CN211957918U - Antenna - Google Patents
Antenna Download PDFInfo
- Publication number
- CN211957918U CN211957918U CN202020574576.XU CN202020574576U CN211957918U CN 211957918 U CN211957918 U CN 211957918U CN 202020574576 U CN202020574576 U CN 202020574576U CN 211957918 U CN211957918 U CN 211957918U
- Authority
- CN
- China
- Prior art keywords
- antenna
- radiating element
- dielectric layer
- antenna radiating
- pcb board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The utility model discloses an antenna belongs to the communication technology field. The utility model discloses an antenna is including the PCB board, first dielectric layer and the first antenna radiating element that the stromatolite set gradually, the PCB board first dielectric layer with first antenna radiating element links to each other through first feed probe, first feed probe passes in proper order first dielectric layer with first antenna radiating element, one end are located the upper surface of first antenna radiating element, the other end with the PCB board links to each other, be provided with on the PCB board with the feed network that first feed probe links to each other still includes first reflecting plate, first reflecting plate set up in the bottom surface of PCB board, the edge of first reflecting plate is provided with the second reflecting plate, the second reflecting plate to first antenna radiating element extends. The utility model discloses an antenna has increased the second reflecting plate and has improved the directional diagram of first antenna radiating element, under the condition of the same gain bandwidth, can obtain the antenna of smaller size.
Description
Technical Field
The utility model relates to the field of communication technology, concretely relates to antenna.
Background
The miniaturization of electronic devices is a permanent trend, but as a key component in a wireless communication system, the miniaturization of the antenna design inevitably causes the performance degradation of the antenna, especially the design of the GNSS high-precision satellite positioning antenna.
In the prior art, a material with a higher dielectric constant is generally adopted as a dielectric layer of a microstrip antenna, or the size of the antenna is reduced by adopting a mode of slotting on a microstrip patch, but the two modes can obviously reduce the bandwidth characteristic of the antenna, and the miniaturization and the wide bandwidth are difficult to realize simultaneously.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the embodiment of the utility model provides an antenna can effectively reduce the size of antenna.
In order to achieve the above object, an embodiment of the present invention provides an antenna, including the PCB board, first dielectric layer and the first antenna radiating element that set up in proper order stromatolite, the PCB board first dielectric layer with the first antenna radiating element links to each other through first feed probe, first feed probe passes in proper order first dielectric layer with first antenna radiating element, one end is located the upper surface of first antenna radiating element, the other end with the PCB board links to each other, be provided with on the PCB board with the feed network that first feed probe links to each other still includes first reflecting plate, first reflecting plate set up in the bottom surface of PCB board, the edge of first reflecting plate is provided with the second reflecting plate, the second reflecting plate to first antenna radiating element extends.
Optionally, an included angle between the second reflection plate and the first reflection plate is greater than or equal to 90 degrees.
Optionally, the second reflection plate includes a plurality of metal strips disposed around the first reflection plate, and a preset distance is disposed between adjacent metal strips.
Optionally, the antenna further comprises a second dielectric layer and a second antenna radiation unit which are sequentially stacked, the second dielectric layer is arranged on the first antenna radiation unit, the second dielectric layer is connected with the PCB board through a second feed probe, the second feed probe sequentially penetrates through the first dielectric layer, the first antenna radiation unit, the second dielectric layer and the second antenna radiation unit, one end of the second feed probe is arranged on the surface of the second antenna radiation unit, and the other end of the second feed probe is connected with the PCB board.
Optionally, the first antenna radiating element and the second antenna radiating element have different resonant frequencies.
Optionally, the height of the second reflector is greater than or equal to half of the height of the second dielectric layer.
Optionally, a low-noise amplification circuit is further disposed on the PCB, and the low-noise amplification circuit is connected to the feed network.
Optionally, the feeding network and the low-noise amplifying circuit are integrated on the same side of the PCB respectively.
Optionally, an accommodating area is disposed between the first reflection plate and the PCB to accommodate the feeding network and the low-noise amplification circuit.
