Antenna device

Abstract

The present invention relates to an antenna device comprising: an antenna structure cover; a first electromagnetic shielding cover located outside the antenna structure cover; and a first electrostatic shielding cover located on a side of the first electromagnetic shielding cover facing away from the antenna structure cover. The antenna device has good antenna performance.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to an antenna device. Background Art

[0002] With the advancement of science and technology, electronic products are moving towards miniaturization and micro-scaling. However, due to the limitations of these miniaturized structures, antenna devices have shown poor performance. Furthermore, as existing electronic products become increasingly integrated, their internal components emit electromagnetic waves of various frequencies during operation, which can affect the antenna performance of the antenna device. Improving antenna performance within the confines of these smaller devices has become an urgent challenge for researchers, and therefore, existing antenna devices require improvement. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor antenna performance of the antenna device in the prior art, thereby providing an antenna device.

[0004] The present invention provides an antenna device, comprising: an antenna structure cover; a first electromagnetic shielding cover located outside the antenna structure cover; and a first electrostatic shielding cover located on a side of the first electromagnetic shielding cover facing away from the antenna structure cover.

[0005] Optionally, the antenna structure cover includes: a first bearing cover and a second bearing cover surrounding the first bearing cover, the second bearing cover is located between the first bearing cover and the first electromagnetic shielding cover; and an antenna assembly is located between the first bearing cover and the second bearing cover.

[0006] Optionally, the first bearing cover includes a first silicone oil layer and a first release layer, the first silicone oil layer is located between the first release layer and the antenna assembly, and the antenna assembly is attached to the surface of the first silicone oil layer.

[0007] Optionally, the second bearing cover includes a second silicone oil layer and a second release layer, the second silicone oil layer is located between the second release layer and the antenna assembly, and the antenna assembly is attached to the surface of the second silicone oil layer.

[0008] Optionally, the antenna assembly includes: several antennas, a control unit and a convergence unit, each antenna has a first end and a second end relative to each other, the first ends of the several antennas are connected to the control unit, and the second ends of the several antennas are connected to the convergence unit.

[0009] Optionally, the antenna structure cover includes a first hemispherical area and a second hemispherical area, the antenna in the first hemispherical area is a transmitting antenna, and the antenna in the second hemispherical area is a receiving antenna.

[0010] Optionally, the first electromagnetic shielding cover includes: a first electromagnetic shielding base cover, a number of first solder pads spaced apart from each other, and a first bonding wire group, the first solder pad is located on the surface of the first electromagnetic shielding base cover facing the antenna structure cover; the first bonding wire group includes: a first bonding wire, one end of the first bonding wire is connected to the first solder pad, and the other end of the first bonding wire is spaced apart from the first electromagnetic shielding base cover; and / or, a second bonding wire, both ends of the second bonding wire are respectively connected to adjacent first solder pads; when the first bonding wire group includes a first bonding wire and a second bonding wire, the first solder pad connected to the first bonding wire is spaced apart from the first solder pad connected to the second bonding wire.

[0011] Optionally, the first bonding wires and the second bonding wires are alternately arranged in an extension direction of the antenna.

[0012] Optionally, the material of the first pad includes nickel palladium gold.

[0013] Optionally, the material of the first bonding wire includes gold.

[0014] Optionally, the material of the second bonding wire includes gold.

[0015] Optionally, the wire diameter of the first bonding wire is 18um-22um.

[0016] Optionally, the diameter of the second bonding wire is 18um-22um.

[0017] Optionally, a distance from the other end of the first bonding wire facing away from the first pad to the first electromagnetic shielding base cover is greater than or equal to a maximum distance from the second bonding wire to the first electromagnetic shielding base cover.

[0018] Optionally, the distance from the other end of the first bonding wire away from the first pad to the first electromagnetic shielding base cover is 350um-400um, and the maximum distance from the second bonding wire to the first electromagnetic shielding base cover is 250um-350um.

[0019] Optionally, a distance from the other end of the first bonding wire facing away from the first pad to the first electromagnetic shielding base cover is smaller than a maximum distance from the second bonding wire to the first electromagnetic shielding base cover.

[0020] Optionally, the distance from the other end of the first bonding wire away from the first pad to the first electromagnetic shielding base cover is 250um-350um, and the maximum distance from the second bonding wire to the first electromagnetic shielding base cover is 350um-400um.

[0021] Optionally, the first electromagnetic shielding cover also includes: a first anti-oxidation layer located on a portion of the surface of the first electromagnetic shielding base cover facing the antenna structure cover, the first anti-oxidation layer exposing the first solder pad; and a second anti-oxidation layer located on a surface of the first electromagnetic shielding base cover facing away from the antenna structure cover.

