Antenna structure and terminal equipment
By using the edge of the metal frame as the main radiator in the terminal device and exciting it with a feed point, combined with LC circuit and switching circuit adjustment, the problem of poor GPS antenna performance was solved, and efficient radiation and stable signal reception of GPS antenna were achieved.
Patent Information
- Application Number
- CN202520311190.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-02-25
AI Technical Summary
When GPS antennas and Wi-Fi 2.4GHz antennas are integrated in terminal devices, the performance of the GPS antenna is poor.
By using the left, right, and top edges of the metal frame as the main radiators, and combining them with the excitation of the first and second output feed points to generate an electromagnetic field, the second antenna is made into a parasitic antenna of the GPS antenna, thereby enhancing the radiation efficiency and performance of the GPS antenna. Furthermore, the resonance state is adjusted through LC circuits and switching circuits to optimize the antenna performance.
The signal reception efficiency, radiation efficiency, and directionality of the GPS antenna have been improved, the coverage area has been increased, and the signal stability and performance of the GPS antenna have been ensured.
Smart Images
Figure CN223978085U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of electronic communications, and more particularly to an antenna structure and terminal equipment. Background Technology
[0002] In terminal device design, to save space and reduce costs, multiple antennas are often integrated together to form a combined antenna design. For example, the GPS antenna and the Wi-Fi 2.4GHz antenna are jointly placed in the upper left or upper right corner of the terminal device. However, when the GPS antenna and the Wi-Fi 2.4GHz antenna are designed together in the upper left or upper right corner of the phone, the GPS antenna uses a 1 / 4 wavelength mode, resulting in poor performance. Utility Model Content
[0003] This disclosure provides an antenna structure and terminal device for enhancing GPS antenna performance.
[0004] In a first aspect, this disclosure provides an antenna structure including a metal frame, a first antenna, and a second antenna. The metal frame includes a left side, a right side, and a top side connected to the left side and the right side. The first antenna includes a first output feed point connected to the top side. The second antenna includes a second output feed point connected to the left side and / or the right side. The first antenna includes a GPS antenna.
[0005] The left, right, and top edges of the metal frame can serve as the main radiators of the first and second antennas, respectively. Electromagnetic fields are generated through the first and second output feed points, enabling signal radiation and reception. This configuration allows the second antenna, connected to the left and / or right edges, to function as a parasitic antenna for the GPS antenna, thereby increasing the radiation efficiency and performance of the GPS antenna.
[0006] Optionally, the GPS antenna is configured with a 1 / 2 wavelength.
[0007] Optionally, the end of the GPS antenna furthest from the first output feed point is grounded.
[0008] Optionally, the second output feed point includes a right-side second output feed point, which is located on the right side.
[0009] The antenna structure also includes an LC circuit, one end of which is connected to the second output feed point on the right, and the other end of which is connected to the input feed point.
[0010] Optionally, the second antenna includes an MHB antenna, one end of which is connected to the right-side second output feed point.
[0011] Optionally, it includes a first switching circuit, which is connected to the second antenna. When the first switching circuit switches to a first state, the first switching circuit and the second antenna form an LC resonance.
[0012] When the first switching circuit switches to the second state, the first switching circuit is disconnected from the second antenna.
[0013] Optionally, the second output feed point includes a left second output feed point, which is located on the left side; the second antenna includes a Wi-Fi antenna, which is connected to the left second output feed point; one end of the first switching circuit is connected to the left second output feed point, and the other end is connected to the Wi-Fi antenna.
[0014] Optionally, a second switching circuit is included, the second switching circuit includes an inductor group, and the second antenna includes a capacitor. When the second switching circuit switches to the third state, the second switching circuit and the second antenna are connected, and the second switch and the second antenna form a filter.
[0015] When the second switching circuit switches to the fourth state, the second switching circuit is disconnected from the second antenna.
[0016] Optionally, the second antenna includes an MHB antenna connected to the right-side second output feed point, and the MHB antenna includes a bypass capacitor; one end of the second switching circuit is connected to the right-side second output feed point, and the other end is connected to the bypass capacitor of the MHB antenna.
