Ultra-wideband power divider
By combining the first and second power dividers with an RF switch, dynamic frequency switching is achieved, solving the problem of narrow frequency bands in the power divider. This enables a power divider design with ultra-wideband coverage and low loss, suitable for 5G base stations and satellite communications.
Patent Information
- Application Number
- CN202520343674.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing power divider products operate in a narrow frequency band, which cannot meet the needs of ultra-wideband.
By combining the first and second power dividers with an RF switch design, different power divider paths can be selected by switching RF switches in different frequency bands, thereby achieving dynamic frequency switching and expanding the operating frequency band.
It achieves an ultra-wideband operating frequency band from 10MHz to 26GHz, with low loss (<3dB), high isolation (>25dB) and miniaturization (<4mm²), making it suitable for multi-band communication systems.
Smart Images
Figure CN223797527U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power divider technology, specifically to an ultra-wideband power divider. Background Technology
[0002] A power divider can distribute one input signal to two or more outputs in equal or unequal proportions (such as a two-way power divider, a four-way power divider, etc.), and can also be used in reverse as a combiner to combine multiple signals into one output. Currently, conventional power divider products operate in relatively narrow frequency bands, which cannot meet the needs of ultra-wideband applications. Utility Model Content
[0003] In view of this, the present invention provides an ultra-wideband power divider to solve the problem of the relatively narrow operating frequency band of existing power divider products.
[0004] This utility model provides an ultra-wideband power divider, comprising:
[0005] A first radio frequency switch, wherein the common terminal of the first radio frequency switch is connected to the input signal;
[0006] A first power divider and a second power divider, wherein the input terminal of the first power divider is connected to the first selection terminal of the first RF switch, and the input terminal of the second power divider is connected to the second selection terminal of the first RF switch;
[0007] The second and third RF switches are connected as follows: the first output terminal of the first power divider is connected to the first selection terminal of the second RF switch; the second output terminal of the first power divider is connected to the first selection terminal of the third RF switch; the first output terminal of the second power divider is connected to the second selection terminal of the second RF switch; and the second output terminal of the second power divider is connected to the second selection terminal of the third RF switch.
[0008] The operating frequency band of the second power divider is higher than that of the first power divider.
[0009] In one optional implementation, the first RF switch, the second RF switch, and the third RF switch are all single-pole double-throw switches.
[0010] In one alternative implementation, the first power divider operates in a frequency band of 10MHz to 6GHz.
[0011] In one alternative implementation, the second power divider operates in the frequency band of 6 GHz to 26 GHz. Beneficial effects
[0012] When the frequency of the input signal is within the operating frequency band of the first power divider, the first select terminal of the first RF switch can be switched to be connected to the common terminal of the first RF switch, the first select terminal of the second RF switch can be switched to be connected to the common terminal of the second RF switch, and the first select terminal of the third RF switch can be switched to be connected to the common terminal of the third RF switch. At this time, the common terminal of the second RF switch becomes the first output channel of the ultra-wideband power divider, and the common terminal of the third RF switch becomes the second output channel of the ultra-wideband power divider. When the frequency of the input signal is within the operating frequency band of the second power divider, the second select terminal of the first RF switch can be switched to be connected to the common terminal of the first RF switch, the second select terminal of the second RF switch can be switched to be connected to the common terminal of the second RF switch, and the second select terminal of the third RF switch can be switched to be connected to the common terminal of the third RF switch. At this time, the common terminal of the second RF switch becomes the first output channel of the ultra-wideband power divider, and the common terminal of the third RF switch becomes the second output channel of the ultra-wideband power divider. The first or second power divider can be selected according to the frequency of the input signal, so that the operating frequency band of the ultra-wideband power divider includes the operating frequency band of the first power divider and the operating frequency band of the second power divider, thus giving the ultra-wideband power divider a wider operating frequency band.
