Antenna device

Abstract

The application provides an antenna device, and relates to the fields of combined antenna integration and antenna filtering technology.The antenna device comprises an antenna unit, a filter unit and an output unit.The antenna unit receives a first signal and a second signal, filters the first signal and the second signal by using the filter unit, and finally outputs the filtered first target signal and the second target signal by using the output unit.The band-stop filtering module and the band-pass filtering module in the filter unit are integrated together and arranged in a first direction, the first direction is the thickness direction of a first filter circuit board in the band-stop filtering module, and the first direction is also the thickness direction of a second filter circuit board in the band-pass filtering module.Thus, the planar volume of the circuit in the filter unit is reduced, the planar volume of the entire antenna device is reduced, and the problem of large planar volume of the antenna device in the prior art is solved.

Description

Technical Field

[0001] This application relates to the fields of combined antenna integration and antenna filtering technology, and specifically to antenna devices. Background Technology

[0002] With the rapid development of technology, the combined use of mobile communication systems and navigation systems has become more common. Traditional simple positioning or communication can no longer meet the needs of life. Precise positioning and real-time communication functions are often required in many fields, such as vehicle systems, drones, individual soldier combat systems, and smart devices. Therefore, the integration of navigation and communication systems is essential.

[0003] However, if traditional antennas meet the requirements of multiple frequencies, they almost always adopt the "antenna + circuit dielectric filter" scheme. For each additional frequency band, an additional dielectric filter circuit is required, which increases the complexity of the circuit, thereby increasing the circuit area and ultimately resulting in an excessively large planar volume of the entire antenna device. Utility Model Content

[0004] The purpose of this application is to provide an antenna device that improves upon the problem of large planar volume in current antenna devices.

[0005] This application provides an antenna device comprising: an antenna unit, a filtering unit, and an output unit. The antenna unit receives a first signal and a second signal. The filtering unit is communicatively connected to the antenna unit and filters the first signal into a first target signal and the second signal into a second target signal. The output unit is communicatively connected to the filtering unit and outputs the first target signal and the second target signal. The filtering unit includes a band-stop filter module and a band-pass filter module. The band-stop filter module includes a first filter circuit board, and the band-pass filter module includes a second filter circuit board. The thickness directions of both the first and second filter circuit boards are first directions, and the band-stop filter module and the band-pass filter module are arranged along the first direction.

[0006] In one embodiment, the antenna device includes: a base and an outer cover, the outer cover being disposed on the base, the base and the outer cover being arranged along a first direction, and the antenna element being disposed on the base and located inside the outer cover; The base includes: a first cover plate, a side panel, and a second cover plate, wherein the first cover plate and the second cover plate are both connected to the side panel, and the first cover plate and the second cover plate are distributed along the first direction; The first cover plate, the side panel, and the second cover plate together form a filter cavity, the second cover plate and the side panel together form an output cavity, the band-stop filter module and the band-pass filter module are disposed in the filter cavity, and the output unit is disposed in the output cavity.

[0007] In one embodiment, the first filter circuit board is disposed in the filter cavity, and the first filter circuit board, the first cover plate, and the side plate located between the first filter circuit board and the first cover plate divide the band-stop filter cavity. The second filter circuit board is disposed in the filter cavity. The second filter circuit board, the second cover plate, and the side plate located between the second filter circuit board and the second cover plate divide the bandpass filter cavity. The bandstop filter cavity and the bandpass filter cavity are arranged along the first direction.

[0008] In one embodiment, the filtering unit further includes a connector disposed in the filtering cavity and communicating with the band-stop filtering cavity and the band-pass filtering cavity. The connector is communicatively connected to the first filtering circuit board and to the second filtering circuit board. The connector is used to transmit the first target signal to the second filtering circuit board and to the output unit through the second filtering circuit board.

[0009] In one embodiment, the filtering unit further includes a third connector disposed in the filtering cavity, the second filtering circuit board being communicatively connected to the output unit via the third connector, the third connector being used to synthesize the first target signal and the second target signal, and to transmit the first target signal and the second target signal to the output unit in the antenna device.

[0010] In one embodiment, the base further includes a partition, the partition being disposed in the filter cavity, and the band-stop filter module and the band-pass filter module being disposed on opposite sides of the partition.

[0011] In one embodiment, the partition has a first surface and a second surface facing away from each other, with the soldering surface of the first filter circuit board connected to the first surface and the soldering surface of the second filter circuit board connected to the second surface.

