Power divider and integrated chip
By using three coil structures in the power divider instead of the λ/4 transmission line and combining the isolation circuit, the problem of Wilkinson's power divider is solved, and a smaller power divider design and higher isolation are achieved. It meets the demand for small and high-performance circuits of the new generation of millimeter wave communication.
Patent Information
- Application Number
- CN202421238768.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing Wilkinson power dividers need to be matched with λ/4 transmission lines, which makes the power dividers occupy a large area, making it difficult to meet the needs of the new generation of millimeter wave communication for smaller size and high-performance circuit structures.
The three coil structures are used to replace the λ/4 transmission line, and the coupling between the first coil, the second coil and the third coil is combined with the first isolation circuit and the second isolation circuit to realize the input, output and isolation of the signal, thereby reducing the Area occupation and isolation are improved.
A power splitter with a smaller area is realized, which reduces interference and return loss between the output signals, maintains the stable operation of the power splitter, and saves area.
Smart Images
Figure CN222355409U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present application relate to the technical field of power distribution, and in particular to a power distributor and an integrated chip. Background Art
[0002] In recent years, the new generation of millimeter wave communications has put forward faster, higher integration and lower cost requirements for circuit systems. Seeking smaller size and high-performance circuit structures has become an increasing challenge for circuit designers. Power dividers are widely used in millimeter wave circuit systems to achieve power synthesis and distribution. For example, in phased array systems, power dividers are essential modules. On the one hand, they realize power synthesis of multiple channels, and on the other hand, they realize isolation between channels to avoid mutual influence between channels.
[0003] At present, the most common power divider is the Wilkinson power divider, which can not only achieve input / output matching, but also has the characteristics of high isolation, and is often used in power distribution or power synthesis. However, the Wilkinson power divider needs to use a λ / 4 transmission line for matching, which occupies a large area. Utility Model Content
[0004] The embodiments of the present application provide a power distributor and an integrated chip, which can provide a power distributor with a smaller area.
[0005] In a first aspect, an embodiment of the present application provides a power distributor, comprising:
[0006] A first coil, a second coil, a third coil, a first isolation circuit and a second isolation circuit;
[0007] Any two coils among the first coil, the second coil and the third coil are coupled to each other;
[0008] The first coil is used to input a first signal, the second coil is used to output a second signal, and the third coil is used to output a third signal;
[0009] The first end of the second coil is connected to the first end of the first isolation circuit, the second end of the second coil is connected to the first end of the second isolation circuit, the first end of the third coil is connected to the second end of the first isolation circuit, and the second end of the third coil is connected to the second end of the second isolation circuit;
[0010] The first isolation circuit and the second isolation circuit are used to improve isolation.
[0011] In one or more embodiments, the first isolation circuit includes a first resistor and a first capacitor;
[0012] The first resistor and the first capacitor are connected in parallel between the first end of the second coil and the first end of the third coil.
[0013] In one or more embodiments, the second isolation circuit includes a second resistor and a second capacitor;
[0014] The second resistor and the second capacitor are connected in parallel between the second end of the second coil and the second end of the third coil.
[0015] In one or more embodiments, the power divider further includes a third capacitor, a fourth capacitor and a fifth capacitor;
[0016] The third capacitor is connected in parallel with the first coil, the fourth capacitor is connected in parallel with the second coil, and the fifth capacitor is connected in parallel with the third coil.
[0017] In one or more embodiments, the power divider includes two layers of metal;
[0018] The first metal layer of the two metal layers is configured to be implemented as the first coil, the first part of the metal in the second metal layer of the two metal layers is configured to be implemented as the second coil, and the second part of the metal in the second metal layer is configured to be implemented as the third coil, and the first metal layer overlaps with the second metal layer.
[0019] In one or more embodiments, the power distributor further comprises an input port, a first output port and a second output port;
[0020] The first end of the input port is connected to the first end of the first coil, the second end of the input port is connected to the second end of the first coil, and the input port inputs the first signal;
[0021] A first end of the first output port is connected to a first end of the second coil, a second end of the first output port is connected to a second end of the second coil, and the first output port outputs the second signal;
[0022] A first end of the second output port is connected to a first end of the third coil, a second end of the second output port is connected to a second end of the third coil, and the second output port outputs the third signal.
[0023] In a second aspect, an embodiment of the present application provides an integrated chip, comprising the power divider as described above.
[0024] The beneficial effects of the present application are as follows: the power divider of the embodiment of the present application comprises a first coil, a second coil, a third coil, a first isolation circuit and a second isolation circuit. Among them, any two coils among the first coil, the second coil and the third coil are coupled to each other. The first coil is used to input a first signal, the second coil is used to output a second signal, and the third coil is used to output a third signal. The first end of the second coil is connected to the first end of the first isolation circuit, the second end of the second coil is connected to the first end of the second isolation circuit, the first end of the third coil is connected to the second end of the first isolation circuit, and the second end of the third coil is connected to the second end of the second isolation circuit. The first isolation circuit and the second isolation circuit are used to improve the isolation between the first output port and the second output port. The Wilkinson power divider using a λ / 4 transmission line in the related art, the present application uses three coils to replace the λ / 4 transmission line. The area of the three coils is smaller than the area of the λ / 4 transmission line. It can be seen that compared with the related art, the embodiment of the present application can provide a power divider with a smaller area. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] One or more embodiments are exemplarily described by the figures in the corresponding drawings, and these exemplary descriptions are not intended to limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements.
