LC power divider and radio frequency power supply module

Abstract

The embodiment of the utility model provides an LC power divider and a radio frequency power supply module, and relates to the technical field of power division. The LC power divider comprises a first power branch, a second power branch and a first capacitor, the first power branch comprises a first inductor and a second capacitor, and the second power branch comprises a second inductor and a third capacitor; if the ratio of the output power of the first output port to the output power of the second output port is M: N, the ratio of the value of the first inductor to the value of the second inductor is N + / -n: M; wherein N and M are positive integers larger than or equal to 1, N is not equal to M, and n is smaller than 1. By setting the inductance ratio of the two branches of the LC power divider, the proportion distribution of the output power of the two branches is realized, and the requirements of unequal division and odd-number equal division are further met.

Description

Technical Field

[0001] The utility model relates to the technical field of power division, and in particular to an LC power divider and a radio frequency power supply module. Background Art

[0002] The current RF power supply circuit has a relatively low operating frequency, ranging from 3 to 30 MHz. If a microstrip line power divider is used, the circuit size will be very large due to the long wavelength, which is not conducive to circuit miniaturization.

[0003] If an LC power divider is used, that is, a power divider implemented with lumped elements, it has the advantages of very small circuit size and simple circuit design, so the LC power divider is widely used in RF power circuits. However, the current LC power dividers generally have symmetrical even-numbered power dividers, for example, two-numbered power dividers, and cannot achieve unequal division. Utility Model Content

[0004] The purpose of the utility model is to provide an LC power divider and a radio frequency power supply module, which realizes the output power ratio distribution of the two branches by setting the inductance ratio in the two branches of the LC power divider, thereby meeting the needs of unequal division and odd-numbered division.

[0005] In order to achieve the above purpose, the technical solution adopted by the embodiment of the utility model is as follows:

[0006] In a first aspect, an embodiment of the utility model provides an LC power divider, comprising a first power branch, a second power branch, a first capacitor and a first isolation resistor, wherein an input port is connected to one end of the first power branch and one end of the second power branch respectively through one end of the first capacitor, the other end of the first capacitor is grounded, the other end of the first power branch is connected to a first output port, the other end of the second power branch is connected to a second output port, one end of the first isolation resistor is connected to the first power branch, and the other end of the first isolation resistor is connected to the second power branch;

[0007] The first power branch includes a first inductor and a second capacitor, the second power branch includes a second inductor and a third capacitor, one end of the first inductor and one end of the second inductor are both connected to one end of the first capacitor, the other end of the first inductor is connected to one end of the second capacitor and the first output port, the other end of the second inductor is connected to one end of the third capacitor and the second output port, and the other end of the second capacitor and the other end of the third capacitor are both grounded;

[0008] If the ratio of the output power of the first output port to the output power of the second output port is M:N, then the ratio of the value of the first inductor to the value of the second inductor is N±n:M; wherein N and M are positive integers greater than 1 and N is not equal to M, and n is less than 1.

[0009] Further, the value of the second capacitor is calculated based on the operating frequency of the LC power divider and the value of the first inductor;

[0010] The value of the third capacitor is calculated based on the operating frequency and the value of the second inductor.

[0011] Further, if the M is smaller than N, the first power branch further includes a third inductor, and the other end of the first inductor is connected to the first output port through the third inductor.

[0012] Furthermore, the second power branch further includes a first phase shifter, and the second inductor is connected to the second output port through the first phase shifter.

[0013] Further, the first phase shifter includes a fourth capacitor, a fifth capacitor and a fourth inductor, the other end of the second inductor is connected to one end of the fourth capacitor and one end of the fourth inductor, the other end of the fourth inductor is connected to one end of the fifth capacitor and the second output port, and the other end of the fourth capacitor and the other end of the fifth capacitor are grounded.

[0014] Further, the value of the first isolation resistor is calculated based on the impedance of the input port, the impedance of the first output port, the impedance of the second output port, and the ratio of the output power of the first output port to the output power of the second output port.

