Antenna isolator and WIFI module of FTTR terminal equipment

Abstract

The embodiment of the utility model provides an antenna isolator of FTTR terminal equipment and a WIFI module, and relates to the technical field of optical fiber communication. Wherein the antenna isolator of the FTTR terminal equipment is arranged between two adjacent groups of antennas, and comprises at least one grounding path; one end of the extension path is connected with the grounding path, and the other end of the extension path is not grounded; and the impedance element is arranged on the extension path. According to one embodiment of the utility model, the problem of poor adaptability of an antenna isolator in a miniaturized FTTR terminal device in the prior art is solved, and the effect of improving the adaptability of the antenna isolator is further realized.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of optical fiber communication, and in particular to an antenna isolator and a WIFI module of an FTTR terminal device. Background Art

[0002] Fiber to the Room (FTTR) terminals are key access devices in the current fiber-optic communications landscape. They are primarily used in homes and offices, enabling high-speed, stable network access by laying fiber directly into each room. FTTR terminals typically perform multiple functions, such as signal conversion, data transmission, and network management. They meet user demands for high-quality network services, providing high-bandwidth, low-latency connections in individual areas and supporting a variety of applications, including high-definition video streaming, remote work, online education, and smart home control.

[0003] With the continuous expansion of FTTR terminal equipment functionality and performance improvements, multi-antenna technology has begun to be integrated into FTTR terminals to meet the growing demand for high-speed data transmission and the simultaneous access of multiple devices. Multiple antennas can enhance signal transmission and reception capabilities, theoretically increasing data transmission rates and network coverage. However, due to limited space, integrating multiple antennas within the same terminal can easily lead to signal interference between adjacent antennas. This interference, primarily due to electromagnetic energy coupled between antennas, can cause a series of problems such as signal distortion, increased bit error rates, and reduced transmission efficiency, thereby affecting the communication performance and reliability of the entire FTTR terminal. To address this challenge, relevant technologies have gradually developed, and antenna isolators have been introduced. Their main function is to improve the isolation of signal interference between multiple antennas, optimize signal transmission quality, and ensure that FTTR terminals can operate normally and efficiently in complex electromagnetic environments.

[0004] The trend toward miniaturization of electronic devices has also impacted FTTR (Fiber-to-Trend) terminal equipment. Growing user demand for compact, portable network equipment is driving FTTR devices to shrink in size while maintaining high performance. This design trend places a significant strain on the adaptability of antenna isolators. While antenna isolators typically function effectively as isolators within larger spaces, their original design and layout may no longer be suitable within the smaller dimensions of FTTR devices due to space constraints. Optimizing the antenna isolator's structure within this limited space, ensuring it effectively suppresses signal interference between multiple antennas while also meeting the design requirements of the miniaturized FTTR device, has become a pressing technical challenge, placing higher demands on the design and manufacture of antenna isolators. Utility Model Content

[0005] The embodiments of the present invention provide an antenna isolator and a WIFI module for an FTTR terminal device, which at least solve the problem of poor adaptability of the antenna isolator in a miniaturized FTTR terminal device in the related art.

[0006] According to one embodiment of the present invention, an antenna isolator for an FTTR terminal device is provided, comprising: at least one ground path; at least one extension path, one end of which is connected to the ground path and the other end is not grounded; and an impedance element arranged on the extension path.

[0007] In an exemplary embodiment, the extension path includes: a first sub-extension path, a first end of which is connected to the ground path, and a second end of which is used to connect to a second sub-extension path; and a second sub-extension path, a connection point is set between one end and the second end, and the other end is not grounded; wherein the connection point is used to set the impedance element to connect the first sub-extension path and the second sub-extension path.

[0008] In an exemplary embodiment, the connection point is a pad.

[0009] According to another embodiment of the present invention, a WIFI module of an FTTR terminal device is provided, comprising: at least two groups of antennas; and an antenna isolator as described in any one of the above items, wherein the antenna isolator is arranged between two adjacent groups of antennas.

