Broadband power divider comprising multi-inductance isolation network

Abstract

The invention relates to the technical field of radio frequency microwaves, and provides a broadband power divider comprising a multi-inductor isolation network, the broadband power divider comprises a substrate, the substrate is provided with a single-stage power distribution network, and the single-stage power distribution network comprises a first radio frequency component, a second radio frequency component, a first input end, a second input end, a first output end, a second output end and an isolation network; one end of the first radio frequency component is connected with the first input end, and the other end of the first radio frequency component is connected with one end of the isolation network and the first output end; one end of the second radio frequency component is connected with the second input end, and the other end of the second radio frequency component is connected with the other end of the isolation network and the second output end; the isolation network is a double-inductor isolation network or a four-inductor isolation network. The multi-inductor isolation network is used for improving the matching bandwidth of the odd mode, and the isolation bandwidth between the output ports of the power divider is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency microwave technology, and in particular to a broadband power distributor comprising a multi-inductor isolation network. Background Art

[0002] Power dividers are widely used in communications, broadcasting, radar and other fields. Among them, the Wilkinson power divider is widely used in various circuits due to its simple structure and good matching and isolation performance at the target frequency.

[0003] In the performance indicators of Wilkinson power dividers, the isolation bandwidth between output ports is usually determined by the matching bandwidth of even mode and odd mode, where the performance of even mode depends on the transmission line, and the performance of odd mode depends on the structure of the isolation branch. In traditional Wilkinson power dividers, the isolation branch only includes resistors. Although the structure is relatively simple, it will cause a large gap between the matching bandwidth of odd mode and the matching bandwidth of even mode, resulting in a smaller isolation bandwidth between output ports, and then a smaller working bandwidth of the power divider. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a broadband power divider including a multi-inductor isolation network to achieve widening of the working bandwidth of the power divider.

[0005] The present invention provides a broadband power distributor including a multi-inductor isolation network, including a substrate, wherein the substrate is provided with a single-stage power distribution network, wherein the single-stage power distribution network includes a first radio frequency component, a second radio frequency component, a first input end, a second input end, a first output end, a second output end and an isolation network; one end of the first radio frequency component is connected to the first input end, and the other end of the first radio frequency component is connected to one end of the isolation network and the first output end; one end of the second radio frequency component is connected to the second input end, and the other end of the second radio frequency component is connected to the other end of the isolation network and the second output end; wherein the isolation network is a dual-inductor isolation network or a quad-inductor isolation network.

[0006] According to the present invention, a broadband power divider including a multi-inductor isolation network is provided, wherein the dual-inductor isolation network includes a first inductor, a second inductor, a first resistor and a first capacitor; one end of the first inductor is connected to one end of an external circuit, and one end of the second inductor is connected to the other end of the external circuit; one end of the first capacitor is connected to the other end of the first inductor and one end of the first resistor, and the other end of the first capacitor is connected to the other end of the second inductor and the other end of the first resistor.

[0007] According to a broadband power divider including a multi-inductor isolation network provided by the present invention, the first inductor and the second inductor are coupled inductors. Alternatively, the first inductor and the second inductor are uncoupled inductors.

[0008] According to the present invention, a broadband power distributor including a multi-inductor isolation network is provided, wherein the four-inductor isolation network includes a third inductor, a fourth inductor, a fifth inductor, a sixth inductor, a second resistor and a second capacitor; one end of the third inductor is connected to one end of an external circuit, and one end of the sixth inductor is connected to the other end of the external circuit; one end of the second capacitor is connected to the other end of the third inductor and one end of the fourth inductor, the other end of the second capacitor is connected to the other end of the sixth inductor and one end of the fifth inductor, the other end of the fourth inductor is connected to one end of the second resistor, and the other end of the fifth inductor is connected to the other end of the second resistor; wherein the third inductor is coupled to the fourth inductor, and the fifth inductor is coupled to the sixth inductor.

[0009] According to a broadband power divider including a multi-inductor isolation network provided by the present invention, the first RF component and the second RF component are distributed parameter components or lumped parameter components, and the electrical length of the first RF component and the second RF component is .