[0013] The first power divider operates in the frequency band of 10MHz to 6GHz, and the second power divider operates in the frequency band of 6GHz to 26GHz. This allows the ultra-wideband power divider to operate in the frequency band of 10MHz to 26GHz. Attached Figure Description
[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model.
[0016] Explanation of reference numerals in the attached figures:
[0017] 1. First RF switch; 2. First power divider; 3. Second power divider; 4. Second RF switch; 5. Third RF switch. 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0019] The following is combined Figure 1 The following describes embodiments of the present invention.
[0020] According to an embodiment of the present invention, an ultra-wideband power divider is provided, comprising:
[0021] The first radio frequency switch 1, the common terminal of the first radio frequency switch 1 is connected to the input signal;
[0022] A first power divider 2 and a second power divider 3, wherein the input terminal of the first power divider 2 is connected to the first selection terminal of the first RF switch 1, and the input terminal of the second power divider 3 is connected to the second selection terminal of the first RF switch 1.
[0023] The second RF switch 4 and the third RF switch 5 are connected as follows: the first output terminal of the first power divider 2 is connected to the first selection terminal of the second RF switch 4; the second output terminal of the first power divider 2 is connected to the first selection terminal of the third RF switch 5; the first output terminal of the second power divider 3 is connected to the second selection terminal of the second RF switch 4; and the second output terminal of the second power divider 3 is connected to the second selection terminal of the third RF switch 5.
[0024] The operating frequency band of the second power divider 3 is higher than that of the first power divider 2.
[0025] When the frequency of the input signal is within the operating frequency band of the first power divider 2, the first selection terminal of the first RF switch 1 can be switched to be connected to the common terminal of the first RF switch 1, the first selection terminal of the second RF switch 4 can be switched to be connected to the common terminal of the second RF switch 4, and the first selection terminal of the third RF switch 5 can be switched to be connected to the common terminal of the third RF switch 5. At this time, the common terminal of the second RF switch 4 becomes the first output channel of the ultra-wideband power divider, and the common terminal of the third RF switch 5 becomes the second output channel of the ultra-wideband power divider. When the frequency of the input signal is within the operating frequency band of the second power divider 3, the second selection terminal of the first RF switch 1 can be switched to be connected to the common terminal of the first RF switch 1, the second selection terminal of the second RF switch 4 can be switched to be connected to the common terminal of the second RF switch 4, and the second selection terminal of the third RF switch 5 can be switched to be connected to the common terminal of the third RF switch 5. At this time, the common terminal of the second RF switch 4 becomes the first output channel of the ultra-wideband power divider, and the common terminal of the third RF switch 5 becomes the second output channel of the ultra-wideband power divider. The first power divider 2 or the second power divider 3 can be selected according to the frequency of the input signal, so that the operating frequency band of the ultra-wideband power divider includes the operating frequency band of the first power divider 2 and the operating frequency band of the second power divider 3, thus giving the ultra-wideband power divider a wider operating frequency band.
[0026] This application utilizes a combination of radio frequency switches and power dividers. By leveraging the wide bandwidth of radio frequency switches, it compensates for the narrow bandwidth of power dividers, resulting in good circuit performance and a simple principle.
[0027] By independently designing the first power divider 2 (low frequency band) and the second power divider 3 (high frequency band), the impedance matching and isolation characteristics of different frequency bands are optimized respectively.
[0028] Traditional multi-stage power divider cascading leads to the superposition of insertion losses (e.g., the theoretical loss of a 1-to-4 power divider is 6dB). However, this solution directly selects the power divider path of different frequency bands through an RF switch, reducing the cascading links, and the measured loss can be controlled below 3dB.
[0029] The first RF switch 1 (SPDT) selects between low-frequency and high-frequency power dividers, while the second and third RF switches 5 (SPDT) dynamically switch the output path, supporting multi-band communication systems (such as simultaneous compatibility with Sub-6GHz and millimeter-wave bands). It is suitable for scenarios requiring multi-band coordination, such as 5G base stations and satellite communications, avoiding the limitations of traditional fixed-band power dividers.
