CN112332074B - Bluetooth antenna structure and touch control pen with same - Google Patents
Bluetooth antenna structure and touch control pen with same Download PDFInfo
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- CN112332074B CN112332074B CN202011194506.2A CN202011194506A CN112332074B CN 112332074 B CN112332074 B CN 112332074B CN 202011194506 A CN202011194506 A CN 202011194506A CN 112332074 B CN112332074 B CN 112332074B
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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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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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
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Abstract
The present disclosure relates to a bluetooth antenna structure and a stylus pen having the same. The Bluetooth antenna structure comprises a substrate and an antenna module. The antenna module is arranged on the substrate. The first radiator has a first length along a first direction. The second radiator has a second length along the first direction, and the second radiators are arranged at intervals on the first radiator along the second direction. The second direction is perpendicular to the first direction. The plurality of third radiators are arranged at intervals along the second direction and correspond to the first radiators. The first connecting piece is arranged between the first radiating body and the second radiating body. The second connecting piece is arranged between the first radiator and a third radiator of the adjacent first radiator. The plurality of third connecting pieces are arranged between the third radiating bodies at intervals along the second direction. The first radiator, the third radiator, the second connector and the third connector form a resonant path. Thereby, the bluetooth band is generated through the resonance path.
Description
Technical Field
The present disclosure relates to touch pen apparatuses, and particularly to a touch pen apparatus having a bluetooth antenna structure.
Background
With the progress and development of science and technology, a touch panel is used as an operation interface in various electronic devices on the market, so that a touch pen is changed day by day. Existing touch pens can be divided into active and passive types. The active stylus usually has a battery and a signal transmitting circuit, and the touch panel receives the signal and then determines the coordinates of the position contacted by the active stylus.
In recent years, active touch pens with bluetooth technology can feed more information back to the touch device and can be used to improve the pressure effect and prevent the palm from touching the panel by mistake. Due to the fact that the slender structure of the touch control pen is covered with the metal shell of the pen body, the difficulty of applying the Bluetooth antenna is increased. In general, the antenna structure of the bluetooth stylus needs to remove part of metal as a clearance area for antenna radiation, otherwise, the antenna efficiency is reduced due to the shielding of metal. If the redundant clearance area needs to be vacated, the volume of the bluetooth touch pen is additionally increased.
Due to the limitation of the physical size of the antenna, the antenna often needs a certain space to achieve the high gain characteristic. With the existing products being miniaturized, end customers desire to be able to further reduce the antenna size.
In view of the above, how to reduce the overall volume and maintain good antenna performance for the problems of the bluetooth touch pen is really an invaluable expectation of the people, and is also an objective and direction for the related manufacturers to make efforts to develop and break through.
Disclosure of Invention
Therefore, the present invention provides a bluetooth antenna structure and a stylus pen having the same, wherein the bluetooth antenna structure of the present invention is different from the prior art in that the bluetooth antenna structure forms a planar resonant path by a Flexible Printed Circuit (FPC) routing manner, so as to generate a bluetooth frequency band, and enhance an antenna radiation effect by a current coupled to a pen body, thereby achieving the effects of small antenna size, high antenna efficiency, omnidirectional radiation and low manufacturing complexity.
According to an aspect of the present invention, a bluetooth antenna structure is provided, which includes a substrate and an antenna module. The antenna module is arranged on the substrate and comprises a first radiating body, a second radiating body, a plurality of third radiating bodies, a first connecting piece, a second connecting piece and a plurality of third connecting pieces. The first radiator has a first length along a first direction. The second radiators are arranged at intervals on the first radiators along the second direction. The second direction is perpendicular to the first direction. In addition, each third radiator has a third length along the first direction, and the third radiators are arranged at intervals along the second direction and correspond to the first radiators. In addition, the first connecting piece is arranged between the first radiator and the second radiator. The second connector is disposed between the first radiator and one of the third radiators adjacent to the first radiator. The third connecting members are arranged among the third radiators at intervals along the second direction. The first length is greater than the second length, and the first radiator, the third radiators, the second connecting pieces and the third connecting pieces form a resonance path.
Therefore, the Bluetooth antenna structure is connected with the first radiator and the third radiators on the substrate through the second connecting pieces and the third connecting pieces, so that a resonance path is formed to generate a required Bluetooth frequency band, and the effects of small size, high antenna efficiency, omnidirectional radiation and low manufacturing complexity of the antenna can be achieved.