[0015] Further, if M is an odd number, the first power branch divides the output power into M parts based on the unequal sub-branches and the one-to-two sub-branches.

[0016] Further, if N is an even number, the second power branch divides the output power into N parts based on the one-to-two sub-branches.

[0017] Further, if the number of sub-branches of the first power branch is less than that of the second power branch, the first power branch further includes a second phase shifter, and the first power branch is connected to the first output port via the second phase shifter.

[0018] In a second aspect, an embodiment of the utility model further provides a radio frequency power supply module, comprising the LC power divider as described in the first aspect.

[0019] The beneficial effects of an LC power divider and a radio frequency power supply module provided by an embodiment of the utility model are as follows: an LC power divider includes a first power branch, a second power branch and a first capacitor, the input port is connected to one end of the first power branch and one end of the second power branch respectively through one end of the first capacitor, the other end of the first capacitor is grounded, the other end of the first power branch is connected to the first output port, and the other end of the second power branch is connected to the second output port; the first power branch includes a first inductor and a second capacitor, the second power branch includes a second inductor and a third capacitor, one end of the first inductor and one end of the second inductor are both connected to one end of the first capacitor, the other end of the first inductor and one end of the second capacitor are both connected to the one output port, the other end of the second inductor is connected to one end of the third capacitor and the second output port, and the other end of the second capacitor and the other end of the third capacitor are both grounded; if the ratio of the output power of the first output port to the output power of the second output port is M:N, then the ratio of the value of the first inductor to the value of the second inductor is N±n:M; wherein N and M are positive integers greater than or equal to 1, N is not equal to M, and n is less than 1. By setting the inductance ratio of the two branches of the LC power divider, the output power ratio distribution of the two branches is achieved, thereby meeting the needs of unequal division and odd-numbered division.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a radio frequency power supply module provided by an embodiment of the present invention is shown;

[0023] Figure 2 A circuit diagram of an LC power divider provided by an embodiment of the present invention is shown;

[0024] Figure 3 A circuit diagram of another LC power divider provided by an embodiment of the present invention is shown;

[0025] Figure 4 A simulation result diagram showing an LC power divider with an output power ratio of 2:1 provided by an embodiment of the present invention is shown;

[0026] Figure 5A circuit structure diagram of a one-to-three LC power divider provided in an embodiment of the present invention is shown;

[0027] Figure 6 The figure shows the simulation result of a one-to-three LC power divider provided by an embodiment of the present invention.

[0028] Figure numbers: 10-RF power module; 100-LC power divider; 110-first power branch; 120-second power branch; 130-first phase shifter; 140-second phase shifter; 150-one-two sub-branch; Term1-input port; Term2-first output port; Term3-second output port; Term4-third output port; Term5-fourth output port; L1-first inductor; L2-second inductor; L3-third inductor; L4-fourth inductor; L5-fifth inductor; L6-sixth inductor; C1-first capacitor; C2-second capacitor; C3-third capacitor; C4-fourth capacitor; C5-fifth capacitor; C6-sixth capacitor; C7-seventh capacitor; C8-eighth capacitor; R1-first isolation resistor; R2-second isolation resistor. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0030] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] like Figure 1 , which is a schematic diagram of the structure of a radio frequency power module 10 shown in an embodiment of the present invention. The radio frequency power module 10 includes an LC power divider 100. The LC power divider 100 is used to divide the power output by the radio frequency power module 10 into unequal or equal parts.

[0032] like Figure 2As shown, it is a structural schematic diagram of an LC power divider 100 shown in an embodiment of the present invention. The LC power divider 100 includes a first power branch 110, a second power branch 120, a first capacitor C1 and a first isolation resistor R1. The input port Term1 is connected to one end of the first power branch 110 and one end of the second power branch 120 through one end of the first capacitor C1, respectively, the other end of the first capacitor C1 is grounded, the other end of the first power branch 110 is connected to the first output port Term2, and the other end of the second power branch 120 is connected to the second output port Term3; one end of the first isolation resistor R1 is connected to the first power branch 110, and the other end of the first isolation resistor R1 is connected to the second power branch 120.

