Antenna structure and electronic equipment
By introducing main antennas and parasitic antennas into the antenna structure of small electronic devices, the parasitic radiation of parasitic antennas improves the low-frequency band performance of main antennas, solving the problem of poor low-frequency band performance in small devices, and achieving effective support for low-frequency band communication.
Patent Information
- Application Number
- CN202421369898.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The performance of antennas in small electronic devices is poor in the low frequency band and cannot effectively meet the mobile communication requirements of the low frequency band.
An antenna structure is designed, including a main antenna and a parasitic antenna, which has a first and second working frequency bands. The working frequency band of the parasitic antenna is the same as the first working frequency band of the main antenna, and the polarization characteristics of the main antenna and the parasitic antenna are opposite to improve the performance of the main antenna in the low frequency band.
The parasitic antenna is used to parasitic radiation to the first working frequency band of the main antenna, increasing the bandwidth and efficiency of the main antenna, improving its low-frequency band performance, and meeting the design requirements of small electronic devices in the low-frequency band communication.
Smart Images
Figure CN222601355U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of antenna technology, and in particular to an antenna structure and an electronic device. Background Art
[0002] For smaller electronic devices such as locators, wearable devices, TWS (True Wireless Stereo) headphones, etc., the space available for setting up antennas is relatively small, resulting in poor performance of antennas in low frequency bands and failure to meet the mobile communication requirements of low frequency bands. Utility Model Content
[0003] The embodiments of the present application provide an antenna structure and an electronic device, which can effectively improve the low-frequency performance of the antenna in a small electronic device and better meet the low-frequency communication requirements.
[0004] On the one hand, an embodiment of the present application provides an antenna structure, including a main antenna and a parasitic antenna that are correspondingly arranged, the main antenna having a first working frequency band and a second working frequency band, the first working frequency band being smaller than the second working frequency band; the working frequency band of the parasitic antenna is the same as the first working frequency band, and the polarization characteristics of the main antenna are opposite to the polarization characteristics of the parasitic antenna.
[0005] In some embodiments, one of the main antenna and the parasitic antenna is 45° polarized and the other is -45° polarized.
[0006] In some embodiments, the first operating frequency band is 700-960 MHz, and the second operating frequency band is 1710-2690 MHz.
[0007] In some embodiments, the main antenna includes a main antenna trace, a first feeding point and a first feeding point, and the main antenna trace is electrically connected to the first feeding point and the first feeding point, respectively.
[0008] In some embodiments, the parasitic antenna includes a parasitic antenna radiator and a second feeding point electrically connected in sequence.
[0009] In some embodiments, the antenna structure further includes an all-in-one antenna, wherein the all-in-one antenna includes a satellite positioning antenna and a short-range communication antenna.
[0010] In some embodiments, the operating frequency band of the short-range communication antenna is 2400-2500 MHz and 5150-5850 MHz, and the operating frequency band of the satellite positioning antenna is 1100-1600 MHz.
[0011] In some embodiments, the parasitic antenna is formed in the all-in-one antenna, and the isolation between the parasitic antenna and the main antenna is not less than -10 dB.
[0012] In some embodiments, the all-in-one antenna includes an all-in-one antenna routing line, a second feeding point and a third feeding point, and the all-in-one antenna routing line is electrically connected to the second feeding point and the third feeding point, respectively.
[0013] On the other hand, an embodiment of the present application provides an electronic device, including a device housing and the antenna structure provided by any of the above embodiments, wherein the antenna structure is arranged on the device housing.
[0014] The embodiment of the present application arranges a main antenna and a parasitic antenna in the antenna structure, and the parasitic antenna can be used to perform parasitic radiation on the first working frequency band of the main antenna, thereby increasing the bandwidth and efficiency of the main antenna when operating in the first working frequency band, and further improving the performance of the main antenna in the first working frequency band; when the above-mentioned antenna structure is applied to smaller electronic devices such as locators, wearable devices, TWS (True Wireless Stereo) headphones, etc., although the antenna setting space is small, the low-frequency band performance of the main antenna can still meet the design requirements, so that the electronic device can better realize the low-frequency band communication function. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 is a structural diagram of an antenna structure provided by some embodiments of the present application;
[0017] Figure 2 This is a structural diagram of an electronic device provided in some embodiments of the present application.
[0018] Description of main component symbols:
[0019] 100-antenna structure, 1-main antenna, 11-first feeding point, 12-first feeding point, 2-parasitic antenna, 21-second feeding point, 3-all-in-one antenna, 31-second feeding point, 32-third feeding point, 200-device housing, 300-mainboard. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.
[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0022] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.
