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CN-115603037-B - Electronic equipment

CN115603037BCN 115603037 BCN115603037 BCN 115603037BCN-115603037-B

Abstract

The application discloses electronic equipment, and belongs to the technical field of electronic products. The electronic equipment comprises a metal frame body, wherein the metal frame body comprises at least three frame bodies, a first break joint is formed between the first frame body and the second frame body, a second break joint is formed between the second frame body and the third frame body, a third break joint is formed at one end, far away from the second frame body, of the third frame body, a first feed point is arranged at a first position, close to the second break joint, of the second frame body, a first antenna radiator is formed at the second frame body, the first antenna radiator is used for transmitting signals of a first frequency band, the first frequency band is higher than a first preset frequency, the first feed point is connected with a matching network, a first grounding point is arranged on the first frame body, a first parasitic unit of the first antenna radiator is formed at a part between the first grounding point and the first break joint, and a second parasitic unit of the first antenna radiator is formed at a part between the second grounding point and the second break joint.

Inventors

  • CHENG XIAOQI
  • MA NING

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260512
Application Date
20221031

Claims (7)

  1. 1. The electronic equipment is characterized by comprising a metal frame body, wherein the metal frame body comprises at least three frame bodies, a first fracture is formed between a first frame body and a second frame body, a second fracture is formed between the second frame body and a third frame body, and a third fracture is formed at one end, far away from the second frame body, of the third frame body; The second frame body is provided with a first feed point at a first position close to the second fracture, and the second frame body forms a first antenna radiator, wherein the first antenna radiator is used for transmitting signals of a first frequency band, and the first frequency band is higher than a first preset frequency; a first grounding point is arranged on the first frame body, and a first parasitic unit of the first antenna radiator is formed at a part between the first grounding point and the first fracture; a second grounding point is arranged on the third frame body, and a second parasitic unit of the first antenna radiator is formed at a part between the second grounding point and the second fracture; A second adjusting switch is arranged at a second position between the second grounding point and the second fracture; The electronic device further comprises a first shell and a second shell which are correspondingly connected in a rotating way, wherein the first shell can be switched between an unfolding state and a folding state relative to the second shell; Wherein, the part of the first frame body, which is positioned on the second shell body, is provided with a fourth fracture and a fifth fracture; the first frame body is divided into a first sub frame body, a second sub frame body and a third sub frame body by the fourth fracture and the fifth fracture, the fourth fracture is arranged between the first sub frame body and the second sub frame body, the fifth fracture is arranged between the second sub frame body and the third sub frame body, the first antenna radiator, the first fracture and the second fracture are all arranged on the bottom frame body corresponding to the first shell body, the fourth fracture, the fifth fracture and the second sub frame body are all arranged on the top frame body corresponding to the second shell body, a fourth grounding point is arranged on the third sub frame body, and a third tuning switch is connected at a third position between the fourth grounding point and the fifth fracture; The second sub-frame forms a first auxiliary parasitic branch, and a third grounding point is arranged on the second sub-frame; the third sub-frame forms a second auxiliary parasitic branch, wherein in the folded state, currents on the first auxiliary parasitic branch and the second auxiliary parasitic branch are in the same direction as currents of the first antenna radiator, the first parasitic unit and the second parasitic unit; a first tuning switch is connected at a fifth position between the second grounding point and the third fracture, and a second feeding point is arranged between the fifth position and the second grounding point; The part between the second grounding point and the third fracture forms a second antenna radiator, the second antenna radiator is used for transmitting signals of a second frequency band, the second frequency band is lower than a second preset frequency, and the second preset frequency is smaller than or equal to the first preset frequency.
  2. 2. The electronic device of claim 1, wherein the second regulating switch comprises a change-over switch, a second capacitor, a third capacitor, a second inductor and a third inductor, wherein one end of the change-over switch is grounded, and the other end of the change-over switch is connected to the first ends of the second capacitor, the third capacitor, the second inductor and the third inductor, and the second ends of the second capacitor, the third capacitor, the second inductor and the third inductor are connected to the second position.
  3. 3. The electronic device according to claim 1, wherein the second grounding point is grounded through a radiation length adjustment unit; The inductance of the radiation length adjusting unit is smaller than a first value, or the resistance of the radiation length adjusting unit is 0 ohm.
  4. 4. The electronic device of claim 1, further comprising a USB module disposed inside the second housing; One end of the second frame body, which is close to the second fracture, extends to the inside of the electronic equipment for a first distance.
  5. 5. The electronic device of any one of claims 1-4, wherein the matching network comprises an LC circuit comprising a first inductance and a first capacitance; The feed signal input end is connected with the first feed point through the first capacitor, one end of the first inductor is grounded, and the other end of the first inductor is connected with a connection point of the first capacitor and the first feed point.
  6. 6. The electronic device of claim 1, wherein a length of the metal frame between the second ground point and the second break is 2.5mm to 3.5mm.
  7. 7. The electronic device of claim 1, wherein a length of the metal frame between the second break and the second ground point is 15mm to 17mm.

