Power divider / synthesizer based on strip-shaped transmission line

Abstract

The utility model discloses a power divider / synthesizer based on a strip-shaped transmission line, and solves the technical problems in the prior art that the heat dissipation of a radio frequency signal is limited, and high-power transmission is not utilized. The power divider / synthesizer based on the strip-shaped transmission line comprises the strip-shaped transmission line, wherein the strip-shaped transmission line comprises a first horizontal transmission line and a first power dividing / synthesizing branch which are equal in width; the first power dividing / combining branch comprises a first vertical transmission line, a second horizontal transmission line and a third horizontal transmission line; the first horizontal transmission line is connected with the middle part of the first vertical transmission line; the second horizontal transmission line and the third horizontal transmission line are respectively connected with two ends of the first vertical transmission line; the impedance value of the first horizontal transmission line is equal to that of the second horizontal transmission line and that of the third horizontal transmission line; and one end of the vertical branch transmission line is connected with the middle part of the first horizontal transmission line, and the other end of the vertical branch transmission line is open-circuited or short-circuited.

Description

Technical Field

[0001] This utility model relates to the technical field of power dividers / combiners, and more specifically, to power dividers / combiners based on stripline transmission lines. Background Technology

[0002] A T-shaped power divider / combiner is a common radio frequency device, mainly used in power combining and antenna array networks. For example... Figure 1 As shown, a conventional T-shaped power divider / combiner connects three wider stripline ports through two narrower stripline arms, using a quarter-wave impedance, which has very limited heat dissipation for RF signals and does not utilize high-power transmission. Utility Model Content

[0003] The main purpose of this invention is to provide a power divider / combiner based on a stripline transmission line to solve the technical problems of limited heat dissipation for radio frequency signals and lack of utilization of high-power transmission in the prior art.

[0004] To achieve the above objectives, this utility model provides a power divider / combiner based on a stripline transmission line, the technical solution of which is as follows:

[0005] A power divider / combiner based on a stripline transmission line includes a stripline transmission line comprising a first horizontal transmission line and a first power divider / combiner branch of equal width; the first power divider / combiner branch includes a first vertical transmission line, a second horizontal transmission line, and a third horizontal transmission line; the first horizontal transmission line is connected to the middle of the first vertical transmission line; the second horizontal transmission line and the third horizontal transmission line are respectively connected to both ends of the first vertical transmission line; the impedance values ​​of the first horizontal transmission line, the second horizontal transmission line, and the third horizontal transmission line are equal; it also includes a vertical stub transmission line, one end of which is connected to the middle of the first horizontal transmission line, and the other end is open-circuited or short-circuited.

[0006] As a further improvement to the above-mentioned stripline-based power divider / combiner: the vertical stub transmission lines are at least two.

[0007] As a further improvement to the above-mentioned stripline-based power divider / combiner: the width of the vertical stub transmission line is smaller than the width of the first horizontal transmission line.

[0008] As a further improvement to the above-mentioned stripline-based power divider / combiner, it also includes a second power divider / combiner branch with a width equal to that of the first horizontal transmission line, the second power divider / combiner branch including both horizontal and vertical transmission lines.

[0009] As a further improvement to the above-mentioned power divider / combiner based on strip transmission lines: the second power divider / combiner branch includes a fourth horizontal transmission line, a second vertical transmission line, a fifth horizontal transmission line, a third vertical transmission line, and a sixth horizontal transmission line that are sequentially connected to the middle of the first vertical transmission line.

[0010] As a further improvement to the above-mentioned stripline-based power divider / combiner: the projected lengths of the second power divider / combiner branch, the second horizontal transmission line, and the third horizontal transmission line are equal.

[0011] This utility model's power divider / combiner based on stripline transmission lines does not employ traditional impedance matching methods. Instead, it uses short-branch vertical stub transmission lines for impedance matching on the main line. This makes the circuit more flexible, allows for broadband matching, and, while ensuring device performance, the vertical stub transmission lines can transfer signal heat to ground, thus reducing device temperature and enabling high-power transmission. Furthermore, the first horizontal transmission line, the first power divider / combiner branch, and the second power divider / combiner branch have equal widths, making them easier to manufacture.

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0013] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The content provided in the drawings and the related descriptions in this utility model can be used to explain this utility model, but do not constitute an undue limitation of this utility model. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of a conventional T-shaped power divider / combiner in the prior art.

[0015] Figure 2 This is a schematic diagram of the power divider / combiner based on a strip transmission line according to Embodiment 1 of this utility model.

[0016] Figure 3 This is a schematic diagram of the cross-section of the strip transmission line in the power divider / combiner based on the strip transmission line in Embodiment 1 of this utility model.

[0017] Figure 4 The equivalent circuit diagram of the stripline transmission line-based power divider / combiner of Embodiment 1 of this utility model is used in the simulation experiment of ADS commercial professional software.

[0018] Figure 5 This is a return loss curve of the power divider / combiner based on strip transmission line in Embodiment 1 of this utility model.

[0019] Figure 6 This is an insertion loss curve of the power divider / combiner based on a strip transmission line according to Embodiment 1 of this utility model.

[0020] Figure 7 This is a schematic diagram of the power divider / combiner based on a strip transmission line according to Embodiment 2 of this utility model.

[0021] Figure 8 This is a schematic diagram of the power divider / combiner based on a strip transmission line according to Embodiment 2 of this utility model.

[0022] The relevant markings in the above figures are:

[0023] 110 - First horizontal transmission line, 120 - Second horizontal transmission line, 130 - Third horizontal transmission line, 140 - Fourth horizontal transmission line, 150 - Fifth horizontal transmission line, 160 - Sixth horizontal transmission line, 210 - First vertical transmission line, 220 - Second vertical transmission line, 230 - Third vertical transmission line, 300 - Vertical stub transmission line, 410 - Ground plane, 420 - Center conductor, 430 - Air medium. Detailed Implementation

[0024] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0025] The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.