[0033] Among them, the LC power divider 100 receives the power generated by the RF power module 10 through the input port Term1, and the LC power divider 100 divides the power generated by the RF power module 10 through the first capacitor C1, the first power branch 110 and the second power branch 120, and outputs the divided power through the first output port Term2 and the second output port Term3.

[0034] In this embodiment, the first power branch 110 includes a first inductor L1 and a second capacitor C2, and the second power branch 120 includes a second inductor L2 and a third capacitor C3. One end of the first inductor L1 and one end of the second inductor L2 are both connected to one end of the first capacitor C1, the other end of the first inductor L1 is connected to one end of the second capacitor C2 and the first output port Term2, the other end of the second inductor L2 is connected to one end of the third capacitor C3 and the second output port Term3, and the other end of the second capacitor C2 and the other end of the third capacitor C3 are both grounded.

[0035] If the ratio of the output power of the first output port Term2 to the output power of the second output port Term3 is M:N, then the ratio of the value of the first inductor L1 to the value of the second inductor L2 is N±n:M; wherein N and M are positive integers greater than or equal to 1 and N is not equal to M, and n is less than 1.

[0036] It can be understood that if a 2:1 unequal division is to be achieved, that is, the ratio of the output power of the first output port Term2 to the output power of the second output port Term3 is 1:2, then the ratio of the value of the first inductor L1 to the value of the second inductor L2 is 2±n:1. Since the inductor is a high-resistance element, setting the value of the first inductor L1 of the first power branch 110 to be larger can make the attenuation of the first power branch 110 greater, and thus the output power is smaller. Since the output power of the first power branch 110 and the output power of the second power branch 120 are in a 1:2 relationship, the value of the first inductor L1 is about twice the value of the second inductor L2. For example, if the value of the second inductor L2 is 0.6uH, the value of the first inductor L1 can be set to 1.16uH. Of course, according to the above principle, other unequal division ratios can be obtained by the same logic. For example, to achieve 2:3 unequal division, that is, the ratio of the output power of the first output port Term2 to the output power of the second output port Term3 is 2:3, then the ratio of the value of the first inductor L1 to the value of the second inductor L2 is 3±n:2, that is, the value of the first inductor L1 is about 1.5 times the value of the second inductor L2. Other unequal division ratios can be inferred by referring to the above unequal division principle, which will not be repeated here.

[0037] It can be seen that by setting the inductance ratio of the two branches of the LC power divider 100, the output power ratio distribution of the two branches is achieved, thereby meeting the requirements of unequal division and odd-numbered division.

[0038] Since the first inductor L1 and the second inductor L2 are adjusted based on the output power ratio, in order to adapt the adjusted first inductor L1 and the second inductor L2, and also to make the output power ratio more accurate. The value of the second capacitor C2 is calculated based on the operating frequency of the LC power divider 100 and the value of the first inductor L1, and the value of the third capacitor C3 is calculated based on the operating frequency and the value of the second inductor L2. That is, the second capacitor C2 is calculated based on the adjusted value of the first inductor L1 and the operating frequency, and the third capacitor C3 is calculated based on the adjusted value of the second inductor L2 and the operating frequency. The values ​​of the second capacitor C2 and the third capacitor C3 can be calculated according to the following formula.

[0039]

[0040] Wherein, f is the operating frequency of the LC power divider 100 , if C is the second capacitor C2 , then L is the first inductor L1 ; if C is the third capacitor C3 , then L is the second inductor L2 .

[0041] If the value of the first inductor L1 is 1.16uH, the operating frequency is 13.6MHz, the value of the second capacitor C2 is 240pF; if the value of the second inductor L2 is 0.6uH, the operating frequency is 13.6MHz, the value of the third capacitor C3 is 180pF; the corresponding value of the first capacitor C1 is set to 330pF.

