WO2019029189A1 - Antenna assembly and wireless communication electronic device having the antenna assembly, and remote controller - Google Patents

Abstract

The present invention relates to the field of communications, and provides an antenna assembly, a wireless communication electronic device, and a remote controller, the antenna assembly being mounted on a substrate, and the substrate comprising a first surface and a second surface. The antenna assembly comprises a radiation unit, a feeder line and a first reference ground. The radiation unit is provided on the first surface, and comprises first and second radiation units which are spaced apart. The feeder line comprises a microstrip feeder line, and first and second power-division microstrip lines. The first power-division microstrip line is connected between the microstrip feeder line and the first radiation unit, the second power-division microstrip line is connected between the microstrip feeder line and the second radiation unit, and the lengths of the first and second power-division microstrip lines are different. The first reference ground is provided on the second surface. The lengths of the first and second power-division microstrip lines are different, so that the maximum radiation direction of the antenna assembly is upturned, improving the effect in use of the antenna assembly when being applied to the wireless communication electronic device.

Description

Antenna assembly and wireless communication electronic device and remote controller having the same

The priority of the Chinese patent application filed on August 8, 2017, the application number is 201710672676.9, and the application name is "antenna component and wireless communication electronic device having the antenna assembly, remote control", the entire contents of which are incorporated by reference. Combined in this application.

[Technical Field]

The present invention relates to the field of communications, and in particular, to an antenna assembly and a wireless communication electronic device and a remote controller having the same.

【Background technique】

The antenna is an indispensable component of the communication industry. In order to meet the demand for miniaturization of wireless communication electronic devices, the antenna is constantly moving toward miniaturization. Microstrip antennas are widely used because of their advantages of miniaturization, ease of integration, and good directionality.

The microstrip antenna is usually placed on a thin dielectric substrate with a thin metal layer as a grounding plate and a metal patch with a certain shape on the other side. The microstrip or coaxial probe is used to feed the patch to form a patch. Complete microstrip antenna. Currently, the maximum radiation direction of the microstrip antenna is generally directed to the normal direction of the substrate on which the microstrip antenna is mounted, which may be a component on the wireless communication device, for example, may be the backplane of the wireless communication device. When the wireless communication device is used, the maximum radiation direction of the microstrip antenna mounted on the substrate is often unable to directly point to the direction of another device communicating with the wireless communication device due to the user's holding habit, and thus cannot be maximized. By using the direction of the maximum gain of the microstrip antenna pattern, the high gain of the microstrip antenna cannot be fully utilized, so that the use effect of the microstrip antenna cannot achieve the intended design goal.

[Summary of the Invention]

In order to solve the technical problem, an embodiment of the present invention provides an antenna assembly with a maximum radiation direction, a good use effect, a wireless communication electronic device having the antenna assembly, and a remote controller.

In order to solve the technical problem, the embodiment of the present invention provides the following technical solutions:

An antenna assembly for mounting on a substrate, the substrate including opposite first and second surfaces. The antenna assembly includes a radiating unit, a feeder, and a first reference ground. The radiating unit is disposed on the first surface, and the radiating unit includes at least first and second radiating units, and the first radiating unit is spaced apart from the second radiating unit. The feeder includes a microstrip feed line, a first power split microstrip line, and a second power split microstrip line, wherein the first power split microstrip line is connected between the microstrip feed line and the first radiating element, The second power split microstrip line is connected between the microstrip feed line and the second radiating element, and the lengths of the first power split microstrip line and the second power split microstrip line are not equal. The first reference ground is disposed on the second surface.

In some embodiments, the input power obtained by the first radiating element and the second radiating element from the feeder is equal.

In some embodiments, the antenna assembly further includes a third radiating unit and a fourth radiating unit disposed at intervals; the feeder further includes a third power split microstrip line, a fourth power split microstrip line, and a fifth power split a microstrip line, a first end of the third power split microstrip line is connected to the microstrip feed line, and a second end of the third power split microstrip line is connected to the fourth power split microstrip line One end and a first end of the fifth power split microstrip line; a second end of the fourth power split microstrip line is connected to the third radiating element, and the second power split microstrip line is second The fourth radiating unit is connected to the end.

In some embodiments, the fourth power split microstrip line and the fifth power split microstrip line are not equal in length.

In some embodiments, the input power obtained by the third radiating element and the fourth radiating element from the feeder is equal.

In some embodiments, the input power obtained by the third radiating element from the feeder is equal to the input power obtained by the first radiating element from the feeder.

In some embodiments, the length of the first power split microstrip line is greater than the length of the second power split microstrip line, and the length of the fourth power split microstrip line is greater than the fifth power split microstrip The length of the line, the current phase of the first radiating element and the third radiating element being the same.