[0017] Secondly, this disclosure provides a terminal device, which includes the antenna structure described in the first aspect. Attached Figure Description
[0018] 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.
[0019] Figure 1 The diagram shown is a schematic representation of an embodiment of the antenna structure disclosed herein.
[0020] Explanation of reference numerals in the attached figures:
[0021] 100. Antenna structure; 110. Metal frame; 120. First antenna; 121. GPS antenna; 122. First output feed point; 130. Second antenna; 131. Wi-Fi antenna; 132. MHB antenna; 1321. Bypass capacitor; 133. Second output feed point; 134. Input feed point; 141. First switching circuit; 142. Second switching circuit; 1421. Inductor group. Detailed Implementation
[0022] The technical solutions in the embodiments (or "implementations") of this disclosure will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0023] If this disclosure uses terms relating to directional indications or positional relationships (e.g., up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, terms such as "first" and "second" in this disclosure are used only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0024] Figure 1 The diagram shown is a schematic representation of one embodiment of the antenna structure 100 disclosed herein. The dashed box represents a simplified schematic of the antenna portion.
[0025] See Figure 1 As shown, this disclosure provides an antenna structure 100, including a metal frame 110, a first antenna 120, and a second antenna 130. The metal frame 110 includes a left side 111, a right side 113, and a top side 112 connected to the left side 111 and the right side 113. The first antenna 120 includes a first output feed point 122 connected to the top side 112. The second antenna 130 includes a second output feed point 133 connected to the left side 111 and / or the right side 113. The first antenna 120 includes a GPS antenna 121.
[0026] The left side 111, right side 113, and top side 112 of the metal frame 110 can serve as the main radiators of the first antenna 120 and the second antenna 130, respectively. Electromagnetic fields are generated through the first output feed point 122 and the second output feed point 133, enabling signal radiation and reception. This arrangement allows the second antenna 130 to be positioned on both sides of the first antenna 120 and to function as a parasitic antenna for the GPS antenna 121, thereby increasing the radiation efficiency and performance of the GPS antenna 121.
[0027] In an optional embodiment, the GPS antenna 121 is configured to be half a wavelength. This configuration allows the GPS antenna 121 to reach a resonant state, which improves its signal reception efficiency, radiation efficiency, and directivity, increases its coverage area, and ensures stable reception.
[0028] In an optional embodiment, the end of the GPS antenna 121 furthest from the first output feed point 122 is grounded. This arrangement facilitates isolation between the GPS antenna 121 and the second antenna 130, reducing the impact on the performance of the GPS antenna 121 when the second antenna 130 undergoes various state changes. This improves the signal transmission efficiency and signal quality of the GPS antenna 121, ensuring signal stability.
[0029] In an optional embodiment, the second output feed point 133 includes a left second output feed point 133 and a right second output feed point 133. The left second output feed point 133 is located on the left side 111. The right second output feed point 133 is located on the right side 113. The antenna structure 100 also includes an LC circuit 150, one end of which is connected to the right second output feed point 133, and the other end of which is connected to the input feed point 134. Specifically, the LC circuit 150 operates in the 1.575 GHz band. This configuration effectively makes the LC circuit 150 open-circuited at its equivalent end. When the GPS antenna 121 is set to half a wavelength, the GPS antenna 121 synchronizes with the parasitic element of the second antenna 130, causing the first antenna 120 and the parasitic element to interact through electromagnetic coupling, thereby reducing the impact of the GPS antenna 121 on the second antenna 130 and reducing the mutual interference between the first antenna 120 and the second antenna 130.
[0030] In an optional embodiment, the second antenna 130 includes an MHB antenna 132, one end of which is connected to the right-side second output feed point 133.
[0031] The above configuration effectively opens the equivalent end of the LC circuit 150, facilitating isolation between the GPS antenna 121 and the second antenna 130. When the GPS antenna 121 is set to half wavelength, it synchronizes with the parasitic elements of the second antenna 130, allowing the first antenna 120 and the parasitic elements to interact through electromagnetic coupling, thereby reducing the impact of the GPS antenna 121 on the second antenna 130. This also reduces the impact on the performance of the GPS antenna 121 during various state changes in the MHB antenna 132, improving its signal transmission efficiency, enhancing its signal quality, and ensuring signal stability.
