A combiner

Abstract

The present application discloses a combiner. The combiner includes at least a first filter, a second filter, a first fly rod, a first fly rod and an orthogonal bridge, wherein one end of the first fly rod is connected to the output end of the first filter, one end of the second fly rod is connected to the output end of the second filter, and the first signal input end of the orthogonal bridge is connected to the other end of the first fly rod, and the second signal input end of the orthogonal bridge is connected to the other end of the second fly rod. Thus, the coupling of the filter and the orthogonal bridge can be achieved through the first fly rod and the second fly rod, which is convenient for disassembly and maintenance of the combiner, improves the flexibility of the combiner configuration, and can achieve transparent transmission of low-frequency signals between the two output ports of the orthogonal bridge, thereby improving the adaptive transmission of signals.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a combiner. Background Art

[0002] In mobile communication systems, the required signal is modulated to form a modulated signal, which is carried on a high-frequency carrier signal and transmitted into the air through a transmitting antenna. The signal in the air is received by a receiving antenna. The signal received by the receiving antenna includes not only the required signal, but also harmonics and noise signals of other frequencies. The signal received by the receiving antenna needs to be filtered out by a combiner to remove unnecessary harmonics and noise signals.

[0003] In the prior art, a direct bridge and a filter are usually in direct contact, and part of the bridge structure may be directly extended into the resonant cavity. This structure is not convenient for disassembly and maintenance of the entire combiner, and has low configuration flexibility. Summary of the invention

[0004] The main purpose of this application is to provide a combiner to solve the technical problems in the prior art.

[0005] In order to solve the above problems, the present application provides a combiner, which includes:

[0006] At least a first filter and a second filter; a first flying rod, one end of which is connected to the output end of the first filter; a second flying rod, one end of which is connected to the output end of the second filter; an orthogonal bridge, a first signal input end of which is connected to the other end of the first flying rod, and a second signal input end of which is connected to the other end of the second flying rod.

[0007] In one embodiment, the combiner further includes: a plate body, the at least first filter and the second filter, and the orthogonal bridge are arranged on the plate body; a side wall perpendicular to the plate body extends from the plate body, and the side wall is used to separate the orthogonal bridge and the at least first filter and the second filter, the first flying rod and the second flying rod are fixed to the side wall, and the side wall is provided with a first through hole and a second through hole, the first flying rod is penetrated by the first through hole, and the second flying rod is penetrated by the second through hole.

[0008] In one embodiment, a first groove is provided on the end face of the first signal input end of the orthogonal bridge, and the other end of the first flying rod extends into the first groove and is spaced apart from the side wall of the first groove; a second groove is provided on the end face of the second signal input end of the orthogonal bridge, and the other end of the second flying rod extends into the second groove and is spaced apart from the side wall of the second groove.

[0009] In one embodiment, the first filter is a first cavity filter, the last resonant cavity of the first cavity filter is spaced apart from the one end of the first flying rod, and is located on a side of the first flying rod close to the plate body; the second filter is a second cavity filter, the last resonant cavity of the second cavity filter is spaced apart from the one end of the second flying rod, and is located on a side of the second flying rod close to the plate body.

[0010] In one embodiment, the combiner further includes: a first microstrip line filter, whose output end is connected to the one end of the first flying rod, so as to transmit the first combined signal of the first microstrip line filter and the first cavity filter to the orthogonal bridge through the first flying rod; a second microstrip line filter, whose output end is connected to the one end of the second flying rod, so as to transmit the second combined signal of the second microstrip line filter and the second cavity filter to the orthogonal bridge through the second flying rod.

[0011] In one embodiment, the output end of the first microstrip line in the first microstrip line filter extends into the last resonant cavity of the first cavity filter, the output end of the first microstrip line is spaced apart from the one end of the first flying rod, and is located on the side of the first flying rod away from the last resonant cavity of the first cavity filter; the output end of the second microstrip line in the second microstrip line filter extends into the last resonant cavity of the second cavity filter, the output end of the second microstrip line is spaced apart from the one end of the second flying rod, and is located on the side of the second flying rod away from the last resonant cavity of the second cavity filter.