In some embodiments, the antenna assembly further includes a coaxial line; the coaxial line includes a bare inner core and a bare outer core, the bare inner core connecting the microstrip feed line, the bare outer The core is electrically connected to the first reference ground.

In some embodiments, the antenna assembly further includes a second reference ground, the second reference ground is disposed on the first surface, and the first reference ground is electrically connected to the second reference ground; A bare outer core is mounted to the second reference ground.

In some embodiments, the antenna assembly further includes a flexible circuit board including a first connection end and a second connection end; the first connection end being disposed on the first surface, the first The connecting end connects the bare outer core of the coaxial line; the second connecting end is disposed on the second surface, and the second connecting end is connected to the first reference ground.

In some embodiments, the antenna assembly is disposed within a wireless communication electronic device, the substrate being a plastic plate for securing a display device of the wireless communication electronic device.

In some embodiments, the antenna assembly is a microstrip antenna.

In order to solve the technical problem, the embodiment of the present invention further provides the following technical solutions:

A wireless communication electronic device comprising the antenna assembly described above.

In some embodiments, the wireless communication electronic device includes a display device including a screen and the substrate; the first reference is disposed on a back side of the screen, and the substrate is fixed to the screen Insulation board.

In order to solve the technical problem, the embodiment of the present invention further provides the following technical solutions:

A remote controller including a remote control host and a display, one end of the display being pivotally connected to the remote control host, wherein the display includes a screen, a substrate fixing the screen, and an antenna assembly mounted on the substrate Wherein the antenna component is the antenna component described above.

In some embodiments, the maximum radiation direction of the antenna assembly is at an angle to the normal to the display.

In some embodiments, the remote control is used to control a movable object, the maximum radiation direction of the antenna assembly being directed toward the movable object during use of the remote control.

In some embodiments, the movable object is an unmanned aerial vehicle.

Compared with the prior art, the lengths of the first power split microstrip line and the second power split microstrip line in the embodiment of the present invention are not equal, so that a current exists between the first and second radiating elements. The phase difference causes the maximum radiation direction of the antenna assembly to be upturned, which can improve the use effect of the antenna assembly when applied in a wireless communication electronic device.

[Description of the Drawings]

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, wherein the antenna assembly is mounted on a substrate;

Figure 2 is a top plan view of the antenna assembly shown in Figure 1;

3 is an exploded perspective view of the antenna assembly and the substrate shown in FIG. 1;

4 is a schematic structural diagram of an antenna assembly according to another embodiment of the present invention, wherein the antenna assembly is mounted on a substrate;

Figure 5 is a top plan view of the antenna assembly shown in Figure 4;

6 is an exploded perspective view of the antenna assembly and the substrate shown in FIG. 4;

FIG. 7 is a schematic structural diagram of an antenna assembly according to another embodiment of the present invention, wherein the antenna component is mounted on a substrate of a wireless communication electronic device;

Figure 8 is a side elevational view of the antenna assembly shown in Figure 7;

9 is a top plan view of the antenna assembly shown in FIG. 7;

10 is an exploded perspective view of the antenna assembly and the substrate shown in FIG. 7;

Figure 11 is an S parameter diagram of the antenna assembly shown in Figures 4 to 10;

Figure 12 is an E-plane pattern of the radiation of the antenna assembly shown in Figures 4 to 10 at 2.45 GHz;

FIG. 13 is a schematic structural diagram of a wireless communication electronic device according to another embodiment of the present invention.

【Detailed ways】

In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. It is to be noted that when an element is described as being "fixed" to another element, it can be directly on the other element or one or more of the elements in the middle. When an element is referred to as "connected" to another element, it can be a <RTI ID=0.0> </ RTI> </ RTI> <RTIgt; The terms "vertical," "horizontal," "left," "right," "inside," "outside," and the like, as used in this specification, are for the purpose of illustration.

Unless otherwise defined, all technical and scientific terms used in the specification are the same meaning The terms used in the description of the present invention are for the purpose of describing the specific embodiments and are not intended to limit the invention. The term "and/or" used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 to FIG. 3 , an antenna assembly 100 according to an embodiment of the present invention is mounted on a substrate 200 , and the antenna assembly 100 and the substrate 200 are both mounted on a wireless communication electronic device. The wireless communication electronic device can be a mobile phone, a tablet or other wireless communication electronic device, such as a drone remote control.

The substrate 200 is an insulating medium such as a fiberglass board or a Rogers board. The substrate 200 is rectangular and includes a first surface 202, a second surface 204, and an end surface 206. The end surface 206 is connected between the first surface 202 and the second surface 204 , and the first surface 202 and the second surface 204 are disposed on opposite sides of the substrate 200 .

The antenna assembly 100 is a microstrip antenna including a radiating element 20, a feed line 30, a grounding element 40, and a coaxial line 50. The radiation unit 20 and the feed line 30 are disposed on the first surface 202 of the substrate 200, the feed line 30 is electrically connected to the radiation unit 20, and the feed line 30 and the grounding element 40 pass through the coaxial Line 50 is connected to the peripheral circuit.