[0022] Optionally, the material of the first anti-oxidation layer includes: liquid photosolder resist.

[0023] Optionally, the material of the second anti-oxidation layer includes: liquid photosolder resist.

[0024] Optionally, it further includes: a second electromagnetic shielding cover, which is surrounded by the antenna structure cover; and a second electrostatic shielding cover, which is located on the side of the second electromagnetic shielding cover facing away from the antenna structure cover.

[0025] Optionally, the second electromagnetic shielding cover includes: a second electromagnetic shielding base cover, a number of second solder pads spaced apart from each other, and a second bonding wire group, the second solder pads being located on the surface of the second electromagnetic shielding base cover facing the antenna structure cover; the second bonding wire group includes: a third bonding wire, one end of the third bonding wire being connected to the second solder pad, and the other end of the third bonding wire being spaced apart from the second electromagnetic shielding base cover; and / or, a fourth bonding wire, both ends of the fourth bonding wire being respectively connected to adjacent second solder pads; when the second bonding wire group includes a third bonding wire and a fourth bonding wire, the second solder pad connected to the third bonding wire is spaced apart from the second solder pad connected to the fourth bonding wire.

[0026] Optionally, the third bonding wires and the fourth bonding wires are alternately arranged in an extension direction of the antenna.

[0027] Optionally, the material of the second pad includes nickel palladium gold.

[0028] Optionally, the material of the third bonding wire includes gold.

[0029] Optionally, the material of the fourth bonding wire includes gold.

[0030] Optionally, the wire diameter of the third bonding wire is 18um-22um.

[0031] Optionally, the diameter of the fourth bonding wire is 18um-22um.

[0032] Optionally, a distance from the other end of the third bonding wire facing away from the second pad to the second electromagnetic shielding base cover is greater than or equal to a maximum distance from the fourth bonding wire to the second electromagnetic shielding base cover.

[0033] Optionally, the distance from the other end of the third bonding wire away from the second pad to the second electromagnetic shielding base cover is 350um-400um, and the maximum distance from the fourth bonding wire to the second electromagnetic shielding base cover is 250um-350um.

[0034] Optionally, a distance from the other end of the third bonding wire facing away from the second pad to the second electromagnetic shielding base cover is smaller than a maximum distance from the fourth bonding wire to the second electromagnetic shielding base cover.

[0035] Optionally, the distance from the other end of the third bonding wire away from the second pad to the second electromagnetic shielding base cover is 250um-350um, and the maximum distance from the fourth bonding wire to the second electromagnetic shielding base cover is 350um-400um.

[0036] Optionally, the second electromagnetic shielding cover also includes: a third anti-oxidation layer located on the portion of the surface of the second electromagnetic shielding base cover facing the antenna structure cover, the third anti-oxidation layer exposing the second solder pad; and a fourth anti-oxidation layer located on the surface of the second electromagnetic shielding base cover facing away from the antenna structure cover.

[0037] Optionally, the material of the third anti-oxidation layer includes: liquid photosolder resist.

[0038] Optionally, the material of the fourth anti-oxidation layer includes: liquid photosolder resist.

[0039] Optionally, the transmitting antenna has a first peak segment and a first trough segment corresponding to the first peak segment on a path along the extension direction of the transmitting antenna, and the distance from the bottom surface of the first trough segment to the first electromagnetic shielding cover is greater than the distance from the apex of the first peak segment to the first electromagnetic shielding cover; the receiving antenna has a second peak segment and a second trough segment corresponding to the second peak segment on a path along the extension direction of the receiving antenna, and the distance from the bottom surface of the second trough segment to the first electromagnetic shielding cover is greater than the distance from the apex of the second peak segment to the first electromagnetic shielding cover.

[0040] Optionally, the material of the first electromagnetic shielding cover includes copper; the material of the first electrostatic shielding cover includes soft graphite conductive shielding material or aluminum.

[0041] Optionally, the material of the second electromagnetic shielding cover includes copper; the material of the second electrostatic shielding cover includes flexible graphite conductive shielding material or aluminum.

[0042] Optionally, the cavity of the antenna assembly is suitable for placing a signal processing control module and an electronic device, the signal processing control module is electrically connected to the electronic device, and the signal processing control module is suitable for sending a first signal or a second signal to the control unit, and the control unit controls the transmitting antenna to send an electromagnetic signal according to the first signal; and the control unit controls the receiving antenna to receive an electromagnetic signal according to the second signal.

