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US-20260128502-A1 - ELECTRONIC DEVICE

US20260128502A1US 20260128502 A1US20260128502 A1US 20260128502A1US-20260128502-A1

Abstract

An electronic device is provided and includes a first antenna and a second antenna; the first antenna is a near field communication antenna disposed above a pressure plate bracket of the electronic device, and is disposed adjacent to the second antenna; a radiator of the first antenna is connected to an anti-interference circuit, and a connection point between the radiator and the anti-interference circuit is located at a location on the radiator of the first antenna other than a feed point of the first antenna and a ground point of the first antenna; the anti-interference circuit is configured to reduce interference between the first antenna and the second antenna.

Inventors

  • Tao Zhang
  • En Wu

Assignees

  • Realme Mobile Telecommunications (Shenzhen) Co., Ltd.

Dates

Publication Date
20260507
Application Date
20251230
Priority Date
20231114

Claims (20)

  1. 1 . An electronic device, comprising a first antenna and a second antenna; wherein the first antenna is a near field communication antenna disposed above a pressure plate bracket of the electronic device, and is disposed adjacent to the second antenna; an anti-interference circuit is connected to a radiator of the first antenna, and a connection point between the radiator and the anti-interference circuit is located at a location other than a feed point of the first antenna and a ground point of the first antenna on the radiator of the first antenna; the anti-interference circuit is configured to reduce interference between the first antenna and the second antenna.
  2. 2 . The electronic device as claimed in claim 1 , wherein the anti-interference circuit comprises a grounding circuit; the grounding circuit is connected to the radiator of the first antenna.
  3. 3 . The electronic device as claimed in claim 2 , wherein the grounding circuit is grounded through an antenna spring piece, a foam, an exposed copper, or a screw hole.
  4. 4 . The electronic device as claimed in claim 2 , wherein the anti-interference circuit further comprises a matching circuit; the matching circuit comprises a capacitor and an inductor; one end of the capacitor is connected to the radiator of the first antenna, another end of the capacitor is connected to one end of the inductor, and another end of the inductor is connected to the grounding circuit.
  5. 5 . The electronic device as claimed in claim 4 , wherein the capacitor is configured to disconnect the radiator of the first antenna to the grounding circuit when the first antenna operates at an operating frequency band of the first antenna.
  6. 6 . The electronic device as claimed in claim 4 , wherein the inductor is configured to change a flow direction of a current coupled to the first antenna from the second antenna and reduce an interference from the second antenna.
  7. 7 . The electronic device as claimed in claim 2 , wherein the connection point between the first antenna and the anti-interference circuit is located at a location where a voltage is zero on the radiator of the first antenna, other than the feed point of the first antenna and the ground point of the first antenna.
  8. 8 . The electronic device as claimed in claim 4 , wherein a distance between the connection point between the first antenna and the anti-interference circuit and a location at which maximum current exists on the second antenna is inversely correlated with an anti-interference capability of the anti-interference circuit.
  9. 9 . The electronic device as claimed in claim 8 , wherein the connection point between the first antenna and the anti-interference circuit is located on the radiator of the first antenna and is closest to the location at which the maximum current exists on the second antenna.
  10. 10 . The electronic device as claimed in claim 1 , wherein the second antenna is any one of a cellular antenna, a Wireless Fidelity antenna, a Bluetooth antenna, and a Global Positioning System antenna.
  11. 11 . The electronic device as claimed in claim 1 , wherein, the second antenna is located on the pressure plate bracket of the electronic device or is a part of a frame of the electronic device.
  12. 12 . The electronic device as claimed in claim 1 , wherein the radiator is routed in a shape of U, in a shape of rectangular with an opening, or in an irregular shape.
  13. 13 . An electronic device, comprising a first antenna and a second antenna disposed adjacent to the first antenna, the first antenna being a near field communication antenna; wherein a location other than a feed point of the first antenna and a ground point of the first antenna on a radiator of the first antenna is grounded to reduce interference between the first antenna and the second antenna.
  14. 14 . The electronic device as claimed in claim 13 , wherein the location other than the feed point and the ground point of the first antenna on the radiator of the first antenna is grounded through an antenna spring piece.
  15. 15 . The electronic device as claimed in claim 13 , further comprising a matching circuit, one end being connected to the location other than the feed point and the ground point of the first antenna on the radiator of the first antenna through an antenna spring piece, another end being grounded, such that the location other than the feed point and the ground point of the first antenna on the radiator is grounded.
  16. 16 . The electronic device as claimed in claim 15 , wherein the matching circuit comprises a capacitor and an inductor, wherein one end of the capacitor is connected to the location other than the feed point and the ground point of the first antenna on the radiator of the first antenna through the antenna spring piece, another end of the capacitor is connected to one end of the inductor, and another end of the inductor is grounded.
  17. 17 . The electronic device as claimed in claim 16 , wherein the another end of the inductor is grounded through another antenna spring piece.
  18. 18 . An electronic device, comprising a first antenna and a second antenna disposed adjacent to the first antenna, the first antenna being a near field communication antenna; wherein a plurality of exposed copper points are disposed on a radiator of the first antenna to reduce interference between the first antenna and the second antenna.
  19. 19 . The electronic device as claimed in claim 18 , wherein the plurality of exposed copper points are disposed close to a physical center point of the radiator of the first antenna, and the physical center point of the radiator of the first antenna has a voltage of zero.
  20. 20 . The electronic device as claimed in claim 18 , wherein each of the plurality of exposed copper points is grounded through a foam.

