CN109390677B - Antenna assembly, wireless communication electronic equipment with same and remote controller - Google Patents
Antenna assembly, wireless communication electronic equipment with same and remote controller Download PDFInfo
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- CN109390677B CN109390677B CN201710672676.9A CN201710672676A CN109390677B CN 109390677 B CN109390677 B CN 109390677B CN 201710672676 A CN201710672676 A CN 201710672676A CN 109390677 B CN109390677 B CN 109390677B
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- 238000004891 communication Methods 0.000 title claims abstract description 47
- 230000005855 radiation Effects 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 25
- 239000004033 plastic Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000206 photolithography Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
- H01Q1/2266—Supports; Mounting means by structural association with other equipment or articles used with computer equipment disposed inside the computer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
The invention relates to the field of communication, and provides an antenna assembly, wireless communication electronic equipment and a remote controller. The antenna assembly includes a radiating element, a feed line, and a first reference ground. The radiation unit is arranged on the first surface and comprises a first radiation unit and a second radiation unit which are arranged at intervals. The feeder line comprises a microstrip feeder line, a first power division microstrip line and a second power division microstrip line. The first power division microstrip line is connected between the microstrip feeder line and the first radiating unit, the second power division microstrip line is connected between the microstrip feeder line and the second radiating unit, and the lengths of the first power division microstrip line and the second power division microstrip line are unequal. The first reference ground is arranged on the second surface. The lengths of the first power division microstrip line and the second power division microstrip line are unequal, so that the maximum radiation direction of the antenna assembly is tilted upwards, and the use effect of the antenna assembly in the application of the wireless communication electronic equipment can be improved.
Description
[ Field of technology ]
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 Art ]
Antennas are an indispensable element in the communication industry, and in order to meet the miniaturization requirement of wireless communication electronic devices, antennas are continuously developed toward miniaturization. Microstrip antennas have the advantages of miniaturization, easy integration, good directivity, etc., and are widely used.
Microstrip antennas are typically disposed on a thin dielectric substrate, with a thin metal layer attached to one side as a ground plane and a shaped metal patch attached to the other side, and the patch is fed with a microstrip line or coaxial probe to form a complete microstrip antenna. Currently, the maximum radiation direction of a microstrip antenna is generally directed in the normal direction of a substrate on which the microstrip antenna is mounted, which may be a component on a wireless communication device, for example, a back plane of the wireless communication device. When the wireless communication device is used, the maximum radiation direction of the microstrip antenna arranged on the substrate cannot always be directly pointed to the direction of another device communicating with the wireless communication device due to the holding habit of a user, so that the pointing direction of the maximum gain of the microstrip antenna pattern cannot be utilized to the maximum extent, and the high gain of the microstrip antenna cannot be fully utilized, thereby the use effect of the microstrip antenna cannot reach the target of the expected design.
[ Invention ]
In order to solve the technical problems, the embodiment of the invention provides an antenna assembly with upward tilting in the maximum radiation direction and good use effect, and wireless communication electronic equipment and a remote controller with the antenna assembly.
In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:
An antenna assembly is used for being mounted on a substrate, and the substrate comprises a first surface and a second surface which are oppositely arranged. The antenna assembly includes: a radiating element, a feed line and a first reference ground. The radiation unit is arranged on the first surface and at least comprises a first radiation unit and a second radiation unit, and the first radiation unit and the second radiation unit are arranged at intervals. The feeder comprises a microstrip feeder, a first power division microstrip line and a second power division microstrip line, wherein the first power division microstrip line is connected between the microstrip feeder and the first radiating unit, the second power division microstrip line is connected between the microstrip feeder and the second radiating unit, and the lengths of the first power division microstrip line and the second power division microstrip line are unequal. The first reference ground is arranged on the second surface.
In some embodiments, the input power obtained by the first and second radiating elements from the feed line is equal.
In some embodiments, the antenna assembly further comprises third and fourth radiating elements disposed in spaced apart relation; the feeder line further comprises a third power division microstrip line, a fourth power division microstrip line and a fifth power division microstrip line, wherein the first end of the third power division microstrip line is connected with the microstrip feeder line, and the second end of the third power division microstrip line is respectively connected with the first end of the fourth power division microstrip line and the first end of the fifth power division microstrip line; the second end of the fourth power division microstrip line is connected with the third radiating element, and the second end of the fifth power division microstrip line is connected with the fourth radiating element.
In some embodiments, the fourth power splitting microstrip line and the fifth power splitting microstrip line are unequal in length.