[0043] The technical solution of the present invention has the following advantages:

[0044] The antenna device provided by the present invention includes: an antenna structure cover; a first electromagnetic shielding cover, located on the outside of the antenna structure cover; and a first electrostatic shielding cover, located on the side of the first electromagnetic shielding cover facing away from the antenna structure cover. The first electromagnetic shielding cover can shield electromagnetic wave signals from the external environment. The first electrostatic shielding cover can terminate the electric field on the surface of the first electrostatic shielding cover and transfer the charge to the ground. The first electromagnetic shielding cover and the first electrostatic shielding cover achieve a double shielding effect on the electromagnetic wave signals from the external environment. Therefore, the antenna performance of the antenna device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 A schematic structural diagram of an antenna device provided in one embodiment of the present invention;

[0047] Figure 2 A cross-sectional structural diagram of an antenna structure cover provided in one embodiment of the present invention;

[0048] Figure 3 A front view of an antenna assembly provided in one embodiment of the present invention;

[0049] Figure 4 A side view of an antenna assembly provided in accordance with an embodiment of the present invention;

[0050] Figure 5 A top view of an antenna assembly provided in one embodiment of the present invention;

[0051] Figure 6 A schematic structural diagram of a first electromagnetic shielding cover, an antenna structure cover, and a second electromagnetic shielding cover provided in one embodiment of the present invention;

[0052] Figure 7A simulation diagram of antenna performance of an antenna device provided in an embodiment of the present invention, which does not include the first electromagnetic shielding cover, the first electrostatic shielding cover, the second electromagnetic shielding cover, and the second electrostatic shielding cover, at a frequency range of 3400 MHz to 3500 MHz;

[0053] Figure 8 This is a simulation diagram of the antenna performance of the antenna device provided by one embodiment of the present invention in the frequency range of 3400 MHz-3500 MHz. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0057] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] This embodiment provides an antenna device, referring to Figure 1 ,include:

[0059] Antenna structure cover 1;

[0060] A first electromagnetic shielding cover 2, located outside the antenna structure cover 1;

[0061] The first electrostatic shielding cover 3 is located on a side of the first electromagnetic shielding cover 2 facing away from the antenna structure cover 1 .

[0062] In the antenna device provided in this embodiment, the first electromagnetic shielding cover 2 can shield the electromagnetic wave signals of the external environment, and the first electrostatic shielding cover 3 can terminate the electric field on the surface of the first electrostatic shielding cover 3 and transfer the charge to the ground. The first electromagnetic shielding cover 2 and the first electrostatic shielding cover 3 achieve double shielding of the electromagnetic wave signals of the external environment. Therefore, the antenna performance of the antenna device is better.

[0063] In one embodiment, the first electrostatic shielding cover 3 is grounded, and the first electrostatic shielding cover 3 is electrically connected to the first electromagnetic shielding cover 2 .

[0064] In one embodiment, reference Figure 2 The antenna structure cover 1 includes: a first bearing cover 11 and a second bearing cover 12 surrounding the first bearing cover 11, and the second bearing cover 12 is located between the first bearing cover 11 and the first electromagnetic shielding cover 2; an antenna assembly 13 is located between the first bearing cover 11 and the second bearing cover 12.

[0065] In one embodiment, the first bearing cover 11 includes a first silicone oil layer 111 and a first release layer 112 , the first silicone oil layer 111 is located between the first release layer 112 and the antenna assembly 13 , and the antenna assembly 13 is attached to the surface of the first silicone oil layer 111 .

[0066] In one embodiment, the thickness of the first silicone oil layer 111 is 1.8 mm to 2.2 mm, for example, 2 mm. The first release layer 112 provides a medium for the first silicone oil layer 111 to adhere to, which can improve the adhesion of the first silicone oil layer 111. The first release layer 112 and the first silicone oil layer 111 are bonded by pressing.

[0067] In one embodiment, the second bearing cover 12 includes a second silicone oil layer 121 and a second release layer 122 . The second silicone oil layer 121 is located between the second release layer 122 and the antenna assembly 13 . The antenna assembly 13 is attached to the surface of the second silicone oil layer 121 .

[0068] In one embodiment, the thickness of the second silicone oil layer 121 is 1.8 mm to 2.2 mm, for example, 2 mm. The second release layer 122 provides a medium for the second silicone oil layer 121 to adhere to, which can improve the adhesion of the second silicone oil layer 121. The second release layer 122 and the second silicone oil layer 121 are bonded by pressing.

[0069] In one embodiment, the material of the first electromagnetic shielding cover includes copper; in other embodiments, the material of the first electromagnetic shielding cover may also include other metals.

[0070] In one embodiment, the material of the first electrostatic shielding cover includes a flexible graphite conductive shielding material or aluminum; in other embodiments, the material of the first electrostatic shielding cover may also include other diamagnetic materials.