Description

CROSS REFERENCE TO RELATED APPLICATIONS The present disclosure is a continuation of International Patent Application No. PCT/CN2024/130209, filed on Nov. 6, 2024, which claims priority to Chinese Patent Application No. 202311519616.5 and filed on Nov. 14, 2023, both of which are herein incorporated by reference in their entireties. TECHNICAL FIELD The present disclosure relates to anti-interference technologies between antennas, and in particular to an electronic device. BACKGROUND Currently, a Computer Numerical Control (CNC) metal frame scheme and a Mode Decoration Antenna (MDA) process scheme is used in an antenna design of a mobile phone. However, due to a space limitation in the mobile phone frame, not all antennas may be designed on the frame. Therefore, a Flexible Printed Circuit board (FPC) may be separately added on a pressure plate bracket of the mobile phone to serve as a cellular antenna, a Bluetooth (BT) antenna, or an antenna with other frequency band. For example, a Near Field Communication (NFC) antenna is separately disposed above the pressure plate bracket. In this case, a mutual interference generates between the cellular antenna FPC and the NFC antenna, a spacing between the cellular antenna FPC and the NFC antenna is required to be increased. However, due to the limitation in the internal space of the mobile phone, the NFC antenna is forced close to the inner side of the mobile phone, reducing user experience. Thus, it may be seen that in the related art, electronic devices suffer from the technical problem of the mutual interference between two antennas due to the limitation in the internal space of the electronic devices. SUMMARY Some embodiments of the present disclosure provide an electronic device, including a first antenna and a second antenna; the first antenna is a near field communication antenna disposed above a pressure plate bracket of the electronic device, and is disposed adjacent to the second antenna; an anti-interference circuit is connected to a radiator of the first antenna, and a connection point between the radiator and the anti-interference circuit is located at a location other than a feed point of the first antenna and a ground point of the first antenna on the radiator of the first antenna; the anti-interference circuit is configured to reduce interference between the first antenna and the second antenna. Some embodiments of the present disclosure provide another electronic device, including a first antenna and a second antenna disposed adjacent to the first antenna, the first antenna being a near field communication antenna, wherein a location other than a feed point of the first antenna and a ground point of the first antenna on a radiator of the first antenna is grounded to reduce interference between the first antenna and the second antenna. Some embodiments of the present disclosure provide yet another electronic device, including a first antenna and a second antenna disposed adjacent to the first antenna, the first antenna being a near field communication antenna, wherein a plurality of exposed copper points are disposed on a radiator of the first antenna to reduce interference between the first antenna and the second antenna. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural schematic diagram of an electronic device according to some embodiments of the present disclosure. FIG. 2 is a structural schematic view of antennas in an electronic device in the related art. FIG. 3 is a structural schematic view of an example of antennas of an electronic device according to some embodiments of the present disclosure. FIG. 4 is a structural schematic diagram of a first example of an antenna routing of an electronic device according to some embodiments of the present disclosure. FIG. 5 is a structural schematic diagram of an example of an anti-interference circuit according to some embodiments of the present disclosure. FIG. 6 is a structural schematic view of a second example of an antenna routing of an electronic device according to some embodiments of the present disclosure. FIG. 7 is a schematic diagram of simulation results of antennas according to some embodiments of the present disclosure. FIG. 8 is a structural schematic diagram of a third example of antenna routings of an electronic device according to some embodiments of the present disclosure. DETAILED DESCRIPTION Some embodiments of the present disclosure provide an electronic device, including a first antenna and a second antenna; the first antenna is a near field communication antenna disposed above a pressure plate bracket of the electronic device, and is disposed adjacent to the second antenna; an anti-interference circuit is connected to a radiator of the first antenna, and a connection point between the radiator and the anti-interference circuit is located at a location other than a feed point of the first antenna and a ground point of the first antenna on the radiator of the first antenna; th