Signal enhancement device

Abstract

The utility model discloses a signal enhancement device, and the device comprises an outdoor antenna which is configured to receive an outdoor signal and send an amplified outdoor signal to a room, and the outdoor antenna comprises a first patch antenna unit; the indoor antenna is configured to receive indoor signals and send amplified indoor signals to the outside, the indoor antenna comprises a second patch antenna unit, and the second patch antenna unit and the patch antenna of the first patch antenna unit are in cross polarization; and the signal amplification circuit is configured to amplify the outdoor signal to generate an amplified outdoor signal and / or amplify the indoor signal to generate an amplified indoor signal.

Description

Technical Field

[0001] This application relates to the field of wireless technology, and more particularly to a signal enhancement device. Background Technology

[0002] In typical enclosed indoor environments or scenarios without antenna coverage, signal coverage is often weak, such as in enclosed conference rooms. Figure 1 As shown, indoor signal boosting devices typically have one side placed near a window to receive external signals, while the other side faces inwards. The device amplifies the received signal and transmits it indoors to enhance signal coverage.

[0003] Currently, indoor and outdoor antennas have high profiles and large volumes, resulting in a large overall size of the signal enhancement device. Summary of the Invention

[0004] This application provides a signal enhancement device.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] This application provides a signal enhancement device, including:

[0007] An outdoor antenna is configured to receive outdoor signals and transmit amplified outdoor signals indoors, the outdoor antenna including a first patch antenna element;

[0008] An indoor antenna is configured to receive indoor signals and transmit amplified indoor signals to the outside. The indoor antenna includes a second patch antenna element, which is cross-polarized with the patch antenna of the first patch antenna element.

[0009] A signal amplification circuit is configured to amplify the outdoor signal to generate the amplified outdoor signal, and / or amplify the indoor signal to generate the amplified indoor signal.

[0010] In the above scheme, the outdoor antenna and the indoor antenna are set back-to-back on the decoupling floor.

[0011] In the above scheme, both the decoupling floor where the outdoor antenna is located and the decoupling floor where the indoor antenna is located are provided with edge shielding plates.

[0012] In the above scheme, the first patch antenna unit consists of a set of vertically polarized patch antennas, a first dielectric substrate, a first ground plane, a first probe, and a first coaxial feed port, wherein,

[0013] The set of vertically polarized patch antennas includes a central patch antenna and two patch antennas with opposite opening directions; electromagnetic waves feed energy to the central patch antenna through the first coaxial feed port via the first probe, and the energy of the central patch antenna is coupled to the two patch antennas with opposite opening directions.

[0014] In the above scheme, the first patch antenna unit includes an antenna array unit, and the number of the antenna array units is greater than or equal to 1.

[0015] In the above scheme, the antenna array unit is in the form of a linear array or a surface array.

[0016] In the above scheme, the outdoor antenna is configured to change the phase of different antenna array elements through the signal amplification circuit to achieve antenna array beam scanning.

[0017] In the above scheme, the second patch antenna unit consists of a set of horizontally polarized patch antennas, a second dielectric substrate, a second ground plane, a second probe, and a second coaxial feed port, wherein,

[0018] The set of horizontally polarized patch antennas includes a central patch antenna and two patch antennas with opposite opening directions; electromagnetic waves feed energy to the central patch antenna through the second coaxial feed port via the second probe, and the energy of the central patch antenna is coupled to the two patch antennas with opposite opening directions.

[0019] In the above solution, the signal enhancement device is integrated into a single housing.

[0020] In the above scheme, the outer casing includes an all-metal casing.

[0021] This application provides a signal enhancement device comprising: an outdoor antenna configured to receive an outdoor signal and transmit an amplified outdoor signal indoors, the outdoor antenna including a first patch antenna element; an indoor antenna configured to receive an indoor signal and transmit an amplified indoor signal outdoors, the indoor antenna including a second patch antenna element, the second patch antenna element and the patch antenna of the first patch antenna element being cross-polarized; and a signal amplification circuit configured to amplify the outdoor signal to generate an amplified outdoor signal, and / or amplify the indoor signal to generate an amplified indoor signal. As can be seen, this signal enhancement device adopts a low-profile patch antenna design, resulting in a lower profile and smaller size. The cross-polarization of the patch antennas of the second and first patch antenna elements enhances signal isolation and reduces the risk of co-channel interference; simultaneously, the cross-polarized patch antenna achieves dual-polarization functionality without additional physical space, resulting in a compact structure. Thus, it effectively solves the problem of the large profile and size of the indoor and outdoor antennas, which contribute to the overall large size of the signal enhancement device. The signal enhancement device proposed in this application is a signal enhancement device based on a low-profile antenna structure, which effectively reduces the device size and enhances signal isolation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the principle of an indoor signal enhancement device in related technologies.