[0012] In one embodiment, the antenna unit includes a navigation antenna module and a mobile communication antenna module, both of which are disposed on the first cover plate. The navigation antenna module includes a first radio frequency connector, and the mobile communication antenna module includes a second radio frequency connector. The band-stop filter module further includes a first connector and a second connector. The first radio frequency connector is connected to the first connector and is used to transmit the first signal to the band-stop filter module. The second radio frequency connector is connected to the second connector and is used to transmit the second signal to the band-stop filter module.

[0013] In one embodiment, the output unit includes an output circuit board and an RF connector. The output circuit board is disposed within the output cavity, and one end of the RF connector is connected to the output circuit board, while the other end is used to connect to an external terminal device.

[0014] In one embodiment, the base further includes a third cover plate, which is connected to the side panel and is used to close the output cavity, and the radio frequency connector passes through the third cover plate.

[0015] According to the antenna device in the above embodiments, after the antenna unit receives the first signal and the second signal, it uses a filtering unit to filter the first signal and the second signal, and finally uses an output unit to output the filtered first target signal and the second target signal. By integrating the band-stop filter module and the band-pass filter module in the filtering unit together and setting them to be distributed along a first direction, the first direction is the thickness direction of the first filter circuit board in the band-stop filter module, and the first direction is also the thickness direction of the second filter circuit board in the band-pass filter module. This can reduce the planar volume of the circuit in the filtering unit, thereby helping to reduce the planar volume of the entire antenna device and improving the problem of large planar volume of antenna devices in related technologies. Attached Figure Description

[0016] Figure 1 An exploded view of an antenna device provided in an embodiment of this application.

[0017] Figure 2 This is a cross-sectional view of a filtering unit in an antenna device provided in an embodiment of this application.

[0018] in: 1. Antenna assembly; 10. Antenna unit; 110. Navigation antenna module; 120. Mobile communication antenna module; 130. First RF connector; 140. Second RF connector; 20. Filtering unit; 211. First filter circuit board; 212. First connector; 221. Second filter circuit board; 222. Second connector; 230. Connector; 240. Third connector; 30. Output unit; 310. Output circuit board; 320. RF connector; 40. Base; 410. First cover plate; 420. Side panel; 430. Second cover plate; 440. Band-stop filter cavity; 450. Band-pass filter cavity; 460. Partition; 470. Third cover plate; 480. Output cavity; 50. Outer cover. Detailed Implementation

[0019] The present application will be further described in detail below with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0020] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary composition and / or order.

[0021] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0022] Please also refer to Figure 1 and Figure 2This application provides an antenna device 1, which includes an antenna unit 10, a filtering unit 20, and an output unit 30. The antenna unit 10 is used to receive signals, and the filtering unit 20 is used to filter the signals received by the antenna unit 10, select a specified target signal, and then transmit the target signal to the output unit 30, which outputs the target signal. The filtering unit 20 includes a band-stop filter module (not shown in the figure) and a band-pass filter module (not shown in the figure). The band-stop filter module includes a first filter circuit board 211, and the band-pass filter module includes a second filter circuit board 221. The thickness direction of both the first filter circuit board 211 and the second filter circuit board 221 is a first direction (i.e., the vertical direction in the figure). The band-stop filter module and the band-pass filter module are arranged along the first direction, which helps to reduce the planar volume occupied by the filtering unit 20, and thus helps to reduce the planar volume occupied by the entire antenna device 1.

[0023] In this embodiment, the antenna device 1 includes a base 40 and an outer cover 50. The outer cover 50 covers the base 40. In this embodiment, the base 40 and the outer cover 50 are arranged along a first direction, which is the thickness direction of the base 40. The antenna element 10 is disposed on the base 40 and located inside the outer cover 50. This can also reduce the planar volume occupied by the entire antenna device 1.

[0024] In one embodiment, the base 40 may include a first cover plate 410, a side panel 420, and a second cover plate 430, wherein the first cover plate 410 and the second cover plate 430 are both connected to the side panel 420. In this embodiment, the first cover plate 410 and the second cover plate 430 are also distributed along a first direction. The first cover plate 410, the side panel 420, and the second cover plate 430 together form a filter cavity, and the second cover plate 430 and the side panel 420 together form an output cavity 480. The filter unit 20 is disposed in the filter cavity, and the output unit 30 is disposed in the output cavity 480.