[0010] In an exemplary embodiment, the device further includes: a printed circuit board for arranging the antenna and the antenna isolator.

[0011] In an exemplary embodiment, the printed circuit board is provided with a first area for setting a first antenna; the printed circuit board is also provided with a second area for setting a second antenna; wherein there is a distance between the first area and the second area, and the first antenna and the second antenna are adjacent antennas.

[0012] In an exemplary embodiment, the first area and the second area are arranged near an edge of the printed circuit board.

[0013] In an exemplary embodiment, the printed circuit board is further provided with a third area for arranging the antenna isolator.

[0014] In an exemplary embodiment, the third area is disposed on a signal transmission path of the first antenna and the second antenna.

[0015] In an exemplary embodiment, an area of the third region is smaller than an area of the first region or an area of the second region.

[0016] One embodiment of the present invention provides an extended path that, based on an installed impedance element, can alter the impedance characteristics of the entire antenna isolator, thereby varying the isolation between two adjacent antenna groups and making the isolation adjustable. Therefore, the antenna isolator can be placed within various miniaturized FTTR terminal devices, resolving the poor compatibility of antenna isolators within such devices in related art and thereby improving the compatibility of the antenna isolator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the antenna isolator of the FTTR terminal device according to the embodiment of the utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the antenna isolator of the FTTR terminal device according to the embodiment of the utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 3 ;

[0022] Figure 6 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 4 ;

[0023] Figure 7 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 5 ;

[0024] Figure 8 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 6 ;

[0025] Figure 9 It is a schematic diagram of the change curve of the isolation measured when no antenna isolator is set between two adjacent antennas;

[0026] Figure 10The figure is a schematic diagram of a curve showing a change in isolation measured when an antenna isolator according to an embodiment of the present invention is added between two adjacent antenna groups.

[0027] Explanation of the accompanying drawings: 1. Antenna isolator; 11. Ground path; 12. Extension path; 121. First sub-extension path; 122. Second sub-extension path; 13. Impedance element; 2. Antenna; 21. First antenna; 22. Second antenna; 3. Printed circuit board; 31. First area; 32. Second area; 33. Third area. DETAILED DESCRIPTION

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and in combination with embodiments.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] In this embodiment, an antenna isolator for an FTTR terminal device is provided. The antenna isolator for the FTTR terminal device is arranged between two adjacent antenna groups. Figure 1 This is a schematic diagram of the structure of the antenna isolator of the FTTR terminal device according to the embodiment of the utility model. Figure 1 ,like Figure 1 As shown, the antenna isolator 1 of the FTTR terminal equipment includes:

[0031] at least one ground path 11;

[0032] at least one extension path 12, one end of which is connected to the ground path 11 and the other end of which is not grounded;

[0033] The impedance element 13 is disposed on the extension path 12 .

[0034] In an exemplary embodiment, the grounding path 11 can be set to multiple based on actual needs. In this embodiment, two are used as an example. Similarly, the extension path 12 can also be multiple. In this embodiment, one is used as an example. Of course, the examples of the number of grounding paths 11 and extension paths 12 do not constitute a limitation to this solution. Figure 1 As shown, one end of each of the two ground paths 11 is grounded, and the other end is connected to the extension path 12. The end of the extension path 12 away from the ground path 11 is not grounded. The impedance element 13 can be a resistor, inductor, capacitor, or other component. The installation position of the impedance element 13 on the extension path 12 can be relatively fixed or can be installed at any position on the extension path 12.

[0035] By adopting the above technical solution, the provision of extension path 12, which can change the impedance characteristics of the entire antenna isolator 1 based on the installed impedance element 13, thereby changing the isolation between two adjacent antenna groups 2, making the isolation adjustable. Therefore, the antenna isolator 1 can be placed in various miniaturized FTTR terminal devices, thus resolving the problem of poor compatibility of antenna isolators 1 in miniaturized FTTR terminal devices in related technologies and thereby improving the compatibility of the antenna isolator 1.

