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CN-115458940-B - Electronic equipment

CN115458940BCN 115458940 BCN115458940 BCN 115458940BCN-115458940-B

Abstract

The invention discloses an electronic device. The electronic equipment comprises a first antenna, a third antenna and a second antenna which are sequentially arranged, wherein the first antenna and the second antenna are used for working on a first frequency band, the third antenna is used for working on a second frequency band, the second frequency band is different from the first frequency band, the distance between the first antenna and the second antenna is larger than a preset distance, and the preset distance is determined according to the lowest frequency point in the first frequency band. In the invention, the distance between the first antenna and the second antenna is larger than the preset distance determined according to the lowest frequency point in the same working frequency band, so that the isolation between the first antenna and the second antenna can meet the requirement, and meanwhile, the third antenna working in different frequency bands is arranged between the first antenna and the second antenna working in the same frequency band, so that the isolation between the three antennas can meet the requirement in the limited space of the electronic equipment.

Inventors

  • LIAO JIANXING

Assignees

  • 上海移为通信技术股份有限公司

Dates

Publication Date
20260508
Application Date
20221011

Claims (6)

  1. 1. The electronic equipment is characterized by comprising a first antenna, a third antenna and a second antenna which are sequentially arranged, wherein the first antenna, the second antenna and the third antenna are all vertically polarized dipole antennas; the first antenna and the second antenna are both used for working on a first frequency band, and the third antenna is used for working on a second frequency band, wherein the second frequency band is different from the first frequency band; The distance between the first antenna and the second antenna is larger than a preset distance, wherein the preset distance is determined according to the lowest frequency point in the first frequency band; The electronic equipment further comprises a circuit board, a first matching component, a second matching component, a third matching component, a first antenna interface, a second antenna interface, a third antenna interface, a first radio frequency module and a second radio frequency module which are arranged on the circuit board, wherein the first radio frequency module is arranged at a position close to the first antenna and the third antenna, and the second radio frequency module is arranged at a position close to the second antenna; the first port of the first radio frequency module is sequentially connected with the first antenna through the first matching component, the first antenna interface and the first antenna, the second port of the first radio frequency module is sequentially connected with the second antenna through the second matching component, the second antenna interface and the second antenna, and the second radio frequency module is sequentially connected with the third antenna through the third matching component and the third antenna interface; If the first frequency band is larger than the second frequency band, the radio frequency link between the second radio frequency module and the third antenna is longer than the radio frequency link between the first radio frequency module and the second antenna; Or alternatively; If the first frequency band is smaller than the second frequency band, the radio frequency link between the first radio frequency module and the second antenna is longer than the radio frequency link between the second radio frequency module and the third antenna; The first matching component, the second matching component, the third matching component, the first antenna interface, the second antenna interface, the third antenna interface, the first radio frequency module and the second radio frequency module are all arranged on the same layer of the circuit board; The second antenna interface and the third antenna interface are of the same type and are of a different type than the first antenna interface.
  2. 2. The electronic device of claim 1, wherein the preset distance is greater than or equal to a ratio of a wavelength corresponding to a lowest frequency point in the first frequency band to 2Ω.
  3. 3. The electronic device of claim 1, wherein the third matching component is connected to a first pad, and a second pad is arranged around the first pad and is grounded; And a radio frequency wire in the antenna cable in the third antenna is connected with the first bonding pad, and a ground wire in the antenna cable in the third antenna is connected with the second bonding pad.
  4. 4. The electronic device of claim 1, further comprising a fourth antenna disposed proximate to the second antenna, the first antenna, the third antenna, the second antenna, and the fourth antenna disposed in sequence, the fourth antenna configured to operate on a third frequency band, wherein the third frequency band is different from the first frequency band and greater than the second frequency band; the electronic equipment further comprises a fourth matching component, a fourth antenna interface and a third radio frequency module which are arranged on the circuit board; The third radio frequency module is connected with the third antenna through the third matching component, a third antenna interface and the third antenna in sequence; The second radio frequency module is replaced by being connected with the fourth antenna through the fourth matching component, the fourth antenna interface and the fourth antenna in sequence.
  5. 5. The electronic device of claim 4, wherein the first matching component, the second matching component, the third matching component, the fourth matching component, the first antenna interface, the second antenna interface, the third antenna interface, the fourth antenna interface, the first radio frequency module, the second radio frequency module, and the third radio frequency module are all disposed on a same layer of the circuit board; The types of the second antenna interface and the third antenna interface are both of a first type, the types of the first antenna interface and the fourth antenna interface are both of a second type, and the first type is different from the second type.
  6. 6. The electronic device of claim 5, wherein a radio frequency link between the third radio frequency module and the third antenna is longer than a radio frequency link between the second radio frequency module and the fourth antenna.