[0042] In this embodiment, one end of the first isolation resistor R1 is connected between the first inductor L1 and the second capacitor C2 , and the other end of the first isolation resistor R1 is connected between the second inductor L2 and the third capacitor C3 .

[0043] In order to ensure high isolation, the value of the first isolation resistor R1 should be calculated based on the impedance of the input port Term1, the impedance of the first output port Term2, the impedance of the second output port Term3, and the ratio of the output power of the first output port Term2 to the output power of the second output port Term3. In actual situations, the impedance of the input port Term1, the impedance of the first output port Term2, and the impedance of the second output port Term3 are equal, and the value is generally 50 ohms. When the impedance of the input port Term1, the impedance of the first output port Term2, and the impedance of the second output port Term3 are equal, the value of the first isolation resistor R1 is (M+N) multiplied by the impedance of the port. If the impedance of each port is 50 ohms, and the LC power divider 100 achieves 2:1 unequal division, that is, M is 1, N is 2, and the value of the first isolation resistor R1 is 3x50=150 ohms.

[0044] In order to reduce the reflection of the output port, when M is less than N, as Figure 3 As shown, the first power branch 110 further includes a third inductor L3 , and the other end of the first inductor L1 is connected to the first output port Term2 through the third inductor L3 .

[0045] It should be understood that the third inductor L3 is used for matching the first output port Term2 to reduce the reflection of the first output port Term2.

[0046] When the value of the first inductor L1 is 1.16 uH, the value of the second capacitor C2 is 240 pF, and the value of the first capacitor C1 is set to 330 pF, the value of the third inductor L3 can be set to 390 nH.

[0047] In order to make the phases of the first power branch 110 and the second power branch 120 the same, continue to refer to Figure 3 When M is less than N, the second power branch 120 further includes a first phase shifter 130 , and the second inductor L2 is connected to the second output port Term3 through the first phase shifter 130 .

[0048] The first phase shifter 130 may be a pi-shaped LC phase shifter. Correspondingly, the first phase shifter 130 includes a fourth capacitor C4, a fifth capacitor C5, and a fourth inductor L4, the other end of the second inductor L2 is connected to one end of the fourth capacitor C4 and one end of the fourth inductor L4, the other end of the fourth inductor L4 is connected to one end of the fifth capacitor C5 and the second output port Term3, and the other end of the fourth capacitor C4 and the other end of the fifth capacitor C5 are grounded.

[0049] Since the third inductor L3 is added to the first power branch 110, the introduction of the third inductor L3 causes the phases of the first power branch 110 and the second power branch 120 to be inconsistent, so the first phase shifter 130 is added to the second power branch 120 to supplement, so that the phases of the first power branch 110 and the second power branch 120 are the same. Since the first phase shifter 130 is composed of an inductor and a capacitor, as long as the inductor and the capacitor in the first phase shifter 130 take appropriate values, the impedance of the inductor is positive and the impedance of the capacitor is negative, and the two cancel each other, and the impedance of the second output port Term3 will not be changed, and thus the reflection loss of the second output port Term3 will not be affected.

[0050] Please refer to Figure 4 , which is the simulation result diagram of the LC power divider 100 with an output power ratio of 2:1, Figure 4 From top to bottom are insertion loss curves of the first power branch 110 and the second power branch 120, return loss curves of the first output port Term2 and the second output port Term3, isolation curves of the first output port Term2 and the second output port Term3, and phase curves of the first power branch 110 and the second power branch 120. Figure 4 All the indicators are consistent with the theory.

[0051] exist Figure 2 On the basis of the LC power divider 100 shown, after performing M:N unequal division, M+N equal division can be further achieved. If M is an odd number, the first power branch 110 divides the output power into M parts based on the unequal sub-branch and the one-to-two sub-branch 150; if N is an even number, the second power branch 120 divides the output power into N parts based on the one-to-two sub-branch 150.