[0036] For example, in a pre-designed FTTR terminal device, the space within the device is relatively fixed, and the positions of the components within the device are relatively fixed. If, in this case, the isolation between two components with antennas in the FTTR terminal device fails to meet the required level, the present invention can install the antenna isolator 1 between the two components. By adjusting the impedance element 13, the impedance characteristics of the entire antenna isolator 1 are altered to adjust the isolation between the two antennas 2 to meet the required level. Because the antenna isolator 1 has a simple structure and adjustable isolation, it can be installed in a confined space, thus achieving isolation adjustment without changing the original design layout of the FTTR terminal device.

[0037] Figure 2 This is a schematic diagram of the structure of the antenna isolator of the FTTR terminal device according to the embodiment of the utility model. Figure 2 ,like Figure 2 As shown, in one embodiment, the extension path 12 includes:

[0038] A first sub-extension path 121 , having a first end connected to the ground path 11 and a second end connected to the second sub-extension path 122 ;

[0039] The second sub-extension path 122 has a connection point between one end and the second end, and the other end is not grounded. The connection point is used to set the impedance element 13 to connect the first sub-extension path 121 and the second sub-extension path 122 .

[0040] In an exemplary embodiment, the extension path 12 may have a segmented structure. The segmented structure may include insulating points (including but not limited to cutting the path or providing insulating material to create one or more connection points) at intervals along the extension path 12 to form a first sub-extension path 121 and a second sub-extension path 122, thereby disconnecting the first sub-extension path 121 and the second sub-extension path 122. Alternatively, the segmented structure may include multiple sub-paths, with a distance between the ends of adjacent sub-paths (e.g., the first sub-extension path 121 and the second sub-extension path 122). The distance between the ends of the first sub-extension path 121 and the second sub-extension path 122 creates connection points, disconnecting the first sub-extension path 121 and the second sub-extension path 122. Impedance elements 13 may be installed at the connection points based on actual needs to connect the first sub-extension path 121 and the second sub-extension path 122. Of course, it should be noted that the second sub-extension path 122 need not be a continuous path, but may include multiple unconnected sub-paths. Adjacent sub-paths within the second sub-extension path 122 are connected via the impedance element 13 to change the length of the connection between the second sub-extension path 122 and the first sub-extension path 121, thereby changing the length of the connection between the extension path 12 and the ground path 11. Therefore, by inserting the impedance element 13 into the extension path 12, not only can the impedance characteristics of the entire antenna isolator 1 be changed, thereby adjusting the isolation between two adjacent antenna groups 2 and making the isolation adjustable, but the insertion of the impedance element 13 also increases the length of the connection between the extension path 12 and the ground path 11, thereby changing the total length of the ground path 11 and the grounding of the extension path 12, thereby changing the isolation between the two adjacent antenna groups 2 and making the isolation adjustable.

[0041] In one embodiment, the connection point is a pad.

[0042] In an exemplary embodiment, for example, a connection point is provided between adjacent ports of the first sub-extension path 121 and the second sub-extension path 122. This connection point is a solder pad, which can be a 0201 package pad. Therefore, an impedance element 13 (e.g., a resistor, inductor, capacitor, etc.) can be soldered to the 0201 package pad to connect and electrically connect the first sub-extension path 121 and the second sub-extension path 122. The 0201 package pad is used to mount 0201 package components. 0201 is a small package for electronic components. Components in this package occupy less space on a circuit board, and accordingly, the 0201 package pad is also small, primarily serving as a solder connection location for these small components (such as small resistors, capacitors, inductors, etc.). In the design of antenna isolators 1 for FTTR terminal equipment, equipment continues to be miniaturized. Using a 0201 package pad allows for the use of similarly miniaturized impedance elements 13. Because the 0201 packaged components are inherently small, their corresponding pads are also small, making the entire antenna isolator 1 more compact. This allows the antenna isolator 1 to better fit within the limited space within miniaturized FTTR terminal equipment, resolving the problem of poor adaptability of the antenna isolator 1 within miniaturized equipment in related technologies.

