Antenna and electronic equipment
By setting frequency-matched radiators and isolators in the antenna module, and adjusting the current direction and radiation field frequency, the interference problem between antenna modules on the PCB board is solved, improving isolation and performance.
Patent Information
- Application Number
- CN202423198636.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The two antenna modules on the PCB are too close together, causing mutual interference and failing to meet the isolation requirements, thus affecting the performance.
The antenna module is equipped with radiators and isolators with different transmit and receive frequencies. The current travel length of the isolator is matched with the frequency of the radiator, and the isolation is improved by adjusting the current direction and the frequency of the radiation field.
This effectively reduces co-channel interference between antenna modules, improves isolation, and ensures the antenna's performance.
Smart Images
Figure CN223713065U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of antenna technology, specifically relating to an antenna and electronic device. Background Technology
[0002] An antenna is a device used to transmit or receive radio waves. It can transform guided waves propagating on a transmission line into electromagnetic waves propagating in free space, or vice versa.
[0003] A PCB onboard antenna is an antenna directly fabricated on a printed circuit board, utilizing the conductive patterns on the PCB to achieve its antenna function. PCB antennas have a wide range of applications, including wireless local area networks (WLAN), Bluetooth, GPS, RFID, smartphones, tablets, and other portable devices requiring wireless communication. For laptops, PCB onboard antennas are typically mounted at the hinge. When two antenna modules operating at different frequencies are placed on the PCB, their relatively close proximity can cause mutual interference and insufficient isolation, affecting performance.
[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide an antenna and electronic device. Utility Model Content
[0005] The purpose of this invention is to provide an antenna and electronic device that can solve the problem that the distance between two antenna modules on the PCB board is relatively close, causing them to interfere with each other and failing to meet the isolation requirements.
[0006] To achieve the above objectives, a specific embodiment of this utility model provides an antenna, the technical solution of which is as follows:
[0007] An antenna includes a circuit board, a first antenna module and a second antenna module with different transmit and receive frequencies disposed on the circuit board, the first antenna module including a first radiator and a first isolator arranged at intervals, the second antenna module including a second radiator and a second isolator arranged at intervals, the first isolator and the second isolator being disposed facing each other, and the first isolator and the second isolator being disposed between the first radiator and the second radiator.
[0008] The current travel length of the first isolator is matched with the frequency of the first radiator transmitting and receiving signals, the current travel length of the second isolator is matched with the frequency of the second radiator transmitting and receiving signals, and the current travel length is inversely proportional to the frequency.
[0009] In one or more embodiments of the utility model, the current row length in the first isolator is 1 / 4 of the wavelength corresponding to the first radiator transceiving frequency, and the current row length in the second isolator is 1 / 4 of the wavelength corresponding to the second radiator transceiving frequency.
[0010] In one or more embodiments of the utility model, the distance of the first isolator in the circuit board width direction is greater than or equal to the distance of the first radiator in the circuit board width direction, and the distance of the second isolator in the circuit board width direction is greater than or equal to the distance of the second radiator in the circuit board width direction.
[0011] In one or more embodiments of the utility model, the minimum distance between the first isolator and the second isolator is greater than or equal to a preset distance, the preset distance is the maximum value of 1 / 2 of the wavelength corresponding to the first radiator transceiving frequency and the wavelength corresponding to the second radiator transceiving frequency respectively, and / or,
[0012] The distance between the first radiator and the first isolator ranges from 1 / 2 to 1 / 4 of the wavelength corresponding to the first radiator transceiving frequency, and the distance between the second radiator and the second isolator ranges from 1 / 2 to 1 / 4 of the wavelength corresponding to the second radiator transceiving frequency.
[0013] In one or more embodiments of the utility model, the first antenna module further comprises a first ground body, and the first radiator and the first isolator are electrically connected to the first ground body respectively.
[0014] The second antenna module further comprises a second ground body, and the second radiator and the second isolator are electrically connected to the second ground body respectively.