[0025] Antenna unit 10 can be used to receive a first signal and a second signal. This application embodiment does not limit the specific forms of the first and second signals. For example, in some embodiments, the first signal and the second signal can be a mobile communication signal and a navigation signal, respectively. Specifically, in this embodiment, antenna unit 10 may include a mobile communication antenna module 120 and a navigation antenna module 110. Both the mobile communication antenna module 120 and the navigation antenna module 110 are disposed on the base 40, specifically on the first cover plate 410.

[0026] In this embodiment, the mobile communication antenna module 120 may include a first receiving body and a first radio frequency connector 130. The first receiving body is used to receive a first signal, wherein the frequency of the first signal is 825-960MHz & 1710-2500MHz. This application embodiment does not limit the specific form and structure of the first receiving body. For example, it may include a first conical array, a second conical array, and a support column. The first conical array is used to receive the first signal. The first radio frequency connector 130 is connected to the first conical array and is used to transmit the first signal to the filtering unit 20, and specifically to the first filtering circuit board 211 in the band-stop filtering module. In one embodiment, the band-stop filtering module may further include a first connector 212, and the first filtering circuit board 211 and the first radio frequency connector 130 may be communicatively connected through the first connector 212.

[0027] It should be noted that in this embodiment, the band-stop filter module can suppress up to 45dB in the 1557~1612MHz frequency band, and the in-band loss in the 824~960MHz and 1710~2500MHz frequency bands is less than 1.2dB, with a VSWR of less than 1.5, demonstrating excellent performance.

[0028] One end of the second conical array is connected to the first conical array, and the other end is connected to the first cover plate 410. A support column is connected between the first and second conical arrays to enhance the connection stability between them, thereby enhancing the connection stability between the first and second conical arrays and the first cover plate 410. It is understood that in some other embodiments, a third or fourth conical array may also be provided, with the same function and arrangement as the second conical array, to enhance the stability between the first conical array and the first cover plate 410.

[0029] The navigation antenna module 110 may include a second receiving body and a second RF connector 140. The second receiving body is used to receive a second signal, wherein the frequency of the second signal is 1559MHz-1606MHz. This application embodiment does not limit the specific form and structure of the second receiving body; for example, it may be a ceramic antenna. In some other embodiments, the navigation antenna module 110 may also include a low-noise amplifier circuit unit. The second RF connector 140 is connected to the second receiving body and is used to transmit the second signal to the filtering unit 20 after passing through the low-noise amplifier circuit unit, specifically to the second filter circuit board 221 in the bandpass filter module. In one embodiment, the bandpass filter module may further include a second connector 222, through which the second filter circuit board 221 and the second RF connector 140 can be communicatively connected.

[0030] It should be noted that in this embodiment, the bandpass filter module can suppress up to 45dB in the 824~960MHz and 1710~2500MHz frequency bands, and has a band loss of less than 2.1dB and a standing wave ratio of less than 1.4 in the 1557~1612MHz frequency band, demonstrating excellent performance.

[0031] In one embodiment, the low-noise amplifier circuit unit may have a two-stage filtering and two-stage amplification circuit. The second signal can be further eliminated by filtering and then amplifying, and then filtering and then amplifying again, while amplifying the second target signal.

[0032] As mentioned above, in this embodiment, both the band-stop filter module and the band-pass filter module can be disposed within the filter cavity. Specifically, both the first filter circuit board 211 and the second filter circuit board 221 can be disposed within the filter cavity and connected to the side panel 420. The first filter circuit board 211 can be used to filter and select the first signal and output the first target signal, and the second filter circuit board 221 can be used to filter and select the second signal and output the second target signal.

[0033] The first filter circuit board 211, the first cover plate 410, and the side plate 420 located between the first filter circuit board 211 and the first cover plate 410 divide the band-stop filter cavity 440. The second filter circuit board 221, the second cover plate 430, and the side plate 420 located between the second filter circuit board 221 and the second plate divide the band-pass filter cavity 450. In this embodiment, the band-stop filter cavity 440 and the band-pass filter cavity 450 are also arranged along the first direction, which can help reduce the planar volume occupied by the filter unit 20, and thus help reduce the planar volume occupied by the entire antenna device 1.

