CN220873846U - Antenna system applied to small electronic device and electronic device thereof - Google Patents
Antenna system applied to small electronic device and electronic device thereof Download PDFInfo
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- CN220873846U CN220873846U CN202322623403.9U CN202322623403U CN220873846U CN 220873846 U CN220873846 U CN 220873846U CN 202322623403 U CN202322623403 U CN 202322623403U CN 220873846 U CN220873846 U CN 220873846U
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- 230000005855 radiation Effects 0.000 description 5
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Abstract
The application discloses an antenna system applied to a small electronic device and the electronic device thereof, which are characterized in that the antenna system comprises a substrate, a Bluetooth antenna electric feed terminal, a Bluetooth antenna body, a grounding microstrip line and a resonance adjusting element. The substrate is provided with a grounding wiring area. The Bluetooth antenna electric feed terminal is arranged on the substrate and connected with the Bluetooth antenna body. The grounding microstrip line is arranged on the substrate, is connected with the Bluetooth antenna electric feed terminal and is far away from the grounding wiring area. The resonance adjusting element is arranged on the substrate, one end of the resonance adjusting element is connected with the grounding microstrip line, and the other end of the resonance adjusting element is connected with the grounding trace area. The grounding microstrip line and the resonance adjusting element are arranged on the substrate, the grounding microstrip line is used for radiating the Bluetooth antenna body, and the resonance adjusting element is used for changing the electric length of the grounding microstrip line, so that the effects of improving the overall antenna efficiency and adjusting the antenna resonance can be achieved.
Description
Technical Field
The present application relates to an antenna system, and more particularly, to an antenna system for a small electronic device.
Background
The small-sized electronic devices such as the positioner are limited in size and are influenced by the size of the internal battery, the positive and negative pole shrapnel of the battery, the size of the circuit board and the like, so that the internal space of the small-sized electronic devices is compact. In general, in addition to bluetooth antenna systems, other antenna systems such as Near Field Communication (NFC) antennas exist in small electronic devices, so that the available design space of the bluetooth antenna is seriously insufficient, which affects the antenna performance and results in low antenna efficiency.
Therefore, how to provide an antenna system capable of improving the antenna performance is a problem to be solved in the industry.
Disclosure of utility model
The embodiment of the application provides an antenna system applied to a small electronic device and the electronic device thereof, which can solve the problem of low pin rate of the antenna system of the existing small electronic device.
In order to solve the above-mentioned problems, an embodiment of the present application provides an antenna system for a small electronic device, the antenna system includes a substrate, a bluetooth antenna electric feed terminal, a bluetooth antenna body, a grounding microstrip line, and a resonance adjusting element. The substrate is provided with a grounding wiring area. The Bluetooth antenna electric feed terminal is arranged on the substrate and connected with the Bluetooth antenna body. The grounding microstrip line is arranged on the substrate, is connected with the Bluetooth antenna electric feed terminal and is far away from the grounding wiring area. The resonance adjusting element is arranged on the substrate, one end of the resonance adjusting element is connected with the grounding microstrip line, and the other end of the resonance adjusting element is connected with the grounding trace area.
An embodiment of the application provides an electronic device, which includes a housing and the antenna system, wherein the antenna system is disposed on a substrate module, the substrate module is located in a containing space in the housing, the bluetooth antenna body is partially fixed on an inner wall of the housing, and the bluetooth antenna body extends along the inner wall of the housing.
In this embodiment, the grounding microstrip line and the resonance adjusting element are disposed on the substrate, so that the grounding microstrip line is involved in radiation of the bluetooth antenna body, and the resonance adjusting element is used to change an electrical length of the grounding microstrip line, thereby improving overall antenna efficiency and adjusting antenna resonance.
In order to make the above features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
Fig. 1 is a schematic diagram of an embodiment of an antenna system of the present application applied to a small electronic device.
Fig. 2 is an enlarged view of a portion of the area a in fig. 1.
Fig. 3 is a schematic layout diagram of the area a.
Fig. 4 is a schematic diagram of a component configuration of the antenna system of the present application.
Fig. 5 is an equivalent circuit diagram of the antenna system of the present application.
Fig. 6 is a schematic view of an embodiment of a small electronic device of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1 to 4, fig. 1 is a schematic diagram illustrating an embodiment of an antenna system of the present application applied to a small electronic device, fig. 2 is a partially enlarged view of a region a in fig. 1, fig. 3 is a schematic layout diagram of the region a, and fig. 4 is a schematic layout diagram of components of the antenna system.
The small electronic device 1 comprises a substrate module comprising a substrate 10, the substrate 10 having a first surface 11 and a second surface 12, the first surface 11 and the second surface 12 being located on opposite sides of each other. The first surface 11 is configured with a grounding microstrip line 40 and a grounding trace region 50, and the grounding microstrip line 40 is not connected to the grounding trace region 50 and is far away from the grounding trace region 50. A bluetooth antenna electrical feed terminal 20 and a plurality of NFC antenna electrical feed terminals 95 are provided on the first surface 11.