Optionally, the resonant frequency of the first antenna radiating element is located in a low-band range of the GNSS satellite navigation, and the resonant frequency of the second antenna radiating element is located in a high-band range of the GNSS satellite navigation.
The utility model has the advantages that:
the utility model provides an antenna, the form that adopts microstrip antenna, the bottom is provided with first reflecting plate, and microstrip antenna's directional diagram can be improved to first reflecting plate to improve microstrip antenna's radiation performance, the range of improvement is related to the size of first reflecting plate, and the size of first reflecting plate is big more usually, and is higher more high to microstrip antenna's directional diagram's improvement effect, but, can increase antenna's overall dimension like this, the utility model discloses an antenna is provided with the second expelling plate at the edge of first reflecting plate, and the second reflecting plate extends to the direction of first antenna radiation unit, thereby the space of the vertical direction of rational utilization antenna has reached the effect that reduces antenna size.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a top view of an antenna of an embodiment of the present invention;
fig. 2 is a schematic middle sectional view of an antenna according to an embodiment of the present invention.
Wherein the corresponding relations between the reference numbers and the names of the components in fig. 1 and 2 are as follows:
1. a PCB board; 10. a housing area; 2. a first dielectric layer; 3. a first antenna radiating element; 4. a first feed probe; 5. a first reflection plate; 6. a second reflection plate; 7. a second dielectric layer; 8. a second antenna radiation element; 9. a second feed probe.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Referring to fig. 1 and 2, fig. 1 shows a top view of an antenna according to an embodiment of the present invention, fig. 2 shows a schematic middle sectional view of an antenna according to an embodiment of the present invention, please refer to fig. 1 and 2 together, an embodiment of the present invention provides an antenna, including a PCB board 1, a first dielectric layer 2, and a first antenna radiating unit 3 stacked in sequence, the PCB board 1, the first dielectric layer 2 and the first antenna radiating unit 3 are connected by a first feeding probe 4, wherein the first feeding probe 4 sequentially passes through the first dielectric layer 2 and the first antenna radiating unit 3, one end of the first feeding probe is disposed on an upper surface of the first antenna radiating unit 3, the other end of the first feeding probe is connected to the PCB board 1, the PCB board 1 is provided with a feeding network connected to the first feeding probe 4, and further includes a first reflection plate 5, the first reflection plate 5 is disposed on a bottom surface of the PCB board 1, an edge of the first reflection plate 5 is provided with a second reflection plate 6, the second reflecting plate 6 extends in the direction of the first antenna radiating element 3. It should be noted herein that the antenna illustrated in the drawings and described in this specification is but one example of many antennas that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details of the antenna or any components of the antenna shown in the drawings or described in the present specification.
The embodiment of the utility model provides an in, first dielectric layer 2, first antenna radiating element 3, first feed probe 4, feed network and first reflecting plate 5 form a microstrip antenna, and first antenna radiating element 3 produces the resonant frequency of predetermineeing the frequency channel to received signal, first feed probe 4 and first dielectric layer 2 are used for transmitting feed signal to feed network, and export feed signal through feed network. The first reflection plate 5 does not directly receive the parameter signal, but the first reflection plate 5 may improve the radiation pattern of the microstrip antenna, thereby improving the electrical performance of the microstrip antenna.
For the microstrip antenna, by increasing the size of the first reflection plate 5, the gain bandwidth of the microstrip antenna can be obviously increased, and the electrical performance of the microstrip antenna is improved. It should be understood by those skilled in the art that, for the antenna, the electrical performance (such as gain bandwidth) and the size are all decisive influencing factors, the electrical performance of the antenna determines the performance of the antenna, and the size of the antenna determines the application of the antenna, and nowadays, with the rapid development of electronic devices, the miniaturization of the antenna has higher and higher requirements for the application of the antenna, and it is known that, although the gain bandwidth of a microstrip antenna can be obviously increased, the size of the antenna can be increased and cannot be met at the same time, but if the size of the first reflection plate 5 is reduced, the size of the antenna can be reduced, but the gain bandwidth of the antenna can be obviously influenced.