In some embodiments, the input power obtained by the third radiating element and the fourth radiating element from the feed line is equal.
In some embodiments, the input power obtained by the third radiating element from the feeder line is equal to the input power obtained by the first radiating element from the feeder line.
In some embodiments, the length of the first power splitting microstrip is greater than the length of the second power splitting microstrip, the length of the fourth power splitting microstrip is greater than the length of the fifth power splitting microstrip, and the current phase of the first radiating element is the same as the current phase of the third radiating element.
In some embodiments, the antenna assembly further comprises a coaxial line; the coaxial line comprises an exposed inner core and an exposed outer core, the exposed inner core is connected with the microstrip feeder, and the exposed outer core is electrically connected with the first reference ground.
In some embodiments, the antenna assembly further comprises a second reference ground disposed on the first surface, the first reference ground being electrically connected to the second reference ground; the bare outer core is mounted to the second reference ground.
In some embodiments, the antenna assembly further comprises a flexible circuit board comprising a first connection end and a second connection end; the first connecting end is arranged on the first surface and is connected with the exposed outer core of the coaxial line; the second connecting end is arranged on the second surface and is connected with the first reference ground.
In some embodiments, the antenna assembly is disposed inside a wireless communication electronic device, and the substrate is 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 problems, the embodiment of the invention also provides the following technical scheme:
A wireless communication electronic device comprising an antenna assembly as described above.
In some embodiments, the wireless communication electronic device includes a display device including a screen and the substrate; the first reference ground is arranged on the back surface of the screen, and the substrate is an insulating plate for fixing the screen.
In order to solve the technical problems, the embodiment of the invention also provides the following technical scheme:
A remote controller comprising a remote control host and a display, one end of the display being pivotably connected to the remote control host, wherein the display comprises a screen, a substrate to which the screen is secured, and an antenna assembly mounted to the substrate; wherein the antenna assembly is the antenna assembly described above.
In some embodiments, the maximum radiation direction of the antenna assembly is at an oblique angle to the normal of 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 towards the movable object during use of the remote control.
In some embodiments, the movable object is an Unmanned aerial vehicle (un-managed AERIAL VEHICLE, UAV).
Compared with the prior art, the lengths of the first power division microstrip line and the second power division microstrip line in the embodiment of the invention are unequal, so that a current phase difference exists between the first radiating unit and the second radiating unit, the maximum radiating direction of the antenna assembly is tilted upwards, and the use effect of the antenna assembly in the application of the wireless communication electronic equipment can be improved.
[ Description of the drawings ]
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 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;
fig. 2 is a top view of the antenna assembly shown in fig. 1;
fig. 3 is an exploded view of the antenna assembly and the substrate shown in fig. 1;
Fig. 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;
Fig. 5 is a top view of the antenna assembly shown in fig. 4;
fig. 6 is an exploded 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, where the antenna assembly is mounted on a substrate of a wireless communication electronic device;
Fig. 8 is a side view schematic of the antenna assembly shown in fig. 7;
fig. 9 is a schematic top view of the antenna assembly shown in fig. 7;
Fig. 10 is an exploded view of the antenna assembly and the substrate shown in fig. 7;
fig. 11 is an S-parameter diagram of the antenna assembly shown in fig. 4-10;
Fig. 12 is an E-plane directional diagram of the antenna assembly shown in fig. 4-10 at 2.45GHz of radiation;
Fig. 13 is a schematic structural diagram of a wireless communication electronic device according to another embodiment of the present invention.
[ Detailed description ] of the invention
In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like are used in this specification for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, an antenna assembly 100 according to an embodiment of the 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 computer or other wireless communication electronic devices, such as a remote control of a unmanned aerial vehicle.
The substrate 200 is an insulating medium, for example, a glass fiber board, 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, and includes a radiating element 20, a feeder line 30, a grounding element 40, and a coaxial line 50. The radiating element 20 and the feeder line 30 are disposed on the first surface 202 of the substrate 200, the feeder line 30 is electrically connected to the radiating element 20, and the feeder line 30 and the ground element 40 are connected to a peripheral circuit through the coaxial line 50.
The number of the radiation units 20 is two, including: a first radiating element 21 and a second radiating element 22. Each radiating element 20 is a rectangular sheet of metal, 48mm x 43mm in size. The first radiating element 21 and the second radiating element 22 are aligned in a first direction.