[0052] It can be understood that if the LC power divider 100 performs 1:2 unequal division, it can further achieve 3-division, that is, the second power branch 120 with a proportion of 2 is divided into two, and finally three-division is achieved. If the LC power divider 100 performs 2:3 unequal division, it can further achieve 5-division, that is, the first power branch 110 with a proportion of 2 is divided into two, the second power branch 120 with a proportion of 3 is divided into 1:2 unequal division, and then the branch with a proportion of 2 is divided into two, and finally five-division is achieved; if the LC power divider 100 performs 1:4 unequal division, it can further achieve 5-division, that is, first use a one-to-two sub-branch 150 to divide the second power branch 120 with a proportion of 4 into two sub-branches with an output power proportion of 2, and then use two one-to-two sub-branches 150 to further divide the two sub-branches with an output power proportion of 2 into two, and finally five-division is achieved. Other equal division requirements can be obtained by the above-mentioned equal division principle, which will not be repeated here.

[0053] Preferably, when performing unequal division, the value of M:N should be as large as possible, that is, when performing five equal divisions, 2:3 unequal division is preferred, rather than 1:4 unequal division. Since the value of M:N is larger, the closer the values ​​of M and N are, the smaller the difference between the values ​​of the first inductor L1 of the first power branch 110 and the second inductor L2 of the second power branch 120 is, and the closer the values ​​of the first inductor L1 and the second inductor L2 are, when designing the circuit, the size design difference between the first inductor L1 and the second inductor L2 is smaller, which is conducive to the miniaturization design of the circuit; if the value difference between the first inductor L1 and the second inductor L2 is large, the size design difference between the two inductors is large, which is not conducive to the miniaturization design of the circuit.

[0054] In this embodiment, the one-to-two sub-branch includes the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the fifth inductor L5, the sixth inductor L6 and the second isolation resistor R2. One end of the sixth capacitor C6 is connected to the target port, one end of the fifth inductor L5 and one end of the sixth inductor L6, and the other end of the fifth inductor L5 is connected to one end of the second isolation resistor R2, one end of the seventh capacitor C7 and the third output port Term4; the other end of the sixth inductor L6 is connected to the other end of the second isolation resistor R2, one end of the eighth capacitor C8 and the fourth output port Term5; the other end of the sixth capacitor C6, the other end of the seventh capacitor C7 and the other end of the eighth capacitor C8 are grounded.

[0055] Among them, the target port can be understood as the input port Term1 of the one-to-two sub-branch. If the LC power divider 100 is unequally divided at 1:2, the target port is the output port of the branch with an output power ratio of 2; if the LC power divider 100 is unequally divided at 1:4, the target port is the output port of the branch with an output power ratio of 4, and the target port can also be the output port of the two sub-branches with an output power ratio of 2 divided by the branch with an output power ratio of 4 based on the one-to-two sub-branch.

[0056] In this embodiment, the unequal molecular branches can refer to Figure 2 The LC power divider 100 shown in principle implements unequal division.

[0057] If the first power branch 110 has fewer sub-branches than the second power branch 120 , the first power branch 110 further includes a second phase shifter 140 , and the first power branch 110 is connected to the first output port Term2 via the second phase shifter 140 .

[0058] It should be understood that the more sub-branches a branch has, the longer its transmission line is, and the transmission line can be equivalent to a series inductor. Therefore, the more sub-branches a branch has, the greater the inductance of its line, which in turn causes the first power branch 110 and the second power branch 120 to have different phases. In order to make the two branches have the same phase, a second phase shifter needs to be added to the branch with fewer sub-branches.

[0059] In this embodiment, the implementation principle and circuit structure of the second phase shifter are the same as those of the first phase shifter 130 , which will not be described in detail here. The circuit structure and implementation principle of the first phase shifter 130 may be referred to.

[0060] For easier understanding, please refer to Figure 5 , is a circuit structure diagram of a one-to-three LC power divider 100, and now a one-to-three example is used for explanation. Figure 2 Based on the LC power splitter 100 shown, a one-to-two sub-branch 150 and a second phase shifter 140 are added. Since the output power ratio of the first power branch 110 and the second power branch 120 of the one-to-three LC power splitter 100 is 1:2, the second phase shifter 140 is added to the first power branch 110, and the one-to-two sub-branch 150 is added to the second power branch 120.