[0043] In this embodiment, a WIFI module of an FTTR terminal device is also provided. Figure 3 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 1 ,like Figure 3 As shown, the WIFI module of the FTTR terminal equipment includes:

[0044] At least two sets of antennas 2;

[0045] As in any one of the above antenna isolators 1 , wherein the antenna isolator 1 is disposed between two adjacent antenna groups 2 .

[0046] In an exemplary embodiment, two adjacent antenna groups 2 may be co-frequency antennas, or alternatively, they may be non-co-frequency antennas. There is a distance between the two antenna groups 2, and an antenna isolator 1 is disposed between the two adjacent antenna groups 2 to improve the isolation between the two antenna groups 2. The antenna isolator 1 of the present embodiment is configured with an extension path 12, and this extension path 12 can change the impedance characteristics of the entire antenna isolator 1 based on the installed impedance element 13 to change the isolation between the two adjacent antenna groups 2, making the isolation adjustable. Therefore, the antenna isolator 1 can be placed in various miniaturized FTTR terminal devices, thereby resolving the problem of poor compatibility of the antenna isolator 1 within miniaturized FTTR terminal devices in related technologies, thereby improving the compatibility of the antenna isolator 1.

[0047] For example, in a pre-designed Wi-Fi module, the space within the module is relatively fixed, and the positions of its components (e.g., antennas) are relatively fixed. If, in this case, the isolation between two adjacent antennas 2 in the Wi-Fi module fails to meet the required level, the present invention can install the antenna isolator 1 between the two adjacent antennas 2. By adjusting the impedance element 13, the impedance characteristics of the entire antenna isolator 1 are altered to adjust the isolation between the two adjacent antennas 2 to meet the required level. Because the antenna isolator 1 has a simple structure and adjustable isolation, it can be installed in a confined space, thus achieving isolation adjustment without changing the original design layout of the Wi-Fi module. Furthermore, the Wi-Fi module can be miniaturized to meet the requirements, and thus the FTTR terminal device equipped with the Wi-Fi module can be miniaturized to meet the requirements.

[0048] Figure 4 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 2 ,like Figure 4 As shown, in one embodiment, the WIFI module of the FTTR terminal device further includes: a printed circuit board 3 for arranging the antenna 2 and the antenna isolator 1.

[0049] In an exemplary embodiment, the printed circuit board 3 can serve as a mounting medium for the antenna 2 and the antenna isolator 1. Furthermore, the ground port of the ground path 11 of the antenna isolator 1 can be connected to the signal ground of the printed circuit board 3, so that the ground ports of the ground path 11 are connected to the same signal ground.

[0050] Figure 5 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 3 ,like Figure 5As shown, in one embodiment, the printed circuit board 3 is provided with a first area 31 for setting the first antenna 21; the printed circuit board 3 is also provided with a second area 32 for setting the second antenna 22; wherein, there is a distance between the first area 31 and the second area 32, and the first antenna 21 and the second antenna 22 are adjacent antennas 2.

[0051] In an exemplary embodiment, the first area 31 is the installation area for the first antenna 21, i.e., the first antenna 21 is installed within the area enclosed by the first area 31. The second area 32 is the installation area for the second antenna 22, i.e., the second antenna 22 is installed within the area enclosed by the second area 32. Because the first antenna 21 and the second antenna 22 are adjacent antennas, maintaining a predetermined spatial distance between the first area 31 and the second area 32 not only facilitates utilizing the spatial distance to improve the isolation between the first antenna 21 and the second antenna 22, but also facilitates the installation of the antenna isolator 1 between the first area 31 and the second area 32, thereby further improving the isolation between the first antenna 21 and the second antenna 22. Furthermore, the first area 31 and the second area 32 can also be cleared areas, utilizing the cleared areas to achieve "self-isolation" between the first antenna 21 and the second antenna 22, further improving the isolation between the first antenna 21 and the second antenna 22.