[0071] In one embodiment, in order to fully utilize space, the shape of the antenna assembly 13 includes a spherical shape.

[0072] In one embodiment, in conjunction with reference Figure 3 、 Figure 4 and Figure 5 The antenna assembly 13 includes: a plurality of antennas, a control part A and a convergence part B, each antenna has a first end and a second end relative to each other, the first ends of the plurality of antennas are connected to the control part A, and the second ends of the plurality of antennas are connected to the convergence part B; the antenna structure cover includes a first hemisphere area and a second hemisphere area, the antenna in the first hemisphere area is a transmitting antenna 131, and the antenna in the second hemisphere area is a receiving antenna 132.

[0073] In one embodiment, the number of the transmitting antennas 131 is equal to the number of the receiving antennas 132. For example, the number of the transmitting antennas 131 is 10 and the number of the receiving antennas 132 is 10. In other embodiments, the number of the transmitting antennas 131 is unequal to the number of the receiving antennas 132. The number of the transmitting antennas 131 and the number of the receiving antennas 132 can be increased or decreased based on actual signal transmission results.

[0074] In one embodiment, the transmitting antenna has a first crest segment and a first trough segment corresponding to the first crest segment along a path extending in the direction of the transmitting antenna, wherein the distance from the bottom surface of the first trough segment to the first electromagnetic shielding cover is greater than the distance from the apex of the first crest segment to the first electromagnetic shielding cover; the receiving antenna has a second crest segment and a second trough segment corresponding to the second crest segment along a path extending in the direction of the receiving antenna, wherein the distance from the bottom surface of the second trough segment to the first electromagnetic shielding cover is greater than the distance from the apex of the second crest segment to the first electromagnetic shielding cover. This arrangement facilitates extending the length of the transmitting antenna and the receiving antenna, reduces signal reflection during signal transmission, and thereby ensures the transmission performance of the transmitting antenna and the receiving antenna.

[0075] In one embodiment, reference Figure 6The first electromagnetic shielding cover 2 includes: a first electromagnetic shielding base cover 21, a plurality of first solder pads 22 spaced apart from each other, and a first bonding wire group 23, wherein the first solder pads 22 are located on the surface of the first electromagnetic shielding base cover 21 facing the antenna structure cover 1.

[0076] In one embodiment, continue to refer to Figure 6 The first bonding wire group 23 includes: a first bonding wire 231, one end of the first bonding wire 231 is connected to the first solder pad 22, and the other end of the first bonding wire 231 is spaced from the first electromagnetic shielding base 21; and / or, a second bonding wire 232, both ends of the second bonding wire 232 are respectively connected to adjacent first solder pads 22.

[0077] In one embodiment, continue to refer to Figure 6 When the first bonding wire group 23 includes the first bonding wire 231 and the second bonding wire 232 , the first pad connected to the first bonding wire 231 is spaced apart from the first pad connected to the second bonding wire 232 .

[0078] In one embodiment, continue to refer to Figure 6 The first bonding wires 231 and the second bonding wires 232 are alternately arranged in the extension direction of the antenna, which is conducive to improving the electromagnetic shielding effect of the second electromagnetic shielding cover.

[0079] In one embodiment, the material of the first pad 22 includes nickel palladium gold;

[0080] In one embodiment, the material of the first bonding wire 231 includes gold;

[0081] In one embodiment, the material of the second bonding wire 232 includes gold;

[0082] In one embodiment, the diameter of the first bonding wire 231 is 18 um-22 um, for example, 20 um.

[0083] In one embodiment, the diameter of the second bonding wire 232 is 18 um-22 um, for example, 20 um.

[0084] In one embodiment, the distance from the other end of the first bonding wire 231 away from the first pad 22 to the first electromagnetic shielding cover 21 is greater than or equal to the maximum distance from the second bonding wire 232 to the first electromagnetic shielding cover 21 .

[0085] In one embodiment, the distance from the other end of the first bonding wire 231 away from the first pad 22 to the first electromagnetic shielding base 21 is 350um-400um, and the maximum distance from the second bonding wire 232 to the first electromagnetic shielding base 21 is 250um-350um.

[0086] In another embodiment, the distance from the other end of the first bonding wire 231 away from the first pad 22 to the first electromagnetic shielding cover 21 is smaller than the maximum distance from the second bonding wire 232 to the first electromagnetic shielding cover 21 .

[0087] In one embodiment, the distance from the other end of the first bonding wire 231 away from the first pad 22 to the first electromagnetic shielding base cover 21 is 250um-350um, for example 300um, and the maximum distance from the second bonding wire 232 to the first electromagnetic shielding base cover 21 is 350um-400um, for example 360um.