[0015] In one or more embodiments of the utility model, the first isolator comprises a first isolation part electrically connected to the first ground body, and a second isolation part connected to one end of the first isolation part away from the first ground body, and an included angle exists between the extension directions of the first isolation part and the second isolation part, and / or,
[0016] The second isolator comprises a third isolation part electrically connected to the second ground body, and a fourth isolation part connected to one end of the third isolation part away from the second ground body, and the width of the third isolation part is less than the width of the fourth isolation part.
[0017] In one or more embodiments of the utility model, the first radiator is provided with a first feed point, the second radiator is provided with a second feed point, and the first isolator and the second isolator are located between the first feed point and the second feed point.
[0018] In one or more embodiments of the utility model, the first ground body and the second isolation body are located at the edge area of the circuit board, the first radiator and the first isolation body are located at the same side of the first ground body, and the second radiator and the second isolation body are located at the same side of the second ground body.
[0019] In one or more embodiments of the utility model, the first radiator, the second radiator, the first isolation body and the second isolation body are copper clad layers.
[0020] And / or, the first ground body and the second ground body are copper foil layers.
[0021] The utility model provides an electronic equipment in a specific embodiment, and the technical scheme is as follows:
[0022] An electronic equipment comprises the above antenna.
[0023] Compared with the prior art, the antenna of the utility model can adjust the current direction and the radiation field frequency by setting the radiator and the isolation body corresponding to the radiation body transmitting frequency in the antenna module, improve the isolation degree between the first antenna module and the second antenna module, reduce the same frequency interference, and guarantee the use effect of the antenna. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments in the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.
[0025] Figure 1 It is the partial structure plan view of the antenna in an embodiment of the utility model;
[0026] Figure 2 It is the schematic view of the circuit board and the first antenna module in an embodiment of the utility model;
[0027] Figure 3 It is the schematic view of the circuit board and the second antenna module in an embodiment of the utility model;
[0028] Figure 4 It is the isolation degree test data graph of the antenna in an embodiment of the utility model;
[0029] Figure 5 It is the isolation degree test data graph of the conventional antenna;
[0030] Figure 6 It is the resonance test data graph of the antenna in an embodiment of the utility model.
[0031] Explanation of reference numerals:
[0032] 1, circuit board; 2, first antenna module; 21, first radiator; 211, first feed point; 22, first isolation body; 221, first isolation part; 222, second isolation part; 23, first ground body; 3, second antenna module; 31, second radiator; 311, second feed point; 32, second isolation body; 321, third isolation part; 322, fourth isolation part; 33, second ground body. DETAILED DESCRIPTION
[0033] In order to make the technical personnel in the technical field better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.
[0034] With reference to Figure 1 In an embodiment of the present application, an antenna is provided, which comprises a circuit board 1, a first antenna module 2 and a second antenna module 3 with different receiving and transmitting frequencies arranged on the circuit board 1, the first antenna module 2 comprising first radiators 21 and first isolation bodies 22 arranged at intervals, the second antenna module 3 comprising second radiators 31 and second isolation bodies 32 arranged at intervals, the first isolation bodies 22 and the second isolation bodies 32 being arranged opposite to each other and between the first radiators 21 and the second radiators 31; the current flow length of the first isolation bodies 22 matches the frequency of the signal received and transmitted by the first radiators 21, the current flow length of the second isolation bodies 32 matches the frequency of the signal received and transmitted by the second radiators 31, and the current flow length is inversely proportional to the frequency. In the embodiment, the first antenna module 2 and the second antenna module 3 are arranged along the length direction of the circuit board 1 (i.e. the X-axis direction in the figure). Figure 1
[0035] Therefore, when the frequency of the signal received and transmitted by the first antenna module 2 is less than the frequency of the signal received and transmitted by the second antenna module 3, the current flow length of the first isolation bodies 22 is greater than the current flow length of the second isolation bodies 32; on the contrary, when the frequency of the signal received and transmitted by the first antenna module 2 is greater than the frequency of the signal received and transmitted by the second antenna module 3, the current flow length of the first isolation bodies 22 is less than the current flow length of the second isolation bodies 32.