According to the bluetooth antenna structure of the embodiment described in the previous paragraph, the substrate and the antenna module are a circuit board substrate and a metal circuit of the flexible printed circuit board, respectively.
The bluetooth antenna structure according to the embodiment of the previous paragraph, wherein the first radiator includes a feed point, and the second radiator includes a ground point. The feed-in point and the grounding point are respectively positioned at one end of the first radiator and one end of the second radiator, and the end of the first radiator and the end of the second radiator are opposite to each other.
The bluetooth antenna structure according to the embodiment described in the previous paragraph, wherein the first connecting element is connected to the other end of the second radiator. The second connecting piece is connected with the other end of the first radiator. And one third connecting piece is connected to one end of the other third radiator and is adjacent to the first connecting piece relative to the second connecting piece and the other third connecting piece. The other third connecting member is connected to the other end of the other third radiator.
The bluetooth antenna structure according to the embodiment described in the previous paragraph, wherein the antenna module covers an operating frequency band. The operation frequency band is adjusted between 2.4GHz and 2.48GHz according to the resonance path.
The bluetooth antenna structure according to the foregoing embodiment, wherein the second radiator is disposed opposite to the one of the third radiators along the first direction.
The bluetooth antenna structure according to the foregoing embodiment, wherein the second radiator is disposed opposite to one of the third radiators, and a groove is disposed between the second radiator and the one of the third radiators.
According to another aspect of the present invention, a touch pen with a bluetooth antenna structure is provided, which includes a pen barrel and a bluetooth antenna structure. The pen tube is provided with an accommodating space. The Bluetooth antenna structure is arranged in the accommodating space and comprises a substrate and an antenna module. The antenna module is arranged on the substrate and comprises a first radiating body, a second radiating body, a plurality of third radiating bodies, a first connecting piece, a second connecting piece and a plurality of third connecting pieces. The first radiator has a first length along a first direction. The second radiator has a second length along the first direction, and the second radiators are arranged at intervals on the first radiator along the second direction. The second direction is perpendicular to the first direction. In addition, each third radiator has a third length along the first direction, and the third radiators are arranged at intervals along the second direction and correspond to the first radiators. In addition, the first connecting piece is arranged between the first radiator and the second radiator. The second connecting piece is arranged between the first radiator and one of the third radiators adjacent to the first radiator. The third connecting members are arranged among the third radiators at intervals along the second direction. The first length is greater than the second length, and the first radiator, the third radiators, the second connector and the third connectors form a resonant path.
Therefore, the touch control pen with the Bluetooth antenna structure utilizes the resonance path of the Bluetooth antenna structure to generate the Bluetooth frequency band, thereby not only feeding more information back to a panel, a mobile phone or other touch control devices, but also achieving the effects of small antenna size, high antenna efficiency, omnidirectional radiation and low manufacturing complexity.
The stylus pen with a bluetooth antenna structure according to the embodiment of the present disclosure further includes a pen body and a charging tray set. The pen body is arranged in the accommodating space, and a battery pack is arranged at one end of the pen body. The charging tray set is connected with the Bluetooth antenna structure and comprises a shell, a rear cover and a charging tray. The shell group is arranged on the pen tube. The rear cover is assembled on the shell and the pen tube. The pen tube, the shell and the rear cover form the accommodating space. The charging tray is arranged in the accommodating space and connected with the base material.
The stylus pen with a bluetooth antenna structure according to the embodiment of the previous paragraph further includes a plurality of metal wires. The metal wires are arranged on the substrate and are arranged at intervals along the second direction and are adjacent to the other third radiator, and the metal wires are electrically connected with the battery pack and the charging tray.
According to the stylus pen with the bluetooth antenna structure in the foregoing embodiment, the substrate and the antenna module are a circuit board substrate and a metal circuit of the flexible printed circuit board, respectively.
The stylus pen with a bluetooth antenna structure according to the foregoing embodiment, wherein the first radiator includes a feeding point, and the second radiator includes a grounding point. The feed-in point and the grounding point are respectively positioned at one end of the first radiator and one end of the second radiator, and the end of the first radiator and the end of the second radiator are opposite to each other.
The stylus pen with the bluetooth antenna structure according to the embodiment of the previous paragraph, wherein the first connecting element is connected to the other end of the second radiator. The second connecting piece is connected with the other end of the first radiator. And one third connecting piece is connected to one end of the other third radiator and is adjacent to the first connecting piece relative to the second connecting piece and the other third connecting piece. The other third connecting member is connected to the other end of the other third radiator.