[0088] The outer sides of the transmitting antenna 131 and the receiving antenna 132 are enclosed by first and second bonding wires 231, 232, which are located at different distances from the first electromagnetic shielding base 21. When electromagnetic waves from the external environment pass through the first and second bonding wires 231, 232, eddy currents are generated due to the induced electromotive force. The magnetic field generated by the eddy currents is exactly opposite to the direction of the external magnetic field, offsetting part of the external magnetic field, thereby providing electromagnetic shielding and reducing interference from the external magnetic field on the signals of the transmitting antenna 131 and the receiving antenna 132. In essence, the materials of the first and second bonding wires 231, 232 have a certain resistance. The Joule heat generated by the eddy currents dissipates the energy of the incident electromagnetic field, thus providing electromagnetic shielding. Therefore, the first and second bonding wires 231, 232 enhance the electromagnetic shielding effect of the antenna device.

[0089] In one embodiment, the first electromagnetic shielding cover 2 further includes: a first anti-oxidation layer located on a portion of the surface of the first electromagnetic shielding base cover 21 facing the antenna structure cover 1, the first anti-oxidation layer exposing the first solder pad; and a second anti-oxidation layer located on a surface of the first electromagnetic shielding base cover 21 facing away from the antenna structure cover 1. The first anti-oxidation layer and the second anti-oxidation layer are used to prevent oxidation of the first electromagnetic shielding base cover.

[0090] In one embodiment, the material of the first anti-oxidation layer includes liquid photoresist. In other embodiments, the material of the first anti-oxidation layer may further include other anti-oxidation materials.

[0091] In one embodiment, the material of the second anti-oxidation layer includes liquid photoresist. In other embodiments, the material of the second anti-oxidation layer may further include other anti-oxidation materials.

[0092] In one embodiment, continue to refer to Figure 1The antenna device further includes: a second electromagnetic shielding cover 4, which is surrounded by the antenna structure cover 1; and a second electrostatic shielding cover 5, which is located on the side of the second electromagnetic shielding cover 4 facing away from the antenna structure cover 1.

[0093] In one embodiment, the second electrostatic shielding cover 5 is grounded, and the second electromagnetic shielding cover 4 is electrically connected to the second electrostatic shielding cover 5 .

[0094] In one embodiment, the material of the second electromagnetic shielding cover 4 includes copper; in other embodiments, the material of the second electromagnetic shielding cover may also include other metals.

[0095] In one embodiment, the material of the second electrostatic shielding cover 5 includes a flexible graphite conductive shielding material or aluminum; in other embodiments, the material of the second electrostatic shielding cover may also include other diamagnetic materials.

[0096] In one embodiment, continue to refer to Figure 6 The second electromagnetic shielding cover 4 includes: a second electromagnetic shielding base cover 41, a plurality of second solder pads 42 spaced apart from each other, and a second bonding wire group 43, the second solder pad 42 is located on the surface of the second electromagnetic shielding base cover 41 facing the antenna structure cover 1; the second bonding wire group 43 includes: a third bonding wire 431, one end of the third bonding wire 431 is connected to the second solder pad 42, and the other end of the third bonding wire 431 is spaced apart from the second electromagnetic shielding base cover 41; and / or, a fourth bonding wire 432, both ends of the fourth bonding wire 432 are respectively connected to adjacent second solder pads 42.

[0097] In one embodiment, continue to refer to Figure 6 When the second bonding wire group 43 includes the third bonding wire 431 and the fourth bonding wire 432 , the second pad connected to the third bonding wire 431 is spaced apart from the second pad connected to the fourth bonding wire 432 .

[0098] In one embodiment, continue to refer to Figure 6 The third bonding wires 431 and the fourth bonding wires 432 are alternately arranged in the extension direction of the antenna, which is beneficial to improving the electromagnetic shielding effect of the second electromagnetic shielding cover.

[0099] In one embodiment, the second pad 42 is made of nickel-palladium-gold.

[0100] In one embodiment, the material of the third bonding wire 431 includes gold; in other embodiments, the material of the third bonding wire 431 may also include other metals.

[0101] In one embodiment, the material of the fourth bonding wire 432 includes gold; in other embodiments, the material of the fourth bonding wire 432 may further include other metals.

[0102] In one embodiment, the diameter of the third bonding wire 431 is 18 um-22 um, for example, 20 um.

[0103] In one embodiment, the fourth bonding wire 432 has a diameter of 18 um to 22 um, for example, 20 um.

[0104] In one embodiment, the distance from the other end of the third bonding wire 431 facing away from the second pad 42 to the second electromagnetic shielding cover 41 is greater than or equal to the maximum distance from the fourth bonding wire 432 to the second electromagnetic shielding cover 41 .