The number of the radiating units 20 is two, including: a first radiating unit 21 and a second radiating unit 22. Each of the radiating elements 20 is a rectangular metal piece having a size of 48 mm x 43 mm. The first radiating element 21 and the second radiating element 22 are aligned in the first direction.

The first radiating unit 21 includes two first side edges 212 disposed in parallel and two second side edges 214 disposed in parallel. The second radiating element 22 includes two third side edges 222 disposed in parallel and two fourth side edges 224 disposed in parallel. One of the two first side edges 212 is aligned with a corresponding one of the third side edges 222, and the other of the two first side edges 212 corresponds to the third side 222 of the other. Align. The second side 214 is disposed in parallel with the fourth side 224.

The first radiating element 21 comprises a first connection point 210 for connecting the feed line 30. The first connection point 210 is located in the middle of the first side 212. Similarly, the second radiating element 22 includes a second connection point 220 for connecting the feed line 30. The second connection point 220 is located in the middle of the third side 222.

The distance between the first radiating element 21 and the second radiating element 22 is d1, that is, the distance between the center of the first radiating unit 21 and the center of the second radiating unit 22 is d1. In an embodiment, the distance between the first connection point 210 and the second connection point 220 is also d1.

The radiation unit 20 may be formed on the first surface 202 of the substrate 200 by a photolithography etching method; or the radiation unit 20 may be fixed to the first surface 202 of the substrate 200 after being formed into a metal piece.

It is to be understood that in some other embodiments, the radiating elements 20 may vary in size, spacing, and layout according to different needs; the radiating element 20 may also take other shapes, such as a circle. An elliptical shape, a circular shape, a hexagonal shape, or the like; the number of the radiation units 20 may also be changed according to actual needs, as long as the radiation unit 20 includes at least the first radiation unit 21 and the second radiation unit 22, that is, The number of radiating elements 20 can be at least two, for example, 3 or 4 radiating elements.

The feeder 30 includes a microstrip feed line 31, a first power split microstrip line 32, and a second power split microstrip line 33. As shown in FIG. 1, the microstrip feed line 31 is of a linear type, and the first power split microstrip line 32 and the second power split microstrip line 33 are of the "L" type. It should be understood that in other implementations, the line patterns of the microstrip feed line 31, the first power split microstrip line 32, and the second power split microstrip line 33 may also be in other forms. The first power split microstrip line 32 is connected between the microstrip feed line 31 and the first connection point 210 of the first radiating unit 21, and the second power split microstrip line 33 is connected to the micro The feed line 31 is between the second connection point 220 of the second radiating element 22.

The length of the first power split microstrip line 32 is not equal to the length of the second power split microstrip line 33. For the embodiment shown in Figures 1 to 3, the length of the first power split microstrip line 32 refers to the sum of the lengths of the two sides of the "L" type first power split microstrip line 32, the second power division The length of the microstrip line 33 refers to the sum of the lengths of the two sides of the "L" type second power division microstrip line 33. In this embodiment, the length of the first power split microstrip line 32 is greater than the length of the second power split microstrip line 33.

The feed line 30 may be formed on the first surface 202 of the substrate 200 by a photolithography etching method; or the radiation unit 20 may be fixed to the first surface 202 of the substrate 200 after being formed into a metal piece or a metal line. It can be understood that, in some other embodiments, the feed line 30 is not limited to being a metal piece or a metal wire, nor is it limited to being disposed on the first surface 202, and may be correspondingly changed according to different feeding modes.

The grounding element 40 includes a first reference ground 41 and a second reference ground 42. The second reference ground 42 is disposed on the first surface 202 , and the first reference ground 41 is disposed on the second surface 204 , and the second reference ground 42 is electrically connected to the first reference ground 41 .

The second reference ground 42 is a metal piece, and the second reference ground 42 may be formed on the first surface 202 of the substrate 200 by a photolithography etching method; or the second reference ground 42 may be formed into a metal piece. Fixed to the first surface 202 of the substrate 200. It can be appreciated that in some other embodiments, the second reference ground 42 can be a metal block or other electrical conductor.

The first reference ground 41 is a metal plate having a cross-sectional area equal to a cross-sectional area of the second surface 204. It will be appreciated that in some other embodiments, other metallic materials within the wireless communication electronics may be employed as a reference for the antenna assembly 100.

The substrate 200 is provided with a via 206, the position of which corresponds to the position of the second reference ground 42. The second reference ground 42 is electrically connected to the first reference ground 41 through the via 206. It can be understood that in some other embodiments, the via 206 can be omitted, and the second reference ground 42 can be electrically connected to the first reference ground 41 by other means, for example, using wires or other conductive materials. The second reference ground 42 is electrically connected to the first reference ground 41.

