Integrated dual-frequency combiner and base station antenna

Abstract

The utility model relates to communication technical field especially an integrated dual -frequency combiner and base station antenna, include: printed circuit board, input port, power distribution circuit and signal output circuit, the signal output circuit includes two output ports, every the output port corresponds low -frequency output port, intermediate frequency output port or high -frequency output port among one respectively, every the input end of output port is electric connection with the output end of power distribution circuit respectively, and the output end of every the output port is used for connecting the antenna. The integrated dual -frequency combiner disclosed by the application integrates the function of combiner and power divider, can reduce the welding point to improve the stability of product, also convenient for the wiring arrangement inside the antenna, and reduce material cost and warehousing pressure, while two the output port corresponds different output frequency band respectively, realizes dual -frequency communication.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, and in particular to an integrated dual-frequency combiner and a base station antenna. Background Technology

[0002] With the development of communication technology, there is a need to build base station antennas for multi-party communication. Currently, base stations are densely distributed, and more sites mean higher costs. To avoid redundant base station construction and reduce waste of resources and manpower, miniaturized multi-frequency antennas are a better solution. The use of multi-frequency antennas can reduce the cost of antenna feeder systems and enable multiple systems to share sites, making more efficient use of limited site resources. However, multi-frequency antennas first combine antenna signals through a combiner and then divide the antenna signals through a power divider. Designing the two components separately increases soldering points, leading to high wiring complexity and reduced product stability, as well as increased material costs and warehousing pressure. In addition, existing combiners have limited frequency band processing capabilities and mostly use fixed frequency band combination designs, making it difficult to adapt to dual-frequency requirements.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an integrated dual-frequency combiner and base station antenna to solve the problems of high wiring complexity and reduced product stability caused by the separate design of existing combiners, and the inability to meet the dual-frequency communication requirements.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An integrated dual-frequency combiner includes:

[0007] Printed circuit boards;

[0008] An input port is provided on the printed circuit board and is used to connect to an external communication device;

[0009] A power distribution line is provided on the printed circuit board. The input terminal of the power distribution line is electrically connected to the input port. The power distribution line is used to filter the antenna signal from the external communication device and distribute the filtered antenna signal to output multiple antenna signals.

[0010] The signal output line is disposed on the printed circuit board and includes two output ports. Each output port corresponds to one of the low-frequency output port, the intermediate-frequency output port, or the high-frequency output port. The input terminal of each output port is electrically connected to the output terminal of the power distribution line. The output terminal of each output port is used to connect to an antenna. Each output port is used to output the antenna signal output by the power distribution line to the antenna.

[0011] As described above, in an integrated dual-band combiner, the power distribution circuit includes an impedance matching circuit disposed on the printed circuit board. The input terminal of the impedance matching circuit is electrically connected to the output terminal of the input port, and the output terminal of the impedance matching circuit is electrically connected to the two output ports respectively. The impedance matching circuit is used to perform impedance matching processing on the antenna signal provided by the input port and transmit the processed antenna signal to the two output ports respectively.

[0012] As described above, in an integrated dual-frequency combiner, each impedance matching line includes a second high-impedance line and a second low-impedance line that are spaced apart, wherein the width of the second high-impedance line is smaller than the width of the second low-impedance line.

[0013] As described above, the integrated dual-frequency combiner further includes two filter lines in the power distribution circuit. Both filter lines are disposed on the printed circuit board. The input terminals of the two filter lines are electrically connected to the two output terminals of the impedance matching circuit, respectively. The output terminals of the two filter lines are electrically connected to the input terminals of the two output ports, respectively. Both filter lines are used to filter the antenna signal output by the impedance matching circuit before outputting it.

[0014] As described above, in an integrated dual-frequency combiner, each of the filter lines includes a first high-impedance line and a first low-impedance line that are spaced apart, wherein the width of the first high-impedance line is smaller than the width of the first low-impedance line.

[0015] In the integrated dual-frequency combiner described above, the lengths of the first high-impedance line and the first low-impedance line are λ / 4, where λ is the wavelength of the center frequency of the line.

[0016] The present invention also provides a base station antenna, comprising two antennas and an integrated dual-frequency combiner as described above, wherein the two antennas are respectively connected to the output terminals of the two output ports.

[0017] Beneficial effects:

[0018] This utility model discloses an integrated dual-frequency combiner, comprising a printed circuit board, an input port, a power distribution line, and a signal output line. The signal output line includes two output ports, each of which is a low-frequency output port, a medium-frequency output port, or a high-frequency output port. The integrated combiner is constructed by the printed circuit board, the input port, the power distribution line, and the signal output line. The input port is located on the printed circuit board for connection to an external communication device. The two output ports are respectively connected to an antenna. The input terminal of the power distribution line is electrically connected to the input port to perform impedance matching and filtering on the antenna signal output from the external communication device, and then output the antenna signal corresponding to the two output ports. This integrated dual-frequency combiner integrates the functions of a combiner and a power divider, which can reduce solder joints to improve product stability, facilitate internal wiring layout of the antenna, and reduce material costs and warehousing pressure. At the same time, the two output ports correspond to different output frequency bands, realizing dual-frequency communication. Attached Figure Description