[0061] Understandably, if Figure 2 The LC power divider 100 shown is unequally divided at 1:2, so the first power branch 110 includes a first inductor L1, a second capacitor C2 and a second phase shifter 140, and the second power branch 120 includes a second inductor L2, a second capacitor C2 and a one-to-two sub-branch 150.

[0062] Among them, one end of the first inductor L1 and one end of the second inductor L2 are both connected to one end of the first capacitor C1, the other end of the first inductor L1 is connected to one end of the second capacitor C2 and one end of the second phase shifter 140, and the other end of the second phase shifter 140 is connected to the first output port Term2. The other end of the second inductor L2 is connected to one end of the third capacitor C3 and one end of the one-to-two sub-branch 150, and the other end of the one-to-two sub-branch 150 is connected to the two output ports respectively; the other end of the second capacitor C2 and the other end of the third capacitor C3 are both grounded.

[0063] It should be understood that the second phase shifter 140 and the first phase shifter 130 both include a fourth capacitor C4, a fifth capacitor C5 and a fourth inductor L4. Then, the other end of the first inductor L1 is connected to one end of the fourth capacitor C4 and one end of the fourth inductor L4, the other end of the fourth inductor L4 is connected to one end of the fifth capacitor C5 and the first output port Term2, and the other end of the fourth capacitor C4 and the other end of the fifth capacitor C5 are grounded.

[0064] In this embodiment, the values ​​of the fourth capacitor C4 and the fifth capacitor C5 can be set to 100 pF, and the value of the fourth inductor L4 can be set to 430 nH.

[0065] One end of the sixth capacitor C6 of the one-to-two sub-branch 150 is connected to the other end of the second inductor L2, one end of the fifth inductor L5, and one end of the sixth inductor L6; the other end of the fifth inductor L5 is connected to one end of the second isolation resistor R2, one end of the seventh capacitor C7, and the third output port Term4; the other end of the sixth inductor L6 is connected to the other end of the second isolation resistor R2, one end of the eighth capacitor C8, and the fourth output port Term5; the other end of the sixth capacitor C6, the other end of the seventh capacitor C7, and the other end of the eighth capacitor C8 are all grounded.

[0066] The other end of the second inductor L2 can be understood as the target port, that is, Figure 2 The second output port Term3 in is the target port. The one-to-two sub-branch 150 is used to Figure 2 The output power with a ratio of 2 generated by the second power branch 120 is equally divided into two output powers with a ratio of 1:1.

[0067] In this embodiment, the value of the sixth capacitor C6 can be set to 330pF, the values ​​of the fifth inductor L5 and the sixth inductor L6 can be set to 0.82uH, the value of the second isolation resistor R2 can be set to 100 ohms, and the values ​​of the seventh capacitor C7 and the eighth capacitor C8 can be set to 150pF.

[0068] In order to reduce the reflection of the first output port Term2, a third inductor L3 is further provided in the first power branch 110. The first inductor L1 is connected to the second phase shifter 140 via the third inductor L3, that is, the first inductor L1 is connected to one end of the fourth capacitor C4 and one end of the fourth inductor L4 via the third inductor L3.

[0069] It should be understood that Figure 5 The third inductor L3 added in Figure 3 The principle of the third inductor L3 added in the embodiment is the same.

[0070] In this embodiment, the value of the third inductor L3 can be set to 390 nH.

[0071] Please refer to Figure 6 , which is a simulation result diagram of the one-to-three LC power divider 100, Figure 6 From top to bottom are the insertion loss curve of each branch, the return loss curve of each port, the isolation curve of each branch, and the phase curve of each branch. Figure 6 All indicators are very good and consistent with the theory.

