知，在許多微波電路中，通常使用定向耦合器來解决由分配功率引起的相關問題。隨著移動通信技術和衛星通信技術的發展，為了便於携帶和移動，通信設備的小型化則顯得越來越重要。分支線耦合器被廣泛應用於微波集成電路以及單片集成電路中。傳統的分支線耦合器，比如3dB分支線耦合器是由四段四分之一波長傳輸線組成。然而，傳統分支線耦合器此架構占用相當多的印刷電路板(Printed Circuit Board，PCB)面積。 It is well known that in many microwave circuits, directional couplers are commonly used to solve the problems associated with distributing power. With the development of mobile communication technology and satellite communication technology, in order to facilitate portability and mobility, the miniaturization of communication equipment becomes more and more important. Branch line couplers are widely used in microwave integrated circuits and monolithic integrated circuits. A traditional branch line coupler, such as the 3dB branch line coupler, consists of four quarter-wavelength transmission lines. However, this architecture of conventional branch line couplers occupies a considerable amount of printed circuit board (PCB) area.
有鑑於此，在本申請一實施例中，提供一種小型化的分支線耦合器結構。 In view of this, in an embodiment of the present application, a miniaturized branch line coupler structure is provided.
本申請一實施例揭露一種分支線耦合器，包括：第一端口、第二端口、第三端口及第四端口，分別作為輸入端、直通端、耦合端及隔離端；第一傳輸線，包括：第一長條形傳輸線，具有電性連接於上述第一端口的第一第一端以及電性連接於上述第二端口的第一第二端，上述第一長條形傳輸線沿著一既定方向延伸；第一分支傳輸線，電性連接於上述第一第一端，並具有第一狹縫；第二分支傳輸線，電性連接於上述第一第二端，並具有第二狹縫，其中上述第一分支傳輸線與上述第二分支傳輸線相對於一第一軸線呈軸對稱關係；第二傳輸線，包括：第二長條形傳輸線，具有電性連接於上述第三端口的第二第一 端以及電性連接於上述第四端口的第二第二端，上述第二長條形傳輸線沿著上述既定方向延伸；第三分支傳輸線，電性連接於上述第二第一端，並具有第三狹縫；第四分支傳輸線，電性連接於上述第二第二端，並具有第四狹縫，其中上述第三分支傳輸線與上述第四分支傳輸線相對於上述第一軸線軸呈軸對稱關係；第一彎折型傳輸線，電性連接於上述第一端口以及上述第四端口之間；以及第二彎折型傳輸線，電性連接於上述第二端口以及上述第三端口之間。 An embodiment of the present application discloses a branch line coupler, including: a first port, a second port, a third port, and a fourth port, which are used as an input end, a straight-through end, a coupling end, and an isolation end, respectively; and a first transmission line, including: The first elongated transmission line has a first first end electrically connected to the first port and a first second end electrically connected to the second port, and the first elongated transmission line is along a predetermined direction extending; the first branch transmission line is electrically connected to the first first end and has a first slit; the second branch transmission line is electrically connected to the first and second ends and has a second slit, wherein the above The first branch transmission line and the second branch transmission line are in an axisymmetric relationship with respect to a first axis; the second transmission line includes: a second elongated transmission line having a second first transmission line electrically connected to the third port terminal and a second second end electrically connected to the fourth port, the second elongated transmission line extends along the predetermined direction; the third branch transmission line is electrically connected to the second first end and has a first three slits; a fourth branch transmission line electrically connected to the second second end and having a fourth slit, wherein the third branch transmission line and the fourth branch transmission line are in an axisymmetric relationship with respect to the first axis a first bend-type transmission line electrically connected between the first port and the fourth port; and a second bend-type transmission line electrically connected between the second port and the third port.
根據本申請一實施例，上述第一分支傳輸線包括螺旋狀分支，上述第一狹縫位於上述螺旋狀分支與上述第一彎折型傳輸線之間。 According to an embodiment of the present application, the first branch transmission line includes a helical branch, and the first slit is located between the helical branch and the first bending type transmission line.