[0023] Figure 2 This application provides a schematic diagram of the structure of a signal enhancement device. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the structure of a signal enhancement device according to an embodiment of this application. Figure 2 ;

[0025] Figure 4 This is a schematic diagram of the structure of an outdoor antenna according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the structure of an indoor antenna according to an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the S11 parameters of a single port of an outdoor antenna and an indoor antenna array according to an embodiment of this application;

[0028] Figure 7 This is a schematic diagram illustrating the isolation of each port of an outdoor antenna and an indoor antenna array according to an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the H-plane radiation pattern of an indoor antenna according to an embodiment of this application;

[0030] Figure 9This is a schematic diagram of the E-plane radiation pattern of an indoor antenna according to an embodiment of this application;

[0031] Figure 10 This is a schematic diagram of the H-plane radiation pattern of an outdoor antenna array when it is fed in the same direction, according to an embodiment of this application.

[0032] Figure 11 This is a schematic diagram of the E-plane radiation pattern of an outdoor antenna array when it is fed in the same direction, according to an embodiment of this application.

[0033] Figure 12 This application provides an embodiment of an outdoor antenna array with scanning angle direction. Figure 1 A schematic diagram;

[0034] Figure 13 This application provides an embodiment of an outdoor antenna array with scanning angle direction. Figure 2 A schematic diagram. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0036] Currently, indoor and outdoor antennas have high profiles and large volumes, resulting in a large overall size of the signal enhancement device.

[0037] This application provides a signal enhancement device, such as... Figure 2 As shown, the signal enhancement device 1 includes:

[0038] The outdoor antenna 11 is configured to receive outdoor signals and transmit amplified outdoor signals indoors. The outdoor antenna 11 includes a first patch antenna element 111.

[0039] The indoor antenna 21 is configured to receive indoor signals and transmit amplified indoor signals to the outside. The indoor antenna 21 includes a second patch antenna element 211, which is cross-polarized with the patch antenna of the first patch antenna element 111.

[0040] The signal amplification circuit 31 is configured to amplify the outdoor signal to generate an amplified outdoor signal, and / or amplify the indoor signal to generate an amplified indoor signal.

[0041] The signal enhancement device 1 of this application includes: an outdoor antenna 11 configured to receive outdoor signals and transmit amplified outdoor signals indoors, the outdoor antenna 11 including a first patch antenna element 111; an indoor antenna 21 configured to receive indoor signals and transmit amplified indoor signals outdoors, the indoor antenna 21 including a second patch antenna element 211, the second patch antenna element 211 and the patch antenna of the first patch antenna element 111 being cross-polarized; and a signal amplification circuit 31 configured to amplify outdoor signals to generate amplified outdoor signals, and / or amplify indoor signals to generate amplified indoor signals. Therefore, the signal enhancement device 1 adopts a low-profile patch antenna form, resulting in a lower profile and smaller size. The cross-polarization of the patch antennas of the second patch antenna element 211 and the first patch antenna element 111 enhances signal isolation and reduces the risk of co-channel interference; simultaneously, the cross-polarized patch antenna achieves dual-polarization without additional physical space, resulting in a compact structure. Thus, it effectively solves the problem that the high profile and large size of the indoor and outdoor antennas cause the overall signal enhancement device to be large. The signal enhancement device proposed in this application is a signal enhancement device based on a low-profile antenna structure, which effectively reduces the device size and enhances signal isolation.

[0042] In some embodiments, such as Figure 3 As shown, the outdoor antenna 11 and the indoor antenna 21 are arranged back-to-back on the decoupling floor 41.

[0043] In practical applications, both the outdoor antenna 11 and the indoor antenna 21 are mounted on the decoupling ground plane 41, and the outdoor antenna 11 and the indoor antenna 21 are arranged back-to-back with a gap between them. The back-to-back layout proposed in this application, combined with the decoupling ground plane, can effectively reduce electromagnetic coupling between the antennas. The decoupling ground plane provides rigid support for the antennas, and the back-to-ground layout simplifies wiring and reduces signal transmission loss. It solves the problem of low isolation between indoor and outdoor antennas and avoids self-oscillation interference by using the decoupling ground plane.