[0019] Figure 1 The circuit connection diagram of the integrated dual-frequency combiner provided by this utility model;

[0020] Figure 2 A wiring diagram of one of the integrated dual-frequency combiners provided by this utility model;

[0021] Figure 3 A schematic diagram of the wiring of the second integrated dual-frequency combiner provided by this utility model;

[0022] Figure 4 A schematic diagram of the wiring of the third integrated dual-frequency combiner provided by this utility model;

[0023] Figure 5 A schematic diagram of the wiring of the fourth integrated dual-frequency combiner provided by this utility model;

[0024] Figure 6 A schematic diagram of the wiring of the fifth integrated dual-frequency combiner provided by this utility model;

[0025] Figure label: 10-Input port, 20-Power distribution line, 21-Filtering line, 22-Impedance matching line, 30-Signal output line. Detailed Implementation

[0026] This utility model provides an integrated dual-frequency combiner and base station antenna. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0027] In the description of this utility model, it should be understood that the terms "top" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figure 1-6 As shown in the figure, this application proposes an integrated dual-frequency combiner, comprising:

[0029] Printed circuit boards;

[0030] Input port 10 is located on the printed circuit board and is used to connect to an external communication device.

[0031] A power distribution line 20 is disposed on the printed circuit board. The input terminal of the power distribution line 20 is electrically connected to the input port 10. The power distribution line 20 is used to filter the antenna signal from the external communication device and distribute the filtered antenna signal to output multiple antenna signals.

[0032] The signal output line 30 is disposed on the printed circuit board. The signal output line 30 includes two output ports. Each output port corresponds to one of the low-frequency output port, the intermediate-frequency output port, or the high-frequency output port. The input terminal of each output port is electrically connected to the output terminal of the power distribution line 20. The output terminal of each output port is used to connect to an antenna. Each output port is used to output the antenna signal output by the power distribution line 20 to the antenna.

[0033] In this embodiment, the printed circuit board is an important electronic component, serving as a support for electronic components and a carrier for the electrical interconnection of electronic components. By routing traces on the printed circuit board, signal transmission can be achieved. The external communication device connected to the input port 10 can be a radio communication device, a satellite communication device, or a radar device, etc.

[0034] This utility model discloses an integrated dual-frequency combiner, comprising a printed circuit board, an input port 10, a power distribution line 20, and a signal output line 30. The signal output line 30 includes two output ports, each of which is a low-frequency output port, a medium-frequency output port, or a high-frequency output port. The integrated combiner is constructed by the printed circuit board, the input port 10, the power distribution line 20, and the signal output line 30. The input port 10 is located on the printed circuit board for connection to an external communication device. The two output ports are respectively connected to antennas. The input terminal of the power distribution line 20 is electrically connected to the input port 10 to perform impedance matching and filtering on the antenna signal output from the external communication device, and then output the antenna signal corresponding to the two output ports. This integrated dual-frequency combiner integrates the functions of a combiner and a power divider, which can reduce solder joints to improve product stability, facilitate internal wiring of the antenna, and reduce material costs and warehousing pressure. At the same time, the two output ports correspond to different output frequency bands, realizing dual-frequency communication.

[0035] In the embodiments of this application, such as Figure 2-6 As shown, integrated dual-band combiners can be divided into several different frequency band combinations, where Y represents the 600-960MHz frequency band, H represents the 800-960MHz frequency band, U represents the 1710-2700MHz frequency band, J represents the 3000-4000MHz frequency band, UJ represents the 1710-2700 / 3300-4000MHz frequency band, and C represents the 4000-6000MHz frequency band.

[0036] The power distribution line 20 includes an impedance matching line 22, which is disposed on the printed circuit board. The input terminal of the impedance matching line 22 is electrically connected to the output terminal of the input port 10, and the output terminal of the impedance matching line 22 is electrically connected to the two output ports respectively. The impedance matching line 22 is used to perform impedance matching processing on the antenna signal provided by the input port 10 and transmit the processed antenna signal to the two output ports respectively. Impedance matching through the impedance matching line 22 can achieve maximum power transmission, reduce reflection loss, increase bandwidth, improve radiation characteristics, reduce noise, and improve system stability. The specific wiring can be set according to the actual situation and user requirements. It is understood that low-frequency antennas and high-frequency antennas usually have different impedance characteristics (for example, the common impedance is 50Ω or 75Ω). When connecting, ensure impedance matching between the integrated combiner and the antenna to reduce reflection and signal loss. In some applications, the phase relationship and gain characteristics of antennas of different frequencies can be considered to ensure the overall performance of the system. In wireless communication systems, it may be necessary to use low-frequency and high-frequency antennas simultaneously to support signal transmission in different frequency bands. Low-frequency antennas can include long-wire antennas, dipole antennas, etc.; high-frequency antennas can include shortwave antennas, Yagi antennas, planar antennas, etc.

