CN211062851U - Antenna system and electronic device - Google Patents
Antenna system and electronic device Download PDFInfo
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- CN211062851U CN211062851U CN201922492546.4U CN201922492546U CN211062851U CN 211062851 U CN211062851 U CN 211062851U CN 201922492546 U CN201922492546 U CN 201922492546U CN 211062851 U CN211062851 U CN 211062851U
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- antenna
- circuit board
- pifa
- antenna system
- radiating arm
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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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- 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
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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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Abstract
The utility model discloses an antenna system and electronic equipment, the antenna system includes circuit board and PIFA antenna, be provided with the antenna on the circuit board and place the district, PIFA antenna includes the radiation arm; the PIFA antenna is attached the district is placed to the antenna on the surface, just the shape of radiation arm with the district is placed to the antenna shape looks adaptation, the utility model discloses a be provided with the antenna on the circuit board and place the district to place the radiation arm matching of PIFA antenna in the district is placed to the antenna, overcome the narrow and small problem of being convenient for antenna overall arrangement in circuit board space, make the antenna can adapt to more narrow and small equipment in reservation position, thereby practiced thrift the space of circuit board greatly.
Description
Technical Field
The utility model relates to a wireless communication technology field, in particular to antenna system and electronic equipment.
Background
With the development of wireless communication technology, the wireless communication system is widely applied to smart homes, and a wireless network is an indispensable communication mode for smart homes, so that a built-in antenna system of smart home equipment or electronic equipment is important to obtain good signal transmission. For example, in common intelligent doorbell among daily life, the circuit layout on intelligent doorbell's internal circuit board is fairly complicated, and the space that built-in antenna can place is very narrow and small, and current antenna size is great, and is highly higher, can't adapt to miniaturized product demand.
Thus, the prior art has yet to be improved and enhanced.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art's weak point, an object of the utility model is to provide an antenna system and intelligent doorbell overcome the narrow and small not convenient for antenna layout's of current circuit board space defect.
In order to achieve the purpose, the utility model adopts the following technical proposal:
an antenna system comprises a circuit board and a PIFA antenna, wherein an antenna placing area is arranged on the circuit board, and the PIFA antenna comprises a radiation arm; the PIFA antenna is attached to the surface of the antenna placing area, and the shape of the radiating arm is matched with that of the antenna placing area.
Further, the antenna system, wherein the PIFA antenna further includes a feeding terminal and a shorting strip; one end of the feed end is connected with one end of the radiation arm and one end of the short-circuit piece; the other end of the feed end is connected with the circuit board, and the other end of the short-circuit piece is connected with the circuit board.
Further, the antenna system, wherein the radiating arm includes a first radiating arm and a second radiating arm, one end of the first radiating arm is connected to one end of the feed terminal and one end of the shorting strip, the other end of the first radiating arm is connected to one end of the second radiating arm, and one end of the second radiating arm is connected to the circuit board.
Further, the antenna system, wherein the PIFA antenna includes at least two antennas and is symmetrically disposed on the circuit board.
Further, in the antenna system, the PIFA antenna trace is in a G shape or an inverted F shape.
Further, in the antenna system, the PIFA antenna is made of beryllium copper or stainless steel.
Further, the antenna system, wherein the resonance frequency of the PIFA antenna is 2.4G.
Further, the antenna system, wherein the lateral dimension and the longitudinal dimension of the PIFA antenna are both less than 1/4 corresponding to the wavelength of the resonant frequency.
Further, the antenna system, wherein the PIFA antenna has a lateral dimension of 10 mm and a longitudinal dimension of 12.5 mm.
An electronic device comprises the antenna system.
Has the advantages that: compared with the prior art, the utility model provides an antenna system and electronic equipment, the antenna system includes circuit board and PIFA antenna, be provided with the antenna and place the district on the circuit board, PIFA antenna includes the radiation arm; the PIFA antenna is attached the district is placed to the antenna on the surface, just the shape of radiation arm with the district is placed to the antenna shape looks adaptation, the utility model discloses a be provided with the antenna on the circuit board and place the district to place the radiation arm matching of PIFA antenna in the district is placed to the antenna, overcome the narrow and small problem of being convenient for antenna overall arrangement in circuit board space, make the antenna can adapt to more narrow and small equipment in reservation position, thereby practiced thrift the space of circuit board greatly.