[0034] In addition, in one embodiment, the base 40 may further include a partition 460, which is also disposed within the filter cavity and located between the first cover plate 410 and the second cover plate 430. In this embodiment, the band-stop filter cavity 440 may be formed by the first cover plate 410, the partition plate 460, and the side panel 420 between the first cover plate 410 and the partition plate 460, and the band-pass filter cavity 450 may be formed by the second cover plate 430, the partition plate 460, and the side panel 420 between the second cover plate 430 and the partition plate 460. Compared with the aforementioned embodiments, the ends of the first filter circuit board 211 and the second filter circuit board 221 are connected to the side panel 420, and their contact area is smaller. Although this can serve to divide the cavity, its structural stability is relatively poor. In this embodiment, the surfaces of the first filter circuit board 211 and the second filter circuit board 221 can be connected to the partition 460, which increases the contact area between the first filter circuit board 211 and the second filter circuit board 221 and the base 40, thereby improving the stability of the connection between the first filter circuit board 211 and the second filter circuit board 221 and the base 40.

[0035] It is understood that both the first filter circuit board 211 and the second filter circuit board 221 have two opposing surfaces, one of which is the component surface and the other is the soldering surface. In one embodiment, the component surfaces of the first filter circuit board 211 and the second filter circuit board 221 can be arranged opposite to each other. That is to say, in this embodiment, the band-stop filter cavity 440 and the band-pass filter cavity 450 can be arranged approximately in mirror image.

[0036] As mentioned above, in this embodiment, the partition 460 has a first surface and a second surface facing away from each other. The soldering surface of the first filter circuit board 211 is connected to the first surface, and the soldering surface of the second filter circuit board 221 is connected to the second surface. That is, in this embodiment, the component surface of the first filter circuit board 211 faces the first cover plate 410, and the component surface of the second filter circuit board 221 faces the second cover plate 430. When either the first filter circuit board 211 or the second filter circuit board 221 malfunctions, only one of the first cover plate 410 or the second cover plate 430 needs to be removed to expose the component surface of either the first filter circuit board 211 or the second filter circuit board 221, thereby facilitating the repair or replacement of either the first filter circuit board 211 or the second filter circuit board 221.

[0037] Furthermore, in one embodiment, the filtering unit 20 may further include a connector 230, which may be disposed within the filtering cavity and connect the band-stop filtering cavity 440 and the band-pass filtering cavity 450. The connector 230 is communicatively connected to the first filtering circuit board 211 and the second filtering circuit board 221. The connector 230 is used to transmit the first target signal to the second filtering circuit board 221, and then to the output unit 30 via the second filtering circuit board 221. That is, in this embodiment, there is partial overlap in the output paths of the first target signal and the second target signal, which also reduces the planar volume occupied by the filtering unit 20.

[0038] It should be noted that connector 230 produces a stable frequency response in the 1557~1612MHz, 824~960MHz and 1710~2500MHz frequency bands, and obtains a stable combined signal of the first target signal and the second target signal.

[0039] The output unit 30 may include an output circuit board 310 and an RF connector 320. The output circuit board 310 is disposed within the output cavity 480. One end of the RF connector 320 is connected to the output circuit board 310, and the other end is used to connect to an external terminal device. This application does not limit the specific form of the aforementioned terminal device; for example, it may be a car, train, or other means of transportation.

[0040] In one specific embodiment, the output circuit board 310 can be disposed on the surface of the second cover plate 430 away from the filter cavity. The output circuit board 310 is communicatively connected to the second filter circuit board 221. The first target signal and the second target signal can be transmitted to the output circuit board 310 after passing through the second filter circuit board 221. The output circuit board 310 can be used to output the first target signal and the second target signal to the radio frequency connector 320, and then output to the terminal device.

[0041] In addition, in one embodiment, the filtering unit 20 may further include a third connector 240, which may be disposed in the filtering cavity, and the second filtering circuit board 221 and the output circuit board 310 may be communicatively connected through the third connector 240. The third connector 240 may be used to combine the first target signal and the second target signal to form a combined signal, and transmit the combined signal after combining the first target signal and the second target signal to the output circuit board 310.

[0042] Furthermore, in one embodiment, the base 40 may also include a third cover plate 470, which is connected to the side panel 420 and is used to enclose the output cavity 480. The RF connector 320 can pass through the third cover plate 470. In this embodiment, the output circuit board 310 can be in a closed environment, which helps to avoid or reduce the influence of the external environment on the output circuit board 310, and thus helps to ensure the stable operation of the output circuit board 310.