The first radiating element 21 comprises two parallel arranged first sides 212 and two parallel arranged second sides 214. The second radiating element 22 includes two third sides 222 disposed in parallel and two fourth sides 224 disposed in parallel. One of the two first sides 212 is aligned with a corresponding one of the third sides 222, and the other of the two first sides 212 is aligned with the other corresponding one of the third sides 222. The second side 214 is disposed parallel to 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 element 21 and the center of the second radiating element 22 is d1, and in this embodiment, the distance between the first connection point 210 and the second connection point 220 is d1.
The radiation unit 20 may be formed on the first surface 202 of the substrate 200 by a photolithography method; or the radiation unit 20 is formed into a metal sheet and then fixed to the first surface 202 of the substrate 200.
It will be appreciated that in some other embodiments, the radiating elements 20 may vary in size, spacing, and placement from one another according to different needs; the radiating element 20 may take other shapes, such as circular, oval, annular, hexagonal, etc.; the number of the radiation units 20 may also be changed according to actual needs, as long as the radiation units 20 at least include the first radiation unit 21 and the second radiation unit 22, i.e., the number of the radiation units 20 may be at least two, for example, 3 or 4 radiation units.
The feed line 30 includes a microstrip feed line 31, a first power division microstrip line 32, and a second power division microstrip line 33. As shown in fig. 1, the microstrip feed line 31 is linear, and the first power division microstrip line 32 and the second power division microstrip line 33 are "L" shaped. It should be understood that in other implementations, the microstrip feed line 31, the first power splitting microstrip line 32, and the second power splitting microstrip line 33 may take other forms. The first power splitting microstrip line 32 is connected between the microstrip feed line 31 and the first connection point 210 of the first radiating element 21, and the second power splitting microstrip line 33 is connected between the microstrip feed line 31 and the second connection point 220 of the second radiating element 22.
The length of the first power splitting microstrip line 32 is not equal to the length of the second power splitting microstrip line 33. For the embodiment shown in fig. 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, and the length of the second power split microstrip line 33 refers to the sum of the lengths of the two sides of the "L" type second power split microstrip line 33. In this embodiment, the length of the first power splitting microstrip line 32 is greater than the length of the second power splitting microstrip line 33.
The feed line 30 may be formed on the first surface 202 of the substrate 200 by a photolithography method; or the radiation unit 20 is formed into a metal sheet or wire and then fixed on the first surface 202 of the substrate 200. It will be appreciated that in some other embodiments, the feeder 30 is not limited to a metal sheet or wire, and is not limited to being disposed on the first surface 202, and may vary accordingly for different feeding modes.
The ground element 40 comprises 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 sheet, and the second reference ground 42 may be formed on the first surface 202 of the substrate 200 by a photolithography method; or the second reference ground 42 may be formed as a metal sheet and then secured to the first surface 202 of the substrate 200. It will be appreciated that in some other embodiments, the second reference ground 42 may be a metal block or other electrical conductor.
The first reference ground 41 is a metal plate having a cross-sectional area equal to that of the second surface 204. It will be appreciated that in some other embodiments, other metallic devices within the wireless communication electronics may be used as the reference ground for the antenna assembly 100.
The substrate 200 is provided with a via 206, and the position of the via 206 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 will be appreciated that in some other embodiments, the via 206 may be omitted and the second reference ground 42 may be electrically connected to the first reference ground 41 by other means, such as by using wires or other conductive material to electrically connect the second reference ground 42 to the first reference ground 41.
The transparent film insulation layer 56, the braid and the outer cover are stripped off from one end of the coaxial line 50 to obtain a bare inner core 52 and a bare outer core 54, and the transparent film insulation layer 56 is disposed between the inner core 52 and the outer core 54. The bare inner core 52 is soldered to the end of the microstrip feed line 31 remote from the radiating element 20, and the bare outer core 54 is soldered to the second reference ground 42.
The coaxial line 50 feeds the antenna assembly 100 via a 50 ohm microstrip feed line 31. Then, the first power splitting microstrip line 32 and the second power splitting microstrip line 33 are utilized to realize power distribution, and the impedance is 100 ohms.
It will be appreciated that in some other embodiments, the microstrip feed line 31 may be electrically connected to the peripheral circuit by other metal connectors, such as metal wires, or by other connection means. Likewise, 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 other connection means.