[0010] According to a broadband power divider including a multi-inductor isolation network provided by the present invention, the substrate is provided with a secondary power distribution network connected to the single-stage power distribution network, the secondary power distribution network includes a sub-single-stage power distribution network or multiple sub-single-stage power distribution networks connected in series, the sub-single-stage power distribution network includes a sub-first RF component, a sub-second RF component, a sub-first input end, a sub-second input end, a sub-first output end, a sub-second output end and a sub-isolation network; one end of the sub-first RF component is connected to the sub-first input end, and the other end of the sub-first RF component is connected to one end of the sub-isolation network and the sub-first output end; one end of the sub-second RF component is connected to the sub-second input end, and the other end of the sub-second RF component is connected to the other end of the sub-isolation network and the sub-second output end; wherein the sub-isolation network is a dual-inductor isolation network, a non-coupled pure inductor isolation network, a capacitor isolation network or a four-inductor isolation network.

[0011] According to a broadband power divider including a multi-inductor isolation network provided by the present invention, the sub-first input terminal and the sub-second input terminal of the sub-single-stage power distribution network closest to the single-stage power distribution network in the secondary power distribution network are respectively connected to the first output terminal and the second output terminal in sequence, and the sub-first input terminal and the sub-second input terminal of the sub-single-stage power distribution network farthest from the single-stage power distribution network in the secondary power distribution network are respectively connected to the sub-first output terminal and the sub-second output terminal of the adjacent sub-single-stage power distribution network in sequence.

[0012] According to a broadband power divider including a multi-inductor isolation network provided by the present invention, in two adjacent sub-single-stage power distribution networks, the sub-first input terminal and the sub-second input terminal of the sub-single-stage power distribution network far away from the single-stage power distribution network are respectively connected in sequence to the sub-first output terminal and the sub-second output terminal of the sub-single-stage power distribution network close to the single-stage power distribution network.

[0013] According to a broadband power divider including a multi-inductor isolation network provided by the present invention, the uncoupled pure inductor isolation network includes a seventh inductor, an eighth inductor and a third resistor; one end of the seventh inductor is connected to one end of an external circuit, one end of the eighth inductor is connected to the other end of the external circuit, and the seventh inductor and the eighth inductor are not coupled; the other end of the seventh inductor is connected to one end of the third resistor, and the other end of the eighth inductor is connected to the other end of the third resistor.

[0014] According to the present invention, a broadband power divider including a multi-inductor isolation network is provided, wherein the capacitive isolation network includes a third capacitor and a fourth resistor; one end of the third capacitor is connected to one end of an external circuit and one end of the fourth resistor, and the other end of the third capacitor is connected to the other end of the external circuit and the other end of the fourth resistor.

[0015] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: The present invention increases the matching bandwidth of the power divider by introducing a dual-inductor isolation network and a quad-inductor isolation network, so that the matching performance of the power divider under odd-mode and even-mode analysis methods is more consistent, thereby improving the isolation bandwidth.

[0016] Compared with the traditional Wilkinson power divider, the present invention greatly improves the isolation bandwidth between output ports while ensuring that the input port matching is not affected, thereby reducing interference and crosstalk between ports and improving the signal quality of the system. At the same time, better isolation can effectively suppress the influence of reverse reflection signals and improve the purity of the signal.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1It is a structural schematic diagram of a single-stage power distribution network of a broadband power distributor including a multi-inductor isolation network provided by the present invention.

[0020] Figure 2 It is a structural schematic diagram of a dual-inductor isolation network of a broadband power distributor including a multi-inductor isolation network provided by the present invention.

[0021] Figure 3 It is a structural schematic diagram of a four-inductor isolation network of a broadband power distributor including a multi-inductor isolation network provided by the present invention.

[0022] Figure 4 It is a structural schematic diagram of a single-stage power distribution network with a secondary power distribution network of a broadband power divider including a multi-inductor isolation network provided by the present invention.

[0023] Figure 5 It is a structural schematic diagram of a non-coupled pure inductive isolation network of a broadband power distributor including a multi-inductive isolation network provided by the present invention.

[0024] Figure 6 The present invention provides a schematic diagram of a capacitive isolation network of a broadband power distributor including a multi-inductor isolation network.