The stylus pen with bluetooth antenna structure according to the embodiment of the previous paragraph, wherein the antenna module covers an operating frequency band. The operation frequency band is adjusted between 2.4GHz and 2.48GHz according to the resonance path.
The stylus pen with the bluetooth antenna structure according to the embodiment of the present disclosure, wherein the second radiator is disposed opposite to the one of the third radiators along the first direction.
The stylus pen with a bluetooth antenna structure according to the embodiment of the present disclosure, wherein a groove is formed between the second radiator and one of the third radiators.
Drawings
FIG. 1 shows a schematic diagram of a Bluetooth antenna configuration in accordance with one embodiment of the invention;
fig. 2 is a schematic perspective view illustrating a stylus pen having a bluetooth antenna structure according to another embodiment of the invention;
FIG. 3 shows an exploded view of a stylus with a Bluetooth antenna structure according to FIG. 2;
fig. 4 is a schematic diagram illustrating a substrate, an antenna module and a metal wire of the stylus pen with the bluetooth antenna structure according to fig. 2;
FIG. 5 shows a perspective view of a stylus with a Bluetooth antenna structure according to FIG. 2;
FIG. 6 shows a schematic diagram of the measurement of S11 parameters of a stylus with a Bluetooth antenna structure according to FIG. 2; and
fig. 7 shows a smith chart of a bluetooth antenna structure of a stylus pen with a bluetooth antenna structure according to fig. 2.
Wherein the reference numerals are as follows:
100, 300: bluetooth antenna structure
110, 310: base material
120, 320: antenna module
121, 321: first radiator
122, 322: second radiator
123a,123b,123c,323a,323b,323c: third radiator
130, 330: groove
200: touch control pen with Bluetooth antenna structure
210: pen tube
212: containing space
220: pen body
222: battery pack
224: pen point
230: charging tray set
232: outer cover
234: back cover
236: charging tray
240: metal wire
C1: first connecting piece
C2: second connecting piece
C31 And C32: third connecting piece
L1: first length
L2: second length
L3: the third length
G: grounding point
F: feed-in point
D1: a first direction
D2: the second direction
F1 F2, F3: frequency of
VSWR: voltage standing wave ratio
Detailed Description
Various embodiments of the present invention will be described below with reference to the accompanying drawings. For the purpose of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details should not be taken to limit the invention. That is, in some embodiments of the invention, these implementation details are not necessary. In addition, some conventional structures and elements are shown in simplified schematic form in the drawings for the sake of simplifying the drawings; and repeated elements will likely be referred to using the same reference numerals.
In addition, when an element (or a mechanism or a module, etc.) is "connected," "disposed" or "coupled" to another element, it can mean that the element is directly connected, disposed or coupled to the other element, or that the element is indirectly connected, disposed or coupled to the other element, i.e., that there are other elements between the element and the other element. When an element is explicitly connected, directly disposed, or directly coupled to another element, it is intended that no other element is interposed between the element and the other element. The terms first, second, third, etc. are used for describing different elements or components only, and the elements/components are not limited, so that the first element/component can be also called the second element/component. And the combination of elements/components/mechanisms/modules herein is not a commonly known, conventional or existing combination in the art, and cannot be readily determined by one of ordinary skill in the art based on whether the elements/components/mechanisms/modules themselves are present.
Fig. 1 shows a schematic diagram of a bluetooth antenna structure 100 according to an embodiment of the invention. As shown in fig. 1, the bluetooth antenna structure 100 includes a substrate 110 and an antenna module 120, wherein the antenna module 120 is disposed on the substrate 110, and the antenna module 120 includes a first radiator 121, a second radiator 122, a plurality of third radiators 123a,123b, and 123C, a first connector C1, a second connector C2, and a plurality of third connectors C31 and C32.