One end of the coaxial wire 50 strips the transparent film insulating layer 56, the braid layer and the outer cover to obtain a bare inner core 52 and a bare outer core 54, and a transparent film insulation is disposed between the inner core 52 and the outer core 54. Layer 56. The bare inner core 52 is soldered to one end of the microstrip feed line 31 away from the radiating element 20, and the bare outer core 54 is soldered to the second reference ground 42.

The coaxial line 50 is fed to the antenna assembly 100 through a 50 ohm microstrip feed line 31. Then, the first power split microstrip line 32 and the second power split microstrip line 33 are used to achieve power distribution, and the impedance is 100 ohms.

It can be understood that in some other embodiments, the microstrip feeder 31 can be electrically connected to the peripheral circuit through other metal connectors, such as metal wires, or by other connections. Similarly, the second reference ground 42 may be omitted, and the first reference ground 41 may be electrically connected to the peripheral circuit through other metal connectors, such as metal wires, or by other connection means.

The overall size of the antenna assembly 100 is 170×130 mm ² , that is, the size of the substrate 200 is 170×130 mm ² .

The size of the radiating element 20 affects the operating frequency of the antenna assembly 100, and the distance d between the center of the first radiating element 21 and the center of the second radiating element 22 affects the antenna assembly 100. Gain. In this embodiment, the size of the radiating element 20 is 48 mm×43 mm, and the antenna assembly 100 can satisfy the coverage of the commonly used 2.45 GHz band. It can be understood that in some other embodiments, the radiating unit 20 Different sizes may also be employed to meet the application of different frequency bands. For example, the size of the radiating element 20 may be 20 mm x 20 mm, and the antenna assembly 100 may satisfy the coverage of the 5.8 GHz band; in addition, even the antenna assembly 100 Working in the 2.45 GHz band, the size of the radiating element 20 is not necessarily limited to 48 mm x 43 mm.

The length of the first power split microstrip line 32 is not equal to the length of the second power split microstrip line 33, so that the current phase difference α1 existing between the first radiating element 21 and the second radiating element 22 As a result, the maximum radiation direction of the antenna assembly 100 is upturned, which is advantageous for the antenna assembly 100 to achieve better use when in use.

Referring to FIG. 4 to FIG. 6 , an antenna assembly 400 according to another embodiment of the present invention is substantially the same as the antenna assembly 100 provided in the foregoing embodiment, except that in the antenna assembly 400 of the embodiment, The radiating unit 20 further includes a third radiating unit 23 and a fourth radiating unit 24; the feeder 30 further includes a third power split microstrip line 34, a fourth power split microstrip line 35, and a fifth power split microstrip line 36. . As shown in FIG. 4, the third power split microstrip line 34 is a plurality of 90 degree bent line types, and the fourth power split microstrip line 35 and the fifth power split microstrip line 36 are "L" type. It should be understood that in other implementations, the line shape of the third power division microstrip line 34, the fourth power division microstrip line 35, and the fifth power division microstrip line 36 may also be other forms.

The third radiating element 23 and the fourth radiating element 24 are also rectangular metal sheets having a size of 48 mm x 43 mm. The third radiating element 23 and the fourth radiating element 24 are also aligned along the first direction, and the first radiating unit 21 and the third radiating unit 23 are aligned in a second direction, the first direction being perpendicular to the second direction.

The third radiating unit 23 includes two fifth side edges 232 disposed in parallel and two sixth side edges 234 disposed in parallel. The fourth radiating element 24 includes two seventh side edges 242 disposed in parallel and two eighth side edges 244 disposed in parallel. One of the two of the fifth side edges 232 is aligned with a corresponding one of the seventh side edges 242, and the other of the two of the fifth side edges 232 is corresponding to the other of the seventh side edges 242. Align. The sixth side 234 and the eighth side 244 are disposed in parallel.

The third radiating element 23 comprises a third connection point 230 for connecting the feed line 30. The third connection point 230 is located in the middle of the fifth side 232. Similarly, the fourth radiating element 24 includes a fourth connection point 240 for connecting the feed line 30. The fourth connection point 240 is located in the middle of the seventh side 242.

The distance between the third radiating element 23 and the fourth radiating element 24 is d2, that is, the distance between the center of the third radiating element 23 and the center of the fourth radiating element 24 is d2. In an embodiment, the distance between the third connection point 230 and the fourth connection point 240 is also d2. It can be understood that d1 and d2 may be equal or not equal, and those skilled in the art may decide according to actual needs.