[0012] In one embodiment, the combiner includes two microstrip line filters and two cavity filters, the two microstrip line filters are symmetrically arranged with the center line of the orthogonal bridge along the width direction as the axis, and the two microstrip line filters are symmetrically arranged with the center line as the axis.

[0013] In one embodiment, the two microstrip line filters are arranged adjacent to each other, the cavity filter and the microstrip line filter are arranged along the length direction of the orthogonal bridge, and the cavity filter is located outside the side of the microstrip line filter along the width direction and the side of the orthogonal bridge along the width direction.

[0014] In one embodiment, the input port of the cavity filter is arranged on the same side as the output port of the orthogonal bridge, and is arranged opposite to the input port of the microstrip line filter.

[0015] In one embodiment, a plastic fixing member is further included, and the microstrip line in the microstrip line filter and the orthogonal bridge are fixed on the board through the plastic fixing member.

[0016] Compared with the prior art, the combiner of the present application includes: at least a first filter, a second filter, a first fly rod, a first fly rod and an orthogonal bridge, one end of the first fly rod is connected to the output end of the first filter, one end of the second fly rod is connected to the output end of the second filter, and the first signal input end of the orthogonal bridge is connected to the other end of the first fly rod, and the second signal input end of the orthogonal bridge is connected to the other end of the second fly rod. Thus, the coupling of the filter and the orthogonal bridge can be achieved through the first fly rod and the second fly rod, which is convenient for the disassembly and maintenance of the combiner, improves the flexibility of the combiner configuration, and can realize the transparent transmission of low-frequency signals between the two output ports of the orthogonal bridge, thereby improving the adaptive transmission of signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a top view of a schematic diagram of the structure of an embodiment of a combiner provided by the present application;

[0019] Figure 2 yes Figure 1 An exploded schematic diagram of an embodiment of a combiner is shown;

[0020] Figure 3 It is a schematic structural diagram of an embodiment of an orthogonal bridge provided in the present application.

[0021] The reference numerals in the accompanying drawings are: combiner 10; first filter 110; first cavity filter 111; first microstrip line filter 112; second filter 120; second cavity filter 121; second microstrip line filter 122; first flying rod 210; second flying rod 220; orthogonal bridge 300; first signal input terminal 310; second signal input terminal 320; first groove 330; second groove 340; first protrusion 350; second protrusion 360; plate body 410; side wall 420; first through hole 421; second through hole 422. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0023] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] See also Figure 1 , Figure 1 It is a schematic structural diagram of an embodiment of the combiner 10 provided in the present application.

[0026] The combiner 10 includes at least a first filter 110 , a second filter 120 , a first flying rod 210 , a second flying rod 220 , and an orthogonal bridge 300 .

[0027] One end of the first flying rod 210 is connected to the output end of the first filter 110, one end of the second flying rod 220 is connected to the output end of the second filter 120, and the first signal input end 310 of the orthogonal bridge 300 is connected to the other end of the first flying rod 210, and the second signal input end 320 is connected to the other end of the second flying rod 220.

[0028] Thus, the coupling of the filter and the orthogonal bridge 300 can be achieved through the first flying rod 210 and the second flying rod 220, which is convenient for the disassembly and maintenance of the combiner 10, improves the flexibility of the configuration of the combiner 10, and can realize the transparent transmission of low-frequency signals between the two output ports of the set orthogonal bridge 300, thereby improving the adaptive transmission of signals.

[0029] The first filter 110 and the second filter 120 may be cavity filters or microstrip line filters.