根據本申請一實施例，上述第一分支傳輸線更包括長條形分支，以及位於上述螺旋狀分支與上述長條形分支之間的第五狹縫。 According to an embodiment of the present application, the first branch transmission line further includes an elongated branch, and a fifth slit located between the helical branch and the elongated branch.
根據本申請一實施例，上述第一分支傳輸線更包括L形分支，以及位於上述螺旋狀分支與上述L形分支之間的第五狹縫。 According to an embodiment of the present application, the first branch transmission line further includes an L-shaped branch, and a fifth slit located between the helical branch and the L-shaped branch.
根據本申請一實施例，上述第一彎折型傳輸線包括第五分支傳輸線，上述第五分支傳輸線包括：第五第一分支，沿著上述既定方向延伸；第五第二分支，沿著上述既定方向延伸；以及第五第三分支，連接上述第五第一分支與上述第五第二分支接近上述第二彎折型傳輸線的端子。 According to an embodiment of the present application, the first bending transmission line includes a fifth branch transmission line, and the fifth branch transmission line includes: a fifth first branch extending along the predetermined direction; a fifth second branch extending along the predetermined direction and a fifth and third branch, connecting the fifth first branch and the fifth second branch close to the terminal of the second bending type transmission line.
根據本申請一實施例，上述第五分支傳輸線更包括第五第四分支，沿著上述既定方向延伸，上述第五第四分支接近上述第二彎折型傳輸線的端子連接上述第五第三分支。 According to an embodiment of the present application, the fifth branch transmission line further includes a fifth and fourth branch extending along the predetermined direction, and the fifth and fourth branch is close to the terminal of the second bending type transmission line to connect the fifth and third branches .
根據本申請一實施例，上述第二彎折型傳輸線包括第六分支傳輸線，上述第六分支傳輸線包括：第六第一分支，沿著上述既定方向延伸；第六第二分支，沿著上述既定方向延伸；第六第三分支，連接上述第六第一分支與上述第六第二分支接近上述第一彎折型傳輸線的端子；以及第六第四分支，沿著上述既定方向延伸，上述第六第四分支接近上述第一彎折型傳輸線的端子連接上述第六第三分支。 According to an embodiment of the present application, the second bending transmission line includes a sixth branch transmission line, and the sixth branch transmission line includes: a sixth first branch extending along the predetermined direction; a sixth second branch extending along the predetermined direction extending in the direction; a sixth and third branch, connecting the sixth first branch and the sixth second branch to the terminal of the first bending type transmission line; and a sixth and fourth branch extending along the predetermined direction, the first The six fourth branches are close to the terminals of the first zigzag transmission line and are connected to the sixth and third branches.
根據本申請一實施例，上述第一傳輸線以及上述第二傳輸線相對於與上述第一軸線正交的一第二軸線呈軸對稱關係。 According to an embodiment of the present application, the first transmission line and the second transmission line are in an axisymmetric relationship with respect to a second axis that is orthogonal to the first axis.
根據本申請一實施例，分支線耦合器還包括：第一連接部，電性連接上述第一端口、上述第一傳輸線以及上述第一彎折型傳輸線；第二連接部，電性連接上述第二端口、上述第一傳輸線以及上述第二彎折型傳輸線；第三連接部，電性連接上述第三端口、上述第二傳輸線以及上述第二彎折型傳輸線；第四連接部，電性連接上述第四端口、上述第二傳輸線以及上述第一彎折型傳輸線。 According to an embodiment of the present application, the branch line coupler further includes: a first connection part electrically connected to the first port, the first transmission line and the first bent transmission line; a second connection part electrically connected to the first port Two ports, the first transmission line and the second bending type transmission line; the third connection part, electrically connecting the third port, the second transmission line and the second bending type transmission line; the fourth connection part, electrically connecting The fourth port, the second transmission line, and the first bend-type transmission line.
根據本申請一實施例，上述第一連接部、上述第二連接部、上述第三連接部及上述第四連接部為傳輸線。 According to an embodiment of the present application, the first connection portion, the second connection portion, the third connection portion, and the fourth connection portion are transmission lines.