The first end of the third power split microstrip line 34 is connected to the microstrip feed line 31, and the second end of the third power split microstrip line 34 is respectively connected to the fourth power split microstrip line 35 One end and a first end of the fifth power split microstrip line 36; a second end of the fourth power split microstrip line 35 is connected to a third connection point 230 of the third radiating element 23, The second end of the five-power sub-strip line 36 is coupled to the fourth connection point 240 of the fourth radiating element 24. The length of the fourth power split microstrip line 35 is not equal to the length of the fifth power split microstrip line 36. For the embodiment shown in FIGS. 4 to 6, the length of the fourth power split microstrip line 35 refers to the sum of the lengths of the two sides of the fourth power split microstrip 35 of the "L" type, and the fifth power is slightly different. The length of the strip line 36 refers to the sum of the lengths of the two sides of the fifth power split microstrip line 36 of the "L" type. In this embodiment, the length of the fourth power split microstrip line 35 is greater than the length of the fifth power split microstrip line 36.

The coaxial line 50 is fed to the antenna assembly 400 through a 50 ohm microstrip feed line 31. Then, the third power split microstrip line 34, the first power split microstrip line 32 and the second power split microstrip line 33 are used for power distribution, and the impedances are 100 ohms, 200 ohms and 200 ohms, respectively, and power distribution. The ratio is 2:1:1. Finally, the fourth power split microstrip line 35 and the fifth power split microstrip line 36 further divide the input power of the third power split microstrip line 34 by 200 ohms. Therefore, the input powers of the first, second, third, and fourth radiating elements 21, 22, 23, and 24 are equal.

The length of the first power split microstrip line 32 is not equal to the length of the second power split microstrip line 33, so that the current phase difference α1 existing between the first radiating element 21 and the second radiating element 22 The length of the fourth power split microstrip line 35 is not equal to the length of the fifth power split microstrip line 36, so that the current phase existing between the third radiating element 23 and the fourth radiating element 24 The difference is α2. The first radiating element 21 and the third radiating element 23 are to be kept in phase, that is, the phase difference is 0 or an integral multiple of 360 degrees. To satisfy this condition, the first microstrip connecting the first radiating element 21 is connected. The length difference between the feed line 32 and the third and fourth microstrip feed lines 34, 35 connected to the third radiating element 23 needs to be designed such that the phase difference satisfies the above conditions.

a current phase difference α1 existing between the first radiating unit 21 and the second radiating unit 22, and a current phase difference α2 existing between the third radiating unit 23 and the fourth radiating unit 22, so that the antenna assembly 400 The maximum radiation direction is upturned, which is advantageous for the antenna assembly 400 to achieve better use when in use.

Referring to FIG. 7 to FIG. 9 , an antenna assembly 500 according to another embodiment of the present invention is substantially the same as the antenna assembly 400 provided in the foregoing embodiment, except that the antenna assembly 500 is installed in a wireless communication electronic device having a display device. The display device includes a screen 300 and a substrate 200a, and a metal member 302 is disposed on the back of the screen 300, and the metal member 302 serves as a first reference ground.

The substrate 200a may be a plastic plate such as a polycarbonate (PC) plate. The substrate 200a is disposed inside the wireless communication electronic device for fixing or reinforcing the screen 300. In particular, when the screen 300 is larger, the rigidity is smaller, and the substrate 200a is usually disposed to perform the screen 300. fixed.

The substrate 200a is rectangular and includes a first surface 202a, a second surface 204a, and an end surface 206a. The end surface 206a is connected between the first surface 202a and the second surface 204a, and the first surface 202a and the second surface 204a are disposed on opposite sides of the substrate 200a.

It is to be understood that in some other embodiments, the substrate 200a can be any other insulative component within the wireless communication electronics, such as the front, rear, and the like of the wireless communication electronics that house the screen 300.

In this embodiment, the metal member 302 disposed on the back surface of the screen 300 is a metal plate, which is a shielding plate for shielding the screen 300, in order to prevent the screen 300 of the display device from being subjected to other electronic components in the wireless communication electronic device. The shielding of the device is usually provided with a shielding plate for shielding the screen 300. The antenna assembly 500 is a reference plate that is inherently used on a display device of a wireless communication electronic device as a reference ground for the antenna assembly 500, thereby saving space of the antenna assembly 500. It can be understood that in other embodiments of the present invention, other metal materials inside the wireless communication electronic device may also be used as a reference ground for the antenna assembly 500.

In the present embodiment, the antenna assembly 500 includes a flexible circuit board 60. The flexible circuit board 60 is used to ground the antenna assembly 500, i.e., the flexible circuit board 60 functions the same as the ground element 40 of the embodiment shown in Figures 4-6. One end of the flexible circuit board 60 is connected to the peripheral circuit through the coaxial line 50, and the other end is connected to the metal member 302. The microstrip feed line 31 is connected to the peripheral circuit through the inner core 52 of the coaxial line 50, and the exposed outer core 54 is soldered to the flexible circuit board 60.

