CN209183725U - A kind of antenna and the circuit board with the antenna - Google Patents
A kind of antenna and the circuit board with the antenna Download PDFInfo
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- CN209183725U CN209183725U CN201822026240.5U CN201822026240U CN209183725U CN 209183725 U CN209183725 U CN 209183725U CN 201822026240 U CN201822026240 U CN 201822026240U CN 209183725 U CN209183725 U CN 209183725U
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Abstract
The utility model provides a kind of antenna, and for onboard antenna in wireless communication field, the antenna is unipole antenna comprising the antenna body being set on PCB main board, antenna body include antenna cabling；Antenna cabling is distributed in the top and bottom of PCB main board, and the antenna cabling on top and bottom passes through the via hole being arranged in antenna cabling and is connected with each other, and top and bottom antenna cabling includes high-frequency signal section, low frequency signal section and current distribution section；PCB main board includes electronic component setting area, the first tuning switch, the second tuning switch；The utility model also provides a kind of circuit board that the antenna is arranged, and onboard antenna is enabled to realize that wideband designs in the small space on pcb board.
Description
Technical field
The utility model relates to wireless communication field more particularly to a kind of antennas and the circuit board for being provided with the antenna.
Background technique
With the fast development of the communication technology, wireless communication technique is widely used in medical treatment, drives, consumption, intelligent family
Occupy etc. various fields, and realize wireless communication basis --- the development of antenna technology also becomes most important.In recent years, antenna
Type is gradually diversified, and the appearance of onboard antenna meets people's convenient and fast demand frivolous for terminal device.
With the miniaturization of existing mobile device, the circuit board of highly integrated type is by wide popularization and application, however, PCB
The space for leaving antenna on plate for is smaller and smaller, how to take into account the micromation of antenna and the broadband of antenna, at a great problem.
Due to Antenna Design optimum size be 1/4 wavelength when, resonance point is optimal, and radiance is best, in order to meet this requirement,
Antenna Design in existing technology all occupies larger space on PCB main board, forces the PCB main board provided with antenna that can only expand
Large scale is to meet antenna arrangement, so that onboard antenna can not be applied to more areas.
Utility model content
The utility model provides a kind of antenna that can be occupied small space on pcb board and just be able to achieve wideband design, and
It is provided with the circuit board of the antenna.
The utility model provides a kind of antenna, transmits for signal, the antenna is unipole antenna comprising is set to
Antenna body on PCB main board, the antenna body include antenna cabling；The antenna cabling is distributed in the top surface of PCB main board
And bottom surface, the antenna cabling on the top and bottom, which passes through the via hole being arranged in antenna cabling, to be realized and is connected with each other, described
Top and bottom antenna cabling includes high-frequency signal section, low frequency signal section and current distribution section, the top and bottom
Current distribution section, high-frequency signal section and low frequency signal section are arranged successively along the length direction of PCB main board.
Preferably, electronic component setting area, the electric current point of the top surface of the PCB main board are provided on the PCB main board
Cloth section nearby electron element setting area, low frequency signal section are located remotely from one end of electronic component setting area, high-frequency signal section
Between low frequency signal section and current distribution section.High-frequency signal section high frequency signal for transmitting and receiving is described low
Low frequency signal, the current distribution section are distributed frequency signal segment for adjustment signal bandwidth and antenna current for transmitting and receiving.
Preferably, " C " shape, the low frequency signal Duan Dan is presented in the current distribution section Yu high-frequency signal section of the top surface jointly
It is solely in " G " shape；" 2 " shape, the low frequency signal Duan Dan is presented in high-frequency signal section and current distribution section positioned at the bottom surface jointly
Solely in inverse-T-shaped.
Preferably, feeding point and ground feed point are provided in the antenna cabling, the feeding point and ground feed point are set to PCB
Side of the current distribution section of the antenna cabling of the top surface of mainboard close to electronic component setting area.
Preferably, the first tuning switch and the second tuning switch are additionally provided on the PCB main board；The electronic component is set
Setting region further includes feed port and ground signalling port；One end of first tuning switch and the feed of the antenna cabling
Point electrical connection, the other end are electrically connected with the feed port of the electronic component setting area, and first tuning switch is used for day
Signal transmission between line and electronic component setting area；
One end of second tuning switch is electrically connected with the ground feed point of the antenna cabling, and the other end is set with electronic component
The ground signalling port electrical connection in region is set, first tuning switch and the second tuning switch work at the same time, jointly to low
Frequency signal is tuned.