In order to reduce the size of the antenna without causing deterioration of the electrical performance of the antenna, in the embodiment of the present invention, the second reflection plate 6 is disposed at the edge of the first reflection plate 5, and the second reflection plate 6 extends along the direction of the first antenna radiation unit 3. The provision of the second reflection plate 6 is equivalent to increasing the size of the first reflection plate 5, improving the electrical performance of the antenna, and at the same time, the second reflection plate 6 extends toward the first antenna radiation unit 3, which does not occupy the space in the radial direction of the first reflection plate 5, but utilizes the space above the edge of the first reflection plate 5 that is not used, so that the antenna in the present embodiment can obtain a smaller size and can satisfy the requirement of miniaturization under the condition that the electrical performance of the antenna is the same.
The second reflecting plate 6 extends in the direction of the first antenna radiating element 3 and comprises: the second reflecting plate 6 is perpendicular to the edge of the first reflecting plate 5, the included angle between the second reflecting plate 6 and the first reflecting plate 5 is larger than 90 degrees, and the included angle between the second reflecting plate 6 and the first reflecting plate 5 is smaller than 90 degrees. The influence of the included angle between the second reflection plate 6 and the first reflection plate 5 on the performance of the antenna can be verified by adopting simulation and experimental detection methods, and research shows that when the second reflection plate 6 is perpendicular to the edge of the first reflection plate 5 or the included angle between the second reflection plate 6 and the first reflection plate 5 is greater than or equal to 90 degrees (i.e. the second reflection plate 6 tilts outward along the direction close to the first antenna radiation unit 3), the gain bandwidth of the antenna can be obviously increased by the setting of the second reflection plate 6, and when the included angle between the second reflection plate 6 and the first reflection plate 5 is less than 90 degrees, the influence of the setting of the second reflection plate 6 on the gain bandwidth of the antenna is not obvious, therefore, in the embodiment of the present invention, the method can be selected as: the second reflecting plate 6 is perpendicular to the edge of the first reflecting plate 5 or the included angle between the second reflecting plate 6 and the first reflecting plate 5 is greater than or equal to 90 degrees.
In an alternative embodiment, the antenna further comprises a second dielectric layer 7, a second antenna radiating element 8 and a second feed probe 9. The second dielectric layer 7 and the second antenna radiation unit 8 are sequentially arranged in a laminated manner, the second dielectric layer 7 is arranged on the first antenna radiation unit 3 in a laminated manner, the second feed probe 9 sequentially penetrates through the first dielectric layer 2, the first antenna radiation unit 3, the second dielectric layer 7 and the second antenna radiation unit 8, one end of the second feed probe 9 is connected with the feed network, and the other end of the second feed probe 9 is arranged on the upper surface of the second antenna radiation unit 8. The arrangement of the second dielectric layer 7, the second antenna radiation unit 8, and the second feed probe 9 is equivalent to adding a microstrip antenna, and the two microstrip antennas share one first reflection plate 5 and one second reflection plate 6.
The first antenna radiating element 3 and the second antenna radiating element 8 may be made of metal sheets, and the shapes of the two elements may be selected from various shapes such as a circle, a rectangle, and the like, and in this embodiment, the shapes are selected from a circle.
The first dielectric layer 2 and the second dielectric layer 7 can be selected to be air dielectric or solid dielectric with dielectric constant larger than air. The dielectric constant can affect the overall size and broadband characteristics of the antenna, and the higher the dielectric constant is, the smaller the overall size is, and the narrower the broadband is; the smaller the dielectric constant is, the larger the overall size is, and the wider the broadband is; therefore, it is necessary to select appropriate dielectrics for the first dielectric layer 2 and the second dielectric layer 7 according to actual requirements.
In the optional embodiment of the present invention, the cross-sectional areas of the first dielectric layer 2, the first antenna radiating element 3, the second dielectric layer 7, and the second antenna radiating element 8 are gradually reduced from bottom to top to form a stacked structure.
After receiving the antenna signal, the first antenna radiation unit 3 and the second antenna radiation unit 8 respectively transmit the antenna signal to the feed network through the first feed probe 4 and the second feed probe 9, and then transmit the antenna signal to the receiving device through the feed network. The low-noise amplifying circuit is a special electronic amplifier, which is mainly used for amplifying signals received from an antenna in a communication system so as to be convenient for processing by a post-stage electronic device.