Referring to FIG. 10 together, the flexible circuit board 60 is bent and is adjacent to an end surface 206a of the substrate 200a. The flexible circuit board 60 includes a first connection end 62 and a second connection end 64. The first connecting end 62 is disposed on the first surface 202a, the first connecting end 62 is spaced apart from the microstrip feed line 31 by a predetermined distance, and the exposed outer core 54 of the coaxial line 50 is soldered to The first connection end 62. The second connecting end 64 is disposed on the second surface 204 a and electrically connected to the metal member 302 .

In this embodiment, the antenna assembly 500 has an overall size of 135×130 mm ² , that is, the fourth radiating unit 24 is away from the seventh side 242 of the flexible circuit board 60 and adjacent to the flexible circuit board 60 . The distance L1 between the end faces 206a is 135 mm, and the first radiating element 21 is away from the second side 214 of the second radiating element 22 and the second radiating element 22 is away from the first radiating unit 21. The distance L2 between the fourth side edges 224 is 130 mm.

The antenna assembly 500 of the embodiment of the present invention utilizes the substrate 200a of the wireless communication electronic device as the medium carrying radiation unit 20, instead of the insulating medium (for example, Rogers sheet) used as an antenna assembly in the prior art, so that the antenna assembly 500 occupies The space is reduced. Compared with the antenna module of the same size in the prior art, the Rogers plate is omitted, and the component for fixing or reinforcing the display device which is originally provided in the wireless communication electronic device is used as the medium of the antenna assembly 500, so that in the embodiment of the present invention The antenna assembly 500 leaves only a very thin patch of the radiating element 20 and the feeder 30, which is priced at only $10, saving the cost of the antenna assembly 500. The substrate 200a is thicker and also increases the bandwidth of the antenna assembly 500.

Moreover, the antenna assembly 500 of the embodiment of the present invention utilizes the back metal member 302 of the screen 300 of the display device as a reference ground for the antenna assembly 500, saving space of the antenna assembly 500, and because the metal member 302 as a reference ground is large, The antenna assembly 500 has stable performance and strong directivity, achieving high gain of the antenna assembly 500.

Referring to FIG. 11, the antenna assembly 400, 500 of the embodiment of the present invention can operate at 2.34 GHz to 2.62 GHz and has a bandwidth of 280 MHz, which can meet the coverage of the commonly used 2.45 GHz band.

Referring to FIG. 12, an E-plane pattern of the antenna assembly 400, 500 radiated at 2.45 GHz according to an embodiment of the present invention. As can be seen from FIG. 12, the antenna assembly 400, 500 is a directional antenna, and the maximum radiation direction is implemented. Up to 15 degrees, the gain can reach 10.5dBi, and the 3dB bandwidth of the elevation surface can reach 45 degrees. Since the pattern of the antenna assembly 400, 500 is upturned, it is advantageous to make the use effect better. In particular, when the antenna assembly 400, 500 is mounted on a wireless communication electronic device with a display device, for example, a mobile phone, a tablet computer, a remote controller with a display device, since the user is in the process of using the wireless communication electronic device, The screen 300 of the display device is generally inclined at an angle to the horizontal plane, and the pattern of the antenna assembly 400, 500 is upturned so that its maximum radiation direction can still be directed to the horizontal plane, so that the use of the antenna assembly 400, 500 can be achieved. optimal.

Yet another embodiment of the present invention provides a wireless communication electronic device including a display device. The wireless communication electronic device can be a mobile phone, a tablet computer, a remote controller, or the like. Taking the wireless communication electronic device as a remote controller and using the remote controller to operate the drone as an example: generally, the flight distance of the drone (the horizontal distance between the drone and the position point where the user is located, that is, The horizontal distance between the remote control and the drone is far greater than the flying height of the drone (the distance between the drone and its ground projection point), for example, when the drone flies 2km away and 120m high, The flying distance of the drone is 2km far greater than the flying height of 120m, and the remote control and the drone can be approximated as being at the same level. In this case, if the antenna on the remote controller is designed to ensure that the maximum radiation direction of the antenna is directed to the horizontal direction, that is, to the direction of the drone, the antenna can be fully utilized in the process of using the remote controller. Thereby the use of the antenna achieves the best results.

Since the display device of the wireless communication electronic device is usually inclined at an angle to the horizontal plane during the use of the wireless communication electronic device, the antenna assembly of the embodiment of the present invention can be fully utilized for the above-mentioned considerations. The high gain of the antenna allows the antenna to be used optimally.

The technical features of the wireless communication electronic device of the present embodiment will be described below by taking a remote controller as an example.

Referring to FIG. 13, an embodiment of the present invention provides a remote controller 600 for controlling a movable object. The remote controller 600 includes a remote control host 610 and a display 620, one end of which is pivotally coupled to the remote control host 610. When the remote controller 600 is in use, the display 620 is pivoted from a closed state to an open state, and the angle between the display 620 and the remote control host 610 is an obtuse angle.