Preferably, the electronic component setting area further includes antenna rf circuit, the electronic component setting area
Feed port is located on the antenna rf circuit, first tuning switch and electronic component setting area radio circuit
Feed port electrical connection.
Preferably, the PCB main board is having a size of 25mm*20mm*1.2mm；Electronic component setting area is having a size of 20mm*
10mm*1.2mm；Antenna cabling overall dimensions are 20mm*10mm*1.2mm.
Preferably, antenna headroom area, the antenna headroom are equipped between the electronic component setting area and antenna cabling
The width in area at least 5mm.
Preferably, first tuning switch and the second tuning switch itself have switched matching circuit, and the first tuning
Switch is correspondingly connected with first switch match circuit, and the second tuning switch is correspondingly connected with second switch match circuit；Described first adjusts
The 4.3PF capacitor shelves series connection of the humorous corresponding first switch match circuit of switch, the corresponding second switch of the second tuning switch
The 6.8NH inductance shift parallel connection of match circuit, first switch match circuit and second switch match circuit are mutually indepedent.
The utility model also provides a kind of circuit board, including PCB main board and the antenna, is provided on the PCB main board
Antenna body, electronic component setting area, the first tuning switch, the second tuning switch.The antenna is unipole antenna comprising
The antenna body being set on PCB main board, the antenna body include antenna cabling；The antenna cabling is distributed in PCB main board
Top and bottom, the antenna cabling on the top and bottom passes through the via hole realization being arranged in antenna cabling and mutually interconnects
It connects, the top and bottom antenna cabling includes high-frequency signal section, low frequency signal section and current distribution section, the top surface
It is arranged successively with the current distribution section, high-frequency signal section and low frequency signal section of bottom surface along the length direction of PCB main board.
Antenna on the utility model circuit board uses unipole antenna, antenna cabling be arranged in simultaneously circuit board top surface and
On bottom surface, connected using via hole, compared with the prior art in single layer Antenna Design onboard antenna, the antenna of the utility model
Reduce antenna cabling to be taken up space on circuit boards.Compared to existing Antenna Design, which is guaranteeing broadband operation
On the basis of range, miniaturized design is realized.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the structural schematic diagram of the top surface of the utility model circuit board；
Fig. 2 is the structural schematic diagram of the bottom surface of the utility model circuit board；
Fig. 3 is the schematic perspective view of Fig. 1；
Fig. 4 is the stereoscopic mechanism schematic diagram of Fig. 2；
Fig. 5 is the emulation standing-wave ratio figure of the antenna of the utility model；
Fig. 6 is the 3D radiation direction effect picture of the antenna in 824MHZ of the utility model；
Fig. 7 is the 3D radiation direction effect picture of the antenna in 960MHZ of the utility model；
Fig. 8 is the 3D radiation direction effect picture of the antenna in 1710MHZ of the utility model；
Fig. 9 is the 3D radiation direction effect picture of the antenna in 2690MHZ of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are under that premise of not paying creative labor
Every other embodiment obtained, fall within the protection scope of the utility model.
In addition, the explanation of following embodiment is referred to the additional illustration, can be used to implement to illustrate the utility model
Specific embodiment.The direction term being previously mentioned in the utility model, for example, "upper", "lower", "front", "rear", "left", "right",
"inner", "outside", " side " etc. are only the directions with reference to annexed drawings, and therefore, the direction term used is in order to more preferable, more clear
Illustrate to Chu and understand the utility model, rather than indicate or imply signified device or element must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connected, Huo Zheyi
Connect to body；It can be mechanical connection；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, it can understand that above-mentioned term is practical at this with concrete condition
Concrete meaning in novel.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
If occurring the term of " process " in this specification, independent process is referred not only to, when can not clearly be distinguished with other process,
It is also included in this term as long as being able to achieve effect desired by the process.In addition, the number indicated in this specification with "~"
Value range refers to the range that the numerical value for recording "~" front and back is included as minimum value and maximum value.In the accompanying drawings,
Structurally similar or identical unit is indicated by the same numeral.
It is the structural schematic diagram of the top surface of the utility model circuit board 100 referring to Fig. 1 to Fig. 2, Fig. 1, Fig. 2 is that this is practical new
The structural schematic diagram of the bottom surface of type circuit board.The present embodiment provides a kind of circuit boards 100 comprising PCB main board 11 and is set to
One end of antenna on PCB main board 11, the PCB main board 11 is provided with electronic component setting area 113.