In one embodiment, the feeding network and the low-noise amplifying circuit are both disposed on the same side of the PCB board 1, so as to reduce the thickness of the antenna. Optionally, an accommodating area 10 is provided between the PCB 1 and the first reflection plate 5, and the low noise amplifying circuit is integrated on a side of the PCB 1 away from the first dielectric layer 2, however, the low noise amplifying circuit has a certain thickness, and for this reason, in this embodiment, an accommodating area 10 is provided between the PCB 1 and the first reflection plate 5 for accommodating the low noise amplifying circuit.
The applicant conducted tests with the second reflection plate 6 regarding the effect of the second reflection plate 6 on the antenna.
The influence of the height of the second reflector 6 on the gain bandwidth of the antenna. Taking the second reflection plate 6 perpendicular to the edge of the first reflection plate 5 as an example, when the height of the second reflection plate 6 is higher, the gain bandwidth of the antenna is improved more significantly by the second reflection plate 6, for example, when the height of the second reflection plate 6 is greater than or equal to a half of the height of the second dielectric layer 7, the gain bandwidth of the antenna is improved significantly by the second reflection plate 6.
When the second reflection plate 6 is formed by enclosing a plurality of metal strips along the edge of the first reflection plate 5 and any two adjacent metal strips have a preset distance therebetween, the second reflection plate 6 has a very obvious effect on improving the gain bandwidth of the antenna, and when the second reflection plate 6 is a full-circle ring structure formed by enclosing the edge of the first reflection plate 5, the second reflection plate 6 has a poor effect on improving the gain bandwidth of the antenna relative to a structure having a gap.
In an alternative embodiment, the first antenna radiating element 3 and the second antenna radiating element 8 have different resonant frequencies, so as to obtain signals of different frequency bands, respectively, and improve the accuracy of the antenna. It can be seen that the utility model provides an antenna can adapt to various occasions that have strict requirements to size and precision. Taking a GNSS satellite navigation antenna as an example, it requires both the accuracy of the antenna and the smallest possible size of the antenna, for which reason the resonant frequency of the first antenna radiating element 3 is located in the low band range of GNSS satellite navigation and the resonant frequency of the second antenna radiating element 8 is located in the high band range of GNSS satellite navigation, and when used as a GNSS satellite navigation antenna, it is equivalent to integrating two high and low band antennas for receiving GNSS high band signals and GNSS low band signals.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides an antenna, its characterized in that, including PCB board, first dielectric layer and the first antenna radiating element that the stromatolite set up in proper order, the PCB board first dielectric layer with first antenna radiating element links to each other through first feed probe, first feed probe passes in proper order first dielectric layer with first antenna radiating element, one end are located the upper surface of first antenna radiating element, the other end with the PCB board links to each other, be provided with on the PCB board with the feed network that first feed probe links to each other still includes first reflecting plate, first reflecting plate set up in the bottom surface of PCB board, the edge of first reflecting plate is provided with the second reflecting plate, the second reflecting plate to first antenna radiating element extends.
2. The antenna of claim 1, wherein an angle between the second reflector plate and the first reflector plate is greater than or equal to 90 degrees.
3. The antenna of claim 1, wherein the second reflector comprises a plurality of metal strips disposed around the first reflector, and a predetermined distance is disposed between adjacent metal strips.
4. The antenna according to any one of claims 1 to 3, further comprising a second dielectric layer and a second antenna radiating element which are sequentially stacked, wherein the second dielectric layer is disposed on the first antenna radiating element, the second dielectric layer, the second antenna radiating element and the PCB are connected through a second feed probe, the second feed probe sequentially penetrates through the first dielectric layer, the first antenna radiating element, the second dielectric layer and the second antenna radiating element, one end of the second feed probe is disposed on a surface of the second antenna radiating element, and the other end of the second feed probe is connected with the PCB.