The display 620 includes a screen, a substrate that fixes the screen, and an antenna assembly mounted to the substrate.

Preferably, the antenna assembly in the display 620 is the antenna assembly 100, 400, 500 of the above embodiment. When the remote controller 600 is in use, the angle between the substrate 200, 200a of the antenna assembly 100, 400, 500 and the remote control host 610 is an obtuse angle, and the normal angle O of the display 620 and the horizontal plane are θ.

It can be understood that in some other embodiments, one end of the display 620 can be fixedly connected to the remote control host 610, and an angle between the display 620 and the remote control host 610 is an obtuse angle.

During the use of the remote controller 600, the display 620 will have a certain inclination angle with the horizontal plane in order to better view the display 620, and therefore, the maximum radiation direction of the antenna assembly 100, 400, 500 pattern. If the angle of inclination with respect to the normal direction of the display 620 is also θ, the maximum radiation direction of the antenna assembly 100, 400, 500 pattern may be directed to the horizontal direction and directed to the movable object controlled by the remote controller 600, such that The effects of the antenna assemblies 100, 400, 500 are optimal. In the present embodiment, the inclination angle θ is equal to 10 to 60 degrees.

In order to make the antenna assembly 100, 400, 500 upturn, there is a current phase difference α1 between the first radiating element 21 and the second radiating element 22, and the third radiating unit 23 and the fourth radiating unit 24 There is a current phase difference α2 between them, and the formula is as follows:

α=βd sinθ

Where α is the current phase difference between the radiating elements 20, β is the phase constant, and d is the distance between the radiating elements 20. In the present embodiment, β and θ remain unchanged, so the current phase difference α is proportional to the distance d between the radiating elements 20. The distance d1 of the first radiating element 21 and the second radiating element 22 is 80 mm, and the distance d2 between the third radiating element 23 and the fourth radiating element 24 is 55 mm. According to the formula, the direction can be calculated to be deflected. When the angle θ is fixed, the current phase difference between the two sets of radiating elements 20 needs to be maintained as α1 and α2, respectively.

The design process of the antenna assembly 100, 400, 500 is as follows:

1. Determining the sizes of the first, second, third, and fourth radiating elements 21, 22, 23, 24 such that the operating frequency of the antenna assembly is 2.45 GHz;

2, the width of the power split microstrip lines 32 ~ 36 is designed, so that the input power of the antenna assembly 100, 400, 500 is evenly distributed to the four of the radiating elements 20;

3. Adjusting the length of the third power split microstrip line 34 such that the current phases of the first radiating element 21 and the third radiation 23 are consistent;

4, adjusting the length distribution of the first power split microstrip line 32 and the second power split microstrip line 33, so that the first radiating element 21 and the second radiating element 22 maintain a current phase difference α1;

5. Adjusting the length distribution of the fourth power split microstrip line 35 and the fifth power split microstrip line 36 such that the third radiating element 23 and the fourth radiating element 24 maintain a current phase difference α2.

During the adjustment, it is noted that the current phases of the first radiating element 21 and the third radiating element 23 are always the same.

Preferably, the movable object is an Unmanned Aerial Vehicle (UAV).

In the embodiment of the present invention, the current phase difference α1 existing between the first radiating unit 21 and the second radiating unit 22 is such that the maximum radiation direction of the antenna assembly 100, 400, 500 is upturned, which is advantageous for the The antenna assembly 100, 400, 500 can achieve better use when in use. The antenna assembly 100, 400, 500 can be adjusted in a direction such that when the remote controller 600 is in use, the maximum radiation direction of the antenna assembly 100, 400, 500 can be directed to a horizontal direction and directed to the remote control. The movable object controlled by the device 600 is advantageous for the use effect of the antenna assembly 100, 400, 500.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; in the idea of the present invention, the technical features in the above embodiments or different embodiments may also be combined. The steps may be carried out in any order, and there are many other variations of the various aspects of the invention as described above, which are not provided in the details for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, It should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or equivalently substituted for some of the technical features; and the modifications or substitutions do not deviate from the embodiments of the present invention. The scope of the technical solution.