[0025] Figure 7 It is a simulation result diagram of a single-stage power distribution network of a broadband power distributor including a multi-inductor isolation network provided by the present invention.

[0026] Figure 8 It is a simulation result diagram of a single-stage power distribution network with a secondary power distribution network of a broadband power distributor including a multi-inductor isolation network provided by the present invention.

[0027] Reference numerals: 1. Isolation network; 2. Sub-isolation network; 11. First RF component; 12. Second RF component; 13. Sub-first RF component; 14. Sub-second RF component; 21. First inductor; 22. Second inductor; 23. First resistor; 24. First capacitor; 31. Third inductor; 32. Fourth inductor; 33. Fifth inductor; 34. Sixth inductor; 35. Second resistor; 36. Second capacitor; 41. First port; 42. Second port; 4 3. The third port; 51. The seventh inductor; 52. The eighth inductor; 53. The third resistor; 61. The third capacitor; 62. The fourth resistor; 101. The first input terminal; 102. The second input terminal; 103. The first output terminal; 104. The second output terminal; 105. The sub-first input terminal; 106. The sub-second input terminal; 107. The sub-first output terminal; 108. The sub-second output terminal; 200. The secondary power distribution network; 300. The sub-single-stage power distribution network. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme in the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second” and “third” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] Example: See also Figures 1 to 8 In this embodiment, a broadband power divider including a multi-inductor isolation network is provided.

[0033] Combine the following Figure 1A broadband power divider including a multi-inductor isolation network provided in an embodiment of the present invention is described, wherein a single-stage power distribution network is provided on a substrate, and the single-stage power distribution network includes a first RF component 11, a second RF component 12, a first input terminal 101, a second input terminal 102, a first output terminal 103, a second output terminal 104, and an isolation network 1. Specifically, one end of the first RF component 11 is connected to the first input terminal 101, and the other end of the first RF component 11 is connected to one end of the isolation network 1 and the first output terminal 103; one end of the second RF component 12 is connected to the second input terminal 102, and the other end of the second RF component 12 is connected to the other end of the isolation network 1 and the second output terminal 104; the isolation network 1 can be a dual-inductor isolation network or a quad-inductor isolation network. Among them, the dual-inductor isolation network and the quad-inductor isolation network can improve the bandwidth of the power divider.

[0034] Furthermore, the substrate is provided with a first port 41, a second port 42 and a third port 43 for use as an input port and an output port; wherein the first port 41 is an input port, and the second port 42 and the third port 43 are output ports. The first port 41 is connected to the first input end 101 and the second input end 102, the second port 42 is connected to the first output end 103, and the third port 43 is connected to the second output end 104.

[0035] Furthermore, Figure 2 It is a structural schematic diagram of a dual-inductor isolation network. The dual-inductor isolation network includes a first inductor 21, a second inductor 22, a first resistor 23 and a first capacitor 24; wherein, one end of the first inductor 21 is connected to one end of the external circuit, and one end of the second inductor 22 is connected to the other end of the external circuit. Wherein, when the inductance value of the inductor is large and it is difficult to stably couple in the process, the first inductor 21 and the second inductor 22 are uncoupled inductors, thereby improving the stability of the circuit, otherwise, the first inductor 21 and the second inductor 22 are coupled inductors, thereby reducing the circuit size, one end of the first capacitor 24 is connected to the other end of the first inductor 21 and one end of the first resistor 23, and the other end of the first capacitor 24 is connected to the other end of the second inductor 22 and the other end of the first resistor 23. The calculation method of the inductance value of the first inductor 21 and the second inductor 22 and the capacitance value of the first capacitor 24 in the dual-inductor isolation network is as follows: For the first RF component 11 and the second RF component 12, the RF component Y parameter (Y 21 T ) -1 The real part of With the imaginary part The expression is: Among them, the characteristic admittance of RF components is the reciprocal of the characteristic impedance of the first RF component 11 and the second RF component 12, and the characteristic admittance of the RF component Obtained through actual measurement, the inductance characteristic is the reciprocal of the characteristic impedance of the first port 41, the second port 42 and the third port 43, and the inductance characteristic admittance Determined by the parameters of the selected port; Normalized frequency is the operating frequency of the power divider and center frequency The ratio of It needs to be determined according to the working conditions of the power divider.

