Power divider and electronic equipment

Abstract

The invention discloses a power divider and electronic equipment, and relates to the technical field of communication. The power divider comprises an open-loop resonator and two filters, the two filters are arranged on the two sides of the open-loop resonator and are symmetrical about the center line of the open-loop resonator, and the two filters are respectively coupled with the open-loop resonator. The open-loop resonator is coupled with the input port, one filter is coupled with the first output port, the other filter is coupled with the second output port, and the output power of the first output port is equal to the output power of the second output port.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a power divider and an electronic device. Background Art

[0002] The full name of power divider is power distributor. It is a multi-port passive microwave device that divides the energy of one input signal into two or more equal or unequal outputs. Bandpass filter refers to a device that allows a specific frequency band to pass while shielding other frequency bands. Power dividers and bandpass filters are essential passive components in modern wireless communication systems.

[0003] In related equipment, multiple power dividers and bandpass filters are generally set up to achieve the same energy distribution for multiple ports, but the power dividers and bandpass filters occupy a lot of space in the RF transmission front end. Therefore, how to achieve equal output power distribution for multiple output ports while miniaturizing the power divider has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application provides a power divider and an electronic device, which can distribute equal output power to two output ports while achieving miniaturization of the power divider.

[0005] In a first aspect, the present application provides a power divider, which includes an open-ring resonator and two filters, wherein the two filters are arranged on both sides of the open-ring resonator and are symmetrical about the center line of the open-ring resonator, and the two filters are coupled to the open-ring resonator respectively.

[0006] The open-ring resonator is coupled to the input port, one filter is coupled to the first output port, another filter is coupled to the second output port, and the output power of the first output port is equal to the output power of the second output port.

[0007] In a possible design of the first aspect, a dielectric substrate is included, the open-ring resonator and the filter are arranged on one side of the dielectric substrate, and a metal plate is arranged on the other side of the dielectric substrate.

[0008] There is a first gap between the filter and the open-ring resonator, a second gap between the first output port and one of the filters, a third gap between the second output port and the other filter, and a fourth gap between the input port and the open-ring resonator.

[0009] In a possible design of the first aspect, the open-ring resonator includes a first resonant ring and a second resonant ring, the first resonant ring is provided with a first opening, and the second resonant ring is provided with a second opening. The second resonant ring is sleeved on the outside of the first resonant ring and is concentric with the first resonant ring, and the direction of the first opening is opposite to the direction of the second opening.

[0010] In a possible design manner of the first aspect, the open-ring resonator is symmetrical about its center line, the first opening is symmetrical about the center line, and the second opening is symmetrical about the center line.

[0011] In a possible design manner of the first aspect, the first resonant ring and the second resonant ring are each formed by bending and folding microstrip lines of different lengths.

[0012] In a possible design manner of the first aspect, the first resonant ring and the second resonant ring are circular resonant rings or square resonant rings.

[0013] In a possible design manner of the first aspect, the filter includes at least two U-shaped resonators, the U-shaped resonators are coupled, and the opening directions of two adjacent U-shaped resonators are opposite.

[0014] In a possible design manner of the first aspect, the filter includes two U-shaped resonators.

[0015] In a possible design of the first aspect, the first output port includes a first metal sheet and a first feeder connected to the first metal sheet, the second output port includes a second metal sheet and a second feeder connected to the second metal sheet, and the input port includes a third metal sheet and a third feeder connected to the third metal sheet. The first metal sheet is arranged on a side of one of the filters away from the ring resonator, the second metal sheet is arranged on a side of the other filter away from the ring resonator, and the third metal sheet is arranged on one side of the open-ring resonator.

[0016] In a possible design of the first aspect, the first metal sheet and the filter have equal dimensions in the length direction of the first metal sheet, the second metal sheet and the filter have equal dimensions in the length direction of the second metal sheet, and the length of the third metal sheet is equal to the dimension of the open-ring resonator in the length direction of the third metal sheet.

[0017] In a possible design of the first aspect, the first feeder is connected to an end of the first metal sheet away from the third metal sheet, the second feeder is connected to an end of the second metal sheet away from the third metal sheet, and the third feeder is connected to the middle position of the third metal sheet.

[0018] In a second aspect, the present application provides an electronic device, comprising the power divider in the first aspect and any possible design thereof.

[0019] Beneficial effects of this application:

[0020] In an embodiment of the present application, an open-loop resonator is arranged between two filters, and both filters are coupled to the open-loop resonator, so that the open-loop resonator can be shared by the two filters. The open-loop resonator can contribute a pole to each of the two filters, which is beneficial to reduce the number of single resonance units in the entire power divider, thereby facilitating the miniaturization of the power divider. In addition, by setting the open-loop resonator as a symmetrical structure and symmetrically arranging the two filters on both sides of the open-loop resonator, the structure of the entire power divider is a symmetrical structure, which is beneficial to achieve an average distribution of input power at the two output ports in a ratio of 1:1, thereby achieving equal output power at the two output ports. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a power divider provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the front topological structure of a power divider provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the reverse topological structure of a power divider provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of an open-ring resonator provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the structure of a uniform impedance resonator provided in an embodiment of the present application;

[0027] Figure 6 A schematic diagram of an equivalent circuit model structure of an open-ring resonator provided in an embodiment of the present application;

[0028] Figure 7 A schematic diagram of the structure of a filter provided in an embodiment of the present application;

[0029] Figure 8 A size parameter diagram of a power divider provided in an embodiment of the present application;

[0030] Fig. 9 This is one of the S-parameter electromagnetic simulation result diagrams of a power divider provided in an embodiment of the present application;

[0031] Fig.10 This is a second diagram of S-parameter electromagnetic simulation results of a power divider provided in an embodiment of the present application.

[0032] In the figure:

[0033] 110 - open-ring resonator; 120 - filter; 130 - input port; 140 - first output port; 150 - second output port; 160 - dielectric substrate; 170 - metal plate;

[0034] 111 - first resonant ring; 112 - second resonant ring 11; 113 - first opening; 114 - second opening;

[0035] 121-first filter; 122-second filter; 123-U-type resonator;

[0036] 131 - a third metal sheet; 132 - a third feed line;

[0037] 141 - first metal sheet; 142 - first feeder line; 151 - second metal sheet; 152 - second feeder line. DETAILED DESCRIPTION

[0038] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0039] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0040] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0041] It should be understood that the terms used in the description of the various examples herein are only for describing specific examples and are not intended to be limiting. As used in the description of the various examples, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0042] In this application, "at least one" means one, two or more, and "more" means more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0043] It should also be understood that in the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a sliding connection, a detachable connection, or an integral connection, etc.; it can be a direct connection or an indirect connection through an intermediate medium.

[0044] It should also be understood that the term “comprise” (also known as “includes,” “including,” “comprises” and / or “comprising”) when used in this specification specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0045] It should be understood that the "one embodiment", "another embodiment", "a possible design" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment or implementation are included in at least one embodiment of the present application. Therefore, "in one embodiment of the present application" or "in another embodiment of the present application", "a possible design" appearing in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0046] It should also be understood that the specific values ​​mentioned in the embodiments of the present application do not limit the specific dimensions of specific features or structures. The relevant values ​​may be examples for easy understanding, or they may be the theoretically optimal theoretical values ​​of a certain feature. In practice, the relevant dimensions may be a range of the value appended thereto, for example, the range may be ±10% of the optimal theoretical value, or ±20% of the optimal theoretical value, and in practice, the corresponding technical effect can be achieved.

[0047] The vertical in the embodiments of the present application includes some situations similar to vertical, for example, the situation where the angle between lines, lines and planes, and planes is 80° to 100° can also be understood as vertical, rather than strictly limiting the angle between the two to 90° to be vertical. Similarly, the parallel in the embodiments of the present application also includes situations similar to parallel, that is, the situation where the angle between lines, lines and planes, and planes is 0° to 10° can also be understood as parallel.

[0048] With the continuous development of electromagnetic theory and modern wireless radio frequency microwave communication technology, the available spectrum resources are becoming increasingly scarce, so there is an increasing amount of research on passive microwave electronic devices. Existing communication systems generally include filters and power dividers.

[0049] The full name of the power divider is a multi-port passive microwave device. It is a device that divides the energy of an input signal into two or more equal or unequal outputs. Power dividers are usually used to provide corresponding power to other devices in the communication system (such as antennas, multiplexers, filters, and amplifiers). The overall performance of the communication system will be significantly affected by the characteristics of the power divider in the system. Bandpass filters are devices that allow a specific frequency band to pass while shielding other frequency bands.