[0105] In one embodiment, the distance from the other end of the third bonding wire 431 away from the second pad 42 to the second electromagnetic shielding base cover 41 is 350um-400um, for example 360um, and the maximum distance from the fourth bonding wire 432 to the second electromagnetic shielding base cover 41 is 250um-350um, for example 300um.

[0106] In another embodiment, the distance from the other end of the third bonding wire 431 facing away from the second pad 42 to the second electromagnetic shielding cover 41 is smaller than the maximum distance from the fourth bonding wire 432 to the second electromagnetic shielding cover 41 .

[0107] In one embodiment, the distance from the other end of the third bonding wire 431 away from the second pad 42 to the second electromagnetic shielding base cover 41 is 250um-350um, for example 300um, and the maximum distance from the fourth bonding wire 432 to the second electromagnetic shielding base cover 41 is 350um-400um, for example 360um.

[0108] The inner sides of the transmitting antenna 131 and the receiving antenna 132 are enclosed by third and fourth bonding wires 431 and 432, located at different distances from the second electromagnetic shielding base 41. When electromagnetic waves generated by the electronic components inside the antenna structure pass through the third and fourth bonding wires 431 and 432, induced electromotive force (EMF) generates eddy currents in the third and fourth bonding wires 431 and 432. The magnetic field generated by the eddy currents is in the opposite direction of the magnetic field generated by the electronic components, offsetting some of the magnetic field generated by the electronic components, thereby providing electromagnetic shielding and reducing interference from the magnetic field generated by the electronic components on the signals of the transmitting antenna 131 and the receiving antenna 132. The essence of this is that the material of the third and fourth bonding wires 431 and 432 has a certain resistance, and the Joule heat generated by the eddy currents dissipates the energy of the incident electromagnetic field, thus providing electromagnetic shielding. Therefore, the third and fourth bonding wires 431 and 432 enhance the electromagnetic shielding effect of the antenna device.

[0109] In one embodiment, the second electromagnetic shielding cover 4 further includes: a third anti-oxidation layer located on a portion of the surface of the second electromagnetic shielding base cover facing the antenna structure cover, the third anti-oxidation layer exposing the second solder pad; and a fourth anti-oxidation layer located on a surface of the second electromagnetic shielding base cover facing away from the antenna structure cover.

[0110] In one embodiment, the material of the third anti-oxidation layer includes liquid photoresist; in other embodiments, the material of the third anti-oxidation layer may further include other anti-oxidation materials.

[0111] In one embodiment, the material of the fourth anti-oxidation layer includes liquid photo-solder resist; in other embodiments, the material of the fourth anti-oxidation layer may further include other anti-oxidation materials.

[0112] In one embodiment, the cavity of the antenna assembly is suitable for placing a signal processing control module 6 and an electronic device 7, the signal processing control module 6 is electrically connected to the electronic device 7, and the signal processing control module is suitable for sending a first signal or a second signal to the control unit, and the control unit controls the transmitting antenna to send an electromagnetic signal according to the first signal; and the control unit controls the receiving antenna to receive an electromagnetic signal according to the second signal.

[0113] The antenna assembly 13 is the core component of the antenna structure cover 1. When the electronic device 7 needs to send an electromagnetic signal to the outside world, the electronic device 7 sends a control signal to the signal processing control module 6. After receiving the control signal, the signal processing control module 6 sends a feedback signal that can be sent to the electronic device 7. Then the electronic device 7 sends the electromagnetic signal (the electromagnetic signal includes pictures, audio, video signals, etc.) to the signal processing control module 6. After receiving the electromagnetic signal, the signal processing control module 6 compresses the signal. After compression, the signal processing control module 6 sends the electromagnetic signal through the control unit A. When the electronic device needs to receive an electromagnetic signal from the outside world, the electronic device sends a control signal to the signal processing control module. After receiving the control signal, the signal processing control module sends a feedback signal that can be received to the electronic device. Then the signal processing control module receives the electromagnetic signal from the outside world through the control unit A and decompresses the signal. After compression, the signal processing control module 6 sends the electromagnetic signal to the electronic device.

[0114] In one embodiment, the antenna device provided in this embodiment includes: an antenna structure cover 1, a first electromagnetic shielding cover 2, a first electrostatic shielding cover 3, a second electromagnetic shielding cover 4, a second electrostatic shielding cover 5, a signal processing control module 6 and an electronic device 7.