Specifically, the first radiator 121 has a first length L1 along the first direction D1. The second radiators 122 have a second length L2 along the first direction D1, the second radiators 122 are arranged at intervals on the first radiator 121 along the second direction D2, and the second direction D2 is perpendicular to the first direction D1. In addition, each of the third radiators 123a,123b, and 123c has a third length L3 along the first direction D1, and the third radiators 123a,123b, and 123c are arranged at intervals along the second direction D2 and correspond to the first radiator 121. In addition, the first connector C1 is disposed between the first radiator 121 and the second radiator 122. The second connector C2 is disposed between the first radiator 121 and the third radiator 123a of the adjacent first radiator 121. The third connectors C31 and C32 are disposed between the third radiators 123a,123b and 123C at intervals along the second direction D2. Specifically, the first length L1 is greater than the second length L2, and the first radiator 121, the third radiators 123a,123b, and 123C, the second connector C2, and the third connectors C31 and C32 form a resonant path.
Therefore, the bluetooth antenna structure 100 of the present invention connects the first radiator 121 and the third radiators 123a,123b, and 123C on the substrate 110 through the second connector C2 and the third connectors C31 and C32, so as to form a resonant path to generate a desired bluetooth frequency band.
In detail, the second radiator 122 is disposed opposite to the third radiator 123a along the first direction D1, and a groove 130 is formed between the second radiator 122 and the third radiator 123 a. In addition, the substrate 110 and the antenna module 120 of the bluetooth antenna structure 100 may be a Circuit board substrate and a metal Circuit of a Flexible Printed Circuit (FPC), wherein the FPC is mainly composed of a copper foil (i.e., a metal Circuit), a Circuit board substrate and an adhesive, and thus the antenna module 120 of the present invention may be formed by connecting a portion of the metal circuits of the FPC in series to form the first radiator 121, the second radiator 122 and the third radiators 123a,123b and 123c. In other words, the first radiator 121, the second radiator 122 and the third radiators 123a,123b and 123c are arranged on the substrate 110 in a flexible printed circuit board routing manner, and the process of the flexible printed circuit board is the prior art and is not the focus of the present invention, and details are not repeated.
Furthermore, the first radiator 121 includes a feeding point F, the second radiator 122 includes a grounding point G, the feeding point F and the grounding point G are respectively located at one end of the first radiator 121 and one end of the second radiator 122, and the end of the first radiator 121 and the end of the second radiator 122 are opposite to each other. It should be noted that the first connector C1 is connected to the other end of the second radiator 122. The second connector C2 is connected to the other end of the first radiator 121. The third connector C31 is connected to one end of the third radiator 123b, and is adjacent to the first connector C1 with respect to the second connector C2 and the third connector C32. The third connection member C32 is connected to the other end of the third radiator 123 b.
In addition, the antenna module 120 may cover an operating frequency band, and the operating frequency band of the antenna module 120 is adjusted to be between 2.4GHz to 2.48GHz according to the resonant path. For example, the bluetooth antenna structure 100 of the present invention may have a size of 14.7mm × 1.8mm, wherein the first length L1 of the first radiator 121 may be 14.7mm, the second length L2 of the second radiator 122 may be 11.6mm, the third lengths L3 of the third radiators 123a,123b, and 123c may all be 3mm, and the width (not numbered) of the groove 130 may be 0.1mm, but the present invention is not limited thereto.
The first connecting element C1, the second connecting element C2 and the third connecting elements C31 and C32 may be general conductive elements, metal wires or zero-ohm resistors, and the size of the first connecting element C1, the second connecting element C2 and the third connecting elements C31 and C32 is negligible. Therefore, the resonant path is from the feed point F of the first radiator 121 to the third radiator 123a through the second connector C2, to the third radiator 123b through the third connector C31, and to the third radiator 123C through the third connector C32. Finally, a resonant path with a total length of 23.7mm is formed. Therefore, the antenna module 120 on the small-sized substrate 110 can still effectively generate radiation and resonate out a Bluetooth frequency band of 2.4GHz, so that the effects of small size, high antenna efficiency, omnidirectional radiation and low manufacturing complexity of the antenna can be achieved.
Referring to fig. 2 to 5 together, fig. 2 is a schematic perspective view illustrating a stylus pen 200 having a bluetooth antenna structure according to another embodiment of the invention; FIG. 3 shows an exploded view of stylus 200 with a Bluetooth antenna structure according to FIG. 2; fig. 4 is a schematic diagram illustrating a substrate 310, an antenna module 320 and a metal wire 240 of the stylus pen 200 with the bluetooth antenna structure according to fig. 2; and fig. 5 shows a perspective view of a stylus 200 with a bluetooth antenna structure according to fig. 2. As shown, the stylus pen 200 with the bluetooth antenna structure includes a pen tube 210 and a bluetooth antenna structure 300, wherein the pen tube 210 has an accommodating space 212. The bluetooth antenna structure 300 is disposed in the accommodating space 212 and includes a substrate 310 and an antenna module 320.