[0026] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0027] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion.

[0028] Example 1

[0029] Figure 2 This is a schematic diagram of the power divider / combiner based on a stripline transmission line in this embodiment. Figure 3This is a schematic diagram of the cross-sectional structure of the strip transmission line in the strip transmission line-based power divider / combiner of this embodiment. Figure 4 This is the equivalent circuit diagram for the simulation experiment of the stripline-based power divider / combiner in this embodiment on ADS commercial professional software. Figure 5 This is a return loss curve of the stripline-based power divider / combiner in this embodiment. Figure 6 This is a graph showing the insertion loss of the stripline-based power divider / combiner in this embodiment.

[0030] like Figure 2-3 As shown, the power divider / combiner based on the strip transmission line includes a strip transmission line, which includes two symmetrically arranged ground planes 410, a central conductor strip 420, and an air medium 430 filled in the middle.

[0031] The strip transmission line includes a first horizontal transmission line 110 of equal width, a first power splitting / combining branch, and a vertical stub transmission line 300, enabling power splitting into two or combining into one. The first power splitting / combining branch includes a first vertical transmission line 210, a second horizontal transmission line 120, and a third horizontal transmission line 130. The first horizontal transmission line 110 is connected to the middle of the first vertical transmission line 210. The second horizontal transmission line 120 and the third horizontal transmission line 130 are connected to both ends of the first vertical transmission line 210, respectively. The impedance values ​​of the first horizontal transmission line 110, the second horizontal transmission line 120, and the third horizontal transmission line 130 are equal. One end of the vertical stub transmission line 300 is connected to the middle of the first horizontal transmission line 110, and the other end is open-circuited or short-circuited. The width of the vertical stub transmission line 300 is smaller than the width of the first horizontal transmission line 110.

[0032] according to Figure 4 The equivalent circuit diagram parameters shown were used to simulate and test the S-parameters (scattering parameters) using ADS commercial professional software (version ADS2009). The simulated return loss curves of the main path and branch paths are shown below. Figure 5 As shown, the simulation curves of insertion loss for each branch are as follows: Figure 6 As shown. Figure 5-6 As shown, both loss indicators are ideal and meet the engineering design requirements.

[0033] Example 2

[0034] Figure 7 This is a schematic diagram of the power divider / combiner based on a stripline transmission line in this embodiment.

[0035] Compared to Example 1, the difference between the stripline transmission line-based power divider / combiner in this embodiment is: Figure 7 As shown, there are two vertical stub transmission lines 300.

[0036] Example 3

[0037] Figure 8 This is a schematic diagram of the power divider / combiner based on a stripline transmission line in this embodiment.

[0038] Compared to Example 1, the difference between the stripline transmission line-based power divider / combiner in this embodiment is: Figure 8 As shown, it also includes a second power splitting / combining branch with the same width as the first horizontal transmission line 110, which can realize the power splitting into three or combining three into one.

[0039] The second power divider / combiner branch includes horizontal and vertical transmission lines. Specifically, the second power divider / combiner branch includes a fourth horizontal transmission line 140, a second vertical transmission line 220, a fifth horizontal transmission line 150, a third vertical transmission line 230, and a sixth horizontal transmission line 160, which are sequentially connected to the middle of the first vertical transmission line 210. The projected lengths of the second power divider / combiner branch, the second horizontal transmission line 120, and the third horizontal transmission line 130 are equal.

[0040] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A power divider / combiner based on a stripline transmission line, comprising a stripline transmission line, characterized in that: The strip transmission line includes a first horizontal transmission line (110) of equal width and a first power divider / combiner branch; the first power divider / combiner branch includes a first vertical transmission line (210), a second horizontal transmission line (120) and a third horizontal transmission line (130); The first horizontal transmission line (110) is connected to the middle of the first vertical transmission line (210); the second horizontal transmission line (120) and the third horizontal transmission line (130) are respectively connected to the two ends of the first vertical transmission line (210); The impedance values ​​of the first horizontal transmission line (110), the second horizontal transmission line (120), and the third horizontal transmission line (130) are equal; It also includes a vertical stub transmission line (300), one end of which is connected to the middle of the first horizontal transmission line (110), and the other end is open or short-circuited.

2. The power divider / combiner based on stripline transmission lines as described in claim 1, characterized in that: The vertical stub transmission line (300) is at least two.

3. The power divider / combiner based on stripline transmission lines as described in claim 1, characterized in that: The width of the vertical stub transmission line (300) is smaller than the width of the first horizontal transmission line (110).

4. The power divider / combiner based on stripline transmission lines as described in claim 1, characterized in that: It also includes a second power divider / combiner branch with the same width as the first horizontal transmission line (110), the second power divider / combiner branch including horizontal and vertical transmission lines.

5. The power divider / combiner based on stripline transmission lines as described in claim 4, characterized in that: The second power divider / combiner branch includes a fourth horizontal transmission line (140), a second vertical transmission line (220), a fifth horizontal transmission line (150), a third vertical transmission line (230), and a sixth horizontal transmission line (160) that are sequentially connected to the middle of the first vertical transmission line (210).

6. The power divider / combiner based on stripline transmission lines as described in claim 5, characterized in that: The projected lengths of the second power divider / combiner branch, the second horizontal transmission line (120), and the third horizontal transmission line (130) are equal.

7. The power divider / combiner based on stripline transmission lines as described in claim 1, characterized in that: The strip transmission line includes two symmetrical ground planes (410), a central conductor strip (420), and an air medium (430) filling the middle.

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