The antenna includes antenna body 10, and the antenna body 10 is set on PCB main board 11, the antenna body 10
Using unipole antenna cabling, which includes antenna cabling 101, via hole 102, feeding point 103 and ground feed point 105.Institute
It states and is additionally provided with the first tuning switch 111 and the second tuning switch 112 on PCB main board 11.
In the present embodiment, the antenna cabling 101 is distributed in the top and bottom of PCB main board 11, top and bottom
Antenna cabling 101 passes through the via hole 102 being arranged on pcb board and realizes interconnection；The antenna cabling 101 of top surface is divided for high frequency letter
Number section 1013a, low frequency signal section 1014a and current distribution section 1015a；Current distribution section 1015a, high-frequency signal section 1013a
And low frequency signal section 1014a is arranged successively along the length direction of PCB main board 11.Current distribution section 1015a nearby electron element
Setting area 113, electronic component setting area 113 are located at one end of 11 length direction of PCB main board；Low frequency signal section 1014a
In the end of one end on PCB main board 11 far from electronic component setting area 113, high-frequency signal section 1013a is located at low frequency signal
Between section 1014a and current distribution section 1015a, high-frequency signal section 1013a is connected with current distribution section 1015a.
The high-frequency signal section 1013a and the current distribution section 1015a positioned at top surface be end to end collectively form it is whole
" G " font cabling is individually presented in the cabling of body " C " font, the low frequency signal section 1014a.
As shown in Fig. 2, the antenna cabling 101 of bottom surface be also classified into current distribution section 1015b, high-frequency signal section 1013b and
Low frequency signal section 1014b.Current distribution section 1015b, high-frequency signal section 1013b, low frequency signal section 1014b are along PCB main board 11
Length direction is arranged successively.Current distribution section 1015b nearby electron element setting area 113.Low frequency signal section 1014b is set to
An end portion far from the electronic component setting area 113 on PCB main board 11, high-frequency signal section 1013b are located at low frequency signal section
Between 1014b and current distribution section 1015b, high-frequency signal section 1013b is connected with current distribution section 1015b.
The high-frequency signal section 1013b and the current distribution section 1015b positioned at bottom surface are surrounded generally jointly in " 2 " font
Cabling, the low frequency signal section 1014b are individually in inverted " t " font cabling.
The antenna cabling 101 of top surface and 101 connection relationship of antenna cabling of bottom surface are as follows: the current distribution section positioned at top surface
1015a is connected with one end of the high-frequency signal section 1013a of top surface, and the current distribution section 1015a of top surface is far from the high-frequency signal
One end of section 1013a is located at the current distribution section 1015b of bottom surface through the connection of via hole 102；The current distribution section 1015b of bottom surface and bottom
One end of the high-frequency signal section 1013b in face is connected, and the high-frequency signal section 1013b of bottom surface is far from the current distribution section 1015b's
One end is connected by another via hole 102 with the low frequency signal section 1014a of top surface, and the low frequency signal section 1014a of top surface is through via hole 102
It is connected with the low frequency signal section 1014b of bottom surface.
When receiving low frequency signal, the low frequency signal section 1014a and bottom surface low frequency signal section 1014b of top surface receive low frequency spoke
After penetrating signal, it is transmitted to the high-frequency signal section 1013b of bottom surface through via hole 102, and then is transmitted to the current distribution section of bottom surface
The current distribution section 1015b of 1015b, bottom surface transmit a signal to the current distribution section 1015a of top surface using hole 102 and then pass through
Feeding point 103 is passed to tuning switch with ground feed point 105 and electronic component setting area 113 is handled.
When receiving high frequency signal, during the high-frequency signal section 1013a of top surface and the high-frequency signal section 1013b of bottom surface are received
After high-frequency signal, received high frequency signal is transmitted to the current distribution section of top surface by the high-frequency signal section 1013a of top surface
1015a；Received medium-high frequency letter is transmitted to the current distribution section 1015b of bottom surface by the new number section 1013b of the high frequency of bottom surface, bottom surface
High frequency signal is transmitted to the current distribution section 1015a of top surface by current distribution section 1015b through via hole 102, and then passes through antenna
Feeding point 103 is transmitted to tuning switch with ground feed point 105 and electronic component setting area 113 is handled.