[0030] The number of the first filter 110 may be one or more, and one first filter 110 or multiple first filters 110 are connected to the first signal input terminal 310 of the orthogonal bridge 300 through the first flying rod 210. The number of the second filter 120 may be one or more, and one second filter 120 or multiple second filters 120 are connected to the second signal input terminal 320 of the orthogonal bridge 300 through the second flying rod 220. Thus, the orthogonal bridge 300 can be connected to multiple groups of filters through the first flying rod 210 and the second flying rod 220 at the same time, that is, multiple groups of filters can share one orthogonal bridge 300, which can reduce the volume of the combiner 10 and reduce the manufacturing cost of the combiner 10.

[0031] The first flying rod 210 and the second flying rod 220 may be cylindrical in shape.

[0032] See also Figure 1-Figure 3 , Figure 2 yes Figure 1 An exploded schematic diagram of an embodiment of the combiner 10 is shown, Figure 3 It is a schematic structural diagram of an embodiment of the orthogonal bridge 300 provided in the present application.

[0033] The combiner 10 further includes a board 410, on which at least the first filter 110, the second filter 120 and the orthogonal bridge 300 are disposed. A side wall 420 extending perpendicular to the board 410 is provided on the board 410, and the side wall 420 is used to separate the orthogonal bridge 300 and at least the first filter 110 and the second filter 120.

[0034] Among them, the side wall 420 can be arranged around the orthogonal bridge 300 to form a bridge accommodating cavity through the side wall 420. By setting the orthogonal bridge 300 in the bridge accommodating cavity, the orthogonal bridge 300 can be protected. At the same time, the signals between the orthogonal bridge 300 and the first filter 110 and the second filter 120 can be isolated to avoid signal crosstalk.

[0035] The first flying rod 210 and the second flying rod 220 are fixed to the side wall 420 , and the side wall 420 is provided with a first through hole 421 and a second through hole 422 . The first flying rod 210 is provided with the first through hole 421 , and the second flying rod 220 is provided with the second through hole 422 .

[0036] The side wall 420 is provided with a first through hole 421 and a second through hole 422 for accommodating the conducting bridge and the first filter 110 and the second filter 120. The first through hole 421 is arranged near the first filter 110 and the first signal input end 310 of the orthogonal bridge 300, and the second through hole 422 is arranged near the second filter 120 and the second signal input end 320 of the orthogonal bridge 300. The first flying rod 210 and the second flying rod 220 can be fixedly arranged in the first through hole 421 and the second through hole 422 respectively through a medium, and are exposed at both ends of the first through hole 421 and the second through hole 422 respectively, so that one end of the first flying rod 210 can be connected to the output end of the first filter 110, and the other end is connected to the first signal input end 310 of the orthogonal bridge 300; one end of the second flying rod 220 can be connected to the output end of the second filter 120, and the other end is connected to the second signal input end 320 of the orthogonal bridge 300.

[0037] Further, a first groove 330 is provided on the end surface of the first signal input end 310 of the orthogonal bridge 300, and the other end of the first flying rod 210 extends into the first groove 330 and is spaced apart from the side wall 420 of the first groove 330. A second groove 340 is provided on the end surface of the second signal input end 320 of the orthogonal bridge 300, and the other end of the second flying rod 220 extends into the second groove 340 and is spaced apart from the side wall 420 of the second groove 340.

[0038] The bridge arm of the orthogonal bridge 300 has a first protrusion 350 and a second protrusion 360 extending outward, wherein the size of the first protrusion 350 is smaller than the size of the second protrusion 360. The extension length of the first protrusion 350 is smaller than the extension length of the second protrusion 360, and the second protrusion 360 is located in the middle area of ​​the orthogonal bridge 300.

[0039] Furthermore, the combiner 10 further includes a plastic fixing (not shown), and the orthogonal bridge 300 is fixed to the plate 410 through the plastic fixing. There may be multiple plastic fixings, through which the orthogonal bridge 300 is passed, and the plastic fixing is connected to the plate 410 to fix the orthogonal bridge 300 to the plate 410. The number of plastic fixings can be set according to actual conditions. In the present embodiment, there are six plastic fixings, and three plastic fixings are respectively arranged on both sides of the center line of the width direction of the orthogonal bridge 300, and the three plastic fixings on both sides are symmetrically arranged along the center line of the width direction of the orthogonal bridge 300.

