U-section broadband high-power eight-path unequal power divider
By using a U-band broadband high-power eight-channel unequal power divider with seven sets of cascaded and matched power dividers, the problem of low power distribution accuracy in existing technologies is solved, achieving high-precision power distribution and broadband compatibility, and exhibiting good isolation and heat dissipation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU HUAXIN MICROWAVE TECH CO LTD
- Filing Date
- 2025-03-24
- Publication Date
- 2026-05-01
AI Technical Summary
Existing U-band unequal power dividers are rarely used in high-power applications and have low allocation accuracy, which cannot meet the high-precision multi-channel power division requirements of U-band broadband.
A U-band broadband high-power eight-channel unequal power divider is designed by cascading and matching seven power dividers with different allocation ratios. Multiple transmission ports are connected on the RF substrate through transmission lines and absorption resistors to achieve different amplitude power distributions for the eight transmission ports.
It widens the power divider bandwidth, achieves high-precision power distribution ratio, is compatible with high-power signal input, and has high isolation and good heat dissipation performance.
Smart Images
Figure CN224191211U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power divider technology, specifically to a U-band broadband high-power eight-channel unequal power divider. Background Technology
[0002] An unequal power divider is a radio frequency device used to distribute input signal energy to multiple output channels in different proportions. The UHF (300MHz-3GHz) band, due to its wide range of applications, demands high bandwidth performance from power dividers. Existing UHF unequal power dividers are mostly 1-to-2 splitters; unequal power dividers are less commonly used in high-power applications and often have low distribution accuracy.
[0003] Based on this, this application proposes an eight-channel unequal power divider suitable for U-band broadband high power, which can meet the high-precision multi-channel unequal power distribution requirements of U-band bandwidth. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a U-band broadband high-power eight-channel unequal power divider, which is specifically achieved through the following technical solution:
[0005] A U-band broadband high-power eight-channel unequal power divider is provided, which uses seven groups of power dividers with different allocation ratios cascaded and matched to achieve different amplitude power distribution on the eight transmission ports of the eight-channel power divider.
[0006] Optionally or preferably, the unequal power divider includes an RF substrate, transmission lines, transmission ports, and absorption resistors; the transmission lines, transmission ports, and absorption resistors are all disposed on the RF substrate; multiple transmission ports are connected by transmission lines; the absorption resistors are disposed on the transmission lines; and the transmission ports are disposed at the edge of the RF substrate.
[0007] Optionally or preferably, the transmission ports include an input port J0, an output port J1, an output port J2, an output port J3, an output port J4, an output port J5, an output port J6, an output port J7, and an output port J8; wherein the input port J0 is located at one end of the RF substrate, and the other transmission ports are located at the other end of the RF substrate.
[0008] Optionally or preferably, the thickness of the radio frequency substrate is 1.010-1.020 mm.
[0009] Optionally or preferably, the high-power signal of the unequal power divider enters the first power divider from the input port J0; the two outputs of the first power divider are connected to the inputs of the second and third power dividers, respectively; the two outputs of the second power divider are connected to the inputs of the fourth and fifth power dividers, respectively; the two outputs of the fourth power divider are connected to the inputs of the sixth and seventh power dividers, respectively; the two outputs of the sixth power divider are connected to the output ports J1 and J2, respectively; the two outputs of the seventh power divider are connected to the output ports J3 and J4, respectively; the two outputs of the fifth power divider are connected to the output ports J5 and J6, respectively; and the two outputs of the third power divider are connected to the output ports J7 and J8, respectively.
[0010] Optionally or preferably, the port allocation amplitude of output port J1 is -12.9dB; the port allocation amplitude of output port J2 is -13.3dB; the port allocation amplitude of output port J3 is -11.5dB; the port allocation amplitude of output port J4 is -10.3dB; the port allocation amplitude of output port J5 is -8.9dB; the port allocation amplitude of output port J6 is -8.5dB; the port allocation amplitude of output port J7 is -6.1dB; and the port allocation amplitude of output port J8 is -6.6dB.
[0011] Based on the above technical solution, this utility model provides a U-band broadband high-power eight-channel unequal power divider, which expands the bandwidth of the power divider and also increases the number of distributions. This utility model has a maximum input power of 300W continuous wave, a maximum bandwidth of 225MHz to 512MHz, and is also compatible with 1000W pulse signal input. It has an insertion loss of ≤0.5dB and features high-precision distribution ratio and high isolation. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0013] Figure 1 This is a two-dimensional circuit diagram of the present invention;
[0014] Figure 2 This is a three-dimensional circuit diagram of the present invention;
[0015] Figure 3 This is the S-curve diagram of this utility model.
[0016] The accompanying diagram illustrates:
[0017] 1-RF substrate, 2-Transmission line, 3-Input port J0, 4-Output port J1, 5-Output port J2, 6-Output port J3, 7-Output port J4, 8-Output port J5, 9-Output port J6, 10-Output port J7, 11-Output port J8, 12-Absorption resistor, 13-First power divider, 14-Second power divider, 15-Third power divider, 16-Fourth power divider, 17-Fifth power divider, 18-Sixth power divider, 19-Seventh power divider. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0019] In a preferred embodiment:
[0020] like Figures 1-3 As shown:
[0021] This embodiment provides a UHF broadband high-power eight-channel unequal power divider, which uses seven groups of power dividers with different allocation ratios cascaded and matched to achieve different amplitude power distribution to the eight transmission ports of the eight-channel power divider. Specifically, it includes an RF substrate 1, transmission lines 2, transmission ports, and absorption resistors 12; the transmission lines, transmission ports, and absorption resistors are all disposed on the RF substrate; multiple transmission ports are connected to each other through transmission lines; the absorption resistors 12 are disposed on the transmission lines; and the transmission ports are disposed at the edge of the RF substrate.