It in the present embodiment, is the schematic perspective view of Fig. 1 please also refer to Fig. 1 and Fig. 3, Fig. 3；The PCB main board
11 further include the first side 114, second side 115, end edge 116 being oppositely arranged, and the current distribution section 1015a of top surface is located at
The top half of " C " font, i.e., the described current distribution section 1015a higher frequency signals section 1013a are more set adjacent to the electronic component
Set region 113.The cabling of current distribution section 1015a extends from the second side of PCB main board 11 115 towards first side 114, directly
Extend one section to adjacent to the first side 114, then towards the direction of end edge 116, cabling one end of the high-frequency signal section 1013a
It is connected to one section that the current distribution section 1015a extends, the other end extends towards second side 115.Current distribution section 1015a is leaned on
The side of nearly electronic component setting area 113 equipped with antenna feed point 103 and antenna feed point 105.
1015 trace width of current distribution section is much larger than the trace width and low frequency signal section of high-frequency signal section 1013a
The trace width of 1014a, the trace width size of current distribution section 1015a directly affect what entire antenna sent and received signal
Frequency bandwidth.In general, the trace width of current distribution section 1015a is wider, which is received and transmitting signal band is wider.
In addition, current distribution section 1015a is responsible for adjusting the current distributions of entire antenna cabling, the model of antenna frequency band can be influenced
It encloses.
In the present embodiment, the high-frequency signal section 1013a of top surface is located at " C " font lower half portion, i.e., the described high-frequency signal
Section 1013a compared with current distribution section 1015a with a distance from electronic component setting area 113 farther out.High-frequency signal section 1013a cabling pair
More sensitive in medium-high frequency segment signal, track lengths are shorter, are influenced, are mainly responsible for by current distribution section 1015a trace width
Transmitting and reception medium-high frequency radiation signal.
The low frequency signal section 1014a of top surface is located at the top surface of PCB main board 11 far from the one of electronic component setting area 113
End, the cabling of the low frequency signal section 1014a is from the first side 114 of the PCB main board 11 adjacent to the current distribution section
First side 114 described in a lateral edge at 1015a towards high-frequency signal section 1013 extends to end edge 116, then prolongs along the end edge 116
Opposite second side 115 is extended to, then is vertically extended to the first side 114 after one section of the second side 115 extension,
Until the neighbouring first side 114, to make the cabling shape of low frequency signal section 1014a in " G " font.The low frequency signal
Interval is provided between the cabling and the high-frequency signal section 1013a and current distribution section 1015a of section 1014a.Low frequency letter
Number section 1014a antenna cabling is longer, and more sensitive to low frequency signal, therefore is used to receive and emit low frequency radiation signal.
In the present embodiment, referring to fig. 2 and Fig. 4, Fig. 4 be Fig. 2 schematic perspective view；The current distribution section of bottom surface
1015b is located at the upper half of " 2 " font, and the current distribution section 1015b trace width is wider, and trace width influences integrated antenna
Frequency bandwidth.The current distribution section 1015b closes on the electronic component setting area 113 of top surface, and current distribution section 1015b
Cabling be connected between the first side 114 and second side 115 of PCB main board 11, current distribution section 1015b closes on the first side
The one end on side 114 extends one section towards end edge 116 along first side 114；The trace width of the current distribution section 1015b is wider,
Its trace width will will affect the frequency bandwidth of integrated antenna；In general, the cabling of current distribution section 1015b is wider, the day
Line main body 10 can emit wider with received antenna frequency range.Secondly, current distribution section 1015b can be also used for adjusting
The current distributions of entire antenna cabling 101 are conducive to adjust aerial radiation and receive signal band range, the current distribution
Section 1015b plays the role of vital in entire antenna cabling.
The cabling of the high-frequency signal section 1013b of bottom surface is located at the lower section of " 2 " font, i.e. high-frequency signal section 1013b is located at remote
One end from electronic component setting area 113.The cabling of high-frequency signal section 1013b is connected to current distribution section 1015b certainly and is located at
One end of first side 114 extends on second side 115 towards second side 115, and prolongs along second side 115 towards end edge 116
It is re-extended after stretching one section to first side 114.High-frequency signal section 1013b is more sensitive for medium-high frequency segment signal, by electric current
It is distributed section 1015b widths affect, be mainly responsible for transmitting and receives medium-high frequency radiation signal.The low frequency signal section 1014b of bottom surface is mono-
" T " font is solely presented, the cabling of low frequency signal section 1014b includes prolonging along the end edge 116 of PCB main board 11 from first side 114
One section of second side 115 is extended to, and extends one section from the middle part of the cabling towards high-frequency signal section 1013b, low frequency signal
The lower half portion of neighbouring " 2 " the font antenna in the top of section 1014b.The low frequency signal section antenna 1014b cabling is longer, and to low frequency
Signal is more sensitive, therefore is used to receive and emit low frequency radiation signal.