Specifically, the stylus pen 200 with the bluetooth antenna structure may further include a pen body 220 and a charging tray set 230, wherein the pen body 220 is disposed in the accommodating space 212, one end of the pen body 220 is disposed with a battery set 222, and the other end of the pen body 220 is disposed with a pen head 224. The charging tray set 230 is connected to the bluetooth antenna structure 300, and the charging tray set 230 includes a housing 232, a back cover 234 and a charging tray 236, wherein the housing 232 is assembled to the pen barrel 210. The rear cover 234 is disposed on the casing 232 and the pen barrel 210, the casing 232 and the rear cover 234 form an accommodating space 212. The charging tray 236 is disposed in the accommodating space 212 and connected to the substrate 310.
In addition, the antenna module 320 is disposed on the substrate 310, and the antenna module 320 includes a first radiator 321, a second radiator 322, a plurality of third radiators 323a,323b, and 323C, a first connector C1, a second connector C2, and a plurality of third connectors C31 and C32. The first radiator 321 has a first length L1 along the first direction D1. The second radiators 322 have a second length L2 along the first direction D1, the second radiators 322 are arranged at intervals on the first radiators 321 along the second direction D2, and the second direction D2 is perpendicular to the first direction D1. In addition, each of the third radiators 323a,323b,323c has a third length L3 along the first direction D1, and the third radiators 323a,323b,323c are arranged at intervals along the second direction D2 and correspond to the first radiator 321. In addition, the first connector C1 is disposed between the first radiator 321 and the second radiator 322. The second connector C2 is disposed between the first radiator 321 and the third radiator 323a of the adjacent first radiator 321. The third connectors C31 and C32 are disposed between the third radiators 323a,323b and 323C at intervals along the second direction D2. Specifically, the first length L1 is greater than the second length L2, and the first radiator 321, the third radiators 323a,323b,323C, the second connector C2, and the third connectors C31 and C32 form a resonant path.
Therefore, the touch pen 200 with the bluetooth antenna structure of the present invention utilizes the resonance path of the bluetooth antenna structure 300 to generate the bluetooth frequency band, so as to not only feed back more information to a tablet, a mobile phone or other touch devices, but also achieve the effects of small antenna size, high antenna efficiency, omnidirectional radiation and low manufacturing complexity.
Furthermore, the second radiator 322 is disposed opposite to the third radiator 323a along the first direction D1, and a trench 330 is disposed between the second radiator 322 and the third radiator 323 a. In addition, the substrate 310 and the antenna module 320 of the stylus pen 200 with the bluetooth antenna structure may be a circuit board substrate and a part of a metal circuit of a flexible printed circuit board, respectively. Therefore, the first radiator 321, the second radiator 322 and the third radiators 323a,323b and 323c are arranged on the substrate 310 in a flexible printed circuit board routing manner.
In addition, the first radiator 321 includes a feeding point F, the second radiator 322 includes a grounding point G, the feeding point F and the grounding point G are respectively located at one end of the first radiator 321 and one end of the second radiator 322, and the end of the first radiator 321 and the end of the second radiator 322 are opposite to each other. It is noted that the first connector C1 is connected to the other end of the second radiator 322. The second connector C2 is connected to the other end of the first radiator 321. The third connector C31 is connected to one end of the third radiator 323b, and is adjacent to the first connector C1 with respect to the second connector C2 and the third connector C32. The third connection member C32 is connected to the other end of the third radiator 323 b.
Specifically, the antenna module 320 may cover an operating frequency band, and the operating frequency band of the antenna module 320 is adjusted to be between 2.4GHz and 2.48GHz according to the resonant path. Therefore, the flexible printed circuit board is used for generating the Bluetooth frequency band between 2.4GHz and 2.48GHz, and the current coupled from the battery pack 222 to the feed-in point F is used for enhancing the radiation effect of the antenna.
It is further noted that the stylus pen 200 with the bluetooth antenna structure may further include a plurality of metal wires 240. The metal wires 240 are disposed on the substrate 310 and spaced apart from each other along the second direction D2 and adjacent to the third radiator 323c, and the metal wires 240 are electrically connected to the battery pack 222 and the charging pad 236, so that the charging pad 236 charges the battery pack 222 through the metal wires 240.