[0023] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values can be based on additional conditions or values beyond the stated values in practice.
[0024] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.
[0025] like Figure 1 As shown, on the one hand, an embodiment of the present application provides an antenna structure 100, which includes a main antenna 1 and a parasitic antenna 2 that are correspondingly arranged, and can effectively improve the low-frequency band performance of the antenna in a small electronic device and better meet the low-frequency band communication requirements.
[0026] The main antenna 1 has a first working frequency band and a second working frequency band, and the first working frequency band is smaller than the second working frequency band. The specific ranges of the first working frequency band and the second working frequency band can be determined according to actual needs. For example, the first working frequency band can be a frequency band corresponding to a low-frequency communication network, and the second working frequency band can be a frequency band corresponding to a high-frequency communication network. This embodiment of the present application does not limit this. In some embodiments, the first working frequency band can be 700-960MHz, and the second working frequency band can be 1710-2690MHz to realize cellular network functions.
[0027] The operating frequency band of the parasitic antenna 2 is the same as the first operating frequency band, and the polarization characteristics of the main antenna 1 are opposite to those of the parasitic antenna 2, so as to improve the isolation between the main antenna 1 and the parasitic antenna 2. In this way, the parasitic antenna 2 can play a parasitic radiation role on the first operating frequency band of the main antenna 1, increase the bandwidth and efficiency of the main antenna 1 when it works in the first operating frequency band, and thus improve the performance of the main antenna 1 in the first operating frequency band; when the above antenna structure 100 is applied to small electronic devices such as locators, wearable devices, TWS (True Wireless Stereo) headphones, etc., although the antenna setting space is small, the low-frequency performance of the main antenna 1 can still meet the design requirements, so that the electronic device can better realize the low-frequency communication function.
[0028] The polarization modes of the main antenna 1 and the parasitic antenna 2 can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, one of the main antenna 1 and the parasitic antenna 2 can be polarized at 45°, and the other can be polarized at -45°. Exemplarily, the main antenna 1 is polarized at 45°, and the parasitic antenna 2 is polarized at -45°; another exemplary embodiment, the main antenna 1 is polarized at -45°, and the parasitic antenna 2 is polarized at 45°. In this way, the main antenna 1 and the parasitic antenna 2 can have opposite polarization characteristics, ensuring that the parasitic antenna 2 has a parasitic radiation effect on the first working frequency band of the main antenna 1.
[0029] The structure of the main antenna 1 can be determined according to actual needs, and this embodiment of the present application does not limit this. Figure 1 and Figure 2As shown, in some embodiments, the main antenna 1 may include a main antenna trace, a first feeding point 11 and a first feeding point 12, and the main antenna trace is electrically connected to the first feeding point 11 and the first feeding point 12, respectively. The specific structure of the main antenna trace can be determined according to actual needs, and the embodiments of the present application are not limited to this. In some examples, the main antenna trace may include a low-frequency radiator and a high-frequency radiator, and the low-frequency radiator may cover the first working frequency band to realize the reception and transmission of low-frequency signals in the low-frequency band; and the high-frequency radiator may cover the second working frequency band to realize the reception and transmission of high-frequency signals in the high-frequency band.
[0030] In some embodiments, the parasitic antenna 2 may include a parasitic antenna radiator and a second feeding point 21 electrically connected in sequence. The parasitic antenna radiator may cover the first operating frequency band to generate parasitic radiation within the first operating frequency band, thereby utilizing the parasitic radiation to increase the bandwidth and efficiency of the main antenna 1 when operating in the first operating frequency band.
[0031] In some embodiments, the antenna structure 100 may further include an all-in-one antenna 3, which includes a satellite positioning antenna and a short-range communication antenna. Here, the satellite positioning antenna may cover the model frequency band of at least one of GPS (Global Positioning System), Beidou Satellite Positioning System, Galileo Satellite Positioning System and GLONASS, so as to realize the satellite positioning function through at least one of GPS / Beidou Satellite Positioning System / Galileo Satellite Positioning System / GLONASS. The short-range communication antenna may cover the short-range communication frequency band, so as to realize at least one short-range communication function such as WiFi / Bluetooth.
[0032] The operating frequency band of the satellite positioning antenna can be determined according to actual needs, subject to the ability to achieve the corresponding satellite positioning function, and the embodiments of the present application do not limit this. In some examples, the operating frequency band of the satellite positioning antenna can be 1100-1600MHz. Similarly, the operating frequency band of the short-range communication antenna can be determined according to actual needs, subject to the ability to achieve the corresponding short-range communication function, and the embodiments of the present application do not limit this. In some examples, the operating frequency band of the short-range communication antenna can be 2400-2500MHz and 5150-5850MHz.