In the present embodiment, the use of the PCB main board 11 FR-4 material, so-called FR-4 epoxy glass cloth laminated board, commonly referred to as
Are as follows: FR-4Epoxy Glass Cloth, insulation board, FR-4, FR-4 stiffening plate, FR-4 epoxy resin board, fire retardant insulating plate, FR-
4 laminated plates, epoxy plate, FR-4 tabula rasa, FR-4 glass-fiber-plate etc. using the reason of FR-4 material are its electrical insulating properties, stability, flat
Whole to spend, the general dielectric constant of the dielectric-slab of FR4 is in 4.2-5.4, in conjunction with the working frequency range range of this antenna: 824-960MHZ,
1710-2690MHZ, therefore FR4 material is selected, there are the at low cost and advantages such as multicompressed tablet technical maturity.
In the present embodiment, the electronic component setting area 113 further includes the electricity such as antenna rf circuit, base band, power supply
The feed port 1131 of sub- component, the electronic component setting area 113 is located on the antenna rf circuit, and described first
Tuning switch 111 is electrically connected with the feed port 1131 of the radio circuit of the electronic component setting area 113.The electronics member
The ground signalling port 1132 of part setting area 113 is arranged in antenna rf circuit.In other embodiments, the ground signalling
Other ground signalling ends of PCB main board 11 can also be accessed, realize the grounding of the second tuning switch 112.
In the present embodiment, pass through referring to Figure 1 with Fig. 2, the antenna cabling 101 of top surface and the antenna cabling 101 of bottom surface
4 via holes 102 connection on PCB main board 11,4 via holes 102 of top surface are located at current distribution section 1015a and low frequency signal
On section 1014a.
For the convenience of description, by top surface via hole 102 divide for the first via hole of top surface, the second via hole of top surface, top surface third via hole,
The 4th via hole of top surface is described.The first via hole of top surface is located at the top half of " C " font cabling, which is located at as schemed
The intersection of the upside Yu second side 115 of current distribution section 1015a shown in 1.Second via hole is located at low frequency signal section 1014a
" G " font cabling extended to along first side 114 end edge 116 one section of antenna cabling 101 middle part.Top surface third crosses hole location
In the middle part for walking line segment that low frequency signal section 1014a vertically extends to the first side 114 from the second side 115.Top
The 4th via hole of face is located on low frequency signal section 1014a in the intersection of end edge 116 and second side 115.First mistake of top surface
Hole, the 4th via hole of the second via hole of top surface, top surface third via hole and top surface position according to setting on PCB main board 11 far from electronic component
It successively sorts in the direction for setting 113 one end of region.
For the convenience of description, dividing the via hole 102 of bottom surface for the first via hole of bottom surface, the second via hole of bottom surface, bottom surface third mistake
Hole, the 4th via hole of bottom surface are described.The first via hole of bottom surface is located at bottom surface current distribution section 1015b " 2 " font antenna cabling 101
Top half, specifically, first via hole of bottom surface is located at the top side of current distribution section 1015b and the intersection of second side 115
Place；The second via hole of bottom surface is located at bottom surface high-frequency signal section 1013b " 2 " font lower half portion, specifically, hole location is crossed in the bottom surface second
In the bottom side of high-frequency signal section 1013b and the intersection of first side 114；Bottom surface third via hole is located at inverted " t " font low frequency letter
The top of number section 1014b；The 4th via hole of bottom surface is located at low frequency signal section 1014b along the cabling of end edge 116, specifically, bottom surface
4th via hole is located at the cabling of end edge 116 and the intersection of second side 115.First via hole of bottom surface, the second via hole of bottom surface,
The position of the 4th via hole of bottom surface third via hole and bottom surface is according to electronic component setting area 113 1 separate on 11 bottom surface of PCB main board
It successively sorts in the direction at end.