[0040] The first filter 110 includes a first cavity filter 111 , and the last resonant cavity of the first cavity filter 111 is spaced apart from one end of the first flying rod 210 and is located on a side of the first flying rod 210 close to the plate 410 .

[0041] The second filter 120 includes a second cavity filter 121 . The last resonant cavity of the second cavity filter 121 is spaced apart from one end of the second flying rod 220 and is located on a side of the second flying rod 220 close to the plate 410 .

[0042] The combiner 10 further includes a first microstrip line filter 112 . The output end of the first microstrip line filter 112 is connected to one end of the first flying rod 210 , so as to transmit the first combined signal of the first microstrip line filter 112 and the first cavity filter 111 to the orthogonal bridge 300 through the first flying rod 210 .

[0043] The output end of the first microstrip line in the first microstrip line filter 112 extends into the last resonant cavity of the first cavity filter 111, and the output end of the first microstrip line is spaced apart from one end of the first flying rod 210 and is located on the side of the first flying rod 210 away from the last resonant cavity of the first cavity filter 111.

[0044] The output end of the second microstrip line filter 122 is connected to one end of the second flying rod 220 , so as to transmit the second combined signal of the second microstrip line filter 122 and the second cavity filter 121 to the orthogonal bridge 300 through the second flying rod 220 .

[0045] The output end of the second microstrip line in the second microstrip line filter 122 extends into the last resonant cavity of the second cavity filter 121, and the output end of the second microstrip line is spaced apart from one end of the second flying rod 220 and is located on the side of the second flying rod 220 away from the last resonant cavity of the second cavity filter 121.

[0046] See also Figure 1In one embodiment, the combiner 10 includes two microstrip line filters and two cavity filters. The two microstrip line filters are symmetrically arranged with the center line of the orthogonal bridge 300 along the width direction as the axis. The two microstrip line filters are symmetrically arranged with the center line as the axis.

[0047] Specifically, the two microstrip line filters may be the first microstrip line filter 112 and the second microstrip line filter 122, and the two cavity filters may be the first cavity filter 111 and the second cavity filter 121. The first microstrip line filter 112 and the second microstrip line filter 122 are symmetrically arranged along the width direction of the orthogonal bridge 300, and the first cavity filter 111 and the second cavity filter 121 are also symmetrically arranged along the width direction of the orthogonal bridge 300. That is, the first cavity filter 111 and the first microstrip line filter 112 connected to the first signal input terminal 310 of the orthogonal bridge 300 at the same time, and the second cavity filter 121 and the second microstrip line filter 122 connected to the second signal input terminal 320 of the orthogonal bridge 300 at the same time are symmetrically arranged along the width direction of the orthogonal bridge 300.

[0048] Therefore, in this embodiment, the first microstrip line filter 112 and the first cavity filter 111 are symmetrically arranged with the second microstrip line filter 122 and the second cavity filter 121, which can further reduce the volume of the combiner 10, facilitate design and debugging, and improve configuration flexibility.

[0049] The two microstrip line filters are arranged adjacent to each other, the cavity filter and the microstrip line filter are arranged along the length direction of the orthogonal bridge 300, and the cavity filter is located on the side of the microstrip line filter along the width direction and outside the side of the orthogonal bridge 300 along the width direction.

[0050] The first microstrip line filter 112 and the second microstrip line filter 122 are located between the first cavity filter 111 and the second cavity filter 121. The first microstrip line filter 112 and the second microstrip line filter 122 are arranged adjacent to each other and separated by an isolation wall on the plate body 410 to avoid signal crosstalk between the two. In addition, the resonant cavities of the cavity filter and the microstrip line filter on the same side of the isolation wall are arranged along the length direction of the orthogonal bridge 300, which is convenient for reducing the volume of the combiner 10 while also reducing the signal crosstalk between the microstrip line filter and the cavity filter, thereby improving the controllability of product debugging.