[0052] In one embodiment, two adjacent groups of antennas 2 are printed circuit board antennas.

[0053] In one exemplary embodiment, the shape and dimensions of the printed circuit board antennas can be customized based on the specific requirements of the FTTR terminal device, such as size, shape, and operating frequency. This allows both antennas 2 to better adapt to different device structures and electromagnetic environments, achieving specific antenna performance indicators. For example, both antennas 2 can be designed with specific directivity or gain to optimize the device's wireless signal transmission and reception capabilities.

[0054] In one embodiment, the ground path 11 is a printed metal trace.

[0055] In an exemplary embodiment, first, printed metal traces can be directly fabricated on the printed circuit board 3, forming an integrated structure with the circuit board. No additional grounding wire connectors are required, which can reduce the number of parts, lower production costs, and improve production efficiency. Second, the ground path 11 can closely match the circuit board layout and can be flexibly arranged according to the shape of the device, optimizing space utilization and enhancing the adaptability of the antenna isolator 1 in different FTTR terminal devices. Finally, the parasitic parameters of the ground path 11 are minimized to ensure good electrical performance and signal integrity, provide stable grounding for the impedance element 13, and optimize the impedance matching and isolation adjustment effects of the antenna isolator 1.

[0056] In one embodiment, the extension path 12 is a printed metal trace.

[0057] In an exemplary embodiment, first, the extension path 12 utilizes printed metal traces, forming an integrated structure with the ground path 11 and other circuit elements. This eliminates the need for additional connectors, reducing component count and connection complexity, saving costs, and improving reliability. Second, the use of printed metal traces allows for flexible routing of the extension path 12, enabling customized designs based on the antenna 2 layout and device space requirements. This helps optimize the layout of the antenna isolator 1 and enhances its compatibility within miniaturized FTTR terminal devices. Furthermore, printed metal traces offer excellent electrical performance. Their low resistance and low loss characteristics reduce signal transmission loss, ensuring the impedance element 13's ability to adjust antenna isolation and enhance the performance of the antenna isolator 1. Finally, when combined with 0201 package pads, they achieve a balance between miniaturization and high performance, meeting the compact footprint and high efficiency requirements of FTTR terminal devices.

[0058] In one embodiment, the first area 31 and the second area 32 are disposed near the edge of the printed circuit board 3 .

[0059] In an exemplary embodiment, the first and second regions 31, 32 are positioned near the edges of the printed circuit board 3. This means that the two antennas 2 are positioned near the edges of the printed circuit board 3. When the Wi-Fi module of the FTTR terminal device is operating, the transmission path of the "crosstalk signal" between the two adjacent antennas 2 is also propagated along the edges of the printed circuit board 3. This reduces the degree to which the "crosstalk signal" between the two adjacent antennas 2 interferes with other circuit components within the printed circuit board 3.

[0060] Figure 6 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 4 ,like Figure 6 As shown, in one embodiment, the printed circuit board 3 is further provided with a third area 33 for arranging the antenna isolator 1 .

[0061] In an exemplary embodiment, the third area 33 is the installation area for the antenna isolator 1. Specifically, the antenna isolator 1 is installed within the area enclosed by the third area 33. Therefore, planning the installation area for the antenna isolator 1 in advance facilitates circuit board layout planning. Furthermore, the third area 33 can be a cleared area, which can be utilized to further improve the isolation between the first antenna 21 and the second antenna 22. The first antenna 21 and the second antenna 22 can both be Wi-Fi antennas.

[0062] In one embodiment, the third area 33 is disposed on a signal transmission path between the first antenna 21 and the second antenna 22 .

[0063] In one exemplary embodiment, pre-planning the third region 33 along the signal transmission path between the first antenna 21 and the second antenna 22 facilitates planning the installation location of the antenna isolator 1 and facilitates assembly and testing of the Wi-Fi module of the FTTR terminal device. Furthermore, if the third region 33 can be a cleared area, this cleared area can be used to further improve the isolation between the first antenna 21 and the second antenna 22.