[0036] With reference to Figure 1 The first antenna module 2 further comprises a first grounding body 23, and the first radiator 21 and the first isolation body 22 are electrically connected to the first grounding body 23 respectively. The second antenna module 3 further comprises a second grounding body 33, and the second radiator 31 and the second isolation body 32 are electrically connected to the second grounding body 33 respectively. The first radiator 21, the second radiator 31, the first isolation body 22 and the second isolation body 32 are copper clad layers, and the first grounding body 23 and the second grounding body 33 are copper foil layers.
[0037] Therefore, the above structure can make the first radiator 21 and the first isolation body 22 be grounded, and the second radiator 31 and the second isolation body 32 be grounded, so that the current direction and the radiation field frequency in the first antenna module 2 and the second antenna module 3 can be adjusted, the isolation degree between the first antenna module 2 and the second antenna module 3 can be improved, and the use effect of the antenna can be ensured.
[0038] With reference to Figure 1 In the embodiment, the current passing length in the first isolation body 22 is 1 / 4 of the wavelength corresponding to the frequency of the first radiator 21, and the current passing length in the second isolation body 32 is 1 / 4 of the wavelength corresponding to the frequency of the second radiator 31. The current passing length refers to the length of the path of the current in the corresponding isolation body. By reasonably setting the current passing length of the first isolation body 22 and the second isolation body 32, the isolation effect between the first antenna module 2 and the second antenna module 3 can be ensured.
[0039] With reference to Figure 2 Specifically, the first isolation body 22 comprises a first isolation part 221 electrically connected to the first grounding body 23, and a second isolation part 222 connected to the end of the first isolation part 221 away from the first grounding body 23, and an included angle exists between the extension directions of the first isolation part 221 and the second isolation part 222. In the embodiment, the included angle between the first isolation part 221 and the second isolation part 222 is an obtuse angle, the extension direction of the second isolation part 222 is consistent with the extension direction of the circuit board 1, and the end of the second isolation part 222 away from the first isolation part 221 is away from the first radiator 21.
[0040] With reference to Figure 3 The second isolation body 32 comprises a third isolation part 321 electrically connected to the second grounding body 33, and a fourth isolation part 322 connected to the end of the third isolation part 321 away from the second grounding body 33, and the width of the third isolation part 321 is smaller than the width of the fourth isolation part 322. The sizes of the first isolation part 221 and the second isolation part 222 can be determined according to the required current passing length in the first isolation body 22, and the sizes of the third isolation part 321 and the fourth isolation part 322 can be determined according to the required current passing length in the second isolation body 32.
[0041] With reference to Figure 1The first isolator 22 is in the width direction of the circuit board 1 ( Figure 1 The distance (in the Y-axis direction) of the first radiator 21 in the width direction of the circuit board 1 is greater than or equal to the distance of the second isolator 32 in the width direction of the circuit board 1. In this embodiment, the distance of the first isolator 22 in the width direction of the circuit board 1 is equal to the distance of the first radiator 21 in the width direction of the circuit board 1; the distance of the second isolator 32 in the width direction of the circuit board 1 is equal to the distance of the second radiator 31 in the width direction of the circuit board 1, and the first radiator 21, the first isolator 22, the second radiator 31, and the second isolator 32 are all the same width as the circuit board 1 in the width direction of the circuit board 1.
[0042] Reference Figure 2 and Figure 3 The first radiator 21 is provided with a first feed point 211, the second radiator 31 is provided with a second feed point 311, and the first isolator 22 and the second isolator 32 are both located between the first feed point 211 and the second feed point 311. The first radiator 21 transmits and receives signals through the first feed point 211; the second radiator 31 transmits and receives signals through the second feed point 311.
[0043] Reference Figure 1 To further ensure the isolation effect between the first antenna module 2 and the second antenna module 3, in an optional embodiment, the minimum distance between the first isolator 22 and the second isolator 32 is greater than or equal to a preset distance. The preset distance is the maximum value among half of the wavelengths corresponding to the transmission and reception frequencies of the first radiator 21 and the second radiator 31. For example, the wavelength corresponding to the transmission and reception frequency of the first radiator 21 is a, and the wavelength corresponding to the transmission and reception frequency of the second radiator 31 is b. If a / 2 is greater than b / 2, then the preset distance is a / 2; conversely, if a / 2 is less than b / 2, then the preset distance is b / 2.