The overall size of the antenna assembly 100 is 170×130mm 2, i.e. the size of the substrate 200 is 170×130mm 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 gain of the antenna assembly 100. In this embodiment, the size of the radiating element 20 is 48mm×43mm, and the antenna assembly 100 may satisfy coverage of the 2.45GHz band, it is understood that in some other embodiments, the radiating element 20 may be different sizes to satisfy applications of different frequency bands, for example, the size of the radiating element 20 may be 20mm×20mm, and the antenna assembly 100 may satisfy coverage of the 5.8GHz band; in addition, the size of the radiating element 20 is not necessarily limited to 48mmm×43mm even if the antenna assembly 100 operates in the frequency band of about 2.45 GHz.
The length of the first power splitting microstrip line 32 is not equal to the length of the second power splitting microstrip line 33, so that a current phase difference α1 between the first radiating element 21 and the second radiating element 22 causes the antenna assembly 100 to tilt upwards in the maximum radiation direction, which is beneficial for achieving a better use effect of the antenna assembly 100 when in use.
Referring to fig. 4 to 6, an antenna assembly 400 according to another embodiment of the present invention is substantially the same as the antenna assembly 100 according to the above embodiment, except that: in the antenna assembly 400 of the present embodiment, the radiation unit 20 further includes a third radiation unit 23 and a fourth radiation unit 24; the feeder line 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 line type with a plurality of 90 degree bends, and the fourth power split microstrip line 35 and the fifth power split microstrip line 36 are "L" shaped. It should be understood that in other implementations, the line shapes of the third power splitting microstrip 34, the fourth power splitting microstrip 35, and the fifth power splitting microstrip 36 may take other forms.
The third radiating element 23 and the fourth radiating element 24 are also rectangular metal sheets, with dimensions 48mm x 43mm. The third and fourth radiating elements 23, 24 are also aligned along the first direction, and the first and third radiating elements 21, 23 are aligned along a second direction, which is perpendicular to the second direction.
The third radiating element 23 comprises two parallel arranged fifth sides 232 and two parallel arranged sixth sides 234. The fourth radiating element 24 includes two seventh sides 242 disposed in parallel and two eighth sides 244 disposed in parallel. One of the two fifth sides 232 is aligned with one corresponding seventh side 242 and the other of the two fifth sides 232 is aligned with the other corresponding seventh side 242. 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, i.e. the distance between the center of the third radiating element 23 and the center of the fourth radiating element 24 is d2, and in this embodiment, the distance between the third connection point 230 and the fourth connection point 240 is d2. It is understood that d1 and d2 may be equal or unequal, and those skilled in the art may determine according to actual needs.
The first end of the third power division microstrip line 34 is connected to the microstrip feeder 31, and the second end of the third power division microstrip line 34 is connected to the first end of the fourth power division microstrip line 35 and the first end of the fifth power division microstrip line 36, respectively; a second end of the fourth power splitting microstrip line 35 is connected to the third connection point 230 of the third radiating element 23, and a second end of the fifth power splitting microstrip line 36 is connected to the fourth connection point 240 of the fourth radiating element 24. The length of the fourth power division microstrip line 35 is not equal to the length of the fifth power division microstrip line 36. For the embodiment shown in fig. 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 "L" fourth power split microstrip 35, and the length of the fifth power split microstrip line 36 refers to the sum of the lengths of the two sides of the "L" fifth power split microstrip line 36. In this embodiment, the length of the fourth power division microstrip line 35 is greater than the length of the fifth power division microstrip line 36.
The coaxial line 50 feeds the antenna assembly 400 via a50 ohm microstrip feed line 31. Then, by using the third power splitting microstrip line 34, the first power splitting microstrip line 32 and the second power splitting microstrip line 33 realize power distribution, and the impedances of the power distribution are respectively 100 ohms, 200 ohms and 200 ohms, and the power distribution ratio is 2:1:1. finally, the fourth power division microstrip line 35 and the fifth power division microstrip line 36 divide the input power of the third power division microstrip line 34 equally, and the impedance is 200 ohms. Thus, the first, second, third and fourth radiating elements 21, 22, 23, 24 are of equal input power.
The length of the first power splitting microstrip line 32 is not equal to the length of the second power splitting microstrip line 33, so that a current phase difference α1 exists between the first radiating element 21 and the second radiating element 22, and the length of the fourth power splitting microstrip line 35 is not equal to the length of the fifth power splitting microstrip line 36, so that a current phase difference α2 exists between the third radiating element 23 and the fourth radiating element 24. The first radiating element 21 and the third radiating element 23 should be kept in the same phase, i.e. the phase difference is 0 or an integer multiple of 360 degrees, and to meet this condition, the length difference between the first microstrip feed line 32 connecting the first radiating element 21 and the third and fourth microstrip feed lines 34, 35 connecting the third radiating element 23 needs to be designed so that the phase difference satisfies the above condition.