Description

Electronic equipment Technical Field The invention relates to the technical field of antennas, in particular to electronic equipment. Background Antenna isolation refers to the ratio of the power of a signal transmitted by one antenna to the power of a signal received by another antenna. The isolation of an antenna depends on the antenna radiation pattern, the spatial distance of the antenna, the antenna gain, etc. If the isolation between antennas in the electronic device cannot meet the requirement, the communication quality of the electronic device is affected. With the development of mobile communication technology, in order to provide users with more kinds of communication services, the number of antennas provided in electronic devices is increased. After placing multiple antennas in a size-constrained electronic device, the increased number of antennas and reduced spacing between antenna elements may result in strong mutual coupling between antenna elements. The existence of mutual coupling not only reduces the isolation between antenna units, so that the isolation cannot meet the requirements to influence the communication quality, but also reduces the efficiency of the antenna. Disclosure of Invention The invention aims to overcome the defect that isolation between antennas cannot meet the requirement due to the fact that a plurality of antennas are arranged in electronic equipment with limited size in the prior art. The invention solves the technical problems by the following technical scheme: The invention provides electronic equipment, which comprises a first antenna, a third antenna and a second antenna which are sequentially arranged; the first antenna and the second antenna are both used for working on a first frequency band, and the third antenna is used for working on a second frequency band, wherein the second frequency band is different from the first frequency band; The distance between the first antenna and the second antenna is larger than a preset distance, wherein the preset distance is determined according to the lowest frequency point in the first frequency band. Optionally, the preset distance is greater than or equal to a ratio of a wavelength corresponding to a lowest frequency point in the first frequency band to 2pi. Optionally, the electronic device further comprises a circuit board, a first matching component, a second matching component, a third matching component, a first antenna interface, a second antenna interface, a first radio frequency module and a second radio frequency module which are arranged on the circuit board, wherein the first radio frequency module is arranged at a position close to the first antenna and the third antenna, and the second radio frequency module is arranged at a position close to the second antenna; The first port of the first radio frequency module is connected with the first antenna through the first matching component, the first antenna interface in sequence; the second port of the first radio frequency module is connected with the second antenna through the second matching component, the second antenna interface and the second antenna in sequence; the second radio frequency module is connected with the third antenna through the third matching component in sequence. Optionally, the electronic device further includes a third antenna interface disposed on the circuit board, and the third matching component is connected to the third antenna through the third antenna interface. Optionally, the first matching component, the second matching component, the third matching component, the first antenna interface, the second antenna interface, the third antenna interface, the first radio frequency module and the second radio frequency module are all arranged on the same layer of the circuit board; The second antenna interface and the third antenna interface are of the same type and are of a different type than the first antenna interface. Optionally, if the first frequency band is greater than the second frequency band, a radio frequency link between the second radio frequency module and the third antenna is longer than a radio frequency link between the first radio frequency module and the second antenna. Optionally, if the first frequency band is smaller than the second frequency band, a radio frequency link between the first radio frequency module and the second antenna is longer than a radio frequency link between the second radio frequency module and the third antenna. Optionally, the first matching component, the second matching component, the first antenna interface, the second antenna interface and the first radio frequency module are disposed on a top layer of the circuit board, and the third matching component, the third antenna interface and the second radio frequency module are disposed on a bottom layer of the circuit board; the types of the first antenna interface, the second antenna interface and the third antenna interface are the same