The antenna cabling 101 of top surface and bottom surface realizes connection by via hole 102, top surface via hole 102 and bottom surface via hole 102 it
Between specific corresponding relationship be: the first via hole of top surface is correspondingly connected with the first via hole of bottom surface, the second via hole of top surface and bottom surface second
Via hole is correspondingly connected with, and top surface third via hole is correspondingly connected with bottom surface third via hole, the 4th via hole of top surface and the 4th via hole pair of bottom surface
It should connect.The design that top surface antenna cabling 101 and bottom surface antenna cabling 101 are connected using via hole 102 is conducive to saving antenna and existed
The space occupied on PCB main board 11, the ingenious two-sided structure that onboard antenna is utilized and 102 structure of via hole realize having for space
Effect utilizes.
In the present embodiment, referring to Fig. 1,100 preferred dimension of whole circuit board is the FR-4's of 25mm*20mm*1.2mm
PCB main board 11；The overall dimensions of electronic component setting area 113 are 20mm*10mm*1.2mm；101 overall dimensions of antenna cabling
For 20mm*10mm*1.2mm.Electronic component setting area 113 and antenna cabling 101 respectively occupy the two of 100 length direction of circuit board
End.The clearance zone 12 of antenna cabling 101 is divided between 101 centre of electronic component setting area 113 and antenna cabling, it is described net
The interval width of dead zone 12 is 5mm or more.Antenna headroom area 12 refers to around antenna and vertical plane must not have any device
And ground line, clearance zone is bigger, and aerial radiation effect is better.The design in antenna headroom area is on the one hand to realize to antenna complete
Open space is provided to communication, avoid interfering and is shielded.Another aspect electromagnetic wave is avoided metal and is shielded, therefore antenna cabling
101 should be away as far as possible metal parts, and avoid contact with other noise reduction elements.In the present embodiment, electronic component is arranged
Power supply, base band, radio circuit etc. are equipped in region 113, therefore antenna body 10 should be apart from the electricity on electronic component setting area 113
Source is in 5mm or more, and ground signalling port 1132 distance 4-5mm of the antenna body 10 on electronic component setting area 113 is most
It is good.The design in antenna headroom area is the space that onboard antenna must reserve, and clearance zone ensure that the normal radiation space of antenna,
Also the space for taking full advantage of pcb board to the greatest extent, improves the utilization efficiency of PCB main board 11, improves economic value.
In the present embodiment, the feeding point 103 of antenna cabling 101 and ground feed point 105 are set to the electric current point of top surface
Side of the cloth section 1015a close to electronic component setting area 113；It is walked with the antenna one end of first tuning switch 111
The feeding point 103 of line 101 is electrically connected, and the other end is electrically connected with the feed port 1131 of the electronic component setting area 113, institute
The first tuning switch 111 is stated for the signal transmission between antenna body 10 and electronic component setting area 113；Described second adjusts
One end of humorous switch 112 is electrically connected with the ground feed point 1011 of the antenna cabling 101, the other end and electronic component setting area
113 ground signalling port 1132 is electrically connected, and signal is carried out grounding.Here the first tuning switch 111 and second is adjusted
Humorous switch 112 need to work at the same time, and could be tuned to low frequency signal.
Here the first tuning switch 111 and the second tuning switch 112 is located at antenna headroom area.When working condition, antenna
It receives frequency signal and is transmitted to the first tuning switch 111 progress signal tuning through feeding point 103, the first tuning switch 111 is included
There is first switch match circuit, aerial signal is inputted fixed gear and carries out signal tuning by first switch match circuit here.
Specifically, the first tuning switch 111, in the state of work, first switch match point road is equivalent to series connection and has accessed 4.3PF's
Capacitor shelves, subsequent first tuning switch 111 export the aerial signal after tuning to the feed end of electronic component setting area 113
Mouth 1131, and then the radio circuit of input electronic element setting area 113.Antenna ground feed point 105 and 112 phase of the second tuning switch
Even, the second tuning switch 112 carries second switch match circuit, the letter of the second switch match circuit by antenna feed point 105
Number input fixed gear carry out signal tuning, specifically, second switch match circuit working condition is equivalent to and is connected to the electricity of 6.8NH
Feel shelves.The ground signalling end of signal input electronic element setting area 113 after the tuning of the second tuning switch 112, and then will
Signal ground processing.First tuning switch 111 and the second tuning switch 112 are connected to fixed capacitor shelves and electricity by the design
Feel shelves makes antenna load close to 50 Europe, so that antenna be made to reach best radio-frequency performance by constantly debugging.Here first
Tuning switch 111 and the second tuning switch 112 need in running order simultaneously, the common effective tuning realized to low frequency signal,
Reach the best radio-frequency performance of antenna.
In the present embodiment, using the design of 102 connected double-layer panel of unipole antenna and via hole, antenna is greatly reduced
Size makes the Antenna Design can satisfy various PCB main boards 11.The reduction of its space of lines, improve circuit board 100 utilizes effect
Rate increases the integrated level of circuit board 100, more electronic components can be extended on PCB main board 11, to the electricity of high integration
Road plate 100 is most important.In addition, realizing the frequency bandwidth of antenna using the cooperating of two tuning switch, reach work frequency
Point is 824-960MHZ and 1710-2690MHZ, meets domestic the whole network and leads to demand.By antenna on the basis of guaranteeing frequency bandwidth
Size accomplishes to be miniaturized, it is made to be applicable in more industry requirements.
Simulation calculating is carried out in conjunction with scheme provided in this embodiment, shown in the voltage standing wave ratio figure referring to Fig. 5, the first tuning
The first switch match circuit series connection 4.3PF capacitor shelves of switch 111, the second switch match circuit of the second tuning switch 112 is simultaneously
Join the inductance of 6.8NH, standing wave ratio is with frequency variation diagram as shown in figure 5, the horizontal axis point corresponding frequency band 824- of 7 Mark
Standing wave ratio 17.0244 of 960MHZ and 1710-2690MHZ, Mark1 the respective antenna frequency in 824MHZ, Mark2 corresponds to day
Line frequency standing wave ratio 3.6850 in 894MHZ, Mark3 corresponding is that standing wave ratio of the antenna frequencies in 880MHZ is
6.3968, Mark4 it is corresponding be antenna frequencies the standing wave ratio of 960MHZ be 9.7827, Mark5 it is corresponding be antenna frequencies
In the standing wave ratio 2.2442 of 1710MHZ, Mark6 corresponding is standing wave ratio 1.2424 of the antenna frequencies in 2170MHZ,
Mark7 corresponding is antenna frequencies standing wave ratio 2.2379 in 2690MHZ.It as can be seen from the figure, should when Mark5-Mark7
The standing-wave ratio of antenna reflects corresponding high-frequency signal, antenna gain is preferable, better performances less than 3.
Referring to 3D antenna pattern of the antenna in 824MHZ that Fig. 6-Fig. 9, Fig. 6 are in the present embodiment, Fig. 7 is this implementation
3D antenna pattern of the antenna in 960MHZ in example, Fig. 8 are 3D radiation side of the antenna in 1710MHZ in the present embodiment
Xiang Tu, Fig. 9 are 3D antenna pattern of the antenna in 2690MHZ in the present embodiment.It is known from the antenna 3D radiation diagram of Fig. 6
824MHZ frequency point gain is -0.15856dBi, be in 960MHZ frequency point gain known to Fig. 7 antenna 3D radiation diagram -
2.7322dBi knows that in 1710MHZ frequency point gain be 1.0dBi from Fig. 8 antenna 3D radiation diagram, can from Fig. 9 antenna 3D radiation diagram
Know that in 2690MHZ frequency point gain be 3.1509dbi.It can be seen that the gain of the best frequency point 2690MHZ of gain referring to Fig. 6-Fig. 9
3.1509dbi, the existing yield value -2-+2dbi in the industry of comparison, the frequency point gain advantageous effect is obvious, and other frequency point gains
Value is superior to existing antenna gain.
It can be seen that while antenna described in the present embodiment is based on miniaturized design from above-mentioned simulation calculating data and meet width
The working range of frequency, working frequency points are 824-960MHZ and 1710-2690MHZ, existing China Mobile's frequency range are as follows: 1880-
1900MHz,2320-2370MHz,2575-2635MHz；(bands:39bands:40bands:41), China Unicom frequency range are as follows:
2300-2320MHz,2555-2575MHz；(bands:40bands:41), China Telecom's frequency range are as follows: 2370-2390MHz,
2635-2655MHz；(bands:40bands:41), frequency range known to China Unicom FDD are as follows: 1800MHz (Band:3), China's electricity
Believe frequency range known to FDD are as follows: 2100MHz (Band:1), compared to Antenna Operation frequency range 824-960MHZ described in the present embodiment and
1710-2690MHZ, this antenna is easier to realize all standing of China's frequency band signals, and can be seen that high frequency letter from emulation data
Number coverage effect can be more preferable.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (10)
1. a kind of antenna is transmitted for signal, which is characterized in that the antenna is unipole antenna, and the antenna includes being set to
Antenna body on PCB main board, the antenna body include antenna cabling；
The antenna cabling is distributed in the top and bottom of PCB main board, and the antenna cabling on the top and bottom passes through setting
Via hole in antenna cabling, which is realized, to be connected with each other, and the antenna cabling of the top and bottom includes high-frequency signal section, low frequency
Signal segment and current distribution section, current distribution section, high-frequency signal section and the low frequency signal section edge of the top and bottom
The length direction of PCB main board is arranged successively.
2. antenna according to claim 1, which is characterized in that be provided with electronic component setting area, institute on the PCB main board
One end of the current distribution section nearby electron element setting area of the top surface of PCB main board is stated, low frequency signal section is located remotely from electronics
One end of element setting area, high-frequency signal section is between low frequency signal section and current distribution section；The high-frequency signal section is used
In emitting and receiving high frequency signal, the low frequency signal section for transmitting and receiving use by low frequency signal, the current distribution section
It is distributed in adjustment signal bandwidth and antenna current.
3. antenna according to claim 2, which is characterized in that the current distribution section of the top surface is in jointly with high-frequency signal section
Existing " C " shape, the low frequency signal section is individually in " G " shape；High-frequency signal section and current distribution section positioned at the bottom surface are in jointly
Existing " 2 " shape, the low frequency signal section is individually in inverse-T-shaped.
4. antenna according to claim 2, which is characterized in that be provided with feeding point and ground feed point, institute in the antenna cabling
It states feeding point and the current distribution section of antenna cabling of top surface that ground feed point is set to PCB main board is arranged close to the electronic component
The side in region.
5. antenna according to claim 4, which is characterized in that be additionally provided with the first tuning switch and on the PCB main board
Two tuning switch, the electronic component setting area further include feed port and ground signalling port；First tuning switch
One end be electrically connected with the feeding point of the antenna cabling, the other end and the feed port of the electronic component setting area are electrically connected
It connects, first tuning switch is for the signal transmission between antenna and electronic component setting area；Second tuning switch
One end be electrically connected with the ground feed point of the antenna cabling, the other end and the ground signalling port of electronic component setting area are electrically connected
It connects, first tuning switch and the second tuning switch work at the same time, to be tuned jointly to low frequency signal.
6. antenna according to claim 5, which is characterized in that the electronic component setting area further includes antenna rf electricity
The feed port on road, the electronic component setting area is located on the antenna rf circuit, first tuning switch and institute
State the feed port electrical connection of electronic component setting area radio circuit.
7. antenna according to claim 5, which is characterized in that first tuning switch and the second tuning switch have itself
Switched matching circuit, and the first tuning switch is correspondingly connected with first switch match circuit, the second tuning switch is correspondingly connected with second
Switched matching circuit；The 4.3PF capacitor shelves of the corresponding first switch match circuit of first tuning switch are connected, and second adjusts
The 6.8NH inductance shift parallel connection of the humorous corresponding second switch match circuit of switch, first switch match circuit and second switch
It is mutually indepedent with circuit.
8. antenna according to claim 2, which is characterized in that the PCB main board is having a size of 25mm*20mm*1.2mm；Electronics
Element setting area is having a size of 20mm*10mm*1.2mm；Antenna cabling overall dimensions are 20mm*10mm*1.2mm.
9. antenna according to claim 2, which is characterized in that be equipped between the electronic component setting area and antenna cabling
Antenna headroom area, the width at least 5mm in the antenna headroom area.
10. a kind of circuit board, it is characterised in that: including PCB main board and any antenna of claim 1-9, the PCB main board
On be provided with antenna body, electronic component setting area, the first tuning switch, the second tuning switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822026240.5U CN209183725U (en) | 2018-12-04 | 2018-12-04 | A kind of antenna and the circuit board with the antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822026240.5U CN209183725U (en) | 2018-12-04 | 2018-12-04 | A kind of antenna and the circuit board with the antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209183725U true CN209183725U (en) | 2019-07-30 |
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|---|---|---|---|
| CN201822026240.5U Active CN209183725U (en) | 2018-12-04 | 2018-12-04 | A kind of antenna and the circuit board with the antenna |
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| CN (1) | CN209183725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115117597A (en) * | 2021-03-17 | 2022-09-27 | 北京小米移动软件有限公司 | Antenna structure and terminal equipment |
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2018
- 2018-12-04 CN CN201822026240.5U patent/CN209183725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115117597A (en) * | 2021-03-17 | 2022-09-27 | 北京小米移动软件有限公司 | Antenna structure and terminal equipment |
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