[0022] Among them, the absorption resistor 12 is a high-power absorption resistor with a heat sink, which ensures effective isolation and efficient heat dissipation under different power differences of the lines. The RF connector adopts the NK type, which can provide greater power capacity.
[0023] like Figure 1 As shown, the transmission ports include input port J0 port 3, output port J1 port 4, output port J2 port 5, output port J3 port 6, output port J4 port 7, output port J5 port 8, output port J6 port 9, output port J7 port 10 and output port J8 port 11; wherein the input port J0 port 3 is located at one end of the RF substrate 1, and the other transmission ports are located at the other end of the RF substrate 1.
[0024] Furthermore, in this embodiment, the thickness of the radio frequency substrate is 1.016 mm.
[0025] Further, in this embodiment, the high-power signal enters the first power divider 13 from input port J0 port 3; the two output terminals of the first power divider 13 are respectively connected to the input terminals of the second power divider 14 and the third power divider 15; the two output terminals of the second power divider 14 are respectively connected to the input terminals of the fourth power divider 16 and the fifth power divider 17; the two output terminals of the fourth power divider 16 are respectively connected to the input terminals of the sixth power divider 18 and the seventh power divider 19; the two output terminals of the sixth power divider 18 are respectively connected to output port J1 port 4 and output port J2 port 5; the two output terminals of the seventh power divider 19 are respectively connected to output port J3 port 6 and output port J4 port 7; the two output terminals of the fifth power divider 17 are respectively connected to output port J5 port 8 and output port J6 port 9; the two output terminals of the third power divider 15 are respectively connected to output port J7 port 10 and output port J8 port 11.
[0026] Further, in this embodiment, the port allocation amplitude of output port J1 port 4 is -12.9dB; the port allocation amplitude of output port J2 port 5 is -13.3dB; the port allocation amplitude of output port J3 port 6 is -11.5dB; the port allocation amplitude of output port J4 port 7 is -10.3dB; the port allocation amplitude of output port J5 port 8 is -8.9dB; the port allocation amplitude of output port J6 port 9 is -8.5dB; the port allocation amplitude of output port J7 port 10 is -6.1dB; and the port allocation amplitude of output port J8 port 11 is -6.6dB.
[0027] like Figure 1 As shown, the working principle of this embodiment is as follows:
[0028] After the high-power signal enters from input port J0 port 3, the common terminals are: the first group is allocated to -2.82dB (left) and -3.35dB (right), the second group is allocated to -3.16dB (left) and -2.84dB (right), and the third group is allocated to -4.09 (left) and -1.91dB (right).
[0029] End points: The first group on the left is allocated to -2.79dB (left) and -3.2dB (right), the second group is allocated to -3.57dB (left) and -2.42dB (right), the third group is allocated to -3.22dB (left) and -2.77dB (right), and the fourth group is allocated to -2.75dB (left) and -3.25dB (right).
[0030] After combination, different amplitude distributions are achieved for the 8 ports.
[0031] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. A U-band broadband high-power eight-channel unequal power divider, characterized in that: Seven sets of power dividers with different allocation ratios are cascaded and matched to achieve different amplitude power allocation to the eight transmission ports of the eight-channel power divider; It includes an RF substrate, transmission lines, transmission ports, and absorption resistors; the transmission lines, transmission ports, and absorption resistors are all disposed on the RF substrate; multiple transmission ports are connected by transmission lines; the absorption resistors are disposed on the transmission lines; and the transmission ports are disposed at the edges of the RF substrate.
2. The U-band broadband high-power eight-channel unequal power divider according to claim 1, characterized in that: The transmission ports include an input port J0, an output port J1, an output port J2, an output port J3, an output port J4, an output port J5, an output port J6, an output port J7, and an output port J8; wherein the input port J0 is located at one end of the RF substrate, and the other transmission ports are located at the other end of the RF substrate.
3. The U-band broadband high-power eight-channel unequal power divider according to claim 1, characterized in that: The thickness of the radio frequency substrate is 1.010-1.020 mm.
4. A U-band broadband high-power eight-channel unequal power divider according to claim 2, characterized in that: A high-power signal enters the first power divider from input port J0; the two outputs of the first power divider are connected to the inputs of the second and third power dividers, respectively; the two outputs of the second power divider are connected to the inputs of the fourth and fifth power dividers, respectively; the two outputs of the fourth power divider are connected to the inputs of the sixth and seventh power dividers, respectively; the two outputs of the sixth power divider are connected to output ports J1 and J2, respectively; the two outputs of the seventh power divider are connected to output ports J3 and J4, respectively; the two outputs of the fifth power divider are connected to output ports J5 and J6, respectively; and the two outputs of the third power divider are connected to output ports J7 and J8, respectively.
5. The U-section broadband high-power eight-way unequal power divider according to claim 4, characterized in that: The port allocation amplitude for output port J1 is -12.9dB; the port allocation amplitude for output port J2 is -13.3dB; the port allocation amplitude for output port J3 is -11.5dB; the port allocation amplitude for output port J4 is -10.3dB; the port allocation amplitude for output port J5 is -8.9dB; the port allocation amplitude for output port J6 is -8.5dB; the port allocation amplitude for output port J7 is -6.1dB; and the port allocation amplitude for output port J8 is -6.6dB.