[0115] In one embodiment, the antenna performance of the antenna device is simulated in the communication frequency band of 3400MHz-3500MHz. The full-wave three-dimensional electromagnetic simulation software (HFSS model) based on the electromagnetic field finite element method for analyzing microwave engineering problems is used to simulate the antenna performance in this band, and the return loss characteristic (S11) is selected as the antenna performance measurement indicator. The return loss characteristic (S11) is used to reflect the quality of the antenna performance. The larger its value (absolute value) is, the greater the energy of the signal transmitted by the antenna itself is, and the better the antenna performance is. Figure 7 , Figure 7 is a simulation effect diagram of an antenna device that does not include the first electromagnetic shielding cover, the first electrostatic shielding cover, the second electromagnetic shielding cover, and the second electrostatic shielding cover. Figure 7 The simulation results show that when the first electromagnetic shielding cover, the first electrostatic shielding cover, the second electromagnetic shielding cover and the second electrostatic shielding cover are used, the return loss (S11) of the antenna assembly 13 is greater than -15dB. Figure 8 , Figure 8 This is a simulation effect diagram of the antenna device provided by this embodiment. Figure 8 The simulation results show that the influence of the electromagnetic wave signals emitted by the electronic device and the external environment on the antenna component 13 is significantly reduced, the return loss (S11) of the antenna component 13 is less than -15dB, and the antenna performance is good. Therefore, the antenna device provided in this embodiment can stably send and receive electromagnetic wave signals.

[0116] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An antenna device, characterized in that: include: Antenna structure cover; a first electromagnetic shielding cover, located outside the antenna structure cover; a first electrostatic shielding cover, located on a side of the first electromagnetic shielding cover facing away from the antenna structure cover; a second electromagnetic shielding cover, the second electromagnetic shielding cover being surrounded by the antenna structure cover; a second electrostatic shielding cover, located on a side of the second electromagnetic shielding cover facing away from the antenna structure cover; The antenna structure cover comprises: a first bearing cover and a second bearing cover surrounding the first bearing cover, wherein the second bearing cover is located between the first bearing cover and the first electromagnetic shielding cover; an antenna assembly is located between the first bearing cover and the second bearing cover; The antenna assembly includes: a plurality of antennas, a control unit and a convergence unit, each antenna having a first end and a second end opposite to each other, the first ends of the plurality of antennas are connected to the control unit, and the second ends of the plurality of antennas are connected to the convergence unit; The antenna structure cover includes a first hemispherical area and a second hemispherical area. The antenna in the first hemispherical area is a transmitting antenna, and the antenna in the second hemispherical area is a receiving antenna.

2. The antenna device according to claim 1, wherein The first bearing cover includes a first silicone oil layer and a first release layer, the first silicone oil layer is located between the first release layer and the antenna assembly, and the antenna assembly is attached to the surface of the first silicone oil layer; The second bearing cover includes a second silicone oil layer and a second release layer, the second silicone oil layer is located between the second release layer and the antenna assembly, and the antenna assembly is attached to the surface of the second silicone oil layer.

3. The antenna device according to claim 1, wherein The first electromagnetic shielding cover comprises: a first electromagnetic shielding base cover, a plurality of first solder pads spaced apart from each other, and a first bonding wire group, wherein the first solder pads are located on a surface of the first electromagnetic shielding base cover facing the antenna structure cover; The first bonding wire group includes: a first bonding wire, one end of which is connected to a first pad, and the other end of which is spaced apart from the first electromagnetic shielding base; and / or a second bonding wire, two ends of which are respectively connected to adjacent first pads; When the first bonding wire group includes a first bonding wire and a second bonding wire, a first pad connected to the first bonding wire is spaced apart from a first pad connected to the second bonding wire; The first bonding wires and the second bonding wires are alternately arranged in an extension direction of the antenna; The material of the first pad includes nickel palladium gold; The material of the first bonding wire includes gold; The material of the second bonding wire includes gold; The diameter of the first bonding wire is 18um-22um; The diameter of the second bonding wire is 18um-22um.

4. The antenna device according to claim 3, wherein: The distance between the other end of the first bonding wire facing away from the first pad and the first electromagnetic shielding cover is greater than or equal to the maximum distance between the second bonding wire and the first electromagnetic shielding cover; The distance between the other end of the first bonding wire facing away from the first pad and the first electromagnetic shielding base cover is 350um-400um, and the maximum distance between the second bonding wire and the first electromagnetic shielding base cover is 250um-350um.

5. The antenna device according to claim 3, wherein The distance between the other end of the first bonding wire facing away from the first pad and the first electromagnetic shielding cover is smaller than the maximum distance between the second bonding wire and the first electromagnetic shielding cover; The distance between the other end of the first bonding wire facing away from the first pad and the first electromagnetic shielding base cover is 250um-350um, and the maximum distance between the second bonding wire and the first electromagnetic shielding base cover is 350um-400um.