[0050] Power dividers and bandpass filters are essential passive components in modern wireless communication systems, but they take up too much space in the front end of RF transmission. Therefore, how to achieve power distribution while miniaturizing the power divider has become a technical problem that needs to be solved urgently.

[0051] In order to solve the above technical problems, the present application embodiment provides a power divider. Figure 1 , Figure 1 A schematic diagram of the three-dimensional structure of a power divider provided in an embodiment of the present application.

[0052] like Figure 1 As shown, a power divider provided in an embodiment of the present application includes an open-ring resonator 110 and two filters 120. The two filters 120 are respectively arranged on both sides of the open-ring resonator 110 and are symmetrical about the center line of the open-ring resonator 110. The two filters 120 are electromagnetically coupled to the open-ring resonator 110. The center line of the open-ring resonator 110 can be referred to as Figure 1 The dotted line in .

[0053] A power divider provided in an embodiment of the present application further includes an input port 130 and two output ports. For the convenience of description, the two output ports are respectively referred to as a first output port 140 and a second output port 150. The open-ring resonator 110 is coupled to the input port 130, one filter 120 is coupled to the first output port 140, and the other filter 120 is coupled to the second output port 150. The output power of the first output port 140 is equal to the output power of the second output port 150.

[0054] In the embodiment of the present application, for the convenience of description, the two filters 120 are respectively referred to as the first filter 121 and the second filter 122. Figure 1 The filter 120 on the left side is called the first filter 121. Figure 1 The filter 120 on the right side of the middle is called the second filter 122. Correspondingly, the output port coupled to the first filter 121 is the first output port 140, and the output port coupled to the second filter 122 is the second output port 150.

[0055] In the embodiment of the present application, by setting the open-ring resonator 110 between the two filters 120, the two filters 120 are coupled to the open-ring resonator 110, so that the open-ring resonator 110 can be shared by the two filters 120. The open-ring resonator 110 can contribute a pole to each of the two filters 120 (the two poles can coincide at one point), which is beneficial to reduce the number of single resonant units in the entire power divider, thereby facilitating the miniaturization of the power divider. In addition, by setting the open-ring resonator 110 to a symmetrical structure, and at the same time, symmetrically arranging the two filters 120 on both sides of the open-ring resonator 110, the structure of the entire power divider is a symmetrical structure, which is beneficial to achieve that the two output ports evenly distribute the input power in a ratio of 1:1, thereby achieving equal output power at the two output ports.

[0056] The specific structure of the power divider in the embodiment of the present application is described below. Figure 2 and Figure 3 , Figure 2 A schematic diagram of the front topological structure of a power divider provided in an embodiment of the present application, Figure 3 A schematic diagram of the reverse topological structure of a power divider provided in an embodiment of the present application.

[0057] like Figure 2 and Figure 3As shown, in one embodiment of the present application, the power divider includes a dielectric substrate 160, wherein the open-ring resonator 110 and the filter 120 are arranged on one side of the dielectric substrate 160, and a metal plate 170 is arranged on the other side of the dielectric substrate 160. The size of the metal plate 170 can be set to be the same as the size of the dielectric plate. The metal plate 170 can be made of copper foil, for example, one side of the dielectric substrate is completely covered with copper to form a layer of copper foil as the metal plate 170. The open-ring resonator 110 and the filter 120 can be made of a microstrip metal layer. Of course, the open-ring resonator 110, the filter 120 and the metal plate 170 can also be made of other metal materials, and the embodiment of the present application does not limit the specific materials of the open-ring resonator 110, the filter 120 and the metal plate 170.

[0058] like Figure 2 As shown, there is a first gap L1 between the filter 120 and the open-ring resonator 110 , a second gap L2 between the first output port 140 and one of the filters 120 , a third gap L3 between the second output port 150 and the other filter 120 , and a fourth gap L4 between the input port 130 and the open-ring resonator 110 .

[0059] Specifically, a first gap L1 is provided between the first filter 121 located on one side of the open-ring resonator 110 and the open-ring resonator 110, and a first gap L1 is provided between the second filter 122 located on the other side of the open-ring resonator 110 and the open-ring resonator 110. The first output port 140 is provided on a side of the first filter 121 far from the ring resonator 110, and a second gap L2 is provided between the first output port 140 and the first filter 121. The second output port 150 is provided on a side of the second filter 122 far from the ring resonator 110, and a third gap L3 is provided between the second output port 150 and the second filter 122.