[0072] In summary, an LC power divider provided in an embodiment of the present invention includes a first power branch, a second power branch and a first capacitor, the input port is connected to one end of the first power branch and one end of the second power branch respectively through one end of the first capacitor, the other end of the first capacitor is grounded, the other end of the first power branch is connected to the first output port, and the other end of the second power branch is connected to the second output port; the first power branch includes a first inductor and a second capacitor, the second power branch includes a second inductor and a third capacitor, one end of the first inductor and one end of the second inductor are both connected to one end of the first capacitor, the other end of the first inductor and one end of the second capacitor are both connected to the one output port, the other end of the second inductor is connected to one end of the third capacitor and the second output port, and the other end of the second capacitor and the other end of the third capacitor are both grounded; if the ratio of the output power of the first output port to the output power of the second output port is M:N, then the ratio of the value of the first inductor to the value of the second inductor is N±n:M; wherein N and M are positive integers greater than or equal to 1 and N is not equal to M, and n is less than 1. By setting the inductance ratio of the two branches of the LC power divider, the output power ratio distribution of the two branches is achieved, thereby meeting the needs of unequal division and odd-numbered division.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0074] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. An LC power divider, characterized in that: The invention comprises a first power branch, a second power branch, a first capacitor and a first isolation resistor, wherein an input port is respectively connected to one end of the first power branch and one end of the second power branch through one end of the first capacitor, the other end of the first capacitor is grounded, the other end of the first power branch is connected to a first output port, the other end of the second power branch is connected to a second output port, one end of the first isolation resistor is connected to the first power branch, and the other end of the first isolation resistor is connected to the second power branch; The first power branch includes a first inductor and a second capacitor, the second power branch includes a second inductor and a third capacitor, one end of the first inductor and one end of the second inductor are both connected to one end of the first capacitor, the other end of the first inductor is connected to one end of the second capacitor and the first output port, the other end of the second inductor is connected to one end of the third capacitor and the second output port, and the other end of the second capacitor and the other end of the third capacitor are both grounded; If the ratio of the output power of the first output port to the output power of the second output port is M:N, then the ratio of the value of the first inductor to the value of the second inductor is N±n:M; wherein N and M are positive integers greater than 1 and N is not equal to M, and n is less than 1.

2. The LC power divider according to claim 1, characterized in that: The value of the second capacitor is calculated based on the operating frequency of the LC power divider and the value of the first inductor; The value of the third capacitor is calculated based on the operating frequency and the value of the second inductor.

3. The LC power divider according to claim 1, characterized in that: If M is smaller than N, the first power branch further includes a third inductor, and the other end of the first inductor is connected to the first output port through the third inductor.

4. The LC power divider according to claim 3, characterized in that: The second power branch further includes a first phase shifter, and the second inductor is connected to the second output port through the first phase shifter.

5. The LC power divider according to claim 4, characterized in that: The first phase shifter includes a fourth capacitor, a fifth capacitor and a fourth inductor, the other end of the second inductor is connected to one end of the fourth capacitor and one end of the fourth inductor, the other end of the fourth inductor is connected to one end of the fifth capacitor and the second output port, and the other end of the fourth capacitor and the other end of the fifth capacitor are grounded.

6. The LC power divider according to claim 1, characterized in that: The value of the first isolation resistor is calculated based on the impedance of the input port, the impedance of the first output port, the impedance of the second output port, and the ratio of the output power of the first output port to the output power of the second output port.

7. The LC power divider according to claim 1, characterized in that: If M is an odd number, the first power branch divides the output power into M parts based on the unequal sub-branches and the one-to-two sub-branches.

8. The LC power divider according to claim 7, characterized in that: If N is an even number, the second power branch divides the output power into N parts based on the one-to-two sub-branches.

9. The LC power divider according to claim 8, characterized in that: If the number of sub-branches of the first power branch is less than that of the second power branch, the first power branch further includes a second phase shifter, and the first power branch is connected to the first output port via the second phase shifter.

10. A radio frequency power module, characterized in that: Comprising the LC power divider as described in any one of claims 1-9.

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