The current phase difference α1 between the first radiating element 21 and the second radiating element 22, and the current phase difference α2 between the third radiating element 23 and the fourth radiating element 22 make the maximum radiating direction of the antenna assembly 400 upwarp, which is beneficial for the antenna assembly 400 to achieve better use effect when in use.
Referring to fig. 7 to 9, an antenna assembly 500 according to another embodiment of the present invention is substantially the same as the antenna assembly 400 according to the above embodiment, except that: the antenna assembly 500 is installed inside a wireless communication electronic device having a display device including a screen 300 and a substrate 200a, wherein a metal member 302 is disposed on the back of the screen 300, and the metal member 302 is used 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, and is used for fixing or reinforcing the screen 300, and particularly when the screen 300 is larger, the rigidity is smaller, and the substrate 200a is generally disposed to fix the screen 300.
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 200 a.
It will be appreciated that in some other embodiments, the substrate 200a may be any other insulating component internal to the wireless communication electronic device, such as a front shell, a rear shell, etc. of the wireless communication electronic device housing the screen 300.
In this embodiment, the metal member 302 disposed on the back of the screen 300 is a metal plate, which is a shielding plate for shielding the screen 300, and in order to prevent the screen 300 of the display device from being interfered by other electronic components in the wireless communication electronic device, such a shielding plate is generally disposed for shielding and protecting the screen 300. The antenna assembly 500 uses a shield plate that is naturally provided 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 will be appreciated that in other embodiments of the present invention, other metallic devices within the wireless communication electronics may be used as the reference ground for the antenna assembly 500.
In this 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 grounding element 40 in the embodiment shown in fig. 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 peripheral circuits 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, the flexible circuit board 60 is bent and is close to an end surface 206a of the substrate 200 a. The flexible circuit board 60 includes a first connection end 62 and a second connection end 64. The first connection end 62 is disposed on the first surface 202a, the first connection end 62 is spaced apart from the microstrip feeder 31 by a predetermined distance, and the exposed outer core 54 of the coaxial line 50 is welded to the first connection end 62. The second connection end 64 is disposed on the second surface 204a and electrically connected to the metal member 302.
In this embodiment, the overall dimension of the antenna assembly 500 is 135×130mm 2, that is, the distance L1 between the seventh side 242 of the fourth radiating element 24 away from the flexible circuit board 60 and the end face 206a near the flexible circuit board 60 is 135mm, and the distance L2 between the second side 214 of the first radiating element 21 away from the second radiating element 22 and the fourth side 224 of the second radiating element 22 away from the first radiating element 21 is 130mm.
The antenna assembly 500 according to the embodiment of the present invention uses the substrate 200a of the wireless communication electronic device as a medium to carry the radiating element 20, instead of using an insulating medium (e.g., rogers plate) as an antenna assembly in the prior art, so that the space occupied by the antenna assembly 500 is reduced. Compared with the antenna assembly with the same size in the prior art, the rogers plate is omitted, and the components for fixing or reinforcing the display device, which are originally provided in the wireless communication electronic equipment, are utilized as the medium of the antenna assembly 500, so that the antenna assembly 500 in the embodiment of the invention only has one very thin patch of the radiating unit 20 and the feeder line 30, the selling price is only ten yuan, and the cost of the antenna assembly 500 is saved. The thicker substrate 200a also increases the bandwidth of the antenna assembly 500.
In addition, the antenna assembly 500 of the embodiment of the invention uses the back metal piece 302 of the screen 300 of the display device as the reference ground of the antenna assembly 500, so that the space of the antenna assembly 500 is saved, and the performance of the antenna assembly 500 is stable, the directivity is stronger, and the high gain of the antenna assembly 500 is realized due to the larger metal piece 302 serving as the reference ground.
Referring to fig. 11, the antenna assembly 400, 500 according to the embodiment of the present invention can operate at 2.34 GHz-2.62 GHz, and the bandwidth is 280MHz, so as to satisfy the coverage of the conventional 2.45GHz band.