Drawings
Fig. 1 is a schematic structural diagram of an antenna system according to the present invention;
fig. 2 is a schematic structural diagram of a PIFA antenna in an antenna system according to the present invention;
fig. 3 is a schematic structural diagram of a main antenna and an auxiliary antenna in an antenna system according to the present invention;
fig. 4a is a diagram illustrating a coverage effect of a main antenna in an antenna system according to the present invention;
fig. 4b is a diagram illustrating the coverage effect of an auxiliary antenna in an antenna system according to the present invention;
fig. 5 is the utility model provides a pair of intelligent doorbell's product structure graph.
Detailed Description
An object of the utility model is to provide an antenna system and electronic equipment aims at overcoming the narrow and small defect of the antenna layout of being not convenient for in current circuit board space. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the embodiments and claims, the terms "a" and "an" can mean "one or more" unless the article is specifically limited.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
At present, the space that the antenna among general electronic equipment can be placed is all narrower to intelligent doorbell is the example, and intelligent doorbell is inside because numerous spaces that lead to the antenna to place of components and parts are very limited, and the antenna needs sufficient overall arrangement just can effectual transmission radio signal, and current antenna size is great, and is highly higher, can't adapt to miniaturized product demand. And the utility model discloses a be provided with the antenna on the circuit board and place the district to place the matching of the radiating arm of PIFA antenna in the district is placed to the antenna, overcome the narrow and small problem of the antenna overall arrangement of being not convenient for in circuit board space, make the antenna can adapt to more narrow and small equipment in reservation position, thereby practiced thrift the space of circuit board greatly.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an antenna system provided by the present invention, and fig. 2 is a schematic structural diagram of a PIFA antenna in the antenna system provided by the present invention; the antenna system comprises a circuit board 10 and a PIFA antenna 20, wherein an antenna placing area (not shown) is arranged on the circuit board 10, and the PIFA antenna 20 comprises a radiating arm 210; the PIFA antenna 20 is attached to the surface of the antenna placement area, and the shape of the radiating arm 210 is adapted to the shape of the antenna placement area.
In a specific embodiment, the circuit board 10 may include: a main board of a conventional electronic device such as a Printed Circuit Board (PCB), a flexible printed circuit board (FPC) or the like, wherein the PIFA antenna 20 is named after its side structure similar to the inverted english letter F, the PIFA antenna 20 has a quarter of an operating wavelength and a grounding metal surface is already included in its structure to reduce the sensitivity to the grounding metal surface in the module, so that the PIFA antenna is very suitable for use in the electronic device, on the other hand, since the PIFA antenna 20 only needs to be connected to the ground plane by a metal conductor in a manner of matching with a proper feed-in and shorting to the ground plane, the PIFA antenna 20 is low in manufacturing cost and can be directly soldered to the circuit board 10, and the metal conductor of the PIFA antenna 20 can be in a linear or sheet shape, which is not specifically limited by the present invention, the circuit board 10 is provided with an area for placing the PIFA whole PIFA antenna 20 is attached to the surface of the antenna placing area, the radiating arm 210 of the PIFA antenna 20 is adapted to the shape of the antenna placement area; the shape of the PIFA antenna 20 to be placed is set according to the shape of the antenna placing area on the circuit board 10, because the part responsible for radiation in the antenna structure is the main structure, the radiating arm 210 in the PIFA antenna 20 is matched with the shape of the antenna placing area of the circuit board 10 to adapt to the position of a complex element on the circuit board 10, thereby overcoming the problem of narrow space of the circuit board, meanwhile, the PIFA antenna attached on the circuit board greatly reduces the height of the antenna, and provides the antenna with an ultra-low profile.
As a further alternative, with continued reference to fig. 2, the PIFA antenna 20 further includes a feed terminal 211 and a shorting tab 212; one end of the feeding end 211 is connected to one end of the radiating arm 210 and one end of the shorting strip 212; the other end of the feeding terminal 211 is connected to the circuit board 10, and the other end of the shorting strip 212 is connected to the circuit board 10.