[0064] In one embodiment, the area of the third region 33 is smaller than the area of the first region 31 or the area of the second region 32 .

[0065] In an exemplary embodiment, the area of the third region 33 is set to be smaller than the area of the first region 31 or the area of the second region 32. This helps reduce the space occupied by the antenna isolator 1 on the printed circuit board 3, saving space on the printed circuit board 3 and facilitating the planning of other components to be installed. This increases the integration level of the printed circuit board 3, thereby reducing the size of the Wi-Fi module of the FTTR terminal device, further meeting the design requirements of the increasingly miniaturized FTTR terminal device.

[0066] Figure 7 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 5 ,like Figure 7 As shown, in an exemplary embodiment, the WIFI module of the FTTR terminal device may include only a pair of antennas. In the pair of antennas, the first antenna 21 is a Bluetooth BT antenna, and the second antenna 22 is a WIFI antenna. Of course, the first antenna 21 and the second antenna 22 may also be both WIFI antennas (for example, Figure 6 The first region 31 is located at the upper left of the printed circuit board 3, the second region 32 is located at the lower left of the printed circuit board 3, and the third region 33 is located near the center of the left side of the printed circuit board 3. The first antenna 21 is mounted in the first region 31, the second antenna 22 is mounted in the second region 32, and the antenna isolator 1 is mounted in the third region 33. The antenna isolator 1 is located in the signal transmission path between the first antenna 21 and the second antenna 22.

[0067] Figure 8 This is a schematic diagram of the structure of the WIFI module of the FTTR terminal device according to the embodiment of the utility model. Figure 6 ,like Figure 8As shown, in an exemplary embodiment, the WIFI module of the FTTR terminal device may also include multiple pairs of antennas, for example, two pairs of antennas. In the first pair of antennas, the first antenna 21 and the second antenna 22 may both be WIFI antennas. The first region 31 is located at the upper left of the printed circuit board 3, the second region 32 is located at the lower left of the printed circuit board 3, and the third region 33 is located near the center of the left side of the printed circuit board 3. The first antenna 21 is mounted within the first region 31, the second antenna 22 is mounted within the second region 32, and the antenna isolator 1 is mounted within the third region 33. The antenna isolator 1 is located in the signal transmission path between the first antenna 21 and the second antenna 22. Therefore, in the first pair of antennas, the antenna isolator 1 can improve the isolation between the first antenna 21 and the second antenna 22.

[0068] In the second antenna pair, the first antenna 21 is the first antenna 21 of the first pair, and the second antenna 22 is a Bluetooth BT antenna. The third area 33 is located above and near the right side of the printed circuit board 3, while the second area 32 is located to the right of the printed circuit board 3. The second antenna 22 is mounted within the second area 32, and the antenna isolator 1 is mounted within the third area 33. The antenna isolator 1 is located in the signal transmission path between the first antenna 21 and the second antenna 22. Therefore, in the second antenna pair, the antenna isolator 1 can improve the isolation between the first antenna 21 and the second antenna 22.

[0069] In one embodiment, the first antenna includes a first antenna radiator, a first feed pin, and a first ground pin. The first antenna radiator is disposed within the first region, one end of the first feed pin is connected to the first antenna radiator, and the other end of the first feed pin is connected to a chip terminal via a microstrip line; one end of the first ground pin is connected to the first antenna radiator, and the other end of the first ground pin is connected to a signal ground of a printed circuit board.

[0070] In one embodiment, the second antenna includes a second antenna radiator, a second feed pin, and a second ground pin. The second antenna radiator is disposed in the second region, one end of the second feed pin is connected to the second antenna radiator, and the other end of the second feed pin is connected to the chip terminal via a microstrip line; one end of the second ground pin is connected to the second antenna radiator, and the other end of the second ground pin is connected to the signal ground of the printed circuit board.