[0043] In summary, the antenna device 1 provided in this application embodiment, wherein after the antenna unit 10 receives the first signal and the second signal, it uses the filtering unit 20 to filter the first signal and the second signal, and finally uses the output unit 30 to output the filtered first target signal and the second target signal. By integrating the band-stop filter module and the band-pass filter module in the filtering unit 20 together and setting them to be distributed along a first direction, the first direction is the thickness direction of the first filter circuit board 211 in the band-stop filter module, and the first direction is also the thickness direction of the second filter circuit board 221 in the band-pass filter module. This can reduce the planar volume of the circuit in the filtering unit 20, thereby helping to reduce the planar volume of the entire antenna device 1 and improving the problem of large planar volume of the antenna device 1 in related technologies.

[0044] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An antenna device, characterized in that, The antenna device includes: Antenna unit, the antenna unit being used to receive a first signal and a second signal; A filtering unit, communicatively connected to the antenna unit, is used to filter the first signal into a first target signal and the second signal into a second target signal; and An output unit is communicatively connected to the filtering unit, and the output unit is used to output the first target signal and the second target signal; The filtering unit includes a band-stop filter module and a band-pass filter module. The band-stop filter module includes a first filter circuit board, and the band-pass filter module includes a second filter circuit board. The thickness direction of the first filter circuit board and the thickness direction of the second filter circuit board are both a first direction, and the band-stop filter module and the band-pass filter module are arranged along the first direction.

2. The antenna device as claimed in claim 1, characterized in that, The antenna device includes: a base and an outer cover, the outer cover being disposed on the base, the base and the outer cover being arranged along the first direction, and the antenna element being disposed on the base and located inside the outer cover; The base includes: a first cover plate, a side panel, and a second cover plate, wherein the first cover plate and the second cover plate are both connected to the side panel, and the first cover plate and the second cover plate are distributed along the first direction; The first cover plate, the side panel, and the second cover plate together form a filter cavity, the second cover plate and the side panel together form an output cavity, the band-stop filter module and the band-pass filter module are disposed in the filter cavity, and the output unit is disposed in the output cavity.

3. The antenna device as described in claim 2, characterized in that, The first filter circuit board is disposed in the filter cavity, and the first filter circuit board, the first cover plate, and the side plate located between the first filter circuit board and the first cover plate divide the band-stop filter cavity. The second filter circuit board is disposed in the filter cavity. The second filter circuit board, the second cover plate, and the side plate located between the second filter circuit board and the second cover plate divide the bandpass filter cavity. The bandstop filter cavity and the bandpass filter cavity are arranged along the first direction.

4. The antenna device as described in claim 3, characterized in that, The filtering unit further includes a connector disposed in the filtering cavity and communicating with the band-stop filtering cavity and the band-pass filtering cavity. The connector is communicatively connected to the first filtering circuit board and to the second filtering circuit board. The connector is used to transmit the first target signal to the second filtering circuit board and to the output unit through the second filtering circuit board.

5. The antenna device as described in claim 4, characterized in that, The filtering unit further includes a third connector disposed in the filtering cavity. The second filtering circuit board and the output unit are communicatively connected through the third connector. The third connector is used to synthesize the first target signal and the second target signal, and transmit the first target signal and the second target signal to the output unit in the antenna device.

6. The antenna device as claimed in claim 2, characterized in that, The base also includes a partition, which is disposed in the filter cavity, and the band-stop filter module and the band-pass filter module are respectively disposed on opposite sides of the partition.

7. The antenna device as claimed in claim 6, characterized in that, The partition has a first surface and a second surface facing away from each other, the soldering surface of the first filter circuit board is connected to the first surface, and the soldering surface of the second filter circuit board is connected to the second surface.

8. The antenna device as claimed in claim 2, characterized in that, The antenna unit includes a navigation antenna module and a mobile communication antenna module, both of which are disposed on the first cover plate. The navigation antenna module includes a first radio frequency connector, and the mobile communication antenna module includes a second radio frequency connector. The band-stop filter module further includes a first connector and a second connector. The first radio frequency connector is connected to the first connector and is used to transmit the first signal to the band-stop filter module. The second radio frequency connector is connected to the second connector and is used to transmit the second signal to the band-stop filter module.

9. The antenna device as claimed in claim 2, characterized in that, The output unit includes an output circuit board and an RF connector. The output circuit board is disposed in the output cavity and is communicatively connected to the second filter circuit board. One end of the RF connector is connected to the output circuit board, and the other end is used to connect to an external terminal device.

10. The antenna device as claimed in claim 9, characterized in that, The base also includes a third cover plate, which is connected to the side panel and is used to close the output cavity, and the radio frequency connector passes through the third cover plate.

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