Antenna structure and electronic equipment

Abstract

The invention relates to an antenna structure and electronic equipment. The antenna structure comprises a frame, the frame comprises a first antenna branch knot and a second antenna branch knot, the first tail end of the first antenna branch knot and the first tail end of the second antenna branch knot are matched to form a first breaking joint, and the first antenna branch knot is a satellite communication transceiving branch knot; the floor is arranged in the frame, an antenna clearance is formed between the floor and the first antenna branch knot and between the floor and the second antenna branch knot, and the antenna clearance is communicated with the first breaking joint; a first feed end, wherein the first feed end is electrically connected to the first antenna branch knot; and the ground returning structure is connected with one end, deviating from the second antenna branch knot, of the first antenna branch knot and the floor, the ground returning structure is located at the corner of the frame, and the first breaking joint and the second antenna branch knot are located at the top of the frame.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and in particular to an antenna structure and electronic device. Background Technology

[0002] With the growing popularity of outdoor adventure, some users hope that handheld devices can enable emergency communication in extreme scenarios without data networks, thereby improving the safety of their adventures.

[0003] In some related technologies, satellite communication antennas are configured in handheld terminals. However, the receiving and transmitting antennas of these satellite communication antennas are arranged in different antenna stubs of the handheld terminal, which squeezes the space of other data network communication antennas. Summary of the Invention

[0004] This disclosure provides an antenna structure and electronic device to address the shortcomings of related technologies.

[0005] According to a first aspect of the present disclosure, an antenna structure is provided, comprising:

[0006] The frame includes a first antenna stub and a second antenna stub, the first ends of the first antenna stub and the second antenna stub cooperate to form a first gap, and the first antenna stub is a satellite communication transceiver stub;

[0007] The floor is disposed within the frame, and an antenna clearance is formed between the floor and the first antenna stub and the second antenna stub, the antenna clearance being connected to the first gap;

[0008] The first feed terminal is electrically connected to the first antenna stub;

[0009] A grounding structure is provided, which connects the end of the first antenna stub away from the second antenna stub to the floor. The grounding structure is located at the corner of the frame, and the first gap and the second antenna stub are located at the top of the frame.

[0010] Optionally, the second antenna stub forms a second gap away from the second end of the first antenna stub, and the second antenna stub is suspended.

[0011] The antenna structure also includes a SAR sensor, which is electrically connected to the second antenna stub.

[0012] Optionally, the second antenna stub includes a first upper frame point;

[0013] The antenna structure further includes a first-stage matching capacitor, which is electrically connected to the first upper frame point and grounded; the stub between the first upper frame point and the first end is a parasitic stub of the first antenna stub.

[0014] Optionally, the resonant frequency of the parasitic branch is greater than the frequency of the target communication satellite.

[0015] Optionally, the second antenna stub further includes a second upper frame point, which is located between the first upper frame point and the first end.

[0016] The antenna structure also includes a tuning circuit electrically connected to the second upper frame point, and the tuning circuit is used to adjust the resonant frequency of the parasitic stub.

[0017] Optionally, the frame further includes a third antenna stub, one end of which is connected to the grounding structure and the other end is used to form a third gap;

[0018] When the first antenna stub operates in the satellite frequency band, the difference between the frequency of the third antenna stub and the frequency of the target communication satellite is less than or equal to a preset threshold.

[0019] Optionally, the frequency difference between the frequency of the third antenna stub and the frequency of the target communication satellite is less than or equal to 200MHz.

[0020] Optionally, it also includes a second power supply terminal, which is electrically connected to the first upper frame point, and the second power supply terminal is connected in parallel with the first stage matching capacitor.

[0021] Optionally, the second antenna stub further includes a third upper frame point, which is located between the first upper frame point and the second end.

[0022] It also includes a third power supply terminal, which is electrically connected to the third upper frame point. The electromagnetic wave signal fed into the third power supply terminal is radiated through the stub between the first upper frame point and the second end.

[0023] Optionally, the frame also includes a fourth antenna stub, and the antenna structure also includes a fourth feed terminal. The fourth antenna stub and the second end of the second antenna stub away from the first antenna stub cooperate to form a second gap. The end of the fourth antenna stub away from the second gap is grounded.

[0024] The fourth feed terminal is electrically connected to the fourth antenna stub.

[0025] Optionally, the first antenna stub may also be used to cover one or more mid-to-high frequency bands.

[0026] According to a second aspect of the present disclosure, an electronic device is provided, including an antenna structure as described in any of the above embodiments, wherein the outer surface of the frame forms a portion of the outer surface of the electronic device.