[0030] The low-frequency and high-frequency power dividers are separate and interconnected by an RF switch, avoiding the complex multi-stage matching network in traditional broadband designs.
[0031] The RF switch employs a low-loss design (such as GaAs FET or PIN diode) with an insertion loss of <0.5dB@26GHz.
[0032] The ultra-wideband power divider achieves ultra-wideband coverage (10MHz to 26GHz), low loss (<3dB), high isolation (>25dB), and miniaturization (<4mm²) through frequency band division design and dynamic switching of RF switches, making it particularly suitable for high-frequency broadband systems such as 5G and satellite communications. Its core technologies draw on multi-stage impedance matching, folded microstrip lines, and exponentially graded structures, representing an innovative solution for broadband RF device design.
[0033] The first power divider 2 operates in the frequency band of 10MHz to 6GHz, and the second power divider 3 operates in the frequency band of 6GHz to 26GHz. This allows the ultra-wideband power divider to operate in the frequency band of 10MHz to 26GHz.
[0034] In one optional embodiment, the first RF switch 1, the second RF switch 4, and the third RF switch 5 are all single-pole double-throw switches. The operating frequency bands of the first RF switch 1, the second RF switch 4, and the third RF switch 5 all include the operating frequency bands of the first power divider 2 and the second power divider 3, i.e., they include the union of the operating frequency bands of the first power divider 2 and the second power divider 3. Low insertion loss can be selected, which can effectively reduce the insertion loss performance of the ultra-wideband power divider.
[0035] In one alternative implementation, the first power divider 2 operates in a frequency band of 10MHz to 6GHz.
[0036] In one alternative implementation, the second power divider 3 operates in a frequency band of 6 GHz to 26 GHz.
[0037] The first power divider 2 operates in the frequency band of 10MHz to 6GHz, and the second power divider 3 operates in the frequency band of 6GHz to 26GHz. This allows the ultra-wideband power divider to operate in the frequency band of 10MHz to 26GHz.
[0038] Because there are currently few types of ultra-wideband power dividers on the market, the selection is very limited and the options are quite restrictive, sometimes failing to meet the product's technical specifications.
[0039] This application allows for the implementation of ultra-wideband power splitting functionality by selecting three low-insertion-loss SPDT switches and two power dividers in different frequency bands, based on the frequency requirements of the product itself. The range of wideband SPDT switches and narrowband power dividers available for selection is particularly large.
[0040] The ultra-wideband power divider constructed in this application allows for flexible frequency selection, meeting the product's performance requirements.
[0041] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. An ultra-wideband power divider, characterized in that, include: The first radio frequency switch (1) has its common terminal connected to the input signal; The first power divider (2) and the second power divider (3) are connected, with the input terminal of the first power divider (2) connected to the first selection terminal of the first radio frequency switch (1) and the input terminal of the second power divider (3) connected to the second selection terminal of the first radio frequency switch (1). The second RF switch (4) and the third RF switch (5) are connected as follows: the first output terminal of the first power divider (2) is connected to the first selection terminal of the second RF switch (4); the second output terminal of the first power divider (2) is connected to the first selection terminal of the third RF switch (5); the first output terminal of the second power divider (3) is connected to the second selection terminal of the second RF switch (4); and the second output terminal of the second power divider (3) is connected to the second selection terminal of the third RF switch (5). The operating frequency band of the second power divider (3) is higher than that of the first power divider (2).
2. The ultra-wideband power divider according to claim 1, characterized in that, The first radio frequency switch (1), the second radio frequency switch (4) and the third radio frequency switch (5) are all single-pole double-throw switches.
3. The ultra-wideband power divider according to claim 1, characterized in that, The first power divider (2) operates in the frequency band from 10MHz to 6GHz.
4. The ultra-wideband power divider according to claim 1, characterized in that, The second power divider (3) operates in the frequency band of 6 GHz to 26 GHz.