[0051] The input port of the cavity filter is arranged on the same side as the output port of the orthogonal bridge 300 and is arranged opposite to the input port of the microstrip line filter.

[0052] The input ports of the first cavity filter 111 and the second cavity filter 121 are located on the same side of the output port of the orthogonal bridge 300, and the input ports of the first microstrip line filter 112 and the second microstrip line filter 122 are located on the other side of the first cavity filter 111 and the second cavity filter 121. That is, the input ports of the cavity filter and the microstrip line filter are relatively far apart. When they share the first signal input terminal 310 and the second signal input terminal 320 of the orthogonal bridge 300, the signal crosstalk between the microstrip line filter and the cavity filter can be reduced, thereby improving the controllability of product debugging.

[0053] The first cavity filter 111 is composed of 7 resonant cavities. The first to fifth resonant cavities of the first cavity filter 111 are arranged along the center line direction of the width direction of the orthogonal bridge 300, the fifth to seventh resonant cavities of the first cavity filter 111 are arranged along the center line of the width direction of the orthogonal bridge 300, and the fifth to seventh resonant cavities are located between the first microstrip line filter 112 and the first to fifth resonant cavities of the first cavity filter 111.

[0054] The fourth resonant cavity, the fifth resonant cavity and the sixth resonant cavity of the first cavity filter 111 are distributed in a triangular shape, that is, the projection of the fifth resonant cavity in the length direction of the orthogonal bridge 300 is located between the projection of the fourth resonant cavity in the length direction of the orthogonal bridge 300 and the projection of the sixth resonant cavity in the length direction of the orthogonal bridge 300, so as to reduce the number of resonant cavities arranged along the length direction of the orthogonal bridge 300 and shorten the length of the first cavity filter 111.

[0055] The second cavity filter 121 may be composed of seven resonant cavities, and its structure is symmetrically arranged with the structure of the first cavity filter 111 along the central axis in the width direction of the orthogonal bridge 300 , which will not be described in detail here.

[0056] The first microstrip line filter 112 is composed of five resonant cavities arranged along the center line direction of the orthogonal bridge 300 in the width direction.

[0057] The first microstrip line filter 112 is composed of a connecting strip and five branches, the five branches are respectively connected to the connecting strip, and each branch can be equivalent to a resonant cavity. Among them, the distance between each two adjacent branches in the five branches is equal, and the five branches extend in a direction away from the first cavity filter 111 adjacent thereto, so that the first microstrip line filter 112 is regularly arranged, which can reduce the volume of the combiner 10.

[0058] Among them, the length of the projection of the first cavity filter 111 along the length direction of the orthogonal bridge 300 is equal to the sum of the length of the projection of the first microstrip line filter 112 along the length direction of the orthogonal bridge 300 and the length of the projection of the orthogonal bridge 300 along the length direction of the orthogonal bridge 300, so as to further reduce the volume of the combiner 10 and improve the integration of the combiner 10.

[0059] The second microstrip line filter 122 may be composed of five resonant cavities, and the structure thereof is symmetrically arranged with respect to the central axis of the second microstrip line filter 122 along the width direction of the orthogonal bridge 300 , which will not be described in detail here.

[0060] Further, the combiner 10 includes a plate body 410 plastic fixing, and the microstrip line in the microstrip line filter is fixed to the plate body 410 through the plastic fixing. Specifically, the plastic fixing can be provided at both ends of the connecting strip, the connecting strip is passed through the plastic fixing, and the plastic fixing is connected to the plate body 410 of the housing, so as to fix the microstrip line to the plate body 410.