根據本申請一實施例所提供的分支線耦合器通過第一分支傳輸線以及第二分支傳輸線的多分支設計以及在第一彎折型傳輸線以及第二彎折型傳輸線加入彎折設計，可以有效减小耦合器的面積。 According to an embodiment of the present application, the branch line coupler provided by the first branch transmission line and the second branch transmission line has a multi-branch design and adds a bending design to the first bending type transmission line and the second bending type transmission line. Small coupler area.
相對於先前技術，本發明的有益效果是明顯的，本發明設計的分支線耦合器，其性能較好且占用面積較小，非常適合應用於移動通信的產品中。 Compared with the prior art, the beneficial effects of the present invention are obvious. The branch line coupler designed by the present invention has better performance and smaller occupation area, and is very suitable for application in mobile communication products.
100:分支線耦合器 100: Branch Line Coupler
C1、C2、C3、C4、C5、C6:曲線 C1, C2, C3, C4, C5, C6: Curves
J1、J2、J3、J4:連接部 J1, J2, J3, J4: Connection part
P1:第一端口 P1: the first port
P2:第二端口 P2: Second port
P3:第三端口 P3: The third port
P4:第四端口 P4: Fourth port
P111、P112:端點 P111, P112: Endpoints
St11、St12、St21、St22:狹縫 St11, St12, St21, St22: Slit
T1:第一傳輸線 T1: The first transmission line
T2:第二傳輸線 T2: Second transmission line
T3:第一彎折型傳輸線 T3: The first bend type transmission line
T4:第二彎折型傳輸線 T4: Second bend type transmission line
T11:第一長條形傳輸線 T11: The first long strip transmission line
T12:第一分支傳輸線 T12: The first branch transmission line
T13:第二分支傳輸線 T13: Second branch transmission line
T121、T131:螺旋狀分支 T121, T131: helical branches
T122、T132:長條形分支 T122, T132: long branch
T1210、T1211、T1213、T1215、T1217、T1219、T1221、T1223、T311、T313、T315、T317:分支段 T1210, T1211, T1213, T1215, T1217, T1219, T1221, T1223, T311, T313, T315, T317: Branch segment
X、Y:軸線 X, Y: axis
圖1為根據本申請一實施例所述之分支線耦合器的結構示意圖。 FIG. 1 is a schematic structural diagram of a branch line coupler according to an embodiment of the present application.
圖2為圖1所示分支線耦合器的第一傳輸線的放大示意圖。 FIG. 2 is an enlarged schematic view of the first transmission line of the branch line coupler shown in FIG. 1 .
圖3為根據本申請一實施例所述之分支線耦合器的S參數仿真曲線圖。 FIG. 3 is an S-parameter simulation graph of the branch line coupler according to an embodiment of the present application.
圖4為根據本申請一實施例所述之分支線耦合器兩輸出端口隔離度S參數仿真曲線圖。 FIG. 4 is a simulation graph of S-parameters of isolation between two output ports of a branch line coupler according to an embodiment of the present application.
圖5為根據本申請一實施例所述之分支線耦合器兩輸出端口輸出相位差異圖。 FIG. 5 is a diagram showing the output phase difference between two output ports of a branch line coupler according to an embodiment of the present application.
圖6為根據本申請一實施例所述之分支線耦合器兩輸出端輸出幅值差異圖。 FIG. 6 is a graph showing the difference between the output amplitudes of the two output ends of the branch line coupler according to an embodiment of the present application.
圖7為傳統分支線耦合器的結構示意圖。 FIG. 7 is a schematic structural diagram of a conventional branch line coupler.
圖8為傳統分支線耦合器的S參數仿真曲線圖。 FIG. 8 is an S-parameter simulation graph of a conventional branch line coupler.
為了便於本領域普通技術人員理解和實施本申請，下面結合附圖與實施例對本申請進一步的詳細描述，應當理解，本申請提供許多可供應用的發明概念，其可以多種特定型式實施。熟悉此技藝之人士可利用這些實施例或其他實施例所描述之細節及其他可以利用的結構，邏輯和電性變化，在沒有離開本申請之精神與範圍之下以實施發明。 In order to facilitate understanding and implementation of the present application by those of ordinary skill in the art, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the present application provides many applicable inventive concepts, which can be implemented in various specific forms. Those skilled in the art may utilize the details described in these or other embodiments and other structural, logical and electrical changes that may be utilized to practice the invention without departing from the spirit and scope of this application.