The bluetooth antenna electrical feed terminal 20 is disposed on the grounding microstrip line 40, is in contact with the grounding microstrip line 40, and is electrically connected with the component disposed on the second surface 12 through the through hole on the substrate 10. The bluetooth antenna electric feed terminal 20 is connected with the bluetooth antenna body 30 in a contact manner. Therefore, when the bluetooth antenna electric feed terminal 20 feeds, the grounding microstrip line 40 and the bluetooth antenna body 30 can radiate cooperatively to improve radiation efficiency.
The plurality of NFC antenna electrical feedback terminals 95 are respectively connected to two ends of the NFC antenna coil 90 in a contact manner, and are electrically connected to an NFC chip (not shown) through a through hole on the substrate 10, so as to form a communication loop between the NFC antenna coil 90 and the NFC chip.
Further, the ground microstrip line 40 has a first end 41, a second end 42, and an extension 43 connected between the first end 41 and the second end 42. The ground microstrip line 40 may be disposed along an edge of the first surface 11 of the substrate 10, as shown in fig. 3, and the present application is not limited thereto. In one embodiment, the distance between the ground microstrip line 40 and the ground trace region 50 is equal to or greater than 3 mm. In an embodiment, the grounded microstrip line 40 may define a length from the first end 41 along the extension 43 to the second end 42, the length being equal to or greater than 8 millimeters. In an embodiment, the width of the grounding microstrip line 40 is equal to or greater than 0.3 mm, for example, the width of the extension 43 may be 0.3 mm, and the first end 41 may be greater than 0.3 mm in cooperation with the dimension of the bluetooth antenna electrical feedback terminal 20, and the application is not limited thereto. Therefore, the present application can achieve the purpose of improving the efficiency of the whole antenna assembly AN by arranging the grounding microstrip line 40 and participating in the radiation of the bluetooth antenna body 30 by the grounding microstrip line 40.
Further, the first surface 11 of the substrate 10 is provided with a resonance adjusting element 60, one end of which is connected to the second end 42 of the grounding microstrip line 40, and the other end of which is connected to the grounding trace region 50. In one embodiment, the resonance adjusting element 60 is a capacitive element, an inductive element, or a combination of capacitive and inductive elements. For example, the resonance adjusting element 60 is implemented by a series connection of a capacitive element and an inductive element, a parallel connection of a capacitive element and an inductive element, or a series-parallel connection of a capacitive element and an inductive element. Thus, the application can adjust the antenna resonance by adjusting the capacitance or inductance of the resonance adjusting element 60.
Further, the second surface 12 of the substrate 10 is provided with a bluetooth chip 80 and a matching circuit 70, the bluetooth chip 80 is connected with the matching circuit 70, and the matching circuit 70 is electrically connected with the bluetooth antenna electric feedback terminal 20 through the through hole of the substrate 10, thereby providing the radiation signal to the bluetooth antenna electric feedback terminal 20.
In one embodiment, the small electronic device 1 is a positioner, for example.
In one embodiment, the bluetooth antenna body 30 is a Flexible Printed Circuit (FPC) antenna.
Referring to fig. 5, fig. 5 is an equivalent circuit diagram of the antenna system of the present application. In this embodiment, the antenna system includes a bluetooth chip 80, a matching circuit 70, AN antenna assembly AN and a resonance adjusting element 60, wherein the matching circuit 70 is electrically connected between the bluetooth chip 80 and the antenna assembly AN, and the resonance adjusting element 60 is electrically connected with the antenna assembly AN, and the antenna assembly AN is commonly implemented by the grounding microstrip line 40 and the bluetooth antenna body 30.
Further, the matching circuit 70 includes a radio frequency matching circuit 71 and AN antenna matching circuit 72, the radio frequency matching circuit 71 is electrically connected to the bluetooth chip 80 and the antenna matching circuit 72, and the antenna matching circuit 72 is electrically connected to the antenna assembly AN. The rf matching circuit 71 includes a first capacitor C1, a first inductor L1, a second capacitor C2, and a third capacitor C3. One end of the first capacitor C1 is connected to the bluetooth chip 80, and the other end is grounded. One end of the first inductor L1 is connected to one end of the first capacitor C1, and the other end is connected to the second capacitor C2. One end of the second capacitor C2 is connected to the other end of the first inductor L1, and the other end is grounded. One end of the third capacitor C3 is connected to one end of the second capacitor C2, and the other end is electrically connected to the antenna matching circuit 72. The antenna matching circuit 72 includes a fourth capacitor C4, a second inductor L2, and a fifth capacitor C5. One end of the fourth capacitor C4 is connected with the other end of the third capacitor C3, and the other end is grounded. One end of the second inductor L2 is connected to one end of the fourth capacitor C4, and the other end is electrically connected to the antenna element AN. One end of the fifth capacitor C5 is connected to the other end of the second inductor L2, and the other end is grounded. In the present embodiment, the first inductor L1, the second inductor L2, the first capacitor C1, the second capacitor C2, the fourth capacitor C4, and the fifth capacitor C5 can be electrically connected and grounded through the through holes on the substrate 10 and the traces on the first surface 11 and the second surface 12. Therefore, the antenna system can adjust the impedance of the antenna assembly AN by the antenna matching circuit 72, so that the antenna system can achieve 50 ohm impedance matching, and the overall reflection loss is reduced.