Referring to fig. 12, which is an E-plane directional diagram of radiation of the antenna assembly 400, 500 at 2.45GHz according to an embodiment of the present invention, as can be seen from fig. 12, the antenna assembly 400, 500 is a directional antenna, the maximum radiation direction is tilted up by 15 degrees, the gain can reach 10.5dBi, and the 3dB bandwidth of the pitching plane can reach 45 degrees. The antenna assemblies 400, 500 have the advantage of better use effect due to the upward tilting of the patterns. Particularly, when the antenna assembly 400, 500 is mounted on a wireless communication electronic device with a display device, such as a mobile phone, a tablet computer, or a remote controller with a display device, the screen 300 of the display device is inclined at a certain angle to the horizontal plane during the use of the wireless communication electronic device, and the pattern of the antenna assembly 400, 500 is tilted upward, so that the maximum radiation direction of the antenna assembly 400, 500 can still point to the horizontal plane, and the use effect of the antenna assembly 400, 500 can be optimized.
Still another embodiment of the present invention provides a wireless communication electronic device that includes a display device. The wireless communication electronic equipment can be a mobile phone, a tablet personal computer, a remote controller and the like. Taking the wireless communication electronic equipment as a remote controller and using the remote controller to operate the unmanned aerial vehicle as an example for explanation: in general, the flight distance of the unmanned aerial vehicle (i.e., the horizontal distance between the unmanned aerial vehicle and the location point where the user is located, i.e., the horizontal distance between the remote controller and the unmanned aerial vehicle) is far greater than the flight height of the unmanned aerial vehicle (i.e., the distance between the unmanned aerial vehicle and the ground projection point thereof), for example, when the unmanned aerial vehicle flies 2km away and 120m high, since the flight distance of the unmanned aerial vehicle 2km is far greater than the flight height of 120m, the remote controller and the unmanned aerial vehicle can be approximately considered to be on the same horizontal plane. Under the situation, if the antenna on the remote controller is designed to ensure that the maximum radiation direction of the antenna points to the horizontal direction, namely, points to the unmanned aerial vehicle direction in the using process of the remote controller, the high gain of the antenna can be fully utilized, so that the using effect of the antenna is optimal.
Because the display device of the wireless communication electronic device is inclined at a certain angle with the horizontal plane in the process of using the wireless communication electronic device by a user, the antenna assembly of the embodiment of the invention is applied to the wireless electronic device due to the consideration, and the high gain of the antenna can be fully utilized, so that the use of the antenna achieves the optimal effect.
The technical features of the wireless communication electronic device of the present embodiment will be described below using a remote controller as an example.
Referring to fig. 13, an embodiment of the present invention provides a remote control 600 for controlling a movable object. The remote controller 600 includes a remote control host 610 and a display 620, and one end of the display 620 is pivotably connected to the remote control host 610. In use, the remote control 600 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 to which the screen is fixed, 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. In use, the angle between the base plate 200, 200a of the antenna assembly 100, 400, 500 and the remote control host 610 is an obtuse angle, and the normal O of the display 620 is a horizontal angle θ.
It will be appreciated that in some other embodiments, one end of the display 620 may be fixedly connected to the remote control host 610, and the angle between the display 620 and the remote control host 610 may be an obtuse angle.
In the process of using the remote control 600, the display 620 may have a certain inclination angle with respect to the horizontal so as to facilitate better viewing of the display 620, and therefore, if the maximum radiation direction of the antenna assembly 100, 400, 500 is also at an inclination angle θ with respect to the normal direction of the display 620, the maximum radiation direction of the antenna assembly 100, 400, 500 may be directed in the horizontal direction and directed toward the movable object controlled by the remote control 600, so that the effect of the antenna assembly 100, 400, 500 may be optimized. In this embodiment, the inclination angle θ is equal to 10 to 60 degrees.
In order to tilt up the antenna assembly 100, 400, 500, a current phase difference α1 exists between the first radiating element 21 and the second radiating element 22, and a current phase difference α2 exists between the third radiating element 23 and the fourth radiating element 24, and the calculation formula is as follows:
α＝βdsinθ
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 this 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=80 mm between the first radiating element 21 and the second radiating element 22, and the distance d2=55 mm between the third radiating element 23 and the fourth radiating element 24, and according to the formula, the current phase difference that needs to be maintained by the two sets of radiating elements 20 when the directional diagram is deflected by a certain fixed angle θ can be calculated as α1 and α2.