[0060] The input port 130 is disposed on one side of the open-ring resonator 110, which refers to one of the remaining two sides of the open-ring resonator 110 except the side where the first filter 121 and the second filter 122 are disposed. For example, the first filter 121 and the second filter 122 are disposed on the left and right sides of the open-ring resonator 110, respectively, and the input port 130 can be disposed on the top side or the bottom side of the open-ring resonator 110. Figure 2 As shown, the input port 130 is disposed on the bottom side of the open-ring resonator 110 , and a fourth gap L4 is provided between the input port 130 and the open-ring resonator 110 .

[0061] The input port 130 is electromagnetically coupled to the open-ring resonator 110 , the open-ring resonator 110 is electromagnetically coupled to the first filter 121 and the second filter 122 , the first output port 140 is electromagnetically coupled to the first filter 121 , and the second output port 150 is electromagnetically coupled to the second filter 122 .

[0062] In one embodiment of the present application, the dielectric constant εr of the dielectric substrate 160 is 2.65, and the thickness of the dielectric substrate 160 is 0.7 mm to 1.3 mm, wherein the thickness of the dielectric substrate 160 can be set to 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, and 1.3 mm. The material of the dielectric substrate 160 is F4B material, and the dielectric constant εr of the F4B material is 2.65. The size of the dielectric substrate 160 is 21.0 mm (±0.3 mm)*45.3 mm (±0.3 mm).

[0063] In one embodiment of the present application, refer to Figure 4 , Figure 4 Schematic diagram of the structure of an open-ring resonator 110 provided in an embodiment of the present application. Figure 4 As shown, the open-ring resonator 110 includes a first resonant ring 111 and a second resonant ring 112. The first resonant ring 111 is provided with a first opening 113, and the second resonant ring 112 is provided with a second opening 114. The second resonant ring 112 is sleeved on the outside of the first resonant ring 111 and is concentric with the first resonant ring 111. The direction of the first opening 113 is opposite to the direction of the second opening 114.

[0064] In the embodiment of the present application, the first resonant ring 111 and the second resonant ring 112 are each formed by bending and folding microstrip lines of different lengths. Specifically, the first resonant ring 111 and the second resonant ring 112 can be regarded as being formed by bending and folding a uniform impedance resonator. Figure 5 and Figure 6 , Figure 5 A schematic diagram of the structure of a uniform impedance resonator provided in an embodiment of the present application, Figure 6 FIG. 1 is a schematic diagram of an equivalent circuit model structure of an open-ring resonator 110 provided in an embodiment of the present application. Figure 5 As shown, the uniform impedance resonator can be regarded as a straight metal sheet / metal strip, which can be bent into a desired shape to form the first resonant ring 111 and the second resonant ring 112. The basic structure of the uniform impedance resonator is simple and is widely used because it is easy to design.

[0065] Since the open-ring resonator 110 is composed of two concentric resonant rings, and openings in opposite directions are respectively opened on the two resonant rings, the open-ring resonator 110 will induce a ring current when it is acted upon by an electromagnetic field.

[0066] The open-ring resonator 110 requires an axial magnetic field or magnetic flux perpendicular to the ring plane to be excited, which is its main excitation method. According to the unit topology of the open-ring resonator 110, it can be seen that the open-ring resonator 110 has a cross-polarization characteristic. Therefore, the open-ring resonator 110 can also be excited by a time-varying electric field parallel to the ring plane, but the efficiency of magnetic field excitation is much higher than that of electric field excitation. The open-ring resonator 110 is a miniaturized and compact structure that can only work when it is excited by an axial magnetic field.

[0067] At this time, the open-ring resonator 110 can be equivalent to an RLC series resonant circuit. Figure 6 As shown, the circuit is connected in series with two capacitors, an inductor and a resistor, wherein the resistor can be understood as a part of the circuit line, and in the equivalent circuit structure, the open-ring resonator 110 is independent of the resistor R.

[0068] In the embodiment of the present application, the open-ring resonator 110 is not only easy to tune, but also generally has a small electrical size, and its physical size is much smaller than the wavelength corresponding to its resonant frequency. The physical size of the open-ring resonator 110 is generally about one-tenth of the wavelength, and has a high quality factor Q.