[0044] In some embodiments, such as Figure 3 As shown, both the decoupling floor 41 where the outdoor antenna 11 is located and the decoupling floor 41 where the indoor antenna 21 is located are provided with edge shielding plates 51.

[0045] In practical applications, this application provides an edge shielding plate 51 on the decoupling ground 41 where the outdoor antenna 11 is located, and an edge shielding plate 51 is also provided on the decoupling ground 41 where the indoor antenna 21 is located. The edge shielding plate further increases the isolation. The edge shielding plate, combined with the dielectric characteristics of the decoupling ground, can enhance the isolation effect of orthogonal polarization components. The edge shielding plate can effectively suppress electromagnetic wave diffraction at the edge of the ground through physical blocking, and reduce signal crosstalk caused by surface wave propagation.

[0046] In some embodiments, such as Figure 3 and Figure 4 As shown, the first patch antenna unit 111 consists of a set of vertically polarized patch antennas 1111, a first dielectric substrate 1112, a first ground plane 1113, a first probe 1114, and a first coaxial feed port 1115, wherein,

[0047] like Figure 4 As shown, a set of vertically polarized patch antennas 1111 includes a central patch antenna and two patch antennas with opposite opening directions; electromagnetic waves feed energy to the central patch antenna through the first coaxial feed port 1115 via the first probe 1114, and the energy of the central patch antenna is coupled to the two patch antennas with opposite opening directions.

[0048] In practical applications, existing transmitters and receivers both use a single antenna, which results in low gain. Combined with... Figures 1 to 4 This application employs a novel antenna element structure with a wider bandwidth. The first patch antenna element 111 of the outdoor antenna 11 consists of a set of vertically polarized patch antennas 1111, a first dielectric substrate 1112, a first ground plane 1113, a first probe 1114, and a first coaxial feed port 1115. The patch antenna located at the center is directly fed through the first probe 1114, and the energy is transferred to the two patch antennas with opposite opening directions on both sides through near-field coupling, so that the radiation field forms a complementary symmetrical radiation pattern. This design can maintain the vertical polarization of the main beam and adjust the horizontal beamwidth through the reverse openings to achieve a more uniform coverage. In addition, the two reverse-opening patches and the central patch form an electromagnetic field phase reversal, effectively canceling parasitic coupling in the feed network and improving port isolation.

[0049] In some embodiments, combined with Figure 3 As shown, the first patch antenna unit 111 includes an antenna array unit, and the number of antenna array units is greater than or equal to 1.

[0050] In practical applications, the number of antenna array elements is greater than or equal to 1, and the number of antenna array elements can also be set to greater than or equal to 3. For example, combined with... Figure 4 As shown, the antenna array has 3 elements, including three sets of vertically polarized patch antennas 1111.

[0051] In some embodiments, the antenna array elements are arranged in the form of a linear array or a surface array.

[0052] In some embodiments, combined with Figures 1 to 4 The outdoor antenna 11 is configured to change the phase of different antenna array elements through the signal amplification circuit 31 to achieve antenna array beam scanning.

[0053] In practical applications, the outdoor antenna 11 can be scanned by the signal amplification circuit 31 to obtain the optimal angle for receiving the signal.

[0054] In some embodiments, such as Figure 3 and Figure 5 As shown, the second patch antenna unit 211 consists of a set of horizontally polarized patch antennas 2111, a second dielectric substrate 2112, a second ground plane 2113, a second probe 2114, and a second coaxial feed port 2115, wherein,

[0055] like Figure 5 As shown, a set of horizontally polarized patch antennas 2111 includes a central patch antenna (main U-shaped patch) and two patch antennas with opposite opening directions (parasitic U-shaped patches); electromagnetic waves feed energy to the central patch antenna through the second coaxial feed port 2115 via the second probe 2114, and the energy of the central patch antenna is coupled to the two patch antennas with opposite opening directions.