[0036] According to the internal circuit structure of the dual inductor isolation network and the impedance expression of the components, its port impedance can be obtained , where R is the resistance value of the first resistor 23, L is the inductance value of the first inductor 21 and the second inductor 22, and C is the capacitance value of the first capacitor 24. is an imaginary unit: Then we can analyze the isolation network Y parameter The real part of With the imaginary part The expression is: Since the power divider is in pursuit of = When (Y 21 T ) -1 -(-(Y 21 I ) -1 )=0, so according to the RF component Y parameter (Y 21 T ) -1 The real part of With the imaginary part Expression of and isolation network Y parameter The real part of With the imaginary part The expression of can obtain the following relationship: It can be seen that there are three unknowns here, but only two equations are involved, so the resistance value R of the first resistor 23 is first selected, and then it can be obtained: Furthermore, Figure 3The schematic diagram of the structure of the four-inductor isolation network. The four-inductor isolation network includes a third inductor 31, a fourth inductor 32, a fifth inductor 33, a sixth inductor 34, a second resistor 35 and a second capacitor 36; wherein one end of the third inductor 31 is connected to one end of the external circuit, and one end of the sixth inductor 34 is connected to the other end of the external circuit; one end of the second capacitor 36 is connected to the other end of the third inductor 31 and one end of the fourth inductor 32, and the other end of the second capacitor 36 is connected to the other end of the sixth inductor 34 and one end of the fifth inductor 33; one end of the second resistor 35 is connected to the other end of the fourth inductor 32, and the other end of the second resistor 35 is connected to the other end of the fifth inductor 33; wherein the third inductor is coupled to the fourth inductor, the fifth inductor is coupled to the sixth inductor, and the coupling coefficient is k. The four-inductor isolation network can greatly broaden the working bandwidth of the power divider by comprehensively using inductors, resistors and capacitors.

[0037] Furthermore, Figure 4 The present invention is a structural diagram of a single-stage power distribution network with a secondary power distribution network. A secondary power distribution network 200 is also provided on the substrate, and the secondary power distribution network 200 includes a sub-single-stage power distribution network 300, and the sub-single-stage power distribution network 300 includes a sub-first RF component 13, a sub-second RF component 14, a sub-first input terminal 105, a sub-second input terminal 106, a sub-first output terminal 107, a sub-second output terminal 108 and a sub-isolation network 2; one end of the sub-first RF component 13 is connected to the sub-first input terminal 105, and the other end of the sub-first RF component 13 is connected to one end of the sub-isolation network 2 and the sub-first output terminal 107; one end of the sub-second RF component 14 is connected to the sub-second input terminal 106, and the other end of the sub-second RF component 14 is connected to the other end of the sub-isolation network 2 and the sub-second output terminal 108; wherein the sub-isolation network 2 is a dual-inductor isolation network, a non-coupled pure inductor isolation network, a capacitor isolation network or a four-inductor isolation network.

[0038] Further, a plurality of sub-single-stage power distribution networks 300 are connected in series in sequence and then connected to the single-stage power distribution network. Among them, the sub-first input terminal 105 and the sub-second input terminal 106 of the sub-single-stage power distribution network 300 closest to the single-stage power distribution network in the secondary power distribution network 200 are respectively connected to the first output terminal 103 and the second output terminal 104 of the single-stage power distribution network in sequence; the sub-first input terminal 105 and the sub-second input terminal 106 of the sub-single-stage power distribution network 300 farthest from the single-stage power distribution network in the secondary power distribution network 200 are respectively connected to the sub-first output terminal 107 and the sub-second output terminal 108 of the adjacent sub-single-stage power distribution network 300 in sequence. Among them, when the secondary power distribution network 200 contains only one sub-single-stage power distribution network 300, the sub-first input terminal 105 and the sub-second input terminal 106 of the sub-single-stage power distribution network 300 are respectively connected to the first output terminal 103 and the second output terminal 104 of the single-stage power distribution network in sequence.