本申請說明書提供不同的實施例來說明本申請不同實施方式的技術特徵。其中，實施例中的各元件之配置係為說明之用，並非用以限制本申請。且實施例中圖式標號之部分重複，係為了簡化說明，並非意指不同實施例之間的關聯性。其中，圖示和說明書中使用之相同的元件編號係表示相同或類似之元件。本說明書之圖示為簡化之形式且並未以精確比例繪製。為清楚和方便說明起見，方向性用語(例如頂、底、上、下以及對角)係針對伴隨之圖示說明。而以下說明所使用之方向性用語在沒有明確使用在以下所附之申請專利範圍時，並非用來限制本申請之範圍。 The specification of the present application provides different embodiments to illustrate the technical features of different embodiments of the present application. Wherein, the configuration of each element in the embodiment is for illustrative purposes, and is not intended to limit the present application. In addition, some of the reference numerals in the drawings in the embodiments are repeated for the purpose of simplifying the description, and do not mean the relationship between different embodiments. Wherein, the same element numbers used in the drawings and the description represent the same or similar elements. The illustrations in this specification are in simplified form and are not drawn to precise scale. For clarity and convenience of description, directional terms (eg, top, bottom, upper, lower, and diagonal) are directed to the accompanying illustrations. The directional terms used in the following description are not intended to limit the scope of the present application if they are not explicitly used in the scope of the patent application attached below.
再者，在說明本申請一些實施例中，說明書以特定步驟順序說明本申請之方法以及(或)程序。然而，由於方法以及程序並未必然根據所述之特定步驟順序實施，因此並未受限於所述之特定步驟順序。熟習此項技藝者可知其他順序也為可能之實施方式。因此，於說明書所述之特定步驟順序並未用來限定申請專利範圍。再者，本申請針對方法以及(或)程序之申請專利範圍並未受限於其撰寫之執行步驟順序，且熟習此項技藝者可瞭解調整執行步驟順序並未跳脫本申請之精神以及範圍。 Furthermore, in illustrating some embodiments of the present application, the description describes the methods and/or procedures of the present application in a particular sequence of steps. However, since the methods and procedures are not necessarily implemented according to the specific order of steps described, they are not limited to the specific order of steps described. Those skilled in the art will appreciate that other sequences are possible implementations. Therefore, the specific sequence of steps described in the specification is not intended to limit the scope of the patent application. Furthermore, the scope of the patent application of the present application for the method and/or program is not limited by the order of execution steps written therein, and those skilled in the art can understand that adjusting the sequence of execution steps does not deviate from the spirit and scope of the present application. .
圖1顯示根據本申請一實施例所述之分支線耦合器的結構示意圖。參閱圖1，根據本申請一實施例提供一種分支線耦合器包括第一端口P1、第二端口P2、第三端口P3及第四端口P4，以及第一傳輸線T1、第二傳輸線T2、第一彎折型傳輸線T3以及第二彎折型傳輸線T4。 FIG. 1 shows a schematic structural diagram of a branch line coupler according to an embodiment of the present application. Referring to FIG. 1, according to an embodiment of the present application, a branch line coupler is provided including a first port P1, a second port P2, a third port P3 and a fourth port P4, and a first transmission line T1, a second transmission line T2, a first The meandering transmission line T3 and the second meandering transmission line T4.
第一端口P1為輸入端口，用於輸入電磁波信號。第二端口P2為直通端，用於輸出直通電磁波信號。第三端口P3為耦合端，用於輸出耦合電磁波信號。第四端口P4為隔離端。需要說明的是，此處各個端口的設置並不用於限制本發明，本發明技術領域的技術人員可根據實際使用設計各端口的功能。 The first port P1 is an input port for inputting electromagnetic wave signals. The second port P2 is a straight-through terminal for outputting straight-through electromagnetic wave signals. The third port P3 is a coupling end for outputting coupled electromagnetic wave signals. The fourth port P4 is an isolated end. It should be noted that the setting of each port here is not intended to limit the present invention, and those skilled in the technical field of the present invention can design the function of each port according to actual use.