The antenna assembly 100, 400, 500 is designed as follows:
1. The first, second, third and fourth radiating elements 21, 22, 23, 24 are dimensioned such that the operating frequency of the antenna assembly is 2.45GHz;
2. The widths of the power dividing microstrip lines 32 to 36 are designed such that the input power of the antenna assembly 100, 400, 500 is equally divided into 4 of the radiating elements 20;
3. adjusting the length of the third power division microstrip line 34 so that the current phases of the first radiation unit 21 and the third radiation unit 23 are kept consistent;
4. Adjusting the length distribution of the first power division microstrip line 32 and the second power division microstrip line 33 so that the first radiation unit 21 and the second radiation unit 22 maintain a current phase difference α1;
5. The length distributions of the fourth power split microstrip line 35 and the fifth power split microstrip line 36 are adjusted so that the third radiating element 23 and the fourth radiating element 24 maintain the current phase difference α2.
Note that the current phase of the first radiating element 21 and the third radiating element 23 is always the same during the adjustment.
Preferably, the movable object is an Unmanned aerial vehicle (un-managed AERIAL VEHICLE, UAV).
In the embodiment of the present invention, the current phase difference α1 between the first radiating element 21 and the second radiating element 22 makes the antenna assembly 100, 400, 500 tilt upwards in the maximum radiation direction, which is beneficial for the antenna assembly 100, 400, 500 to achieve a better use effect when in use. The direction of the antenna assembly 100, 400, 500 may be adjusted to be tilted upwards, so that when the remote controller 600 is used, the maximum radiation direction of the antenna assembly 100, 400, 500 may be directed in a horizontal direction and may be directed towards a movable object controlled by the remote controller 600, which is beneficial for optimizing the use effect of the antenna assembly 100, 400, 500.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (17)
1. An antenna assembly (100, 400, 500) for mounting to a substrate (200, 200 a), the substrate (200, 200 a) comprising a first surface (202, 202 a) and a second surface (204, 204 a) arranged opposite each other, characterized in that the antenna assembly (100, 400, 500) comprises:
The radiation unit (20), the radiation unit (20) is arranged on the first surface (202, 202 a), the radiation unit is a rectangular metal sheet, the radiation unit (20) at least comprises a first radiation unit and a second radiation unit (21, 22), and the first radiation unit (21) and the second radiation unit (22) are arranged at intervals;
The feeder line (30), the feeder line (30) comprises a microstrip feeder line (31), a first power division microstrip line (32) and a second power division microstrip line (33), the first power division microstrip line (32) is connected between the microstrip feeder line (31) and the first radiation unit (21), the second power division microstrip line (33) is connected between the microstrip feeder line (31) and the second radiation unit (22), and the lengths of the first power division microstrip line (32) and the second power division microstrip line (33) are unequal; and
-A first reference ground (41, 302), said first reference ground (302) being provided to said second surface (204), said first reference ground being a metal plate having a cross-sectional area equal to the cross-sectional area of said second surface;
The first radiation unit comprises two first side edges arranged in parallel and two second side edges arranged in parallel, the second radiation unit comprises two third side edges arranged in parallel and two fourth side edges arranged in parallel, one of the two first side edges is aligned with one corresponding third side edge, the other of the two first side edges is aligned with the other corresponding third side edge, and the second side edge is arranged in parallel with the fourth side edge;
The antenna assembly (100, 400, 500) further comprises a coaxial line (50); the coaxial line (50) comprises an exposed inner core (52) and an exposed outer core (54), the exposed inner core (52) being connected to the microstrip feed line (31), the exposed outer core (54) being electrically connected to the first reference ground (41, 302).
2. The antenna assembly (100, 400, 500) of claim 1, wherein the input power obtained from the feed line (30) by the first radiating element (21) and the second radiating element (22) are equal.
3. The antenna assembly (400, 500) according to claim 1 or 2, wherein the antenna assembly (400, 500) further comprises third (23) and fourth (24) radiating elements arranged at intervals;
The feeder line (30) further comprises a third power division microstrip line (34), a fourth power division microstrip line (35) and a fifth power division microstrip line (36), wherein a first end of the third power division microstrip line (34) is connected with the microstrip feeder line (31), and a second end of the third power division microstrip line (34) is respectively connected with a first end of the fourth power division microstrip line (35) and a first end of the fifth power division microstrip line (36); the second end of the fourth power division microstrip line (35) is connected with the third radiating unit (23), and the second end of the fifth power division microstrip line (36) is connected with the fourth radiating unit (24).
4. An antenna assembly (400, 500) according to claim 3, characterized in that the fourth power split microstrip line (35) is not equal in length to the fifth power split microstrip line (36).