[0032] In an optional embodiment, the antenna structure 100 includes a first switching circuit 141. The first switching circuit 141 is connected to the second antenna 130. When the switching circuit switches to a first state, the first switching circuit 141 and the second antenna 130 form an LC resonance. When the switching circuit switches to a second state, the first switching circuit 141 is disconnected from the second antenna 130.
[0033] Specifically, the second antenna 130 includes a bypass capacitor 1321, which is electrically connected to the first switching circuit 141. By adjusting the total capacitance value of the parasitic capacitance in the antenna structure 100 and the turn-off capacitor Coff of the first switching circuit 141, the LC resonance between the first switching circuit 141 and the second antenna 130 is adjusted to approximately 1.6 GHz, thus serving as a parasitic element of the GPS antenna 121 and increasing the radiation efficiency and performance of the GPS antenna 121. Through the switching of the first switching circuit 141 between a first state and a second state, the antenna structure 100 can adjust its state according to real-time requirements, optimizing its overall performance and making it suitable for different applications.
[0034] In an optional embodiment, the second antenna 130 includes a Wi-Fi antenna 131 connected to a second output feed point 133 on the left side. One end of the first switching circuit 141 is connected to the second output feed point 133 on the left side, and the other end is connected to the Wi-Fi antenna 131.
[0035] Through the above configuration, the first switching circuit 141 can switch the operating frequency band of the Wi-Fi antenna 131. When the Wi-Fi antenna 131 needs to be used, the first switching circuit 141 is disconnected from the second antenna 130, allowing the Wi-Fi antenna 131 to be used independently. When the Wi-Fi antenna 131 is not needed, the first switching circuit 141 and the second antenna 130 form an LC resonance, making the first switching circuit 141 and the second antenna 130 act as parasitic elements of the GPS antenna 121, increasing the radiation efficiency and performance of the GPS antenna 121.
[0036] In an optional embodiment, the antenna structure 100 includes a second switching circuit 142. The second switching circuit 142 includes an inductor group 1421, and the second antenna 130 includes a capacitor. When the second switching circuit 142 switches to a third state, the second switching circuit 142 and the second antenna 130 are connected, forming a filter. When the second switching circuit 142 switches to a fourth state, the second switching circuit 142 and the second antenna 130 are disconnected.
[0037] Specifically, by setting the capacitor of the second switching circuit 142 so that when the capacitors of the second switching circuit 142 and the second antenna 130 are turned on, the second switch and the second antenna 130 form a filter.
[0038] With the above settings, when the second antenna 130 is needed, the second switching circuit 142 disconnects from the second antenna 130, allowing the second antenna 130 to be used independently. When the second antenna 130 is not needed, the second switching circuit 142 and the second antenna 130 form a filter, thereby reducing the performance of the second antenna 130 and reducing its impact on the GPS antenna 121. By switching between the third and fourth states of the second switching circuit 142, the antenna structure 100 can adjust its state according to real-time requirements, optimizing its overall performance and making it suitable for different applications.
[0039] In an optional embodiment, the second antenna 130 includes an MHB antenna 132. The MHB antenna 132 is connected to the right-side second output feed point 133 and includes a bypass capacitor 1321. One end of the second switching circuit 142 is connected to the right-side second output feed point 133, and the other end is connected to the bypass capacitor 1321 of the MHB antenna 132.
[0040] The above configuration enables the second switching circuit 142 to switch the operating frequency band of the MHB antenna 132. When the MHB antenna 132 is needed, the second switching circuit 142 is disconnected from the second antenna 130, allowing the MHB antenna 132 to be used independently. When the MHB antenna 132 is not needed, the inductor group 1421 of the second switching circuit 142 and the bypass capacitor 1321 of the second antenna 130 form a filter, thereby reducing the performance of the second antenna 130 and thus reducing the impact of the second antenna 130 on the GPS antenna 121.