6. The antenna device according to claim 3, wherein: The first electromagnetic shielding cover further includes: a first anti-oxidation layer located on a portion of the surface of the first electromagnetic shielding base cover facing the antenna structure cover, the first anti-oxidation layer exposing the first solder pad; and a second anti-oxidation layer located on a surface of the first electromagnetic shielding base cover facing away from the antenna structure cover. The material of the first anti-oxidation layer includes: liquid photoresist; The material of the second anti-oxidation layer includes: liquid photoresist.

7. The antenna device according to claim 1, wherein The second electromagnetic shielding cover comprises: a second electromagnetic shielding base cover, a plurality of second solder pads spaced apart from each other, and a second bonding wire group, wherein the second solder pads are located on a surface of the second electromagnetic shielding base cover facing the antenna structure cover; The second bonding wire group includes: a third bonding wire, one end of the third bonding wire is connected to the second pad, and the other end of the third bonding wire is spaced apart from the second electromagnetic shielding base; and / or a fourth bonding wire, both ends of the fourth bonding wire are respectively connected to adjacent second pads; When the second bonding wire group includes a third bonding wire and a fourth bonding wire, the second pad connected to the third bonding wire is spaced apart from the second pad connected to the fourth bonding wire.

8. The antenna device according to claim 7, wherein: The third bonding wires and the fourth bonding wires are alternately arranged in an extending direction of the antenna.

9. The antenna device according to claim 7, wherein: The material of the second pad includes nickel palladium gold; the material of the third bonding wire includes gold; the material of the fourth bonding wire includes gold; the wire diameter of the third bonding wire is 18um-22um; the wire diameter of the fourth bonding wire is 18um-22um.

10. The antenna device according to claim 7, wherein: The distance from the other end of the third bonding wire facing away from the second pad to the second electromagnetic shielding cover is greater than or equal to the maximum distance from the fourth bonding wire to the second electromagnetic shielding cover.

11. The antenna device according to claim 10, wherein: The distance from the other end of the third bonding wire away from the second pad to the second electromagnetic shielding base cover is 350um-400um, and the maximum distance from the fourth bonding wire to the second electromagnetic shielding base cover is 250um-350um.

12. The antenna device according to claim 7, wherein: The distance from the other end of the third bonding wire facing away from the second pad to the second electromagnetic shielding cover is smaller than the maximum distance from the fourth bonding wire to the second electromagnetic shielding cover.

13. The antenna device according to claim 12, wherein: The distance from the other end of the third bonding wire away from the second pad to the second electromagnetic shielding base cover is 250um-350um, and the maximum distance from the fourth bonding wire to the second electromagnetic shielding base cover is 350um-400um.

14. The antenna device according to claim 7, wherein: The second electromagnetic shielding cover also includes: a third anti-oxidation layer located on the surface of the second electromagnetic shielding base cover facing the antenna structure cover, the third anti-oxidation layer exposing the second solder pad; and a fourth anti-oxidation layer located on the surface of the second electromagnetic shielding base cover away from the antenna structure cover.

15. The antenna device according to claim 14, wherein: The material of the third anti-oxidation layer includes: liquid photo-solder resist; the material of the fourth anti-oxidation layer includes: liquid photo-solder resist.

16. The antenna device according to claim 1, wherein The transmitting antenna has a first wave crest section and a first wave valley section corresponding to the first wave crest section along a path along the extension direction of the transmitting antenna, and the distance from the bottom surface of the first wave valley section to the first electromagnetic shielding cover is greater than the distance from the top surface of the first wave crest section to the first electromagnetic shielding cover; The receiving antenna has a second peak segment and a second trough segment corresponding to the second peak segment on a path along the extension direction of the receiving antenna, and the distance from the bottom surface of the second trough segment to the first electromagnetic shielding cover is greater than the distance from the vertex of the second peak segment to the first electromagnetic shielding cover.

17. The antenna device according to claim 1, wherein The material of the first electromagnetic shielding cover includes copper; the material of the first electrostatic shielding cover includes flexible graphite conductive shielding material or aluminum.

18. The antenna device according to claim 1, wherein The material of the second electromagnetic shielding cover includes copper; the material of the second electrostatic shielding cover includes flexible graphite conductive shielding material or aluminum.

19. The antenna device according to claim 1, wherein The cavity of the antenna assembly is suitable for placing a signal processing control module and an electronic device. The signal processing control module is electrically connected to the electronic device. The signal processing control module is suitable for sending a first signal or a second signal to the control unit. The control unit controls the transmitting antenna to send an electromagnetic signal according to the first signal; and the control unit controls the receiving antenna to receive an electromagnetic signal according to the second signal.

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