[0027] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0028] As can be seen from the above embodiments, this disclosure, on the one hand, sets the first antenna segment, which serves as a satellite communication transceiver segment, at the top. When the antenna structure is configured on a handheld terminal, it is beneficial to realize satellite communication in a normal holding posture. Moreover, the transmission and reception of satellite communication signals are realized through the same antenna segment, which is beneficial to make room for other conventional data communication antennas on the antenna structure.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0031] Figure 1 This is a schematic diagram illustrating an antenna structure according to an exemplary embodiment.

[0032] Figure 2 Based on Figure 1 Simulated current diagram of the antenna structure.

[0033] Figure 3 Based on Figure 1 Current distribution diagram of the antenna structure.

[0034] Figure 4 yes Figure 1 The simulation efficiency curve of the first antenna stub in the antenna structure.

[0035] Figure 5 yes Figure 1 The left-hand circular polarization pattern of the first antenna stub in the medium antenna structure.

[0036] Figure 6 yes Figure 1 The right-hand circular polarization pattern of the first antenna stub in the medium antenna structure. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0038] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0039] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0040] Figure 1 This is a schematic diagram illustrating an antenna structure according to an exemplary embodiment, such as... Figure 1 As shown, the antenna structure includes a frame 1, a ground plane 2, a first feed terminal 3, and a ground return structure 4. The frame 1 includes a first antenna stub 11 and a second antenna stub 12. The second antenna stub 12 includes a first end 121 and a second end 122. The first end 121 cooperates with the first antenna stub 11 to form a first gap 13. The first antenna stub 11 is a satellite communication transceiver stub; in other words, when this antenna structure communicates with a target communication satellite, it can transmit and receive antenna signals through the first antenna stub 11. The ground plane 2 is disposed within the frame 1, and an antenna clearance is formed between the ground plane 2 and the first antenna stub 11 and the second antenna stub 12. This antenna clearance communicates with the first gap 13. The first feed terminal 3 is electrically connected to the first antenna stub 11 to feed in and output antenna signals. The grounding structure 4 is connected to the end of the first antenna stub 11 that is away from the second antenna stub 12, and the grounding structure 4 is connected to the ground plane 2, thereby grounding the first antenna stub 11. The grounding structure 4 is located at the corner of the frame 1, and both the first gap 13 and the second antenna stub 12 are located at the top of the frame 1. For example, such as Figure 1As shown, taking the frame 1 as a rectangular structure as an example, the grounding structure 4 is located at the right top corner of the frame 1. The first antenna branch 11 can extend from the grounding structure 4 toward the second antenna branch 12. The second antenna branch 12 and the first gap 13 are both located at the top of the frame 1. Since the first antenna branch 11 extends toward the second antenna branch 12, at least a part of the first antenna branch 11 is located at the top of the frame 1.

[0041] Based on this, on the one hand, placing the first antenna segment 11, which serves as a satellite communication transceiver segment, at the top facilitates satellite communication in a conventional holding posture when the antenna structure is configured on a handheld terminal. Furthermore, transmitting and receiving satellite communication signals through the same antenna segment frees up space for other conventional data communication antennas on the antenna structure. On the other hand, the first antenna segment 11 returns to ground via the grounding structure 4 located at the corner, such as… Figure 2 As shown, when the first antenna stub 11 is in communication mode, the current strong point of the first antenna stub 11 is located at the ground return end, that is, near the corner of the frame 1. Figure 2 (As shown by the arrow on the right), while the second line branch 12 is located at the top of border 1 ( Figure 2 As shown by the arrow on the left, the strong current point of the second antenna stub 12 is also located at the top of the frame 1, thus avoiding the strong current point of the first antenna stub 11, reducing the mutual influence between the two, and improving the radiation performance of the excited part of the first antenna stub 11. The first antenna stub 11 can also be used to cover one or more mid-to-high frequency bands. In this embodiment, the grounding structure 4 is described as a grounding rib connected to the floor. In other embodiments, the grounding structure 4 can also be a grounding circuit, designed as needed.

[0042] The second end of the second antenna stub 12 can be used to form the second gap 14. The second antenna stub 12 is suspended, meaning it is not grounded through the grounding structure 4. The antenna structure also includes a SAR sensor 5, which is electrically connected to the second antenna stub 12. This enables SAR detection of the antenna structure and reduces the impact of antenna radiation on the user. In this example, due to the suspended configuration of the second antenna stub 12, SAR adjustment can be achieved through real-time detection by the SAR sensor 5. Compared to related technologies where the antenna stubs at the top of the frame 1 are grounded through grounding ribs, making it impossible to install the SAR sensor 5 for real-time detection, this improves the intelligence of SAR adjustment.