Specifically, one end of a radiation arm 210 of the PIFA antenna is attached to the circuit board 10, and one end of the radiation arm 210 is connected to a common end of the feeding terminal 211 and the shorting strip 212; the other ends of the feed end 211 and the short-circuit piece 212 are connected to the circuit board; the radiating arm 210 is attached to the surface of the antenna placement area of the circuit board, and the portion near the outer contour of the circuit board 10 is consistent with the contour of the circuit board 10, so as to realize the avoiding fit with the components on the circuit board, and not to generate position conflict with the components already fixed on the circuit board 10.
As a further scheme, the radiating arm 210 includes a first radiating arm 2101 and a second radiating arm 2102, one end of the first radiating arm 2101 is connected to one end of the feeding terminal 211 and one end of the shorting strip 212, the other end of the first radiating arm 2101 is connected to one end of the second radiating arm 2102, and one end of the second radiating arm 2102 is connected to the circuit board 10.
It should be noted that fig. 2 only illustrates one embodiment of the present invention, wherein the first radiation arm 2101 and the second radiation arm 2102 are both in L shapes, the long side of the first radiation arm 2101 is connected to the short side of the second radiation arm 2102, the long side of the second radiation arm 2102 is not connected to the short side of the first radiation arm 2101, and therefore is in an unclosed quadrilateral shape, the short side of the second radiation arm 2102 is connected to the feeding terminal 211 and one end of the shorting strip 212, and the other ends of the feeding terminal 211 and the shorting strip 212 are connected to the circuit board, of course, the above connection method is only an example, and when actually connected to the circuit board, a suitable antenna placement area should be set according to the position of each component on the circuit board 10.
As a further solution, please refer to fig. 3, fig. 3 is a schematic structural diagram of a main antenna and an auxiliary antenna in an antenna system according to the present invention; the PIFA antenna 20 includes at least two and is symmetrically disposed on the circuit board.
In a specific embodiment, at least two PIFA antennas 20 may be disposed on the circuit board, and the two PIFA antennas are disposed as a main antenna and an auxiliary antenna, because a single antenna cannot satisfy the omnidirectional radiation characteristic required by the electronic device, and the adoption of the main antenna and the auxiliary antenna can effectively improve the omnidirectional radiation characteristic, which generally means that the radiation intensity of the antenna around the antenna in the horizontal plane is equal to the surrounding as much as possible, that is, the radiation intensity is strongest in each direction in the horizontal plane rather than in a single direction. Therefore, by adopting the design of the main antenna and the auxiliary antenna, for example, when the circuit board is provided with the main antenna 21 and the auxiliary antenna 22, when a signal is weak in a certain direction of the main antenna 21, the auxiliary antenna 22 is called to work, and the signal strength is maintained to be unchanged, and similarly, when a signal is weak in a certain direction of the auxiliary antenna 22, the main antenna 21 is called to work, and the signal strength is maintained to be unchanged, so that the effect of omnidirectional radiation is finally achieved; and about walking the line mode and can adopting the most commonly used "G" word form or "F" word form, for example adopt "G" word form to walk the line, it walks the line shape just like english letter "G", a long line is wrapping a short line of walking, can produce two resonances so well, and because "G" word form is walked the line and is partd, to the adjustment of these two lines of walking, can control the frequency shift of low frequency and high frequency respectively well, convenient debugging, it is related with the region that the district was placed to the antenna on the circuit board to think of course specific line of walking is placed, to specific line mode the utility model discloses do not do the restriction.
Referring to fig. 4a and 4b, fig. 4a is a coverage effect diagram of a main antenna in an antenna system provided by the present invention, and fig. 4b is a coverage effect diagram of an auxiliary antenna in an antenna system provided by the present invention, that is, a directional diagram of the main antenna and the auxiliary antenna in a horizontal plane, where the directional diagram refers to a representation of radiation intensity, similar to a contour line on a map. In polar coordinates, the closer to the outer circle it represents the stronger the radiation at that orientation. In fig. 4a and 4b, vertical polarization field gain 40 is included, and total field gain 50. The relationship between the so-called vertical polarization field gain 40 and the total field gain 50 is as a rule a quadrature decomposition of the force, and the field can also be decomposed orthogonally into horizontal and vertical polarization, the two together being the total field. The middle dashed circle is the divided intensity criterion, gain marking value reference line 30, which is typically a requirement for vertical polarization, vertical polarization field gain 40. From the figure, the vertical polarization field gain 40 in fig. 4a and 4b has a region that does not meet the intensity requirement in the lower right and lower left corners, respectively. However, if the two gaps are overlapped, the two gaps can be mutually compensated, which is called main-auxiliary complementation, and the main-auxiliary relationship is based on the chip algorithm, which is not described in detail in the present invention.