[0037] Each of the impedance matching lines 22 includes a second high-impedance line and a second low-impedance line that are spaced apart. The width of the second high-impedance line is smaller than the width of the second low-impedance line, so as to achieve wideband impedance matching between the combiner section and the power divider section in the integrated dual-frequency combiner.

[0038] The power distribution line 20 also includes two filter lines 21, both of which are disposed on the printed circuit board. The input terminals of the two filter lines 21 are electrically connected to the two output terminals of the impedance matching line 22, respectively, and the output terminals of the two filter lines 21 are electrically connected to the input terminals of the two output ports, respectively. The two filter lines 21 are used to filter the antenna signal output by the impedance matching line 22 before outputting it. The two filter lines 21 can perform different filters on the antenna signal, thereby outputting antenna signals of different frequency bands to the two output ports.

[0039] Each of the filter lines 21 includes a first high-impedance line and a first low-impedance line connected at intervals. The width of the first high-impedance line is smaller than the width of the first low-impedance line. Since the characteristic impedance of a transmission line is related to its geometric dimensions (such as width, thickness, and dielectric material), in microstrip lines or striplines, the characteristic impedance is related to the linewidth and the relative permittivity of the dielectric. The larger the linewidth, the lower the impedance; the smaller the linewidth, the higher the impedance. By using a high-low impedance conversion open line, a wideband filtering effect at the far end is achieved, thereby improving the insertion loss at the edge frequencies within the passband.

[0040] The lengths of the first high-impedance line and the first low-impedance line are λ / 4, where λ is the wavelength at the center frequency of the line. Setting the lengths of the high-impedance line and the low-impedance line to λ / 4 utilizes the characteristics of the transmission line to achieve impedance matching and filtering functions. For example, a λ / 4 transmission line can be used as an impedance transformer. When the impedances at the input and output ends are mismatched, a λ / 4 transmission line can convert one impedance to another, thereby achieving better energy transmission and reducing reflection loss. Furthermore, at specific frequencies, a λ / 4 transmission line can exhibit high or low impedance characteristics. Through proper design, signals of certain frequencies can be attenuated (filtered out), while signals of other frequencies can pass through. Due to this characteristic, a λ / 4 line can be used as a bandpass filter or a bandstop filter.

[0041] This utility model also provides a base station antenna, including two antennas and the integrated dual-frequency combiner as described above. The two antennas are respectively connected to the output terminals of the two output ports to realize dual-frequency communication.

[0042] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. An integrated dual-frequency combiner, characterized in that, include: Printed circuit boards; An input port (10) is provided on the printed circuit board and is used to connect to an external communication device; A power distribution line (20) is provided on the printed circuit board. The input terminal of the power distribution line (20) is electrically connected to the input port (10). The power distribution line (20) is used to filter the antenna signal from the external communication device and distribute the filtered antenna signal to output multiple antenna signals. The signal output line (30) is disposed on the printed circuit board. The signal output line (30) includes two output ports. Each output port corresponds to one of the low-frequency output port, the intermediate-frequency output port, or the high-frequency output port. The input terminal of each output port is electrically connected to the output terminal of the power distribution line (20). The output terminal of each output port is used to connect to the antenna. Each output port is used to output the antenna signal output by the power distribution line (20) to the antenna.

2. The integrated dual-frequency combiner according to claim 1, characterized in that, The power distribution line (20) includes an impedance matching line (22), which is disposed on the printed circuit board. The input end of the impedance matching line (22) is electrically connected to the output end of the input port (10), and the output end of the impedance matching line (22) is electrically connected to the two output ports respectively. The impedance matching line (22) is used to perform impedance matching processing on the antenna signal provided by the input port (10) and transmit the processed antenna signal to the two output ports respectively.

3. An integrated dual-frequency combiner according to claim 2, characterized in that, Each of the impedance matching lines (22) includes a second high-resistivity line and a second low-resistivity line that are spaced apart, wherein the width of the second high-resistivity line is smaller than the width of the second low-resistivity line.

4. An integrated dual-frequency combiner according to claim 2, characterized in that, The power distribution line (20) also includes two filter lines (21), both of which are located on the printed circuit board. The input terminals of the two filter lines (21) are electrically connected to the two output terminals of the impedance matching line (22), and the output terminals of the two filter lines (21) are electrically connected to the input terminals of the two output ports. Both filter lines (21) are used to filter the antenna signal output by the impedance matching line (22) before outputting it.

5. An integrated dual-frequency combiner according to claim 4, characterized in that, Each of the filter lines (21) includes a first high-resistivity line and a first low-resistivity line that are connected at intervals, wherein the width of the first high-resistivity line is smaller than the width of the first low-resistivity line.

6. An integrated dual-frequency combiner according to claim 5, characterized in that, The lengths of the first high-impedance line and the first low-impedance line are λ / 4, where λ is the wavelength of the center frequency of the line.

7. A base station antenna, characterized in that, It includes two antennas and an integrated dual-frequency combiner as described in any one of claims 1-6, wherein the two antennas are respectively connected to the output terminals of the two output ports.

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