[0056] In practical applications, existing transmitters and receivers both use a single antenna, which results in low gain. Combined with... Figures 1 to 3 ,as well as Figure 5 This application employs a novel antenna element structure with a wider bandwidth. The second patch antenna element 211 of the indoor antenna 21 consists of a set of horizontally polarized patch antennas 2111, a second dielectric substrate 2112, a second ground plane 2113, a second probe 2114, and a second coaxial feed port 2115. The patch antenna located at the center is directly fed through the second probe 2114, and its horizontal polarization characteristics dominate the radiation field. The reverse-aperture structure improves the cross-polarization ratio by disrupting the phase consistency of the vertical polarization components. The patch with the reverse opening adjusts the surface current distribution to form a complementary radiation pattern, increasing the horizontal beamwidth and expanding the horizontal coverage area. Energy transfer is achieved between the reverse-aperture patch and the central patch through near-field coupling, and their reverse current distribution can cancel parasitic coupling in the feed network and optimize port isolation.

[0057] In some embodiments, the signal enhancement device is integrated into a single housing.

[0058] In some embodiments, the housing includes an all-metal housing.

[0059] In practical applications, the signal enhancement device (i.e., amplification device) proposed in this application has an all-metal casing and isolates the indoor antenna and outdoor antenna sections.

[0060] In a feasible scenario, such as Figure 6 As shown, the S11 parameters of a single port of the outdoor antenna and indoor antenna array are as follows: Figure 6As shown, the S11 parameter characterizes the port reflection coefficient, and its value reflects the degree of matching between the antenna and the transmission impedance. The depth and width of the S11 curve in a specific frequency band determine the effective bandwidth of the antenna. The indoor antenna frequency band of this application is 2467-2692MHz, and the outdoor antenna array frequency band is 2440-2669MHz.

[0061] Outdoor antenna arrays can achieve beam scanning by changing the phase of different antennas using phase shifters, in order to obtain the optimal angle for receiving signals.

[0062] In a feasible scenario, such as Figure 7 As shown, the isolation between each port of the outdoor antenna and the indoor antenna array is as follows: Figure 7 As shown.

[0063] In a feasible scenario, such as Figure 8 As shown, the H-plane radiation pattern of the indoor antenna is as follows: Figure 8 As shown, the indoor antenna H-plane gain is greater than or equal to 8 dBi.

[0064] In a feasible scenario, such as Figure 9 As shown, the E-plane radiation pattern of the indoor antenna is as follows: Figure 9 As shown, the gain of the indoor antenna on the E-plane is greater than or equal to 8 dBi.

[0065] In a feasible scenario, such as Figure 10 As shown, the H-plane radiation pattern of the outdoor antenna array when it is co-directed fed is as follows. Figure 10 As shown, the gain of the outdoor antenna array H-plane is greater than or equal to 9 dBi.

[0066] In a feasible scenario, such as Figure 11 As shown, the antenna E-plane radiation pattern when the outdoor antenna array is fed in the same direction is as follows: Figure 11 As shown, the gain of the outdoor antenna array on the E-plane is greater than or equal to 9 dBi.

[0067] The isolation between the indoor antenna and the outdoor antenna array in this application is greater than 60 dBi.

[0068] In a feasible scenario, the outdoor antenna array has a scanning angle direction. Figure 1 like Figure 12 As shown, the outdoor antenna array has a scanning angle direction. Figure 2 like Figure 13 As shown.

[0069] The indoor and outdoor antenna arrays of this application employ multiple U-shaped patch elements to achieve better bandwidth performance. The U-shaped patch utilizes U-shaped slots created on traditional rectangular patches to alter the surface current path, forming a secondary resonant point close to the original resonant frequency. For a single antenna element, electromagnetic waves feed energy to the central U-shaped patch through a coaxial feed port and a probe. The energy from this U-shaped patch is then coupled to two other U-shaped elements in opposite directions. The indoor antenna has a bandwidth of 2467-2692MHz, with E-plane and H-plane gains greater than or equal to 8dBi. The outdoor antenna array has a bandwidth of 2440-2669MHz, with E-plane and H-plane gains greater than or equal to 9dBi. The isolation between the indoor and outdoor antenna arrays is greater than 60dBi.

[0070] The signal enhancement device based on a low-profile antenna structure proposed in this application reduces the device size; polarization diversity reduces the coupling between the indoor and outdoor antennas, suppressing self-excitation interference to a certain extent; and the outdoor antenna scheme using multi-antenna beam scanning enhances the receiving capability of the device.