The PIFA antenna is arranged on the circuit board, the PIFA antenna is attached to the surface of the antenna placing area, the shape of the antenna radiation arm is matched with the shape of the antenna placing area, the section of the PIFA antenna is greatly reduced, the PIFA antenna can adapt to a narrow space reserved in an intelligent doorbell, if the PIFA antenna 20 is designed according to normal wiring, the size is enlarged by more than one time, and based on the inverse relation between the antenna size and the frequency (the length and the wavelength of the antenna are in direct proportion, so the frequency is inversely proportional to the frequency, the higher the frequency is, the shorter the wavelength is, the shorter the antenna can be made), the longer the antenna length is, the lower the frequency is, therefore, the PIFA antenna 20 can be all effective length by adopting the mode of arranging the antenna placing area on the circuit board, the size of the PIFA antenna 20 is reduced compared with the normal wiring mode, and the PIFA antenna layout with the resonant frequency of 2., wherein the lateral dimension and the longitudinal dimension of the PIFA antenna or the second antenna 22 are both less than 1/4 of the wavelength corresponding to the resonant frequency, and in one embodiment, the lateral dimension of the PIFA is 10 mm, and the longitudinal dimension of the PIFA is 12.5 mm, although the lateral dimension and the longitudinal dimension of the PIFA antenna are only for illustration and are not used to limit the present invention.
As a further scheme, the PIFA antenna material is beryllium copper or stainless steel, and the material to select the antenna can be based on beryllium copper, cupronickel or stainless steel that is required in the process of actual production, and is specifically determined according to the use scene, the utility model discloses do not specifically limit.
In specific implementation, the selection of the antenna material may be selected according to the actual application, for example, beryllium copper or cupronickel with high conductivity and excellent heat dissipation performance may be selected when the conductive property is required to be good, or stainless steel material may be selected when the requirement is general; of course other conductive materials may be chosen as well.
The utility model also provides an electronic equipment, electronic equipment includes as above antenna system, this electronic equipment can be electronic equipment that has antenna system such as intelligent doorbell. Referring to fig. 4, fig. 4 is a product structure diagram of an intelligent doorbell, wherein the intelligent doorbell includes a base, a housing, a speaker, and the antenna system.
In this embodiment, the inside numerous structures of components and parts are complicated relatively of intelligence doorbell, for example, can need to pass through screw or bolt fixed connection with circuit board and base, and the screw position on the circuit board just sets up when dispatching from the factory early, therefore the complicated circuit board overall arrangement of intelligence doorbell leads to the space that the antenna can be placed very limited, and the antenna needs sufficient overall arrangement just can effectual transmission wireless signal, consequently just be close to the shell part easily when the installation antenna, and the doorbell shell is often that the metal is made, the metal has certain interference to wireless signal, and based on the scene that intelligence doorbell used, common in installing on the wall, marble department etc., therefore the backshell of intelligence doorbell contacts materials such as marble and can receive certain shielding influence. The antenna placing area is arranged on the circuit board inside the doorbell, and the PIFA antenna is attached to the surface of the antenna placing area, so that the shape of the PIFA antenna radiation arm is matched with the shape of the antenna placing area, the problem that the circuit board inside the intelligent doorbell is complex in layout and cannot be matched with the antenna can be better solved, meanwhile, the antenna radiation arm is far away from the metal shell, the influence of the metal shell can be effectively avoided, and the anti-interference performance of the antenna is improved; and the design layout based on main-auxiliary symmetry in the antenna system is benefited, so that the required omnidirectional radiation characteristic is greatly met, and the omnidirectional antenna is realized.
It should be noted that the antenna system of each of the above embodiments may also be disposed in various communication devices, such as a small base station, a wireless access point, a Passive Optical Network (PON) device, a router, or an electronic device using various wireless communication protocols, for example, including Wi-Fi, bluetooth low power (B L E), zigbee (Z igBee), Z-wave, digital enhanced wireless communication (digital enhanced wireless communication, dtt), long term evolution (L on terminal solution, <tttt translation &/t gtt &), and the antenna system of each of the above embodiments may be applied to printed circuit boards (PCBs, flexible printed circuit boards, direct laser (FPC) applications, L, and other technologies.
To sum up, the utility model provides an antenna system and electronic equipment, the antenna system includes circuit board and PIFA antenna, be provided with the antenna and place the district on the circuit board, PIFA antenna includes the radiation arm; the PIFA antenna is attached the district is placed to the antenna on the surface, just the shape of radiation arm with the district is placed to the antenna shape looks adaptation, the utility model discloses a be provided with the antenna on the circuit board and place the district to place the radiation arm matching of PIFA antenna in the district is placed to the antenna, overcome the narrow and small problem of being convenient for antenna overall arrangement in circuit board space, make the antenna can adapt to more narrow and small equipment in reservation position, thereby practiced thrift the space of circuit board greatly.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.
Claims (10)
1. An antenna system is characterized by comprising a circuit board and a PIFA antenna, wherein an antenna placing area is arranged on the circuit board, and the PIFA antenna comprises a radiation arm; the PIFA antenna is attached to the surface of the antenna placing area, and the shape of the radiating arm is matched with that of the antenna placing area.
2. The antenna system of claim 1, wherein the PIFA antenna further comprises a feed end and a shorting tab; one end of the feed end is connected with one end of the radiation arm and one end of the short-circuit piece; the other end of the feed end is connected with the circuit board, and the other end of the short-circuit piece is connected with the circuit board.
3. The antenna system of claim 2, wherein the radiating arm comprises a first radiating arm and a second radiating arm, one end of the first radiating arm is connected with one end of the feeding end and one end of the shorting strip, the other end of the first radiating arm is connected with one end of the second radiating arm, and one end of the second radiating arm is connected with the circuit board.
4. The antenna system of claim 1, wherein said PIFA antennas comprise at least two and are symmetrically disposed on said circuit board.
5. The antenna system of claim 4, wherein the PIFA antenna trace is G-shaped or inverted F-shaped.
6. The antenna system of claim 5, wherein the PIFA antenna material is beryllium copper or stainless steel.
7. The antenna system of claim 6, wherein the PIFA antenna has a resonant frequency of 2.4G.
8. The antenna system of claim 7, wherein the PIFA antenna has both a lateral dimension and a longitudinal dimension less than 1/4 of the wavelength corresponding to the resonant frequency.
9. The antenna system of claim 8, wherein the PIFA antenna has a lateral dimension of 10 millimeters and a longitudinal dimension of 12.5 millimeters.
10. An electronic device, characterized in that the electronic device comprises an antenna system according to any of claims 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492546.4U CN211062851U (en) | 2019-12-31 | 2019-12-31 | Antenna system and electronic device |
| PCT/CN2020/115245 WO2021135389A1 (en) | 2019-12-31 | 2020-09-15 | Antenna system and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492546.4U CN211062851U (en) | 2019-12-31 | 2019-12-31 | Antenna system and electronic device |
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| CN211062851U true CN211062851U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922492546.4U Active CN211062851U (en) | 2019-12-31 | 2019-12-31 | Antenna system and electronic device |
Country Status (2)
| Country | Link |
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| CN (1) | CN211062851U (en) |
| WO (1) | WO2021135389A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135389A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳Tcl数字技术有限公司 | Antenna system and electronic device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201041823Y (en) * | 2007-04-04 | 2008-03-26 | 富士康(昆山)电脑接插件有限公司 | Antenna assembly |
| KR102036046B1 (en) * | 2013-05-29 | 2019-10-24 | 삼성전자 주식회사 | Antenna device and electric device having the same |
| CN108400426B (en) * | 2018-01-25 | 2020-12-15 | 瑞声科技（南京）有限公司 | Antenna assembly and mobile terminal |
| CN108847523A (en) * | 2018-06-06 | 2018-11-20 | 北京星网锐捷网络技术有限公司 | Planar inverted-F antenna |
| CN211062851U (en) * | 2019-12-31 | 2020-07-21 | 深圳Tcl数字技术有限公司 | Antenna system and electronic device |
-
2019
- 2019-12-31 CN CN201922492546.4U patent/CN211062851U/en active Active
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2020
- 2020-09-15 WO PCT/CN2020/115245 patent/WO2021135389A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135389A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳Tcl数字技术有限公司 | Antenna system and electronic device |
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| WO2021135389A1 (en) | 2021-07-08 |
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