[0044] The spacing between the first radiator 21 and the first isolator 22 ranges from 1 / 2 to 1 / 4 of the wavelength corresponding to the transmit / receive frequency of the first radiator 21; the spacing between the second radiator 31 and the second isolator 32 ranges from 1 / 2 to 1 / 4 of the wavelength corresponding to the transmit / receive frequency of the second radiator 31. In this embodiment, the spacing between the first radiator 21 and the first isolator 22 is 1 / 3 of the wavelength corresponding to the transmit / receive frequency of the first radiator 21. The spacing between the second radiator 31 and the second isolator 32 is 1 / 3 of the wavelength corresponding to the transmit / receive frequency of the second radiator 31. In other embodiments, the above spacing may also be the endpoint value of the above range or adjusted within the above range.
[0045] Reference Figure 1In an optional embodiment, the first ground body 23 and the second isolation body 32 are located at the edge region of the circuit board 1, the first radiating body 21 and the first isolation body 22 are located at the same side of the first ground body 23, and the second radiating body 31 and the second isolation body 32 are located at the same side of the second ground body 33.
[0046] With reference to Figure 1 The antenna of the embodiment further comprises a solder resist layer (also referred to as an ink layer) arranged on the circuit board 1, for protecting the first radiating body 21, the first isolation body 22, the second radiating body 31, and the second isolation body 32, etc. Further, the antenna of the embodiment further comprises coaxial wires connected with the first antenna module 2 and the second antenna module 3 respectively, so that the antenna of the embodiment can be connected with an electronic device.
[0047] In the embodiment, taking the example that the first antenna module 2 transmits and receives signals of the 2.4G frequency band and the second antenna module 3 transmits and receives signals of the 5.85G frequency band, the sizes and shapes of the structures of the antenna in the embodiment are designed according to the above-mentioned manner. In the above-mentioned specific embodiment, the 2.4G frequency band can be understood as 2.4GHz-2.5GHz, and the 5.85G frequency band can be understood as 5.15GHz-5.85GHz. That is, in the embodiment, the first isolation body 22 can improve the isolation degree between the first antenna module 2 and the second antenna module 3 at the 2.4G frequency band, and the second isolation body 32 can improve the isolation degree between the first antenna module 2 and the second antenna module 3 at the 5.85G frequency band.
[0048] The isolation degree test of the antenna in the embodiment and a conventional antenna is shown in Figure 4 and Figure 5 and Table 1 below. In the above-mentioned conventional antenna, no structure for improving the isolation degree such as the first isolation body 22 and the second isolation body 32 is arranged. Generally, the greater the absolute value of the data, the better the isolation effect between different antenna modules. Therefore, by comparing Figure 4 and Figure 5 it can be concluded that the isolation effect of the antenna in the embodiment is better than that of the conventional antenna. According to Table 1 below, the isolation degree of the antenna of the embodiment is improved by 2.5dB at 2.4G and 31.4dB at 5.85G compared with the conventional antenna.
[0049]
[0050] Under the premise of ensuring the isolation degree, by comparing Figure 6 it can be seen that the antenna in the embodiment also has a good resonance effect at the 2.4G frequency band and the 5.85G frequency band, and can stably transmit and receive signals within the 2.4G frequency band and the 5.8G frequency band.
[0051] With reference to Figure 1The electronic device provided in the embodiment of the utility model still provides an electronic device, including the above-mentioned antenna, it can be understood that the electronic device provided with the above-mentioned antenna can receive and transmit signals of different frequency bands through the antenna, and the isolation effect between different signals can be effectively guaranteed, and the mutual interference possibly existing can be reduced.
[0052] In the embodiments of the present specification, the electronic device can include, but is not limited to, a notebook computer, a personal computer, a server computer, a workstation, a desktop computer, a laptop computer, a mobile electronic device, a smart phone, a tablet computer, a cellular phone, a personal digital assistant (PDA), a handheld device, a messaging device, a wearable electronic device, a consumer electronic device, and the like.