[0026] Figure 1 This is a schematic diagram of the structure of the power distributor provided in the embodiment of the present application. Figure 1 ;
[0027] Figure 2 This is a schematic diagram of the structure of the power distributor provided in the embodiment of the present application. Figure 2 ;
[0028] Figure 3 is a schematic diagram of the circuit structure of a power distributor provided in an embodiment of the present application;
[0029] Figure 4 It is a schematic diagram of the structural layout of the power distributor provided in an embodiment of the present application. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and in detail in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0031] It should be noted that, when an element is described as being “connected to” another element, it may be directly connected to the other element, or one or more intervening elements may exist therebetween.
[0032] In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as there is no structural conflict between them.
[0033] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the power distributor provided in the embodiment of the present application. Figure 1 As shown, the power divider 100 includes a first coil 40 , a second coil 50 , a third coil 60 , a first isolation circuit 70 and a second isolation circuit 80 .
[0034] The first coil 40 is used to input the first signal S1, the second coil 50 is used to output the second signal S2, and the third coil 60 is used to output the third signal S3, thereby dividing the first signal S1 into the second signal S2 and the third signal S2, that is, realizing the power distribution function.
[0035] The first end of the second coil 50 is connected to the first end of the first isolation circuit 70, the second end of the second coil 50 is connected to the first end of the second isolation circuit 80, the first end of the third coil 60 is connected to the second end of the first isolation circuit 70, and the second end of the third coil 60 is connected to the second end of the second isolation circuit 80.
[0036] Specifically, any two coils among the first coil 40, the second coil 50 and the third coil 60 are coupled to each other. The arrow between the first coil 40 and the second coil 50 indicates that the first coil 40 and the second coil 50 are coupled; the arrow between the second coil 50 and the third coil 60 indicates that the second coil 50 and the third coil 60 are coupled; and the arrow between the first coil 40 and the third coil 60 indicates that the first coil 40 and the third coil 60 are coupled.
[0037] The first isolation circuit 70 and the second isolation circuit 80 are used to improve the isolation between the port outputting the second signal S2 and the port outputting the third signal S3. The isolation between the port outputting the second signal S2 and the port outputting the third signal S3 is the degree of isolation between the port outputting the second signal S2 and the port outputting the third signal S3. By improving the isolation, the interference between the two can be reduced, the output return loss can be improved, and it is beneficial to maintain the stable operation of the power divider 100.
[0038] In the related art, the Wilkinson power divider needs to use a λ / 4 transmission line, but the present application uses three coils (including a first coil 40, a second coil 50 and a third coil 60) to replace the λ / 4 transmission line. Among them, the area of the three coils is smaller than the area of the λ / 4 transmission line. It can be seen that compared with the related art, the embodiment of the present application can provide a power divider with a smaller area.
[0039] In addition, due to the implementation of three coils, the distance between the port outputting the second signal S2 and the port outputting the third signal S3 can be shortened, thereby making it easier to connect the first isolation circuit 70 and the second isolation circuit 80 .
[0040] In one embodiment, if Figure 2 As shown, the power distributor 100 further includes an input port 10 , a first output port 20 and a second output port 30 .
[0041] The first end of the input port 10 is connected to the first end of the first coil 40, the second end of the input port 10 is connected to the second end of the first coil 40, and the input port 10 inputs the first signal S1. The first end of the first output port 20 is respectively connected to the first end of the second coil 50 and the first end of the first isolation circuit 70, the second end of the first output port 20 is respectively connected to the first end of the second isolation circuit 80 and the second end of the second coil 50, and the first output port 20 outputs the second signal S2. The first end of the second output port 30 is respectively connected to the second end of the first isolation circuit 70 and the first end of the third coil 60, the second end of the second output port 30 is respectively connected to the second end of the second isolation circuit 80 and the second end of the third coil 60, and the second output port 30 outputs the third signal S3.
[0042] Please refer to Figure 3 , Figure 3 The following is an example of a circuit structure of a power divider. Figure 3 As shown, the first isolation circuit 70 includes a first resistor R1 and a first capacitor C1.
[0043] The first resistor R1 and the first capacitor C1 are connected in parallel between the first end of the first output port 20 (ie, the first end of the second coil 50 ) and the first end of the second output port 30 (ie, the first end of the third coil 60 ).
[0044] Specifically, the first resistor R1 is an isolation resistor, and the first capacitor C1 is a coupling capacitor.
[0045] In this embodiment, the second isolation circuit 80 includes a second resistor R2 and a second capacitor C2.