[0069] In one embodiment of the present application, Figure 4 As shown, the open-ring resonator 110 is a structure symmetrical about its center line. The center line of the open-ring resonator 110 can be referred to as Figure 4 Specifically, a first opening 113 is provided on the first resonant ring 111, and a second opening 114 is provided on the second resonant ring 112. The first opening 113 can be provided symmetrically about the center line of the open-ring resonator 110, and the second opening 114 can be provided symmetrically about the center line of the open-ring resonator 110. Thus, only one opening is provided on each resonant ring of the open-ring resonator 110, and the overall structure remains symmetrical.

[0070] In one embodiment of the present application, the first resonant ring 111 and the second resonant ring 112 can be set as a circular resonant ring or a square resonant ring. Of course, it can also be designed as a resonant ring of other shapes as needed, such as an ellipse, a parallelogram, a rhombus or other irregular shapes. It should be noted that the shapes of the first resonant ring 111 and the second resonant ring 112 are generally set to be the same. In the embodiment of the present application, the first resonant ring 111 and the second resonant ring 112 are both square resonant rings, and the shapes of the first resonant ring 111 and the second resonant ring 112 are similar figures.

[0071] In an embodiment of the present application, the filter 120 includes at least two U-shaped resonators 123 . The U-shaped resonators 123 are coupled to each other, and the opening directions of two adjacent U-shaped resonators 123 are opposite.

[0072] refer to Figure 7 , Figure 7 Schematic diagram of the structure of a filter 120 provided in an embodiment of the present application. Figure 7 As shown, in the embodiment of the present application, the filter 120 includes two U-shaped resonators 123. That is, the first filter 121 includes two U-shaped resonators 123, and the opening directions of the two U-shaped resonators 123 are opposite. The second filter 122 includes two U-shaped resonators 123, and the opening directions of the two U-shaped resonators 123 are opposite.

[0073] The U-shaped resonator 123 in the embodiment of the present application is also called a "hairpin" resonator. Two "hairpin" resonators with opposite opening directions are fed through electromagnetic coupling to form a filter 120. The filter 120 can generally be called a Chebyshev bandpass filter 120, which is a filter 120 that can have ripple fluctuations such as frequency response amplitude in the passband or stopband.

[0074] It should be noted that the filter 120 in the embodiment of the present application may also be composed of a greater number of U-shaped resonators 123. Figure 7 On the basis of, a U-shaped resonator 123 with an opening facing downward is added on the left side of the first filter 121, and a U-shaped resonator 123 with an opening facing downward is also added on the right side of the second filter 122. The three U-shaped resonators 123 on the left side form a new first filter 121, and the three U-shaped resonators 123 on the right side form a new second filter 122. Alternatively, in Figure 7 On the basis of the above, a U-shaped resonator 123 with an opening facing downward and a U-shaped resonator 123 with an opening facing upward are added in sequence on the left side of the first filter 121, and a U-shaped resonator 123 with an opening facing downward and a U-shaped resonator 123 with an opening facing upward are also added on the right side of the second filter 122. The four U-shaped resonators 123 on the left side form a new first filter 121, and the four U-shaped resonators 123 on the right side form a new second filter 122.

[0075] Of course, a larger number of U-shaped resonators 123 may be provided in the filter 120, such as 5, 6, 7, etc. However, the opening directions of two adjacent U-shaped resonators 123 need to be opposite, and the structures of the first filter 121 and the second filter 122 are symmetrical about the center line of the open-ring resonator 110.

[0076] In one embodiment of the present application, Figure 2As shown, the first output port 140 includes a first metal sheet 141 and a first feeder 142 connected to the first metal sheet 141, the second output port 150 includes a second metal sheet 151 and a second feeder 152 connected to the second metal sheet 151, and the input port 130 includes a third metal sheet 131 and a third feeder 132 connected to the third metal sheet 131. The first metal sheet 141, the second metal sheet 151 and the third metal sheet 131 are all disposed on a dielectric substrate 160. The first feeder 142, the second feeder 152 and the third feeder 132 are all 50 ohm feeders.

[0077] The first metal plate 141 is disposed on a side of one of the filters 120 (the first filter 121 ) away from the ring resonator 110 , the second metal plate 151 is disposed on a side of the other filter 120 (the second filter 122 ) away from the ring resonator 110 , and the third metal plate 131 is disposed on a side of the open-ring resonator 110 .

[0078] In one embodiment of the present application, the length of the first metal sheet 141 is equal to the size of the filter 120 in the length direction of the first metal sheet 141, and the length of the second metal sheet 151 is equal to the size of the filter 120 in the length direction of the second metal sheet 151. The length of the third metal sheet 131 is equal to the size of the open-ring resonator 110 in the length direction of the third metal sheet 131.