第一傳輸線T1包括第一長條形傳輸線T11、第一分支傳輸線T12以及第二分支傳輸線T13。第一長條形傳輸線T11具有電性連接於第一端口P1的端點P111以及電性連接於第二端口P2的端點P112，第一長條形傳輸線T11沿著一既定方向(圖示中為X方向)延伸。第一分支傳輸線T12電性連接於端點P111，包括螺旋狀分支T121以及長條形分支T122。螺旋狀分支T121與第一彎折型傳輸線T3之間具有狹縫St11，而與長條形分支T122之間具有狹縫St12。第二分支傳輸線T13電性連接於端點P112，包括螺旋狀分支T131以及長條形分支T132。螺旋狀分支T131與第二彎折型傳輸線T4之間具有狹縫St21，而與長條形分支T132之間具有狹縫St22。 The first transmission line T1 includes a first elongated transmission line T11, a first branched transmission line T12 and a second branched transmission line T13. The first elongated transmission line T11 has a terminal P111 electrically connected to the first port P1 and a terminal P112 electrically connected to the second port P2, and the first elongated transmission line T11 is along a predetermined direction (in the figure). in the X direction). The first branch transmission line T12 is electrically connected to the terminal P111, and includes a spiral branch T121 and a long branch T122. There is a slit St11 between the helical branch T121 and the first meandering transmission line T3, and a slit St12 between the helical branch T122. The second branch transmission line T13 is electrically connected to the terminal P112, and includes a spiral branch T131 and a long branch T132. There is a slit St21 between the helical branch T131 and the second meandering transmission line T4, and a slit St22 between the helical branch T132 and the elongated branch T132.
圖2為圖1所示分支線耦合器的第一傳輸線T1的放大示意圖。參閱圖2，根據本申請一實施例所述之第一傳輸線T1包括第一長條形傳輸線T11、第一分支傳輸線T12以及第二分支傳輸線T13。第一分支傳輸線T12包括螺旋狀分支T121以及長條形分支T122。螺旋狀分支T121包括分支段T1210、T1211、T1213、T1215、T1217、T1219。分支段T1210由端點P111朝第二分支傳輸線T13的方向延伸，分支段T1211由分支段T1210朝遠離第一長條形傳輸線T11的方向延伸，分支段T1213由分支段T1211朝遠離第二分支傳輸線T13的方向延伸，分支段T1215由分支段T1213朝第一長條形傳輸線T11的方向延伸，分支段T1217由分支段T1215朝第二分支傳輸線T13的方向延伸，而分支段T1219由分支段T1217朝遠離 第一長條形傳輸線T11的方向延伸。必須說明的是，圖中所示的螺旋狀分支T121的分支段數目僅為示例，本領域技術人員可根據耦合器的特性而選擇適當的分支段數目來組成螺旋狀分支T121。長條形分支T122可為L形，包括分支段T1221以及分支段T1223。同樣的，本領域技術人員可根據耦合器的特性而選擇適當的分支段T1223長度。在配置上，第一長條形傳輸線T11與分支段T1210、T1213、T1217以及T1223平行，而與分支段T1211、T1215、T1219以及T1221垂直。另外，如圖所示，第一分支傳輸線T12以及第二分支傳輸線T13相對於軸線Y呈軸對稱關係，因此關於第二分支傳輸線T13的具體結構不與贅述以精簡說明。 FIG. 2 is an enlarged schematic view of the first transmission line T1 of the branch line coupler shown in FIG. 1 . Referring to FIG. 2 , the first transmission line T1 according to an embodiment of the present application includes a first elongated transmission line T11 , a first branched transmission line T12 and a second branched transmission line T13 . The first branch transmission line T12 includes a helical branch T121 and an elongated branch T122. The helical branch T121 includes branch segments T1210, T1211, T1213, T1215, T1217, and T1219. The branch section T1210 extends from the end point P111 to the direction of the second branch transmission line T13, the branch section T1211 extends from the branch section T1210 to the direction away from the first elongated transmission line T11, and the branch section T1213 extends from the branch section T1211 to the direction away from the second branch transmission line The branch section T1215 extends from the branch section T1213 to the direction of the first elongated transmission line T11, the branch section T1217 extends from the branch section T1215 to the direction of the second branch transmission line T13, and the branch section T1219 extends from the branch section T1217 to the direction of the second branch transmission line T13. keep away The direction of the first elongated transmission line T11 extends. It must be noted that the number of branch segments of the helical branch T121 shown in the figure is only an example, and those skilled in the art can select an appropriate number of branch segments to form the helical branch T121 according to the characteristics of the coupler. The elongated branch T122 may be L-shaped, and includes a branch section T1221 and a branch section T1223. Likewise, those skilled in the art can select an appropriate length of the branch section T1223 according to the characteristics of the coupler. In configuration, the first elongated transmission line T11 is parallel to the branch sections T1210, T1213, T1217 and T1223, and perpendicular to the branch sections T1211, T1215, T1219 and T1221. In addition, as shown in the figure, the first branch transmission line T12 and the second branch transmission line T13 are in an axisymmetric relationship with respect to the axis Y, so the specific structure of the second branch transmission line T13 will not be repeated to simplify the description.