[0043] In some examples, the second antenna stub 12 also includes a first upper frame point, and the antenna structure also includes a first-stage matching capacitor 6, which is electrically connected to the first upper frame point and grounded. This grounding of the first-stage matching capacitor 6 achieves grounding of the stub between the first upper frame point and the first end point, without affecting the SAR sensor 5. Furthermore, to increase the coverage frequency band of the antenna structure, the antenna structure may also include a second feed terminal 7, which is electrically connected to the first upper frame point and connected in parallel with the first-stage matching capacitor 6. This allows the signal from the second antenna stub 12 to be fed through the second feed terminal 7, exciting the second antenna stub 12 to resonate and improving the frequency band coverage of the antenna structure. Of course, other matching elements can be placed between the second feed terminal 7 and the first upper frame point to achieve signal matching, but these other matching elements are all second-stage or third-stage matching devices located after the first-stage matching capacitor 6. For example, the second feed terminal 7 can feed an L5 band signal.

[0044] The area between the first upper frame point and the first end stub can serve as a parasitic stub of the first antenna stub 11, coupling with the parasitic stub when the first antenna stub 11 is in communication mode, such as... Figure 3 As shown, Figure 3 The diagram shows the efficiency curve of the parasitic branch after its addition. Taking the target communication satellite as an example (BeiDou satellite), TX is located at 1610MHz~1626.5MHz, and RX is located at 2483.5MHz~2500MHz. (See [link]). Figure 3 As can be seen, through the coupling between the parasitic stub and the first antenna stub 11, current is distributed on the parasitic stub; see [link to previous text]. Figure 4 The radiation efficiency curves of the first antenna stub 11 are shown. Curve S1 is the radiation efficiency curve of the first antenna stub 11, and curve S2 is the overall efficiency curve of the first antenna stub 11. Referring to curves S1 and S2, due to the effect of the parasitic stub, [the following text is incomplete and requires further context to translate accurately]. Figure 4 The inefficient pits indicated by the middle arrows were moved out of the TX and RX bands of the Beidou satellite, while efficiency bumps were generated near 1600MHz and near 2500MHz, so that the first antenna stub 11 has good radiation efficiency near both 1600MHz and 2500MHz.

[0045] It is understandable that when the first antenna stub 11 serves as a satellite communication transceiver stub, the requirements for its circular polarization direction differ depending on whether the stub is in signal receiving or signal transmitting mode, based on the needs of the target communication satellite. For example, taking the target communication satellite as a BeiDou satellite, when the stub is in signal receiving mode, BeiDou satellites require better right-hand circular polarization gain for the first antenna stub 11, while in signal transmitting mode, BeiDou satellites require better left-hand circular polarization gain for the first antenna stub 11. Furthermore, it is understandable that from a user experience perspective, it is necessary to achieve satellite alignment in both signal receiving and signal transmitting modes at the same angle. This requires that there be a good performance overlap between the left-hand and right-hand circular polarization patterns of the first antenna stub 11 in the direction facing the target communication satellite.

[0046] In some instances, to achieve overlap between left-hand and right-hand circularly polarized radiation patterns, the resonant frequency of the parasitic stub can be higher than the frequency of the target communication satellite. This increases the overlap area between the left-hand and right-hand circularly polarized radiation patterns, thereby improving the user experience. The second antenna stub 12 may include a second upper frame point located between the first upper frame point and the first end. The antenna structure also includes a tuning circuit 8 electrically connected to the second upper frame point. This tuning circuit 8 can adjust the resonant frequency of the parasitic stub to be higher than the resonant frequency of the target communication satellite.

[0047] In other examples, the overlap region between the left-hand circular polarization pattern and the right-hand circular polarization pattern can be adjusted by setting a perturbation unit. For example, the frame 1 may also include a third antenna stub 15, one end of which is connected to the grounding structure 4, and the other end is used to form a third gap 16. When the first antenna stub 11 is operating in the satellite frequency band, the difference between the frequency of the third antenna stub 15 and the frequency of the target communication satellite can be less than or equal to a preset threshold, such as 200MHz. The frequency of the third antenna stub 15 can be switched by a corresponding tuning switch.

[0048] Taking the simultaneous configuration of parasitic stubs and third antenna stub 15 as an example, such as Figure 5 and Figure 6 As shown, taking an antenna structure configured on an electronic device, with the first antenna stub 11 located at the top of the electronic device as an example, the thickness direction of the electronic device is the X-axis direction, the width direction is the Y-axis direction, and the length direction is the Z-axis direction. Based on this coordinate system, the following is obtained: Figure 5 The left-hand circular polarization pattern shown, and Figure 6 The diagram shows a right-handed circularly polarized pattern. See also... Figure 5 and Figure 6 It can be seen that both the left-handed and right-handed circular polarization directions are partially oriented towards the zenith, and there is a certain overlap between the two in the zenith direction.