[0033] In some examples, the all-in-one antenna 3 may include an all-in-one antenna line, a second feeding point 31 and a third feeding point 32, and the all-in-one antenna line is electrically connected to the second feeding point 31 and the third feeding point 32. Here, the all-in-one antenna line may include multiple radiators to cover different operating frequency bands.
[0034] The parasitic antenna 2 can be set separately as above, or it can be integrated into other functional antennas such as the all-in-one antenna 3. In some examples, the parasitic antenna 2 can be formed in the all-in-one antenna 3, and the isolation between the parasitic antenna 2 and the main antenna 1 is not less than -10dB. By setting as above, the parasitic radiation effect of the parasitic antenna 2 on the main antenna 1 in the first working frequency band can be guaranteed, and the parasitic antenna 2 does not need to be set separately, thereby improving the integration of the antenna structure 100.
[0035] like Figure 1 and Figure 2 As shown, on the other hand, an embodiment of the present application provides an electronic device, which includes a device housing 200 and an antenna structure 100 provided in any of the above embodiments, and the antenna structure 100 is arranged on the device housing 200. The type of electronic device can be determined according to actual needs, and can be a device type with communication functions such as a locator, a wearable device, a TWS (True Wireless Stereo) headset, etc., which is not limited in the embodiment of the present application.
[0036] The electronic device has the above-mentioned antenna structure 100. Even if the size of the electronic device is small, for example, as small as within 80 mm, since the low-frequency band performance of the main antenna 1 is better, the performance of the antenna structure 100 in the low-frequency band can still meet the design requirements, so that the electronic device can better realize the low-frequency band communication function.
[0037] The location of the antenna structure 100 on the device housing 200 can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, the main antenna trace can be set on the outer surface of the device housing 200, specifically on the top, left and right sides of the device housing 200; the parasitic antenna radiator can also be set on the outer surface of the device housing 200, specifically on the right and bottom sides of the device housing 200; the all-in-one antenna trace can also be set on the outer surface of the device housing 200, specifically on the left and bottom sides of the device housing 200. Of course, the main antenna trace, the parasitic antenna radiator and the all-in-one antenna trace can also be set at other locations on the device housing 200, and the embodiments of the present application do not limit this.
[0038] In some embodiments, the electronic device may further include a mainboard 300, which is disposed in the device housing 200. Here, the first feeding point 11, the first feeding point 12, the second feeding point 21, the second feeding point 31 and the third feeding point may be electrically connected to the mainboard 300, respectively.
[0039] The antenna structure and electronic device provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. An antenna structure, characterized in that: It includes a main antenna and a parasitic antenna that are correspondingly arranged, the main antenna has a first working frequency band and a second working frequency band, the first working frequency band is smaller than the second working frequency band; the working frequency band of the parasitic antenna is the same as the first working frequency band, and the polarization characteristics of the main antenna are opposite to the polarization characteristics of the parasitic antenna.
2. The antenna structure according to claim 1, characterized in that: One of the main antenna and the parasitic antenna is 45° polarized, and the other is -45° polarized.
3. The antenna structure according to claim 1, characterized in that: The first operating frequency band is 700-960 MHz, and the second operating frequency band is 1710-2690 MHz.
4. The antenna structure according to claim 1, characterized in that: The main antenna includes a main antenna wiring, a first feeding point and a first feeding point. The main antenna wiring is electrically connected to the first feeding point and the first feeding point respectively.
5. The antenna structure according to claim 1, characterized in that: The parasitic antenna includes a parasitic antenna radiator and a second feeding point which are electrically connected in sequence.
6. The antenna structure according to claim 1, characterized in that: The antenna structure further includes an all-in-one antenna, which includes a satellite positioning antenna and a short-range communication antenna.
7. The antenna structure according to claim 6, characterized in that: The operating frequency bands of the short-range communication antenna are 2400-2500 MHz and 5150-5850 MHz, and the operating frequency band of the satellite positioning antenna is 1100-1600 MHz.
8. The antenna structure according to claim 6, characterized in that: The parasitic antenna is formed in the all-in-one antenna, and the isolation between the parasitic antenna and the main antenna is not less than -10 dB.
9. The antenna structure according to claim 6, characterized in that: The all-in-one antenna includes an all-in-one antenna routing line, a second feeding point and a third feeding point, and the all-in-one antenna routing line is electrically connected to the second feeding point and the third feeding point respectively.
10. An electronic device, characterized in that: The invention comprises a device housing and the antenna structure according to any one of claims 1 to 9, wherein the antenna structure is arranged on the device housing.