[0061] Therefore, the combiner 10 provided in the present application can realize the coupling of the filter and the orthogonal bridge 300 through the first flying rod 210 and the second flying rod 220, which is convenient for the disassembly and maintenance of the combiner 10, improves the flexibility of the configuration of the combiner 10, and can realize the transparent transmission of low-frequency signals between the two output ports of the set orthogonal bridge 300, thereby improving the adaptive transmission of signals.

[0062] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A combiner, characterized in that: include: at least a first filter and a second filter; A first flying rod, one end of which is connected to the output end of the first filter; A second flying rod, one end of which is connected to the output end of the second filter; An orthogonal bridge, wherein a first signal input end thereof is connected to the other end of the first flying rod, and a second signal input end thereof is connected to the other end of the second flying rod; Wherein, the combiner includes two microstrip line filters and two cavity filters, the two microstrip line filters are arranged adjacent to each other, the cavity filter and the microstrip line filter are arranged along the length direction of the orthogonal bridge, and the cavity filter is located on the side of the microstrip line filter along the width direction of the orthogonal bridge and outside the side of the orthogonal bridge along the width direction.

2. The combiner according to claim 1, characterized in that: Further including: A plate body, the at least first filter and the second filter, and the orthogonal bridge are arranged on the plate body; a side wall perpendicular to the plate body is extended on the plate body, and the side wall is used to separate the orthogonal bridge and the at least first filter and the second filter, the first flying rod and the second flying rod are fixedly arranged on the side wall, and the side wall is provided with a first through hole and a second through hole, the first flying rod is penetrated by the first through hole, and the second flying rod is penetrated by the second through hole.

3. The combiner according to claim 2, characterized in that: A first groove is provided on the end surface of the first signal input end of the orthogonal bridge, and the other end of the first flying rod extends into the first groove and is spaced apart from the side wall of the first groove; A second groove is provided on the end surface of the second signal input end of the orthogonal bridge, and the other end of the second flying rod extends into the second groove and is spaced apart from the side wall of the second groove.

4. The combiner according to claim 2, characterized in that: The first filter is a first cavity filter, the last resonant cavity of the first cavity filter is spaced apart from the one end of the first flying rod, and is located on a side of the first flying rod close to the plate body; The second filter is a second cavity filter, and the last resonant cavity of the second cavity filter is spaced apart from the one end of the second flying rod and is located on a side of the second flying rod close to the plate body.

5. The combiner according to claim 4, characterized in that: Further including: a first microstrip line filter, whose output end is connected to the one end of the first flying rod, so as to transmit a first combined signal of the first microstrip line filter and the first cavity filter to the orthogonal bridge through the first flying rod; The output end of the second microstrip line filter is connected to the one end of the second flying rod, so as to transmit the second combined signal of the second microstrip line filter and the second cavity filter to the orthogonal bridge through the second flying rod.

6. The combiner according to claim 5, characterized in that: The output end of the first microstrip line in the first microstrip line filter extends into the last resonant cavity of the first cavity filter, the output end of the first microstrip line is spaced apart from the one end of the first flying rod, and is located on a side of the first flying rod away from the last resonant cavity of the first cavity filter; The output end of the second microstrip line in the second microstrip line filter extends into the last resonant cavity of the second cavity filter, and the output end of the second microstrip line is spaced apart from the one end of the second flying rod and is located on the side of the second flying rod away from the last resonant cavity of the second cavity filter.

7. The combiner according to claim 1, characterized in that: The two microstrip line filters are symmetrically arranged with the center line of the orthogonal bridge along the width direction as the axis, and the two cavity filters are symmetrically arranged with the center line as the axis.

8. The combiner according to claim 7, characterized in that: The input port of the cavity filter is arranged on the same side as the output port of the orthogonal bridge and is arranged opposite to the input port of the microstrip line filter.

9. The combiner according to claim 1, characterized in that: A first protrusion and a second protrusion extend outwardly from the bridge arm of the orthogonal bridge, wherein the size of the first protrusion is smaller than the size of the second protrusion.

Images