Claims (18)

1. An antenna assembly (100, 400, 500) for mounting on a substrate (200, 200a), the substrate (200, 200a) including a first surface (202, 202a) and a second surface (204, oppositely disposed) 204a), characterized in that the antenna assembly (100, 400, 500) comprises:

   a radiation unit (20), the radiation unit (20) is disposed on the first surface (202, 202a), and the radiation unit (20) includes at least first and second radiation units (21, 22), the a radiation unit (21) is spaced apart from the second radiation unit (22);

   a feeder (30), the feeder (30) includes a microstrip feeder (31), a first power split microstrip line (32), and a second power split microstrip line (33), the first power split microstrip line (32) connected between the microstrip feed line (31) and the first radiating element (21), the second power split microstrip line (33) is connected to the microstrip feed line (31) and Between the second radiating elements (22), the lengths of the first power split microstrip line (32) and the second power split microstrip line (33) are not equal;

   A first reference ground (41, 302), the first reference ground (302) is disposed on the second surface (204).
2. The antenna assembly (100, 400, 500) according to claim 1, characterized in that the first radiation unit (21) and the second radiation unit (22) receive input from the feed line (30) The power is equal.
3. The antenna assembly (400, 500) according to claim 1 or 2, characterized in that the antenna assembly (400, 500) further comprises a third radiating element (23) and a fourth radiating element (24) arranged at intervals ;

   The feeder (30) further includes a third power split microstrip line (34), a fourth power split microstrip line (35), and a fifth power split microstrip line (36), the third power split microstrip line The first end of (34) is connected to the microstrip feed line (31), and the second end of the third power sub-strip line (34) is respectively connected to the first of the fourth power split microstrip line (35) And a first end of the fifth power split microstrip line (36); a second end of the fourth power split microstrip line (35) is connected to the third radiating element (23), the fifth A second end of the power split microstrip line (36) is coupled to the fourth radiating element (24).
4. The antenna assembly (400, 500) of claim 3 wherein said fourth power split microstrip line (35) and said five power split microstrip line (36) are unequal in length.
5. Antenna assembly (400, 500) according to claim 3 or 4, characterized in that the third radiation unit (23) and the fourth radiation unit (24) receive input from the feed line (30) The power is equal.
6. The antenna assembly (400, 500) according to claim 5, characterized in that the input power obtained by the third radiating element (23) from the feed line (30) is equal to the first radiating element (21) The input power obtained by the feeder (30).
7. The antenna assembly (400, 500) according to any one of claims 3 to 6, wherein the length of the first power split microstrip line (32) is greater than the second power split microstrip line (33) a length of the fourth power split microstrip line (35) that is greater than a length of the fifth power split microstrip line (36), the first radiating element (21) and the third radiating element The current phase of (23) is the same.
8. The antenna assembly (100, 400, 500) according to any one of claims 1 to 7, wherein the antenna assembly (100, 400, 500) further comprises a coaxial line (50); the coaxial The wire (50) includes a bare inner core (52) and a bare outer core (54), the bare inner core (52) connecting the microstrip feed line (31), the bare outer core (54) electrically The first reference ground (41, 302) is connected.
9. The antenna assembly (100, 400) of claim 8 wherein said antenna assembly (100, 400) further comprises a second reference ground (42), said second reference ground (42) being disposed in said a first surface (202), the first reference ground (41) is electrically connected to the second reference ground (42); the bare outer core (54) is mounted on the second reference ground (42) ).
10. The antenna assembly (500) of claim 8 wherein said antenna assembly (500) further comprises a flexible circuit board (60), said flexible circuit board (60) comprising a first connection end (62) and a second connection end (64); the first connection end (62) is disposed on the first surface (202), and the first connection end (62) is connected to the bare line of the coaxial line (50) The outer core (54); the second connecting end (64) is disposed on the second surface (204), and the second connecting end (64) is connected to the first reference ground (302).
11. The antenna assembly (500) according to claim 8 or 10, wherein the antenna assembly (500) is disposed inside a wireless communication electronic device, and the substrate (200a) is for fixing the wireless communication electronic device The plastic plate of the display device.
12. The antenna assembly (100, 400, 500) according to any of the claims 1-11, characterized in that the antenna assembly (100, 400, 500) is a microstrip antenna.
13. A wireless communication electronic device, characterized in that the wireless communication electronic device comprises the antenna assembly (100, 400, 500) of any of claims 1-12.
14. The wireless communication electronic device of claim 13, wherein the wireless communication electronic device comprises a display device comprising a screen (300) and the substrate (200a); the first reference ground ( 302) is disposed on a back surface of the screen (300), and the substrate (200a) is an insulating board that fixes the screen (300).
15. A remote controller (600), comprising:

    Remote host (610), and

    a display (620), one end of the display (620) is pivotally connected to the remote control host (610);

    Wherein the display (620) comprises a screen, a substrate fixing the screen, and an antenna assembly mounted on the substrate;

    The antenna assembly is the antenna assembly (100, 400, 500) according to any one of claims 1 to 12.
16. The remote control (600) of claim 15 wherein the maximum radiation direction of the antenna assembly is at an angle to the normal (O) of the display (620).
17. A remote controller (600) according to claim 15 or 16, wherein said remote controller (600) is for controlling a movable object, said antenna assembly during use of said remote controller (600) The maximum radiation direction of (100, 400, 500) is directed to the movable object.
18. The remote controller (600) according to claim 17, wherein the movable object is an unmanned aerial vehicle.

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