Referring to fig. 6 and 7 together, fig. 6 is a schematic diagram illustrating measurement of S11 parameters of the stylus pen 200 with the bluetooth antenna structure according to fig. 2; and fig. 7 shows a smith chart of a bluetooth antenna structure 300 of a stylus pen 200 having a bluetooth antenna structure according to fig. 2. Referring to fig. 6, based on the reflection loss (Return loss) S11 parameter being equal to-6 dB, the bandwidth of the bluetooth antenna structure 300 can be 100MHz and provide 2.4GHz in the bluetooth band. As shown in fig. 7, the frequencies F1, F2, F3 of the bluetooth antenna structure 300 may fall within a circle with a voltage standing wave ratio VSWR equal to 3, wherein the frequency F1 is 2.413632GHz, the frequency F2 is 2.369282GHz, the frequency F3 is 2.462303GHz, and the frequency F1 is located close to a center point of the circle with the voltage standing wave ratio VSWR =3 by 50 ohms (50 ohms). Therefore, the bluetooth antenna structure 300 of the present invention has a good impedance matching characteristic, and the 3D radiation pattern of the bluetooth antenna structure 300 is omnidirectional, so that energy can be effectively transmitted and received.
In addition, the Bluetooth antenna structure 300 has a transmit gain of 4.1dB, a receive gain of 3dBi, a transmit power of-20 dBm, and a path length of approximately 0.2 wavelengths. It can be deduced from the fries transmission equation that the received power of the bluetooth antenna structure 300 can be-74 dBm, and it conforms to the following formula:
wherein, P r Expressed as received power, P t Expressed as the transmitted power, G t Is shown asTransmission gain, G r Expressed as receive gain, λ as wavelength, D r Denoted as path length. This means that the bluetooth antenna structure 300 of the present invention can effectively transmit and receive signals under the specification of-80 dBm of bluetooth receiving sensitivity.
As can be seen from the above embodiments, the present invention has the following advantages: the first is to arrange the antennas on the substrate in a wiring mode through the flexible printed circuit board, so that an antenna structure with small volume and high efficiency is achieved, and a required Bluetooth frequency band is generated. Secondly, the antenna structure belongs to omnidirectional radiation, and even a touch control pen made of metal materials is combined, the good impedance matching and high-gain radiation characteristics of the antenna can be maintained. Thirdly, the antenna has simple structure and low manufacturing cost.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (16)
1. A bluetooth antenna structure, comprising:
a substrate; and
an antenna module disposed on the substrate, the antenna module comprising:
a first radiator having a first length along a first direction;
the second radiator is provided with a second length along the first direction, is arranged at intervals on the first radiator along a second direction, and is vertical to the first direction;
a plurality of third radiators, each of which has a third length along the first direction, the third radiators being arranged at intervals along the second direction and corresponding to the first radiators;
the first connecting piece is arranged between the first radiator and the second radiator;
the second connecting piece is arranged between the first radiator and one of the third radiators adjacent to the first radiator; and
a plurality of third connectors arranged between the third radiators at intervals along the second direction;
the first length is greater than the second length, and the first radiator, the third radiator, the second connector and the third connector form a resonant path.
2. The bluetooth antenna structure of claim 1, wherein the substrate and the antenna module are a circuit board substrate and a metal circuit of a flexible printed circuit board, respectively.
3. The bluetooth antenna structure of claim 1, wherein the first radiator comprises a feeding point, the second radiator comprises a grounding point, the feeding point and the grounding point are respectively located at one end of the first radiator and one end of the second radiator, and the one end of the first radiator and the one end of the second radiator are opposite to each other.
4. The bluetooth antenna structure of claim 3, wherein the first connector is connected to the other end of the second radiator, the second connector is connected to the other end of the first radiator, wherein a third connector is connected to one end of another third radiator and is adjacent to the first connector with respect to the second connector and the another third connector, and the another third connector is connected to the other end of another third radiator.
5. The bluetooth antenna structure of claim 1, wherein the antenna module covers an operating frequency band adjusted according to the resonant path between 2.4GHz to 2.48 GHz.
6. The bluetooth antenna structure of claim 1, wherein the second radiator is disposed opposite to the one of the third radiators along the first direction.
7. The bluetooth antenna structure according to claim 1, wherein the second radiator is disposed opposite to one of the third radiators, and a slot is formed between the second radiator and the one of the third radiators.