Referring to fig. 1, 2 and 6, the small electronic device 1 further includes a housing and an antenna system, the antenna system is disposed on the substrate module, the housing includes an upper housing 110 and a lower housing 120, a receiving space is formed between the upper housing 110 and the lower housing 120, the substrate module is disposed in the receiving space, and a bluetooth antenna body 30 of the antenna system is partially fixed on an inner wall of the lower housing 120 and extends along an inner wall of the lower housing 120.
In summary, through the above configuration, the antenna system of the present application can adjust the impedance of the antenna element AN by the matching circuit 70, so that the antenna system can achieve 50 ohm impedance matching, reduce the overall reflection loss, effectively improve the efficiency of the overall antenna element AN by using the grounding microstrip line 40 to participate in the radiation of the bluetooth antenna body 30, and compensate the condition of insufficient electrical length of the antenna element AN by using the resonance adjusting element 60 to adjust the resonance of the antenna element AN.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the scope of the present application.
Claims (10)
1. An antenna system for a small electronic device, comprising:
the substrate is provided with a grounding wiring area;
the Bluetooth antenna electric feed terminal is arranged on the substrate;
the Bluetooth antenna body is connected with the Bluetooth antenna electric feed terminal;
The grounding microstrip line is arranged on the substrate, is connected with the Bluetooth antenna electric feed terminal and is far away from the grounding wiring area; and
And the resonance adjusting element is arranged on the substrate, one end of the resonance adjusting element is connected with the grounding microstrip line, and the other end of the resonance adjusting element is connected with the grounding trace area.
2. The antenna system of claim 1, wherein the ground microstrip line is at a distance of 3 millimeters or more from the ground trace region.
3. The antenna system of claim 1, wherein the length of the ground microstrip line is equal to or greater than 8 millimeters.
4. The antenna system of claim 1, wherein the width of the ground microstrip line is equal to or greater than 0.3 millimeters.
5. The antenna system of claim 1, wherein the resonance-adjusting element is a capacitive element, an inductive element, or a combination of a capacitive element and an inductive element.
6. The antenna system of claim 1, wherein the bluetooth antenna body is a flexible board antenna.
7. The antenna system of claim 1, further comprising:
And the matching circuit is arranged on the substrate, one end of the matching circuit is connected with the Bluetooth antenna electric feed terminal, and the other end of the matching circuit is connected with the Bluetooth chip.
8. The antenna system of claim 7, wherein the matching circuit comprises a radio frequency matching circuit comprising:
One end of the first capacitor is connected with the Bluetooth chip, and the other end of the first capacitor is connected with the grounding wiring area;
one end of the first inductor is connected with one end of the first capacitor;
One end of the second capacitor is connected with the other end of the first inductor, and the other end of the second capacitor is connected with the grounding wiring area; and
And one end of the third capacitor is connected with one end of the second capacitor.
9. The antenna system of claim 8, wherein the matching circuit comprises an antenna matching circuit coupled to the radio frequency matching circuit comprising:
One end of the fourth capacitor is connected with the other end of the third capacitor, and the other end of the fourth capacitor is connected with the grounding wiring area;
One end of the second inductor is connected with one end of the fourth capacitor, and the other end of the second inductor is connected with the Bluetooth antenna electric feed terminal; and
And one end of the fifth capacitor is connected with the other end of the second inductor, and the other end of the fifth capacitor is connected with the grounding wiring area.
10. An electronic device, comprising: a housing and an antenna system according to any one of claims 1-9, said antenna system being arranged on a substrate module, said substrate module being located in a receiving space within said housing, said bluetooth antenna body portion being secured to said housing inner wall, said bluetooth antenna body extending along said housing inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322623403.9U CN220873846U (en) | 2023-09-26 | 2023-09-26 | Antenna system applied to small electronic device and electronic device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322623403.9U CN220873846U (en) | 2023-09-26 | 2023-09-26 | Antenna system applied to small electronic device and electronic device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220873846U true CN220873846U (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322623403.9U Active CN220873846U (en) | 2023-09-26 | 2023-09-26 | Antenna system applied to small electronic device and electronic device thereof |
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| Country | Link |
|---|---|
| CN (1) | CN220873846U (en) |
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- 2023-09-26 CN CN202322623403.9U patent/CN220873846U/en active Active
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