[0071] It should be noted that, in order to save space, signal enhancement devices in related technologies typically use a single antenna at both the transmitting and receiving ends, resulting in low gain and insufficient reception capability for weak outdoor signals. The isolation between indoor and outdoor antennas is relatively small, and during the process of outdoor signals being amplified and transmitted by the indoor antenna, a portion of the transmitted signal will couple to the outdoor signal, causing self-excitation interference of the signal enhancement device. Indoor and outdoor antennas have high profiles and large volumes.

[0072] The signal enhancement device provided in this application has at least the following advantages: it adopts a patch antenna form, which has a lower profile and smaller size; it adopts a decoupled ground plane and cross-polarization arrangement, which has greater isolation; it adopts a new antenna element structure, which has a wider bandwidth; and the outdoor antenna array adopts a beam scanning form, which has stronger signal transmission and reception capabilities.

[0073] With the rapid development of the antenna industry, signal enhancement devices are being used more and more widely. In combination with the market demand in the wireless field, the signal enhancement device with high isolation, high transmit and receive capabilities and miniaturized size proposed in this application will be widely used.

[0074] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0075] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0076] In the embodiments provided in this application, it should be understood that the disclosed structures can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of units or modules is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units, modules, or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, devices, units, or modules, and can be electrical, mechanical, or other forms.

[0077] The units or modules described above as separate components may or may not be physically separate. The components shown as units or modules may or may not be physical units or modules. They may be located in one place or distributed across multiple network units or modules. Some or all of the units or modules may be selected to achieve the purpose of this embodiment according to actual needs.

[0078] In addition, in the various embodiments of the present invention, each functional unit or module can be integrated into one processing unit or module, or each unit or module can be a separate unit or module, or two or more units or modules can be integrated into one unit or module; the integrated unit or module can be implemented in hardware or in the form of hardware plus software functional units or modules.

[0079] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

[0081] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. A signal boosting device, characterized by, The device comprises: An outdoor antenna configured to receive an outdoor signal and send an amplified outdoor signal indoors, the outdoor antenna comprising a first patch antenna unit; An indoor antenna configured to receive an indoor signal and send an amplified indoor signal outdoors, the indoor antenna comprising a second patch antenna unit, the second patch antenna unit being cross-polarized with the patch antenna of the first patch antenna unit; A signal amplification circuit configured to amplify the outdoor signal to generate the amplified outdoor signal, and / or amplify the indoor signal to generate the amplified indoor signal.

2. The apparatus of claim 1, wherein, The outdoor antenna and the indoor antenna are arranged back-to-back on a decoupling floor.

3. The apparatus of claim 2, wherein, The decoupling floor where the outdoor antenna is located and the decoupling floor where the indoor antenna is located are both provided with edge shielding pieces.

4. The apparatus of claim 1, wherein, The first patch antenna unit is composed of a group of vertically polarized patch antennas, a first dielectric substrate, a first ground plate, a first probe, and a first coaxial feeding port, wherein The group of vertically polarized patch antennas includes a centrally located patch antenna and two oppositely oriented patch antennas; electromagnetic waves feed energy to the centrally located patch antenna via the first probe through the first coaxial feeding port, and the energy of the centrally located patch antenna is coupled to the two oppositely oriented patch antennas.

5. The apparatus of claim 4, wherein, The first patch antenna unit includes an antenna array unit, and the number of the antenna array unit is greater than or equal to 1.

6. The apparatus of claim 5, wherein, The array form of the antenna array unit is a linear array or a planar array.

7. The apparatus of claim 5 or 6, wherein, The outdoor antenna is configured to change the phase of different antenna array units through the signal amplification circuit to realize antenna array beam scanning.

8. The apparatus of claim 1, wherein, The second patch antenna unit is composed of a group of horizontally polarized patch antennas, a second dielectric substrate, a second ground plate, a second probe, and a second coaxial feeding port, wherein The group of horizontally polarized patch antennas includes a centrally located patch antenna and two oppositely oriented patch antennas; electromagnetic waves feed energy to the centrally located patch antenna via the second probe through the second coaxial feeding port, and the energy of the centrally located patch antenna is coupled to the two oppositely oriented patch antennas.

9. The apparatus of claim 2, wherein, The signal enhancement device is integrated in a single housing.

10. The apparatus of claim 9, wherein, The housing comprises an all-metal housing.

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