Miniaturized three-frequency two-port antenna combiner

Abstract

The invention relates to the technical field of communication engineering, in particular to a miniaturized three-frequency two-port antenna combiner. The novel miniaturized three-frequency two-port antenna combining module comprises a cavity and a cover plate used for sealing the cavity, a high-frequency resonant frequency capacitor, a high-frequency coupling inductor, a medium-frequency resonant frequency capacitor and a low-frequency resonant frequency capacitor are arranged in the cavity, and a coaxial semi-steel cable used for radio frequency signal input and output is arranged in the cavity. The coupling inductor is used for controlling high-frequency out-of-band rejection parameter indexes; according to the novel miniaturized three-frequency two-port antenna combining module provided by the invention, the number of components used by module assemblies in an antenna can be reduced, the product reciprocity is high, high-power signals can pass through, three different-frequency combining is realized, the loss is small, the reliability is high, and the appearance structure is small.

Description

Technical Field

[0001] The invention relates to the technical field of communication engineering, and in particular to a miniaturized three-band two-port antenna combiner. Background Art

[0002] In the field of modern communications, the rapid evolution of wireless communication technology has promoted the widespread application of multi-band communication systems. With the emergence and coexistence of different communication standards, communication equipment needs to be able to transmit and receive signals on multiple frequency bands.

[0003] The existing products have the following problems: 1) There is a lot of clutter interference and the system receiving resolution is low; 2) Filter components must be added separately at the front end of the system components. The large number of components and the small overall system space cannot meet the overall installation requirements.

[0004] Based on this, the present invention provides a miniaturized three-band two-port antenna combiner to solve the above-mentioned technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a miniaturized three-band two-port antenna combiner, which can reduce the number of components used in the module assembly in the antenna, has strong reciprocity, allows high-power signals to pass through, has three different frequency combinations, has low loss, high reliability, and a small appearance structure.

[0006] To achieve the above object, the present invention provides the following technical solutions: The present invention provides a miniaturized three-band two-port antenna combiner, which is mainly used for antenna built-in multi-signal combining. It has three frequency band signal inputs, and the low-frequency and high-frequency two-way combined outputs are isolated from the intermediate frequency. The combined port output power is added to the power of the other two input ports, and the output signal phase difference range is ±5dB. In order to facilitate the connection with other sub-circuits in the antenna system, each port is directly welded and connected using a coaxial semi-steel cable in the structure, which not only improves the intermodulation value of the system but also facilitates assembly. Thereby better improving the utilization rate of the output signal, while solving the problem that different network signals and the current 5G network signals cannot be accessed at the same time.

[0007] The miniaturized three-band two-port antenna combiner comprises a cavity and a cover plate for sealing the cavity, wherein a high-frequency resonant frequency capacitor, a high-frequency coupling inductor, a medium-frequency resonant frequency capacitor and a low-frequency resonant frequency capacitor are arranged in the cavity.

[0008] The present invention is further configured as follows: a coaxial semi-steel cable for inputting and outputting radio frequency signals is arranged in the cavity.

[0009] The present invention is further configured as follows: a coupling inductor for controlling a high-frequency out-of-band suppression parameter index is also provided in the cavity.

[0010] The present invention is further configured as follows: a high-frequency out-of-band suppression negative coupling capacitor for controlling a low-frequency out-of-band suppression index is also provided in the cavity.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The miniaturized three-band two-port antenna combiner provided by the present invention can reduce the number of components used in the module assembly in the antenna, has strong reciprocity, allows high-power signals to pass through, has three different frequency combinations, has low loss, high reliability, and a small appearance structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded view of the miniaturized three-band two-port antenna combiner of the present invention.

[0013] Figure 2 A three-dimensional diagram of a miniaturized three-band two-port antenna combiner of the present invention; Figure 3 It is a top view of the miniaturized three-band two-port antenna combiner of the present invention.

[0014] Description of Figure Numbers: Cavity; 2. Cover plate; 3. Coaxial semi-steel cable; 4. Coupling inductor; 5. High-frequency resonant frequency capacitor; 6. High-frequency coupling inductor; 7. Medium-frequency resonant frequency capacitor; 8. Low-frequency resonant frequency capacitor; 9. High-frequency out-of-band suppression negative coupling capacitor. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" 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, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0018] like Figure 1-Figure 3 This embodiment provides a miniaturized three-band two-port antenna combiner, including a cavity 1 and a cover plate 2 for sealing the cavity 1, and a high-frequency resonant frequency capacitor 5, a high-frequency coupling inductor 6, a medium-frequency resonant frequency capacitor 7 and a low-frequency resonant frequency capacitor 8 are arranged in the cavity 1.

[0019] Furthermore, a coaxial semi-steel cable 3 for inputting and outputting radio frequency signals is arranged in the cavity 1 .

[0020] A coupling inductor 4 for controlling the high-frequency out-of-band suppression parameter index is also arranged in the cavity 1 .

[0021] A high-frequency out-of-band suppression negative coupling capacitor 9 for controlling the low-frequency out-of-band suppression index is also arranged in the cavity 1 .

[0022] In this embodiment, it should be noted that the provided miniaturized three-band two-port antenna combiner is a three-port device. Its technical characteristics are three frequency band signal inputs, the low-frequency and high-frequency combined outputs are isolated from the intermediate frequency, the output power of the combined port is added to the power of the other two input ports, and the output signal phase difference range is ±5dB. Structurally, each port is directly welded and connected using a coaxial semi-steel cable 3, which not only improves the intermodulation value of the system but also facilitates assembly, thereby better improving the utilization rate of the output signal, and at the same time solving the problem that different network signals and the current 5G network signals cannot be accessed at the same time.

[0023] The miniaturized three-band two-port antenna combiner provided by the present invention can reduce the number of components used in the module assembly in the antenna, has strong reciprocity, allows high-power signals to pass through, has three different frequency combinations, has low loss, high reliability, and a small appearance structure.

[0024] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", 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 present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A miniaturized three-band two-port antenna combiner, characterized in that: The invention comprises a cavity (1) and a cover plate (2) for sealing the cavity (1), wherein a high-frequency resonant frequency capacitor (5), a high-frequency coupling inductor (6), a medium-frequency resonant frequency capacitor (7) and a low-frequency resonant frequency capacitor (8) are arranged in the cavity (1).

2. A miniaturized three-band two-port antenna combiner according to claim 1, characterized in that: A coaxial semi-steel cable (3) for inputting and outputting radio frequency signals is arranged in the cavity (1).

3. The miniaturized three-band two-port antenna combiner according to claim 1, characterized in that: A coupling inductor (4) for controlling a high-frequency out-of-band suppression parameter index is also arranged in the cavity (1).

4. The miniaturized three-band two-port antenna combiner according to claim 1, characterized in that: A high-frequency out-of-band suppression negative coupling capacitor (9) for controlling a low-frequency out-of-band suppression index is also provided in the cavity (1).

Images