回到圖1，第一彎折型傳輸線T3電性連接於第一端口P1以及第四端口P4之間，包括第五分支傳輸線T31，包括分支段T311、T313、T315。分支段T311沿著既定方向(圖示中為X方向)朝第二彎折型傳輸線T4延伸，分支段T313連接分支段T311以及分支段T315接近第二彎折型傳輸線T4的端子，並沿著與既定方向正交的方向(圖示中為Y方向)朝第二傳輸線T2延伸，分支段T315沿著X方向朝遠離第二彎折型傳輸線T4的方向延伸。在本實施例中，分支段T311、T313、T315組成了第五分支傳輸線T31。在其他實施例中，第五分支傳輸線T31還可以包括分支段T317。在配置上，第一長條形傳輸線T11與分支段T311、T315以及T317平行，而與分支段T313垂直。另外，如圖所示，第一彎折型傳輸線T3以及第二彎折型傳輸線T4相對於軸線Y呈軸對稱關係，因此關於第二彎折型傳輸線T4的具體結構不與贅述以精簡說明。同樣的，第一傳輸線T1以及第二傳輸線T2相對於軸線X呈軸對稱關係，因此關於第二傳輸線T2的具體結構不與贅述以精簡說明。根據本申請實施例，通過第一分支傳輸線T12以及第二分支傳輸線T13的多分支設計以及在第一彎折型傳輸線T3以及第二彎折型傳輸線T4加入彎折設計，可以有效减小耦合器的面積。 Returning to FIG. 1 , the first bent transmission line T3 is electrically connected between the first port P1 and the fourth port P4 , and includes a fifth branch transmission line T31 , including branch segments T311 , T313 , and T315 . The branch section T311 extends toward the second bending type transmission line T4 along a predetermined direction (X direction in the figure), and the branch section T313 connects the branch section T311 and the branch section T315 close to the terminals of the second bending type transmission line T4, and extends along the second bending type transmission line T4. The direction orthogonal to the predetermined direction (Y direction in the figure) extends toward the second transmission line T2, and the branch segment T315 extends along the X direction toward the direction away from the second meander-type transmission line T4. In this embodiment, the branch segments T311, T313, and T315 constitute the fifth branch transmission line T31. In other embodiments, the fifth branch transmission line T31 may further include a branch segment T317. In configuration, the first elongated transmission line T11 is parallel to the branch segments T311 , T315 and T317 , and perpendicular to the branch segment T313 . In addition, as shown in the figure, the first bending type transmission line T3 and the second bending type transmission line T4 are in an axisymmetric relationship with respect to the axis Y, so the specific structure of the second bending type transmission line T4 is not repeated to simplify the description. Likewise, the first transmission line T1 and the second transmission line T2 are in an axis-symmetric relationship with respect to the axis X, so the specific structure of the second transmission line T2 will not be repeated to simplify the description. According to the embodiment of the present application, through the multi-branch design of the first branch transmission line T12 and the second branch transmission line T13 and adding a bending design to the first bending type transmission line T3 and the second bending type transmission line T4, the coupler can be effectively reduced. area.
另外，在其他實施例中，分支線耦合器100還可進一步包括連接部J1、連接部J2、連接部J3及連接部J4，分別用於電性連接第一端口P1、第二端口P2、第三端口P3及第四端口P4。舉例而言，第一傳輸線T1以及第一彎折型傳輸
線T3通過連接部J1與第一端口P1電性連接，第一傳輸線T1以及第二彎折型傳輸線T4通過連接部J2與第二端口P2電性連接，第二傳輸線T2以及第二彎折型傳輸線T4通過連接部J3與第三端口P3電性連接，第二傳輸線T2以及第一彎折型傳輸線T3通過連接部J4與第四端口P4電性連接。根據本申請一實施例，連接部J1、連接部J2、連接部J3及連接部J4均為傳輸線。在其他實施例中，連接部J1、連接部J2、連接部J3及連接部J4可為微帶線，或其他類型的傳輸線。
In addition, in other embodiments, the
根據本申請一實施例，分支線耦合器100的長度L為4.08毫米(mm)，寬度H為6.52毫米(mm)。需要說明的是，分支線耦合器100的大小是根據所使用之頻率所决定，並不以此限定本發明，本領域技術人員可以根據具體情況選擇不同大小的分支線耦合器以適應不同頻率的要求。
According to an embodiment of the present application, the length L of the
參考圖3，圖3為根據本申請一實施例所述之分支線耦合器100的S參數仿真曲線圖。由圖3曲線C1可知，本申請分支線耦合器100之參數S11衰减大於10dB的頻段大概為4.8GHz-6.3GHz，對應中心頻率為5.6GHz。由圖3曲線C2、C3可知，參數S12、S13在所述頻段具有3dB功率損耗。第二端口、第三端口及第四端口的參數S22、S33、S44與第一端口的參數S11相似，附圖未列出。
Referring to FIG. 3 , FIG. 3 is an S-parameter simulation graph of the
參閱圖4，圖4為根據本申請一實施例所述之分支線耦合器兩輸出端口隔離度S參數仿真曲線圖。從圖4中曲線C4可以看出，根據本申請一實施例所述之分支線耦合器兩輸出端口在4.6GHz-6.6GHz頻段具有較好的隔離度。 Referring to FIG. 4 , FIG. 4 is a simulation curve diagram of S-parameters of isolation between two output ports of a branch line coupler according to an embodiment of the present application. It can be seen from the curve C4 in FIG. 4 that the two output ports of the branch line coupler according to an embodiment of the present application have better isolation in the 4.6GHz-6.6GHz frequency band.
請參閱圖5，圖5中曲線C5為根據本申請一實施例所述之分支線耦合器第二端口P2與第三端口P3輸出相位差異圖。由圖5可知，根據本申請一實施例所述之分支線耦合器第二端口P2與第三端口P3在頻段4.9GHz-6.2GHz具有較小的輸出相位差異，具體而言，第二端口P2與第三端口P3輸出相位差小於10°。 Please refer to FIG. 5 , the curve C5 in FIG. 5 is a graph of the output phase difference between the second port P2 and the third port P3 of the branch line coupler according to an embodiment of the present application. It can be seen from FIG. 5 that the second port P2 and the third port P3 of the branch line coupler according to an embodiment of the present application have a small output phase difference in the frequency band 4.9GHz-6.2GHz. Specifically, the second port P2 The phase difference with the output of the third port P3 is less than 10°.
請參閱圖6，圖6中曲線C6為根據本申請一實施例所述之分支線耦合器第二端口P2與第三端口P3輸出幅值差異圖。由圖6可知，根據本申請一實施例所述之分支線耦合器第二端口P2與第三端口P3在頻段4.9GHz-6.2GHz具有較小的幅值輸出差異，具體而言，第二端口P2與第三端口P3輸出幅值差小於2dB。 Please refer to FIG. 6 . Curve C6 in FIG. 6 is a graph showing the difference in output amplitude between the second port P2 and the third port P3 of the branch line coupler according to an embodiment of the present application. It can be seen from FIG. 6 that the second port P2 and the third port P3 of the branch line coupler according to an embodiment of the present application have a small amplitude output difference in the frequency band 4.9GHz-6.2GHz. Specifically, the second port The output amplitude difference between P2 and the third port P3 is less than 2dB.