[0053] It is apparent for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0054] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.
Claims
1. An antenna, characterized by The application relates to an antenna module, which comprises a circuit board (1), a first antenna module (2) and a second antenna module (3) with different receiving and transmitting frequencies arranged on the circuit board (1), the first antenna module (2) comprises first radiators (21) and first isolation bodies (22) arranged at intervals, the second antenna module (3) comprises second radiators (31) and second isolation bodies (32) arranged at intervals, the first isolation bodies (22) and the second isolation bodies (32) are arranged oppositely, and the first isolation bodies (22) and the second isolation bodies (32) are arranged between the first radiators (21) and the second radiators (31). The current flow length of the first isolation body (22) matches the frequency of the signal received and transmitted by the first radiator (21), the current flow length of the second isolation body (32) matches the frequency of the signal received and transmitted by the second radiator (31), and the current flow length is inversely proportional to the frequency.
2. The antenna according to claim 1, characterized in that, The current flow length in the first isolation body (22) is 1 / 4 of the wavelength corresponding to the receiving and transmitting frequency of the first radiator (21); the current flow length in the second isolation body (32) is 1 / 4 of the wavelength corresponding to the receiving and transmitting frequency of the second radiator (31).
3. The antenna according to claim 1, wherein, The distance of the first isolation body (22) in the width direction of the circuit board (1) is greater than or equal to the distance of the first radiator (21) in the width direction of the circuit board (1); the distance of the second isolation body (32) in the width direction of the circuit board (1) is greater than or equal to the distance of the second radiator (31) in the width direction of the circuit board (1).
4. The antenna according to claim 1, wherein, The minimum distance between the first isolation body (22) and the second isolation body (32) is greater than or equal to a preset distance, the preset distance is the maximum value of 1 / 2 of the wavelength corresponding to the receiving and transmitting frequency of the first radiator (21) and the receiving and transmitting frequency of the second radiator (31) respectively; and / or, The distance range between the first radiator (21) and the first isolation body (22) is 1 / 2-1 / 4 of the wavelength corresponding to the receiving and transmitting frequency of the first radiator (21); the distance range between the second radiator (31) and the second isolation body (32) is 1 / 2-1 / 4 of the wavelength corresponding to the receiving and transmitting frequency of the second radiator (31).
5. The antenna according to claim 1, wherein, The first antenna module (2) further comprises a first grounding body (23), and the first radiator (21) and the first isolation body (22) are electrically connected to the first grounding body (23) respectively. The second antenna module (3) further comprises a second grounding body (33), and the second radiator (31) and the second isolation body (32) are electrically connected to the second grounding body (33) respectively.
6. The antenna according to claim 5, characterized in that, The first isolation body (22) comprises a first isolation part (221) electrically connected to the first grounding body (23) and a second isolation part (222) connected to one end of the first isolation part (221) away from the first grounding body (23), and an included angle exists between the extension directions of the first isolation part (221) and the second isolation part (222); and / or, The second isolation body (32) comprises a third isolation part (321) electrically connected with the second ground body (33), and a fourth isolation part (322) connected to one end of the third isolation part (321) away from the second ground body (33), wherein the width of the third isolation part (321) is smaller than the width of the fourth isolation part (322).
7. The antenna according to claim 5, wherein, The first radiating body (21) is provided with a first feed point (211), the second radiating body (31) is provided with a second feed point (311), and the first isolation body (22) and the second isolation body (32) are located between the first feed point (211) and the second feed point (311).
8. The antenna according to claim 5, wherein, The first ground body (23) and the second isolation body (32) are located in the edge area of the circuit board (1), the first radiating body (21) and the first isolation body (22) are located on the same side of the first ground body (23), and the second radiating body (31) and the second isolation body (32) are located on the same side of the second ground body (33).
9. The antenna according to claim 5, wherein, The first radiating body (21), the second radiating body (31), the first isolation body (22), and the second isolation body (32) are copper clad layers. The first ground body (23) and the second ground body (33) are copper foil layers.
10. An electronic device, comprising: An antenna comprising any one of claims 1-9. An antenna comprising any one of claims 1-9.