[0039] Further, when the secondary power distribution network 200 includes a plurality of sub-single-stage power distribution networks 300, in two adjacent sub-single-stage power distribution networks 300, the sub-first input terminal 105 and the sub-second input terminal 106 of the sub-single-stage power distribution network 300 far away from the single-stage power distribution network are respectively connected in sequence with the sub-first output terminal 107 and the sub-second output terminal 108 of the sub-single-stage power distribution network 300 close to the single-stage power distribution network. By connecting the secondary power distribution network 200 and the single-stage power distribution network, the isolation performance and bandwidth of the power divider can be greatly improved. The resistance value of the resistor in the sub-isolation network 2 of the sub-single-stage power distribution network 300 should be increased step by step backward.

[0040] Further, the sub-first output terminal 107 and the sub-second output terminal 108 of the sub-single-stage power distribution network 300 farthest from the single-stage power distribution network in the secondary power distribution network 200 are respectively connected to the second port 42 and the third port 43 in sequence, and the first port 41 is connected to the first input terminal 101 and the second input terminal 102 of the single-stage power distribution network. When the secondary power distribution network 200 includes only one sub-single-stage power distribution network 300, the sub-first output terminal 107 and the sub-second output terminal 108 of the sub-single-stage power distribution network 300 are respectively connected to the second port 42 and the third port 43 in sequence.

[0041] Furthermore, Figure 5It is a structural schematic diagram of an uncoupled pure inductance isolation network; the uncoupled pure inductance isolation network includes a seventh inductor 51, an eighth inductor 52 and a third resistor 53; one end of the seventh inductor 51 is connected to one end of the external circuit, one end of the eighth inductor 52 is connected to the other end of the external circuit, and the seventh inductor 51 and the eighth inductor 52 are not coupled; the other end of the seventh inductor 51 is connected to one end of the third resistor 53, and the other end of the eighth inductor 52 is connected to the other end of the third resistor 53.

[0042] Furthermore, Figure 6 : is a schematic diagram of the structure of the capacitor isolation network; the capacitor isolation network includes a third capacitor 61 and a fourth resistor 62; one end of the third capacitor 61 is connected to one end of the external circuit and one end of the fourth resistor 62, and the other end of the third capacitor 61 is connected to the other end of the external circuit and the other end of the fourth resistor 62. In this embodiment, the uncoupled pure inductive isolation network and the capacitor isolation network can conveniently adjust the parameters of the secondary power distribution network 200.

[0043] Furthermore, the first RF component 11, the second RF component 12, the sub-first RF component 13 and the sub-second RF component 14 can be implemented by distributed parameter elements or lumped parameter elements, and the first RF component 11, the second RF component 12, the sub-first RF component 13 and the sub-second RF component 14 can transmit RF signals. The distributed parameter elements include microstrip lines, strip lines, waveguides, coplanar waveguides, slot lines, fin lines, suspended strip lines, optical waveguides and other distributed parameter elements. In addition, a first RF component 11, a second RF component 12, a sub-first RF component 13 and a sub-second RF component 14 can be obtained by combining multiple distributed parameter elements; the lumped parameter elements include a high-pass π-type network, a low-pass π-type network, a high-pass L-type network, a network cascaded by any combination of the above networks and other lumped parameter networks. In addition, a first RF component 11, a second RF component 12, a sub-first RF component 13 and a sub-second RF component 14 can be obtained by combining multiple lumped parameter elements, and the electrical lengths of the first RF component 11, the second RF component 12, the sub-first RF component 13 and the sub-second RF component 14 are all .

[0044] The present invention also simulates a broadband power divider including a multi-inductor isolation network. , RF component characteristic admittance Selected as 1 / 70.07, inductance characteristic admittance Selected as 0.02. Experiment 1 simulates a single-stage power distribution network including a dual-inductor isolation network, wherein the resistance value of the first resistor 23 is 271Ω, the inductance values ​​of the first inductor 21 and the second inductor 22 are both 520pH, the capacitance value of the first capacitor 24 is 38fF, and S(2,3) is the isolation between the second port 42 and the third port 43. Experiment 2 simulates a single-stage power distribution network including a four-inductor isolation network, wherein the resistance value of the second resistor 35 is 550Ω, the inductance values ​​of the third inductor 31, the fourth inductor 32, the fifth inductor 33, and the sixth inductor 34 are all 565pH, and the third inductor 31 and the fourth inductor 32 are coupled to each other, and the fifth inductor 33 and the sixth inductor 34 are coupled to each other, and the coupling coefficient k is 0.65, and the capacitance value of the second capacitor 36 is 59fF, Figure 7 The simulation results of Experiment 1, Experiment 2 and the traditional power divider are shown in Figure 2. Figure 7 It can be seen that the single-stage power distribution network including the four-inductor isolation network and the single-stage power distribution network including the double-inductor isolation network can both obtain a bandwidth much higher than that of the traditional power divider.