圖7為傳統分支線耦合器的結構示意圖。傳統分支線耦合器的長度L為7.4毫米(mm)，寬度H為9.14毫米(mm)。根據本申請實施例所述之分支線耦合器100，通過第一分支傳輸線T12以及第二分支傳輸線T13的多分支設計以及在第一彎折型傳輸線T3以及第二彎折型傳輸線T4加入彎折設計，分支線耦合器100的長度L為4.08毫米(mm)，寬度H為6.52毫米(mm)。相較於傳統分支線耦合器，耦合器的面積明顯减小。
FIG. 7 is a schematic structural diagram of a conventional branch line coupler. The conventional branch line coupler has a length L of 7.4 millimeters (mm) and a width H of 9.14 millimeters (mm). According to the
圖8為傳統分支線耦合器之S參數仿真曲線圖，如圖8所示，傳統分支線耦合器的參數S11在衰减大於10dB時頻寬為4.6GHz-6.6GHz，對應中心頻率為5.6GHz。參數S12、S13在所述頻段具有3dB功率損耗。對比圖3與圖8可知，根據本申請實施例所述之分支線耦合器100與傳統分支線耦合器實現效果近似。
Figure 8 is the S-parameter simulation curve of the traditional branch line coupler. As shown in Figure 8, the parameter S11 of the traditional branch line coupler has a bandwidth of 4.6GHz-6.6GHz when the attenuation is greater than 10dB, and the corresponding center frequency is 5.6GHz. Parameters S12, S13 have 3dB power loss in the frequency band. Comparing FIG. 3 with FIG. 8 , it can be seen that the
根據本申請實施例所述之分支線耦合器100面積較傳統分支線耦合器縮小60.67%，另外，分支線耦合器100在頻段4.6GHz-6.6GHz具有較好的性能，參數S11衰减大於10dB，且兩輸出端口輸出幅值與相位差異均較小。在克服了現有技術占用PCB面積較大的缺點後，又具有較好的特性，非常適合應用於移動通信產品中。
According to the embodiment of the present application, the area of the
綜上所述，本申請符合發明專利要件，爰依法提出專利申請。惟，以上該者僅為本申請之較佳實施方式，本申請之範圍並不以上述實施方式為限，舉凡熟悉本案技藝之人士爰依本申請之精神所作之等效修飾或變化，皆應涵蓋於以下申請專利範圍內。 To sum up, this application complies with the requirements of an invention patent, and a patent application is filed in accordance with the law. However, the above are only the preferred embodiments of the present application, and the scope of the present application is not limited to the above-mentioned embodiments, and equivalent modifications or changes made by those who are familiar with the techniques of the present application according to the spirit of the present application should be Covered in the following patent applications.
100:分支線耦合器 100: Branch Line Coupler
P1:第一端口 P1: the first port
P2:第二端口 P2: Second port
P3:第三端口 P3: The third port
P4:第四端口 P4: Fourth port
P111、P112:端點 P111, P112: Endpoints
St11、St12、St21、St22:狹縫 St11, St12, St21, St22: Slit
T1:第一傳輸線 T1: The first transmission line
T2:第二傳輸線 T2: Second transmission line
T3:第一彎折型傳輸線 T3: The first bend type transmission line
T4:第二彎折型傳輸線 T4: Second bend type transmission line
T11:第一長條形傳輸線 T11: The first long strip transmission line
T12:第一分支傳輸線 T12: The first branch transmission line
T13:第二分支傳輸線 T13: Second branch transmission line
T121、T131:螺旋狀分支 T121, T131: helical branches
T122、T132:長條形分支 T122, T132: long branch
T311、T313、T315、T317:分支段 T311, T313, T315, T317: branch segment
X、Y:軸線 X, Y: axis
Claims (10)
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| TWI700858B (en) * | 2018-11-14 | 2020-08-01 | 新加坡商雲網科技新加坡有限公司 | Branch-line coupler |
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| TWI640123B (en) * | 2016-07-01 | 2018-11-01 | 新加坡商雲網科技新加坡有限公司 | Branch-line coupler |
| TWI700858B (en) * | 2018-11-14 | 2020-08-01 | 新加坡商雲網科技新加坡有限公司 | Branch-line coupler |
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