[0049] In some embodiments, the first top frame point may be located at the second end of the second antenna stub 12. In other embodiments, the second antenna stub 12 further includes a third top frame point located between the first top frame point and the second antenna stub 12. The antenna structure also includes a third feed terminal 9 electrically connected to the third top frame point. The electromagnetic wave signal fed into the third feed terminal 9 radiates through the stub between the first top frame point and the second end, thereby improving the compactness of the radiating stubs of the antenna structure and increasing the radiation frequency band of the antenna structure. For example, the third feed terminal 9 can feed N78 band signals and Wi-Fi 5G band signals.

[0050] In some instances, the frame 1 may further include a fourth antenna stub 17, which mates with the second end of the second antenna stub 12 to form a second gap 14. One end of the fourth antenna stub 17 facing away from the second gap 14 is grounded. The antenna structure also includes a fourth feed terminal 10 electrically connected to the fourth antenna stub 17, allowing signals fed through the fourth feed terminal 10 to be radiated through the fourth antenna stub 17, further increasing the coverage frequency band of the antenna structure. For example, the fourth feed terminal 10 can be used to feed L1 band signals and Wi-Fi 2.4G band signals.

[0051] Based on the technical solution of this disclosure, an electronic device is also provided, which may include the antenna structure described in any of the foregoing embodiments, and the outer surface of the frame 1 forms part of the outer surface of the electronic device, and the floor 2 is disposed inside the electronic device.

[0052] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0053] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An antenna structure, characterized in that, include: The frame includes a first antenna stub and a second antenna stub, the first ends of the first antenna stub and the second antenna stub cooperate to form a first gap, and the first antenna stub is a satellite communication transceiver stub; The floor is disposed within the frame, and an antenna clearance is formed between the floor and the first antenna stub and the second antenna stub, the antenna clearance being connected to the first gap; The first feed terminal is electrically connected to the first antenna stub; A grounding structure is provided, which connects the end of the first antenna stub away from the second antenna stub to the floor. The grounding structure is located at the corner of the frame, and the first gap and the second antenna stub are located at the top of the frame.

2. The antenna structure according to claim 1, characterized in that, The second antenna stub forms a second gap away from the second end of the first antenna stub, and the second antenna stub is suspended. The antenna structure also includes a SAR sensor, which is electrically connected to the second antenna stub.

3. The antenna structure according to claim 2, characterized in that, The second antenna stub includes the first upper frame point; The antenna structure further includes a first-stage matching capacitor, which is electrically connected to the first upper frame point and grounded; the stub between the first upper frame point and the first end is a parasitic stub of the first antenna stub.

4. The antenna structure according to claim 3, characterized in that, The resonant frequency of the parasitic branch is greater than the frequency of the target communication satellite.

5. The antenna structure according to claim 4, characterized in that, The second antenna stub also includes a second upper frame point, which is located between the first upper frame point and the first end. The antenna structure also includes a tuning circuit electrically connected to the second upper frame point, and the tuning circuit is used to adjust the resonant frequency of the parasitic stub.

6. The antenna structure according to claim 4, characterized in that, The frame also includes a third antenna stub, one end of which is connected to the grounding structure and the other end is used to form a third gap. When the first antenna stub operates in the satellite frequency band, the difference between the frequency of the third antenna stub and the frequency of the target communication satellite is less than or equal to a preset threshold.

7. The antenna structure according to claim 6, characterized in that, The frequency difference between the frequency of the third antenna stub and the frequency of the target communication satellite is less than or equal to 200MHz.

8. The antenna structure according to claim 3, characterized in that, It also includes a second power supply terminal, which is electrically connected to the first upper frame point, and the second power supply terminal is connected in parallel with the first stage matching capacitor.

9. The antenna structure according to claim 3, characterized in that, The second antenna stub also includes a third upper frame point, which is located between the first upper frame point and the second end. It also includes a third power supply terminal, which is electrically connected to the third upper frame point. The electromagnetic wave signal fed into the third power supply terminal is radiated through the stub between the first upper frame point and the second end.

10. The antenna structure according to claim 1, characterized in that, The frame also includes a fourth antenna branch, and the antenna structure also includes a fourth feed terminal. The fourth antenna branch and the second end of the second antenna branch away from the first antenna branch cooperate to form a second gap. The end of the fourth antenna branch away from the second gap is grounded. The fourth feed terminal is electrically connected to the fourth antenna stub.

11. The antenna structure according to claim 1, characterized in that, The first antenna stub is also used to cover one or more mid-to-high frequency bands.

12. An electronic device, characterized in that, The antenna structure includes any one of claims 1-11, wherein the outer surface of the frame forms part of the outer surface of the electronic device.

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