5. The antenna assembly (400, 500) of claim 4, wherein the input power obtained from the feed line (30) by the third radiating element (23) and the fourth radiating element (24) are equal.
6. The antenna assembly (400, 500) of claim 5, wherein the input power obtained by the third radiating element (23) from the feed line (30) is equal to the input power obtained by the first radiating element (21) from the feed line (30).
7. The antenna assembly (400, 500) according to any of claims 4 to 6, wherein the length of the first power splitting microstrip line (32) is greater than the length of the second power splitting microstrip line (33), the length of the fourth power splitting microstrip line (35) is greater than the length of the fifth power splitting microstrip line (36), and the current phase of the first radiating element (21) is the same as the current phase of the third radiating element (23).
8. The antenna assembly (100, 400) of claim 1, wherein the antenna assembly (100, 400) further comprises a second reference ground (42), the second reference ground (42) being disposed on the first surface (202), the first reference ground (41) being electrically connected to the second reference ground (42); the bare outer core (54) is mounted to the second reference ground (42).
9. The antenna assembly (500) of claim 1, wherein the antenna assembly (500) further comprises a flexible circuit board (60), the flexible circuit board (60) comprising a first connection end (62) and a second connection end (64); the first connecting end (62) is arranged on the first surface (202), and the first connecting end (62) is connected with the exposed outer core (54) of the coaxial line (50); the second connection end (64) is arranged on the second surface (204), and the second connection end (64) is connected with the first reference ground (302).
10. The antenna assembly (500) of claim 8 or 9, wherein the antenna assembly (500) is arranged inside a wireless communication electronic device, and the substrate (200 a) is a plastic plate for fixing a display device of the wireless communication electronic device.
11. The antenna assembly (100, 400, 500) according to claim 1 or 2, wherein the antenna assembly (100, 400, 500) is a microstrip antenna.
12. A wireless communication electronic device, characterized in that it comprises the antenna assembly (100, 400, 500) of any of claims 1-11.
13. The wireless communication electronic device of claim 12, wherein the wireless communication electronic device comprises a display device comprising a screen (300) and the substrate (200 a); the first reference ground (302) is arranged on the back surface of the screen (300), and the substrate (200 a) is an insulating plate for fixing the screen (300).
14. A remote control (600), comprising:
A remote control host (610), and
A display (620), one end of the display (620) being pivotably connected to the remote control host (610);
Wherein the display (620) includes a screen, a substrate to which the screen is fixed, and an antenna assembly mounted to the substrate;
Wherein the antenna assembly is the antenna assembly (100, 400, 500) of any of claims 1 to 11.
15. The remote control (600) of claim 14, wherein the maximum radiation direction of the antenna assembly is at an inclination angle to a normal (O) of the display (620).
16. The remote control (600) according to claim 14 or 15, wherein the remote control (600) is adapted to control a movable object, towards which the maximum radiation direction of the antenna assembly (100, 400, 500) is directed during use of the remote control (600).
17. The remote control (600) of claim 16, wherein the movable object is an Unmanned aerial vehicle (un-manied AERIAL VEHICLE, UAV).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710672676.9A CN109390677B (en) | 2017-08-08 | 2017-08-08 | Antenna assembly, wireless communication electronic equipment with same and remote controller |
| PCT/CN2018/084077 WO2019029189A1 (en) | 2017-08-08 | 2018-04-23 | Antenna assembly and wireless communication electronic device having the antenna assembly, and remote controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710672676.9A CN109390677B (en) | 2017-08-08 | 2017-08-08 | Antenna assembly, wireless communication electronic equipment with same and remote controller |
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| CN109390677A CN109390677A (en) | 2019-02-26 |
| CN109390677B true CN109390677B (en) | 2024-06-07 |
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| CN111585013B (en) * | 2020-06-18 | 2024-06-04 | 常州柯特瓦电子股份有限公司 | Vehicle-mounted full-band 5G antenna and application thereof |
| KR20220080544A (en) * | 2020-12-07 | 2022-06-14 | 삼성전자주식회사 | Electronic device comprising antenna and method for manufacturing thereof |
| WO2023178562A1 (en) * | 2022-03-23 | 2023-09-28 | 深圳市大疆创新科技有限公司 | Remote controller of unmanned aerial vehicle and unmanned aerial vehicle system |
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| WO2019029189A1 (en) | 2019-02-14 |
| CN109390677A (en) | 2019-02-26 |
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