[0071] Figure 9 This is a schematic diagram of the isolation curve measured when no antenna isolator is set between two adjacent antennas. Figure 10 FIG. 1 is a schematic diagram of a curve showing the change in isolation measured when an antenna isolator according to an embodiment of the present invention is installed between two adjacent antennas. Figure 9As shown in the figure, the red curve is the isolation change curve measured when no antenna isolator is set between two adjacent antennas. Figure 9 The isolation between two adjacent antennas is about -16.1241dB near the frequency of m1 in the figure. As the signal frequency increases, for example, at 2.5GHz (corresponding to Figure 9 Near the frequency m2 in the figure, the isolation between two adjacent antennas is about -17.6411dB.

[0072] like Figure 10 As shown in the figure, the red curve is the curve change of the isolation measured when no resistor (corresponding to the above-mentioned impedance element) is set in the antenna isolator, and the blue curve is the curve change of the isolation measured when a resistor (corresponding to the above-mentioned impedance element) is added in the antenna isolator. Figure 10 The red curve in Figure 9 Compared with the red curve without antenna isolator, at around 2.5GHz, Figure 10 The isolation at m3 of the red curve is about -27.9520, compared with Figure 9 The isolation of m2 is about -17.6411dB, which means the isolation has been significantly improved.

[0073] Figure 10 The blue curve in Figure 9 Compared with the red curve without antenna isolator, at around 2.4GHz, Figure 10 The isolation at m4 of the blue curve is about -23.6060, compared with Figure 9 The isolation of m1 in the circuit is about -16.1241dB, which means the isolation has been significantly improved. Figure 10 The isolation at m5 of the blue curve is about -21.4462, compared with Figure 9 The isolation of m2 in the circuit is about -17.6411dB, which means the isolation has been significantly improved.

[0074] In summary, installing an antenna isolator effectively improves the isolation between adjacent antennas compared to not installing one. The antenna isolation effect after adding a resistor to the antenna isolator is even more pronounced in specific frequency bands, which helps improve the overall performance of the Wi-Fi module in FTTR equipment, reduce signal interference, and enhance communication reliability.

[0075] It should be noted that the above modules can be implemented through software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the scope of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An antenna isolator for an FTTR terminal device, characterized in that: Set between two adjacent antenna groups, including: At least one path to ground; at least one extended path, one end of which is connected to the ground path and the other end of which is not grounded; The impedance element is arranged on the extension path.

2. The antenna isolator according to claim 1, wherein: The extension path includes: a first sub-extension path, a first end of which is connected to the ground path, and a second end of which is used to connect to a second sub-extension path; The second sub-extension path has a connection point between one end and the second end, and the other end is not grounded; wherein the connection point is used to set the impedance element to connect the first sub-extension path and the second sub-extension path.

3. The antenna isolator according to claim 2, wherein: The connection point is a pad.

4. A WIFI module for FTTR terminal equipment, characterized in that: include: At least two sets of antennas; The antenna isolator according to any one of claims 1 to 3, wherein the antenna isolator is arranged between two adjacent groups of antennas.

5. The WIFI module according to claim 4, characterized in that: Also includes: A printed circuit board is used to set the antenna and the antenna isolator.

6. The WIFI module according to claim 5, characterized in that: The printed circuit board is provided with a first area for arranging a first antenna; the printed circuit board is also provided with a second area for arranging a second antenna; wherein there is a distance between the first area and the second area, and the first antenna and the second antenna are adjacent antennas.

7. The WIFI module according to claim 6, characterized in that: The first area and the second area are arranged near an edge of the printed circuit board.

8. The WIFI module according to claim 6, characterized in that: The printed circuit board is further provided with a third area for arranging the antenna isolator.

9. The WIFI module according to claim 8, characterized in that: The third area is arranged on a signal transmission path between the first antenna and the second antenna.

10. The WIFI module according to claim 8, characterized in that: The area of the third region is smaller than the area of the first region or the area of the second region.

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