Description

Electronic equipment Technical Field The application belongs to the technical field of electronic products, and particularly relates to electronic equipment. Background With the rapid development of 5G communication technology, the frequency bands and the number of antennas of mobile terminals are rapidly increased, and the mobile terminals also put higher demands on the quality of antenna signals, such as requiring the antennas to support 4 x 4mimo, supporting medium-high frequency (middlehighband, MHB) full-band carrier aggregation (Carrier Aggregation, CA), and so on, so that higher demands are put on the performance of the antennas. Meanwhile, based on the electromagnetic radiation influence of the mobile terminal on the human body, the electromagnetic wave absorption ratio or specific absorption rate (Specific Absorption Rate, SAR) of the antenna by an operator also provides definite control. At present, high-performance antennas and low SAR are often contradictory, the higher the antenna performance is, the higher the SAR is, and the two are generally opposite, and the traditional antenna design generally adopts the sacrifice of the antenna performance to meet SAR value requirements, but the sacrifice of the user experience of terminal signals is carried out to a certain extent. Therefore, how to reduce the SAR value while maintaining the antenna performance is a technical problem to be solved. Disclosure of Invention The embodiment of the application aims to provide electronic equipment, which can solve the technical problem that how to reduce SAR value while guaranteeing the performance of an antenna is needed to be solved. In order to solve the technical problems, the application is realized as follows: the embodiment of the application provides electronic equipment, which comprises a metal frame body, wherein the metal frame body comprises at least three frame bodies, a first break joint is formed between the first frame body and the second frame body, a second break joint is formed between the second frame body and the third frame body, a third break joint is formed at one end, far away from the second frame body, of the third frame body, a first feed point is arranged at a first position, close to the second break joint, of the second frame body, the second frame body forms a first antenna radiator, the first antenna radiator is used for transmitting signals of a first frequency band, the first frequency band is higher than a first preset frequency, the first feed point is connected with a matching network, a first grounding point is arranged on the first frame body, a first parasitic unit of the first antenna radiator is formed at a part between the first grounding point and the first break joint, and a second parasitic unit of the first antenna radiator is formed at a part between the second grounding point and the second break joint. In the embodiment of the application, the metal frame body comprises at least three frame bodies, wherein a first fracture is formed between the first frame body and the second frame body, a second fracture is formed between the second frame body and the third frame body, and a third fracture is formed at one end, far away from the second frame body, of the third frame body. Wherein a first feeding point is arranged at a first position of the second frame body, which is close to the second fracture, and the second frame body forms a first antenna radiator; the first antenna radiator is used as a feed body, and the first parasitic unit is excited through the first fracture coupling to form a radiation mode main body of the high-intermediate frequency antenna. The first parasitic element is far away from the ground feed point, the first feed point is coupled to a half-wave mode of the first parasitic element through an electric field across the first break, the second parasitic element is close to the first feed point, strong magnetic field coupling is formed through the second break, the impedance of the high-intermediate frequency antenna can be optimized, and further, high-intermediate frequency full-band coverage can be achieved through a matching network, and the performance of the antenna is guaranteed. And, because the first feed point is far away from the first parasitic element, two current maximum points are distributed on the first grounding point and the first feed point, so that the current is distributed on the first antenna radiator and the first parasitic element in a more dispersed way, and the mid-high frequency SAR value is balanced. Therefore, the embodiment of the application not only meets the antenna performance, but also has specific low SAR characteristics. Drawings FIG. 1 is a schematic diagram of a conventional electronic device; FIG. 2 shows one of the schematic structural diagrams of an electronic device according to an embodiment of the present invention; FIG. 3 shows one of the S-parameter impedance diagrams according to an embodiment