5. The antenna of claim 4, wherein the first antenna radiating element and the second antenna radiating element have different resonant frequencies.
6. The antenna of claim 5, wherein the height of the second reflector plate is greater than or equal to half the height of the second dielectric layer.
7. The antenna of claim 5, wherein a low noise amplification circuit is further disposed on the PCB board, and the low noise amplification circuit is connected to the feed network.
8. The antenna of claim 7, wherein the feed network and the low noise amplification circuit are integrated on the same side of the PCB board respectively.
9. The antenna of claim 8, wherein a receiving area is disposed between the first reflection plate and the PCB to receive the feeding network and the low noise amplification circuit.
10. The antenna of any one of claims 5 to 9, wherein the resonant frequency of the first antenna radiating element is in a low band range of GNSS satellite navigation and the resonant frequency of the second antenna radiating element is in a high band range of GNSS satellite navigation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574576.XU CN211957918U (en) | 2020-04-16 | 2020-04-16 | Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574576.XU CN211957918U (en) | 2020-04-16 | 2020-04-16 | Antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211957918U true CN211957918U (en) | 2020-11-17 |
Family
ID=73165594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020574576.XU Active CN211957918U (en) | 2020-04-16 | 2020-04-16 | Antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211957918U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615146A (en) * | 2020-11-20 | 2021-04-06 | 嘉兴佳利电子有限公司 | Method for optimizing performance of miniaturized flat antenna |
| CN113644439A (en) * | 2021-08-31 | 2021-11-12 | 维沃移动通信有限公司 | Antenna module and electronic device |
| WO2022228107A1 (en) * | 2021-04-30 | 2022-11-03 | 华为技术有限公司 | Keyboard module and electronic device |
-
2020
- 2020-04-16 CN CN202020574576.XU patent/CN211957918U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615146A (en) * | 2020-11-20 | 2021-04-06 | 嘉兴佳利电子有限公司 | Method for optimizing performance of miniaturized flat antenna |
| WO2022105164A1 (en) * | 2020-11-20 | 2022-05-27 | 嘉兴佳利电子有限公司 | Method for optimizing performance of miniaturized flat antenna |
| WO2022228107A1 (en) * | 2021-04-30 | 2022-11-03 | 华为技术有限公司 | Keyboard module and electronic device |
| CN113644439A (en) * | 2021-08-31 | 2021-11-12 | 维沃移动通信有限公司 | Antenna module and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211957918U (en) | Antenna | |
| US11183766B2 (en) | Antenna module and electronic device | |
| US6686886B2 (en) | Integrated antenna for laptop applications | |
| US4138684A (en) | Loaded microstrip antenna with integral transformer | |
| US7705788B2 (en) | Multi-band antenna | |
| US20070268188A1 (en) | Ground plane patch antenna | |
| EP3828995A1 (en) | Terminal device | |
| EP3588674A1 (en) | Dual broadband antenna system for vehicles | |
| US11978964B2 (en) | Antenna structure, circuit board with antenna structure, and communications device | |
| US20200127388A1 (en) | Antenna structure and electronic device | |
| CN109314310B (en) | Vehicle-mounted antenna | |
| EP3582323A1 (en) | Dual broadband antenna system for vehicles | |
| US20070257848A1 (en) | Multi-band antenna | |
| US10833418B2 (en) | Antenna structure | |
| CN109755758B (en) | Ultra-wide bandwidth wave beam low-profile cavity-backed antenna structure | |
| CN111162375A (en) | Broadband circularly polarized patch antenna | |
| US20110291910A1 (en) | Assembly of chip antenna and circuit board | |
| US11211697B2 (en) | Antenna apparatus | |
| US20230208049A1 (en) | Dual-frequency and dual-polarization antenna and electronic device | |
| CN201518352U (en) | Dual-frequency antenna combination | |
| US7728775B2 (en) | Radiator for an RF communication device | |
| JPH0823220A (en) | Ceramic planar antenna | |
| US8659481B2 (en) | Internal printed antenna | |
| US8044860B2 (en) | Internal antenna for mobile device | |
| US20240072444A1 (en) | Multiband patch antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |