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CN-122026110-A - Navigation antenna and electronic equipment

CN122026110ACN 122026110 ACN122026110 ACN 122026110ACN-122026110-A

Abstract

The application provides a navigation antenna and electronic equipment, and belongs to the technical field of antennas. The navigation antenna comprises a radiator, wherein the radiator is used for receiving radio frequency navigation signals of at least one navigation satellite system and is arranged on one side of a reference ground, the radiator is provided with a target structure, a feed point is arranged on the radiator, the feed point is in a feed state, the reference ground is matched with the radiator to form symmetrical current distribution which is strong in the middle and weak towards two ends, the radiator is matched with the reference ground, and the length of a current path formed on the target structure is higher than the physical length of the target structure along the current direction.

Inventors

  • YANG SHIRONG

Assignees

  • 联想(北京)有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. A navigation antenna, comprising: the radiator is used for receiving radio frequency navigation signals of at least one navigation satellite system and is arranged on one side of the reference ground; the radiator has a target structure; The radiator is provided with a feed point, and the reference ground is matched with the radiator to form symmetrical current distribution which is strong in the middle and fades down towards two ends in the radiator when the feed point is in a feed state; wherein the length of the current path formed on the target structure is higher than the physical length of the target structure along the current direction.
  2. 2. The navigational antenna of claim 1, further comprising an impedance matching unit connected between a feed point of the radiator and a source of radio frequency signals for matching an impedance of the radiator to a target impedance in a navigational band to enable the radiator to form the symmetrical current distribution state.
  3. 3. The navigational antenna of claim 1, said radiator comprising a first radiating section and a second radiating section in said current direction, said target structure being located between said first radiating section and second radiating section, the current intensity of said target structure being greater than the current intensity of both radiating sections; the current length of the first radiation section and the second radiation section along the current direction is not longer than the physical length of the first radiation section and the second radiation section.
  4. 4. A navigation antenna as claimed in claim 3, the target structure being a conductive stub comprising a plurality of conductive segments connected end to end, one end of the conductive stub being connected to the first radiating segment and the other end being connected to the second radiating segment.
  5. 5. The navigation antenna of claim 4, a plurality of the conductive segments each extending in a longitudinal direction of the radiator.
  6. 6. A navigational antenna according to claim 3, wherein the length of the first radiating section is equal to the length of the second radiating section.
  7. 7. The navigation antenna of claim 3, wherein the length of the target structure along the extending direction of the radiator is 1/5 wavelength to 1/10 wavelength.
  8. 8. A navigation antenna as set forth in claim 3 wherein said radiator is a three-dimensional structure and said target structure includes a plurality of winding segments extending in different planes, said plurality of winding segments being layered on different levels perpendicular to the direction of extension of said radiator body.
  9. 9. The navigation antenna of claim 2, the impedance matching unit being configured as a capacitor having one end connected to a feed point of the radiator and the other end connected to a radio frequency signal source.
  10. 10. An electronic device, comprising: A body; A carrier for carrying and conducting the electronic element is arranged in the body, and the carrier is provided with a reference ground; The navigation antenna is arranged on the carrier, comprises a radiator, is used for receiving radio frequency navigation signals of at least one navigation satellite system and is arranged on one side of the reference ground; the radiator has a target structure; The radiator is provided with a feed point, and the reference ground is matched with the radiator to form symmetrical current distribution which is strong in the middle and fades down towards two ends in the radiator when the feed point is in a feed state; wherein the length of the current path formed on the target structure is higher than the physical length of the target structure along the current direction.

Description

Navigation antenna and electronic equipment Technical Field The invention belongs to the technical field of antennas, and particularly relates to a navigation antenna and electronic equipment. Background Navigation and positioning with a mobile device is one of the common functions. The performance of the navigation antenna is directly related to the accuracy of the connection speed of positioning and navigation. The performance of the navigation antenna is very important in mobile devices. Furthermore, it is very advantageous for the navigation antenna to have an upward pattern considering that the satellite is directly above us, whereas in practice because the small antenna of the mobile terminal is generally omni-directional based on a frequency reduction, the setting of the pattern is downward, which directly affects the communication performance between the mobile terminal and the satellite. Disclosure of Invention In order to solve the above technical problems, an object of the present application is to provide a navigation antenna and an electronic device. The adopted technical scheme is as follows: A navigation antenna, comprising: the radiator is used for receiving radio frequency navigation signals of at least one navigation satellite system and is arranged on one side of the reference ground; the radiator has a target structure; The radiator is provided with a feed point, and the reference ground is matched with the radiator to form symmetrical current distribution which is strong in the middle and fades down towards two ends in the radiator when the feed point is in a feed state; wherein the length of the current path formed on the target structure is higher than the physical length of the target structure along the current direction. In some embodiments, the antenna further comprises an impedance matching unit, wherein the impedance matching unit is connected between a feeding point of the radiator and a radio frequency signal source and is used for matching the impedance of the radiator to a target impedance in a navigation frequency band so that the radiator can form the symmetrical current distribution state. In some embodiments, the radiator comprises a first radiating section and a second radiating section in the current direction, the target structure is located between the first radiating section and the second radiating section, and the current intensity of the target structure is greater than the current intensity of the two radiating sections; the current length of the first radiation section and the second radiation section along the current direction is not longer than the physical length of the first radiation section and the second radiation section. In some embodiments, the target structure is a conductive branch, the conductive branch includes a plurality of conductive segments connected end to end, one end of the conductive branch is connected to the first radiation segment, and the other end is connected to the second radiation segment. In some embodiments, a plurality of the conductive segments each extend in a length direction of the radiator. In some embodiments, the length of the first radiating section is equal to the length of the second radiating section. In some embodiments, the length of the target structure along the extending direction of the radiator is 1/5 wavelength to 1/10 wavelength. In some embodiments, the radiator is a three-dimensional structure, and the target structure includes a plurality of winding segments extending in different planes, the plurality of winding segments being stacked on layers of different heights perpendicular to the direction in which the radiator body extends. In some embodiments, the impedance matching unit is configured as a capacitor, one end of which is connected to the feeding point of the radiator, and the other end of which is connected to a radio frequency signal source. An electronic device, comprising: A body; A carrier for carrying and conducting the electronic element is arranged in the body, and the carrier is provided with a reference ground; The navigation antenna is arranged on the carrier, comprises a radiator, is used for receiving radio frequency navigation signals of at least one navigation satellite system and is arranged on one side of the reference ground; the radiator has a target structure; The radiator is provided with a feed point, and the reference ground is matched with the radiator to form symmetrical current distribution which is strong in the middle and fades down towards two ends in the radiator when the feed point is in a feed state; wherein the length of the current path formed on the target structure is higher than the physical length of the target structure along the current direction. Drawings In order to more clearly illustrate the embodiments of the application or the technical solutions and advantages of the prior art, the following description will briefly explain the drawings used in the em