[0041] In practical use, the capacitance value of the first switching circuit 141 and the inductance value of the inductor group 1421 of the second switching circuit 142 can be adjusted through simulation experiments or physical tests. This will allow the LC resonance between the first switching circuit 141 and the second antenna 130 (specifically, the WI-FI antenna 131) and the filter formed between the second switching circuit 142 and the second antenna 130 (specifically, the MHB antenna 132) to match the GPS antenna 121. This will maximize the signal reception efficiency, radiation efficiency, and directivity of the GPS antenna 121, and will also help increase the coverage of the GPS antenna 121, ensuring stable signal reception of the GPS antenna 121.
[0042] This disclosure also provides a terminal device, which includes an antenna structure 100. The terminal device can be a smartphone, tablet computer, etc., and a metal frame 110 can serve as the outer casing of the terminal device. The left side 111, right side 113, and top side 112 of the metal frame 110 of the antenna structure 100 can also serve as the main radiators of a first antenna 120 and a second antenna 130, respectively. Electromagnetic fields are generated through the first output feed point 122 and the second output feed point 133 to achieve signal radiation and reception. By setting the length of the second antenna 130, the second antenna 130 connected to the left side 111 and right side 113 can serve as a parasitic antenna for the GPS antenna 121, thereby increasing the radiation efficiency and performance of the GPS antenna 121.
[0043] It should be noted that the technical solutions or features described in the above embodiments can be combined or complemented by each other without conflict. The scope of protection of this disclosure is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.
Claims
1. An antenna structure, characterized by The antenna structure comprises a metal frame, a first antenna and a second antenna, the metal frame comprises a left side, a right side and a top side connected to the left side and the right side, the first antenna comprises a first output feed point, the first output feed point is connected to the top side, the second antenna comprises a second output feed point, the second output feed point is connected to the left side and / or the right side, wherein the first antenna comprises a GPS antenna.
2. The antenna structure of claim 1, wherein, The GPS antenna is arranged as a 1 / 2 wavelength.
3. The antenna structure of claim 1, wherein, The GPS antenna is grounded at an end away from the first output feed point.
4. The antenna structure of claim 1, wherein, The second output feed point comprises a right second output feed point, the right second output feed point is arranged on the right side, The antenna structure further comprises an LC circuit, one end of the LC circuit is connected to the right second output feed point, and the other end of the LC circuit is connected to an input feed point.
5. The antenna structure of claim 4, wherein, The second antenna comprises an MHB antenna, one end of the MHB antenna is connected to the right second output feed point.
6. The antenna structure of claim 4, wherein, The antenna structure comprises a first switch circuit, the first switch circuit is connected to the second antenna, when the first switch circuit is switched to a first state, the first switch circuit forms an LC resonance with the second antenna; When the first switch circuit is switched to a second state, the first switch circuit is disconnected from the second antenna.
7. The antenna structure of claim 6, wherein, The second output feed point comprises a left second output feed point, the left second output feed point is arranged on the left side, the second antenna comprises a WI-FI antenna, the WI-FI antenna is connected to the left second output feed point; one end of the first switch circuit is connected to the left second output feed point, and the other end of the first switch circuit is connected to the WI-FI antenna.
8. The antenna structure of claim 5, wherein, The antenna structure comprises a second switch circuit, the second switch circuit comprises an inductor group, the second antenna comprises a capacitor, when the second switch circuit is switched to a third state, the second switch circuit is connected to the second antenna, and the second switch circuit and the second antenna form a filter; When the second switch circuit is switched to a fourth state, the second switch circuit is disconnected from the second antenna.
9. The antenna structure of claim 8, wherein, The second antenna comprises an MHB antenna, the MHB antenna is connected to the right second output feed point, and the MHB antenna comprises a bypass capacitor; one end of the second switch circuit is connected to the right second output feed point, and the other end of the second switch circuit is connected to the bypass capacitor of the MHB antenna.
10. A terminal device, comprising: The terminal device comprises the antenna structure according to any one of claims 1-9.