[0045] Experiments 3 and 4 simulated the secondary power distribution network 200 connected to the single-stage power distribution network and including two sub-single-stage power distribution networks 300; wherein, the isolation network 1 in the single-stage power distribution network is a dual-inductor isolation network, the sub-isolation network 2 in Experiment 3 is a non-coupled pure inductor isolation network, and the sub-isolation network 2 in Experiment 4 is a capacitive isolation network. Specifically, in Experiment 3, the resistance value of the first resistor 23 is 95Ω, the resistance value of the third resistor 53 is 135Ω and 197Ω respectively, the inductance value of the first inductor 21 and the second inductor 22 is 1604pH, the inductance value of the seventh inductor 51 and the eighth inductor 52 is 1798pH and 3404pH respectively, and the capacitance value of the first capacitor 24 is 253fF. In Experiment 4, the resistance value of the first resistor 23 is 62Ω, the resistance values ​​of the fourth resistor 62 are 140Ω and 463Ω respectively, the inductance values ​​of the first inductor 21 and the second inductor 22 are 3462pH, the capacitance value of the first capacitor 24 is 351fF, and the capacitance value of the third capacitor 61 is 295fF and 135fF respectively.

[0046] Experiment 5 simulates the secondary power distribution network 200 connected to the single-stage power distribution network and including two sub-single-stage power distribution networks 300; wherein, the sub-isolation network 2 of the sub-single-stage power distribution network 300 is a capacitor isolation network, and the isolation network 1 in the single-stage power distribution network is a four-inductor isolation network. Specifically, in the isolation network 1 of Experiment 5, the resistance value of the second resistor 35 is 70Ω, the resistance value of the fourth resistor 62 is 143Ω and 1070Ω respectively, the inductance value of the third inductor 31, the fourth inductor 32, the fifth inductor 33, and the sixth inductor 34 is 3647pH, the capacitance of the second capacitor 36 is 351fF, and the capacitance value of the third capacitor 61 is 295fF and 135fF respectively. Figure 8 The simulation results of Experiment 3, Experiment 4, Experiment 5 and the traditional power divider are shown in Figure 2. Figure 8 It can be seen that the secondary power distribution network 200 including two sub-single-stage power distribution networks 300 can obtain a bandwidth much higher than that of the traditional power divider.

[0047] The results of the above simulation data show that the broadband power divider including a multi-inductor isolation network provided by the present invention has a large bandwidth.

[0048] In summary, the broadband power divider provided by the present invention including a multi-inductor isolation network can effectively increase the matching bandwidth of the power divider, thereby reducing interference and crosstalk between ports, improving the signal quality of the system, and at the same time can effectively suppress the influence of reverse reflection signals and improve the purity of the signal.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A broadband power divider comprising a multi-inductor isolation network, characterized in that: It includes a substrate, and the substrate is provided with a single-stage power distribution network, wherein the single-stage power distribution network includes a first radio frequency component, a second radio frequency component, a first input end, a second input end, a first output end, a second output end and an isolation network; one end of the first radio frequency component is connected to the first input end, and the other end of the first radio frequency component is connected to one end of the isolation network and the first output end; one end of the second radio frequency component is connected to the second input end, and the other end of the second radio frequency component is connected to the other end of the isolation network and the second output end; wherein the isolation network is a dual-inductor isolation network or a quad-inductor isolation network.