[0079] The first metal sheet 141 and the second metal sheet 151 can be arranged in parallel, so the length direction of the first metal sheet 141 is the same as the length direction of the second metal sheet 151. The filter 120 (first filter 121) on one side of the first metal sheet 141 and the filter 120 (second filter 122) on one side of the second metal sheet 151 are symmetrical structures and have the same size. Therefore, the lengths of the first metal sheet 141 and the second metal sheet 151 are equal.

[0080] In the embodiment of the present application, the size of the first metal sheet 141 can be set to be the same as the size of the second metal sheet 151, and the first metal sheet 141 and the second metal sheet 151 can be set to be symmetrical about the center line of the open-ring resonator 110. Accordingly, the first feed line 142 and the second feed line 152 can use the same feed line, and the first feed line 142 and the second feed line 152 can be set to be symmetrical about the center line of the open-ring resonator 110.

[0081] In the embodiment of the present application, the first output port 140 and one of the filters 120 (the first filter 121) have a second gap L2, which refers to the gap between the first metal sheet 141 and the first filter 121. The second output port 150 and another filter 120 (the second filter 122) have a third gap L3, which refers to the gap between the second metal sheet 151 and the second filter 122. The input port 130 and the open-ring resonator 110 have a fourth gap L4, which refers to the gap between the third metal sheet 131 and the open-ring resonator 110.

[0082] In one embodiment of the present application, Figure 2 As shown, the first feeder 142 is connected to one end of the first metal sheet 141 away from the third metal sheet 131 , the second feeder 152 is connected to one end of the second metal sheet 151 away from the third metal sheet 131 , and the third feeder 132 is connected to the middle position of the third metal sheet 131 .

[0083] By adopting the above setting, the power input to the input port 130 can be evenly distributed to the two output ports, so that the output power of the first output port 140 is equal to the output power of the second output port 150, and the power divider has good performance such as insertion loss and return loss.

[0084] In an embodiment of the present application, an electronic device is further provided. The electronic device may include the power divider in any one of the above embodiments.

[0085] The embodiment of the present application provides a power divider, which is a two-way symmetrical structure with an equal output power ratio. Due to the actual situation, it is difficult or impossible to prove it theoretically using Maxwell's equations, so the performance of the power divider of the present application is analyzed by simulation analysis. The embodiment of the present application uses ANSYS HFSS15.0 software to simulate and optimize the power divider structure in the embodiment of the present application.

[0086] In the embodiment of the present application, the parameters of the power divider used in the simulation are as follows:

[0087] The dielectric constant εr of the dielectric substrate 160 is 2.65, the thickness of the dielectric substrate 160 is 1.0 mm, the material of the dielectric substrate 160 is F4B material, and the surface roughness and thickness variation of the dielectric substrate 160 are ignored. The width of the first feed line 142 and the second feed line 152 are both 2.8 mm.

[0088] The overall area size of the integrated filter power divider structure of the present invention is 21.0 mm*45.3 mm (including two symmetrical input / output feeder lines), wherein the feeder line width is 2.8 mm. Figure 8 This is a size parameter diagram of a power divider provided in an embodiment of the present application. The sizes of other structures of the power divider can refer to Figure 8 Related size settings in .

[0089] In the embodiment of the present application, the thickness of the metal used in the open-ring resonator 110, the filter 120, the first metal sheet 141, the second metal sheet 151, the third metal sheet 131, and the metal plate 170 can be set to 0.017 mm or 0.018 mm. In this embodiment, the metal used in the open-ring resonator 110, the filter 120, the first metal sheet 141, the second metal sheet 151, the third metal sheet 131, and the metal plate 170 are all copper foil with a conductivity of 5.8×107 s / m and a thickness of 0.017 mm as an example for experimental demonstration.

[0090] refer to Fig. 9 and Fig.10 , Fig. 9 This is one of the S parameter electromagnetic simulation result diagrams of a power divider provided in an embodiment of the present application, wherein the return loss of the input port 130 is S11, the insertion loss of the first output port 140 is S21, and the insertion loss of the second output port 150 is S31.

[0091] Fig.10 The second S-parameter electromagnetic simulation result diagram of a power divider provided in an embodiment of the present application shows that the return loss of the first output port 140 is S22, and the return loss of the second output port 150 is S33.