[0046] The second resistor R2 and the second capacitor C2 are connected in parallel between the second end of the first output port 20 (ie, the second end of the second coil 50 ) and the second end of the second output port 30 (ie, the second end of the third coil 60 ).
[0047] Specifically, the second resistor R2 is an isolation resistor, and the second capacitor C2 is a coupling capacitor.
[0048] In this embodiment, the power divider 100 further includes a third capacitor C3, a fourth capacitor C4 and a fifth capacitor C5.
[0049] The third capacitor C3 is connected in parallel with the first coil 40, that is, the third capacitor C3 is connected between the first end and the second end of the first coil 40. The fourth capacitor C4 is connected in parallel with the second coil 50, that is, the fourth capacitor C4 is connected between the first end and the second end of the second coil 50. The fifth capacitor C5 is connected in parallel with the third coil 60, that is, the fifth capacitor C5 is connected between the first end and the second end of the third coil 60.
[0050] Specifically, the third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5 are used to achieve impedance matching.
[0051] Please refer to Figure 4 , Figure 4 An exemplary structural layout diagram of a power distributor is shown. Figure 4 As shown, the power divider is configured to include two metal layers, wherein the two metal layers include a first metal layer M1 and a second metal layer, and the second metal layer includes a first metal portion M21 and a second metal portion M22.
[0052] Specifically, the first metal layer M1 is configured to be implemented as the first coil 40, the first part of the metal M21 in the second metal layer is configured to be implemented as the second coil 50, and the second part of the metal M22 in the second metal layer is configured to be implemented as the third coil 60. Among them, implementing the metal as a coil corresponds to using the metal as the material for manufacturing the coil, for example, implementing the first metal layer M1 as the first coil 40 corresponds to using the first metal layer M1 as the material for manufacturing the first coil 40. In some specific embodiments, the metal may be copper, aluminum, iron, or the like.
[0053] Furthermore, the first metal layer M1 overlaps with the second metal layer, which means in this embodiment that the second metal layer is stacked on the first metal layer M1. Of course, in other embodiments, the first metal layer M1 can be stacked on the second metal layer. By adopting a structure in which two metal layers completely overlap, the area can be saved to the maximum extent, so as to further reduce the area of the power divider.
[0054] It can be understood that in this embodiment, the input port 10, the first output port 20, the second output port 30, the first resistor R1, the first capacitor C1, the second resistor R2 and the second capacitor C2 are also shown respectively. Among them, the first resistor R1 and the first capacitor C1 are connected in parallel between the first end of the first output port 20 and the first end of the second output port 30; the second resistor R2 and the second capacitor C2 are connected in parallel between the second end of the first output port 20 and the second end of the second output port 30.
[0055] An embodiment of the present application further provides an integrated chip, which includes the power distributor 100 in any embodiment of the present application.
[0056] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
[0057] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. It should be understood by ordinary technicians in this field that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A power distributor, characterized in that: include: A first coil, a second coil, a third coil, a first isolation circuit and a second isolation circuit; Any two coils among the first coil, the second coil and the third coil are coupled to each other; The first coil is used to input a first signal, the second coil is used to output a second signal, and the third coil is used to output a third signal; The first end of the second coil is connected to the first end of the first isolation circuit, the second end of the second coil is connected to the first end of the second isolation circuit, the first end of the third coil is connected to the second end of the first isolation circuit, and the second end of the third coil is connected to the second end of the second isolation circuit; The first isolation circuit and the second isolation circuit are used to improve isolation.
2. The power divider according to claim 1, characterized in that: The first isolation circuit includes a first resistor and a first capacitor; The first resistor and the first capacitor are connected in parallel between the first end of the second coil and the first end of the third coil.
3. The power divider according to claim 1, characterized in that: The second isolation circuit includes a second resistor and a second capacitor; The second resistor and the second capacitor are connected in parallel between the second end of the second coil and the second end of the third coil.
4. The power divider according to claim 1, characterized in that: The power divider also includes a third capacitor, a fourth capacitor and a fifth capacitor; The third capacitor is connected in parallel with the first coil, the fourth capacitor is connected in parallel with the second coil, and the fifth capacitor is connected in parallel with the third coil.
5. The power divider according to any one of claims 1 to 4, characterized in that: The power divider includes two layers of metal; The first metal layer of the two metal layers is configured to be implemented as the first coil, the first part of the metal in the second metal layer of the two metal layers is configured to be implemented as the second coil, and the second part of the metal in the second metal layer is configured to be implemented as the third coil, and the first metal layer overlaps with the second metal layer.
6. The power divider according to claim 1, characterized in that: The power distributor also includes an input port, a first output port and a second output port; The first end of the input port is connected to the first end of the first coil, the second end of the input port is connected to the second end of the first coil, and the input port inputs the first signal; A first end of the first output port is connected to a first end of the second coil, a second end of the first output port is connected to a second end of the second coil, and the first output port outputs the second signal; A first end of the second output port is connected to a first end of the third coil, a second end of the second output port is connected to a second end of the third coil, and the second output port outputs the third signal.
7. An integrated chip, characterized in that: Comprising a power divider as described in any one of claims 1-6.