2. A broadband power divider comprising a multi-inductor isolation network according to claim 1, characterized in that: The dual-inductor isolation network includes a first inductor, a second inductor, a first resistor and a first capacitor; one end of the first inductor is connected to one end of an external circuit, and one end of the second inductor is connected to the other end of the external circuit; one end of the first capacitor is connected to the other end of the first inductor and one end of the first resistor, and the other end of the first capacitor is connected to the other end of the second inductor and the other end of the first resistor.

3. A broadband power divider comprising a multi-inductor isolation network according to claim 2, characterized in that: The first inductor and the second inductor are coupled inductors. Alternatively, the first inductor and the second inductor are uncoupled inductors.

4. A broadband power divider comprising a multi-inductor isolation network according to claim 1, characterized in that: The four-inductor isolation network includes a third inductor, a fourth inductor, a fifth inductor, a sixth inductor, a second resistor and a second capacitor; one end of the third inductor is connected to one end of the external circuit, and one end of the sixth inductor is connected to the other end of the external circuit; one end of the second capacitor is connected to the other end of the third inductor and one end of the fourth inductor, the other end of the second capacitor is connected to the other end of the sixth inductor and one end of the fifth inductor, the other end of the fourth inductor is connected to one end of the second resistor, and the other end of the fifth inductor is connected to the other end of the second resistor; wherein the third inductor is coupled to the fourth inductor, and the fifth inductor is coupled to the sixth inductor.

5. A broadband power divider comprising a multi-inductor isolation network according to claim 1, characterized in that: The first RF component and the second RF component are distributed parameter components or lumped parameter components, and the electrical lengths of the first RF component and the second RF component are .

6. A broadband power divider comprising a multi-inductor isolation network according to claim 1, characterized in that: The substrate is provided with a secondary power distribution network connected to the single-stage power distribution network, the secondary power distribution network includes a sub-single-stage power distribution network or multiple sub-single-stage power distribution networks connected in series, the sub-single-stage power distribution network includes a sub-first RF component, a sub-second RF component, a sub-first input end, a sub-second input end, a sub-first output end, a sub-second output end and a sub-isolation network; one end of the sub-first RF component is connected to the sub-first input end, and the other end of the sub-first RF component is connected to one end of the sub-isolation network and the sub-first output end; one end of the sub-second RF component is connected to the sub-second input end, and the other end of the sub-second RF component is connected to the other end of the sub-isolation network and the sub-second output end; wherein the sub-isolation network is a dual-inductor isolation network, a non-coupled pure inductor isolation network, a capacitor isolation network or a four-inductor isolation network.

7. A broadband power divider comprising a multi-inductor isolation network according to claim 6, characterized in that: The sub-first input terminal and the sub-second input terminal of the sub-single-stage power distribution network closest to the single-stage power distribution network in the secondary power distribution network are respectively connected to the first output terminal and the second output terminal in sequence, and the sub-first input terminal and the sub-second input terminal of the sub-single-stage power distribution network farthest from the single-stage power distribution network in the secondary power distribution network are respectively connected to the sub-first output terminal and the sub-second output terminal of the adjacent sub-single-stage power distribution network in sequence.

8. A broadband power divider comprising a multi-inductor isolation network according to claim 6, characterized in that: In two adjacent sub-single-stage power distribution networks, the sub-first input terminal and the sub-second input terminal of the sub-single-stage power distribution network far away from the single-stage power distribution network are respectively connected to the sub-first output terminal and the sub-second output terminal of the sub-single-stage power distribution network close to the single-stage power distribution network.

9. A broadband power divider comprising a multi-inductor isolation network according to claim 6, characterized in that: The uncoupled pure inductance isolation network includes a seventh inductor, an eighth inductor and a third resistor; one end of the seventh inductor is connected to one end of the external circuit, one end of the eighth inductor is connected to the other end of the external circuit, and the seventh inductor and the eighth inductor are not coupled; the other end of the seventh inductor is connected to one end of the third resistor, and the other end of the eighth inductor is connected to the other end of the third resistor.

10. The broadband power divider comprising a multi-inductor isolation network according to claim 6, characterized in that: The capacitor isolation network includes a third capacitor and a fourth resistor; one end of the third capacitor is connected to one end of the external circuit and one end of the fourth resistor, and the other end of the third capacitor is connected to the other end of the external circuit and the other end of the fourth resistor.

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