8. A touch control pen with a Bluetooth antenna structure is characterized by comprising:
a pen tube having an accommodating space; and
a bluetooth antenna structure, set up in this accommodation space, this bluetooth antenna structure contains:
a substrate; and
an antenna module disposed on the substrate, the antenna module comprising:
the first radiator is provided with a first length along a first direction;
the second radiator is provided with a second length along the first direction, is arranged at intervals on the first radiator along a second direction, and is vertical to the first direction;
a plurality of third radiators, each of which has a third length along the first direction, the third radiators being arranged at intervals along the second direction and corresponding to the first radiators;
the first connecting piece is arranged between the first radiator and the second radiator;
the second connecting piece is arranged between the first radiator and one of the third radiators adjacent to the first radiator; and
a plurality of third connectors arranged between the third radiators at intervals along the second direction;
the first length is greater than the second length, and the first radiator, the third radiator, the second connector and the third connector form a resonant path.
9. The stylus pen with a bluetooth antenna structure of claim 8, further comprising:
a pen body arranged in the accommodating space, wherein one end of the pen body is provided with a battery pack; and
a charging tray set connected to the bluetooth antenna structure, and the charging tray set includes:
a shell, which is arranged on the pen tube;
the back cover is assembled on the shell and the pen tube, the shell and the back cover form the accommodating space; and
a charging tray disposed in the accommodating space and connected to the substrate.
10. The stylus pen with a bluetooth antenna structure of claim 9, further comprising:
and a plurality of metal wires arranged on the substrate, spaced from each other along the second direction and adjacent to the other third radiator, wherein the metal wires are electrically connected with the battery pack and the charging tray.
11. The touch pen with the bluetooth antenna structure of claim 8, wherein the substrate and the antenna module are a circuit board substrate and a metal circuit of a flexible printed circuit board, respectively.
12. The stylus pen of claim 8, wherein the first radiator comprises a feeding point, the second radiator comprises a grounding point, the feeding point and the grounding point are respectively located at one end of the first radiator and one end of the second radiator, and the one end of the first radiator and the one end of the second radiator are opposite to each other.
13. The touch pen with bluetooth antenna structure as claimed in claim 12, wherein the first connector is connected to another end of the second radiator, the second connector is connected to another end of the first radiator, wherein a third connector is connected to another end of the third radiator and is adjacent to the first connector relative to the second connector and another third connector, and another third connector is connected to another end of another third radiator.
14. The stylus pen of claim 8, wherein the antenna module covers an operating band adjusted according to the resonant path and ranges from 2.4GHz to 2.48 GHz.
15. The stylus pen with the bluetooth antenna structure of claim 8, wherein the second radiator is disposed opposite to the one of the third radiators along the first direction.
16. The stylus pen with a bluetooth antenna structure of claim 8, wherein a trench is disposed between the second radiator and one of the third radiators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194506.2A CN112332074B (en) | 2020-10-30 | 2020-10-30 | Bluetooth antenna structure and touch control pen with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194506.2A CN112332074B (en) | 2020-10-30 | 2020-10-30 | Bluetooth antenna structure and touch control pen with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112332074A CN112332074A (en) | 2021-02-05 |
| CN112332074B true CN112332074B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011194506.2A Active CN112332074B (en) | 2020-10-30 | 2020-10-30 | Bluetooth antenna structure and touch control pen with same |
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| CN (1) | CN112332074B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106560952A (en) * | 2015-10-05 | 2017-04-12 | 宏达国际电子股份有限公司 | Portable electronic device |
| CN206411627U (en) * | 2015-07-06 | 2017-08-15 | 苹果公司 | Computer stylus with antenna |
| CN109980354A (en) * | 2017-12-28 | 2019-07-05 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with the antenna structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3474375B1 (en) * | 2014-03-28 | 2023-05-03 | Huawei Device Co., Ltd. | Antenna and mobile terminal |
-
2020
- 2020-10-30 CN CN202011194506.2A patent/CN112332074B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206411627U (en) * | 2015-07-06 | 2017-08-15 | 苹果公司 | Computer stylus with antenna |
| CN106560952A (en) * | 2015-10-05 | 2017-04-12 | 宏达国际电子股份有限公司 | Portable electronic device |
| CN109980354A (en) * | 2017-12-28 | 2019-07-05 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with the antenna structure |
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| Publication number | Publication date |
|---|---|
| CN112332074A (en) | 2021-02-05 |
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