[0092] like Fig. 9 and Fig.10 As shown, the working center resonant frequency of the power divider provided in the embodiment of the present application is 4.78GHz, the relative bandwidth of -5dB is 4.18% (4.66~4.86GHz), and the -5dB attenuation performance and stopband performance of the power divider are relatively high, resulting in high selectivity. The return loss in the passband is better than 27.2dB, and the overall loss is 3.65dB. Since the theoretical insertion loss characteristic of the power divider depends on the number of output ports it contains, the theoretical insertion loss characteristic of the one-to-two power divider, that is, the distribution loss, is a fixed value of 10*lg(2), that is, 3dB. Therefore, the insertion loss is only 3.65dB-3dB=0.65dB (excluding the 3dB distribution loss of the dual-path power divider).

[0093] like Fig. 9 and Fig.10 As shown in the figure, the filter power divider also shows excellent insertion loss, return loss and compact size, high frequency selectivity, good in-band and out-of-band performance, steep passband cutoff edge, and certain harmonic suppression ability. The filter power divider has good performance and is easy to implement.

[0094] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

[0095] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0096] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the protection scope of the present application includes the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0097] This article uses specific examples to illustrate the working principle and implementation method of the power divider and electronic device of the present application. The description of the above embodiments is only used to help understand the specific settings and core ideas of the present application; at the same time, for general technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

[0098] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power divider, characterized in that: It includes an open-ring resonator and two filters, a first filter and a second filter, wherein the two filters are arranged on both sides of the open-ring resonator and are symmetrical about the center line of the open-ring resonator, and the two filters are coupled to the open-ring resonator respectively; The open-ring resonator is coupled to an input port, one of the filters is coupled to a first output port, and the other filter is coupled to a second output port, and an output power of the first output port is equal to an output power of the second output port.

2. The power divider according to claim 1, characterized in that: It comprises a dielectric substrate, the open-ring resonator and the filter are arranged on one side of the dielectric substrate, and a metal plate is arranged on the other side of the dielectric substrate; There is a first gap between the filter and the open-ring resonator, a second gap between the first output port and one of the filters, a third gap between the second output port and the other filter, and a fourth gap between the input port and the open-ring resonator.

3. The power divider according to claim 2, characterized in that: The open-ring resonator comprises a first resonant ring and a second resonant ring, the first resonant ring is provided with a first opening, and the second resonant ring is provided with a second opening; The second resonant ring is sleeved on the outside of the first resonant ring and is concentric with the first resonant ring. The first opening direction is opposite to the second opening direction.

4. The power divider according to claim 3, characterized in that: The open-ring resonator is symmetrical about a center line thereof, the first opening is symmetrical about the center line, and the second opening is symmetrical about the center line.

5. The power divider according to claim 4, characterized in that: The first resonant ring and the second resonant ring are each formed by bending and folding microstrip lines of different lengths.

6. The power divider according to claim 5, characterized in that: The first resonant ring and the second resonant ring are circular resonant rings or square resonant rings.

7. The power divider according to any one of claims 1 to 6, characterized in that: The filter comprises at least two U-shaped resonators, the U-shaped resonators are coupled to each other, and the opening directions of two adjacent U-shaped resonators are opposite.

8. The power divider according to claim 7, characterized in that: The filter includes two of the U-shaped resonators.

9. The power divider according to claim 7, characterized in that: The first output port includes a first metal sheet and a first feeder connected to the first metal sheet, the second output port includes a second metal sheet and a second feeder connected to the second metal sheet, and the input port includes a third metal sheet and a third feeder connected to the third metal sheet; The first metal sheet is disposed on a side of one of the filters away from the open-ring resonator, the second metal sheet is disposed on a side of the other filter away from the open-ring resonator, and the third metal sheet is disposed on one side of the open-ring resonator.

10. The power divider according to claim 9, characterized in that: The first metal plate has the same size as the filter in the length direction of the first metal plate, the second metal plate has the same size as the filter in the length direction of the second metal plate, and the length of the third metal plate is equal to the size of the open-ring resonator in the length direction of the third metal plate.

11. The power divider according to claim 9, characterized in that: The first feeder is connected to an end of the first metal sheet away from the third metal sheet, the second feeder is connected to an end of the second metal sheet away from the third metal sheet, and the third feeder is connected to a middle position of the third metal sheet.

12. An electronic device, characterized in that: A power divider comprising any one of claims 1-11.

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