CN108899635A - A kind of frequency selects structure and its design method, the built-in antenna communication apparatus comprising it - Google Patents
A kind of frequency selects structure and its design method, the built-in antenna communication apparatus comprising it Download PDFInfo
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- CN108899635A CN108899635A CN201810657582.9A CN201810657582A CN108899635A CN 108899635 A CN108899635 A CN 108899635A CN 201810657582 A CN201810657582 A CN 201810657582A CN 108899635 A CN108899635 A CN 108899635A
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- metal arm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
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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
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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Abstract
The present invention provides a kind of frequencies to select structure and its design method, comprising its built-in antenna communication apparatus.Frequency selects the structure to include：Frequency choosing construction, frequency choosing are configured to centrosymmetric structure, the subelement including several about its own central symmetry point symmetry；Subelement includes orthogonal first metal arm and the second metal arm, and the first metal arm extends along first direction towards the second metal arm in central symmetry point；Second metal arm extends in a second direction in the extension end of the first metal arm.The present invention has lacked shielding case compared with prior art, improves the reliability connected between part of appliance, realizes working frequency range and can be smoothly through frequency and select structure, and can be effectively suppressed to other band interference signals in addition to working frequency range.
Description
Technical field
The present invention relates to electronic communication fields more particularly to a kind of frequency to select structure and its design method, comprising built in it
Antenna communication apparatus.
Background technique
It, usually can be due to receiving other frequency range electromagnetic waves except itself working frequency range in the wireless devices such as router
Signal interferes deterioration to self performance.Meanwhile itself generate some noise signals can by external radiation to surrounding its
He interferes electronic equipment, and this phenomenon is known as electromagnetic interference (Electromagnetic Interference, abbreviation
EMI).The method for solving EMI at present is started with from the radiation intensity etc. that shielding case is arranged in mainboard or reduces radiation source mostly.But
These methods have some limitations, and effect is limited.
Chinese patent CN201320408021.8 discloses a kind of electromagnetic screen.The utility model discloses a kind of electricity
Magnetic shielding device belongs to a kind of screening arrangement, suitable for communication apparatus, wherein including shielding case made of a conductive material；
Having been equipped with the individual screen structure for predetermined device or not having for shielding processing is needed in shielding case covering communication equipment
There is the shielding area on the pcb board of assembly shielding construction；Shielding case is by being set to shielding area edge and portraying shielding area
The connection structure of shape connect and is connected with pcb board；The ground of connection structure and pcb board is electrically connected；On shielding case and pcb board both
The shell conducting of the device of the shielding construction and/or generation interference deposited.But part of appliance is increased, reliability can reduce.
Summary of the invention
The object of the present invention is to provide a kind of frequencies to select structure and its design method, comprising its built-in antenna communication apparatus,
Compared with prior art, lack shielding case, improved the reliability connected between part of appliance, realizes working frequency range energy
It is smoothly through frequency and selects structure, and other band interference signals in addition to working frequency range can be effectively suppressed.
Technical solution provided by the invention is as follows：
A kind of frequency selects structure, which is characterized in that including：
Frequency choosing construction, frequency choosing are configured to centrosymmetric structure, including several are about its own central symmetry point pair
The subelement of title；
The subelement includes orthogonal first metal arm and the second metal arm, and first metal arm is in described
Heart symmetric points extend along first direction towards second metal arm；Second metal arm is in the extension of first metal arm
Extend in a second direction at end.
In the technical program, when selecting structure by electromagnetic wave irradiation frequently, induced current can be generated on metal surface,
Under specific electromagnetic wave frequency, the scattered field of induced current excitation cannot offset original electromagnetic field, so that electromagnetism wave energy is successfully
By selecting structure frequently；And under other wave frequencies, the scattered field of induced current excitation is offset with original electromagnetic field,
Electromagnetic wave is selected by frequency and can be effectively suppressed when structure.The program has lacked shielding case compared with prior art, improves and sets
The reliability connected between standby component realizes working frequency range and can be smoothly through frequency and selects structure, and in addition to working frequency range
Other band interference signals can be effectively suppressed.
Further, the frequency selects structure to meet following relational expression：
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and λ is certain of working frequency range
Wavelength corresponding to a frequency.
In the technical program, the extended length of the extended length of the first metal arm and the second metal arm meets above-mentioned formula just
It is able to achieve the frequency of special frequency channel and structure is selected by frequency, and when frequency of other frequency ranges selects structure by frequency, is effectively pressed down
System.
Further, the subelement further includes third metal arm；The third metal arm is in the second metal arm extension end
Opposite direction along first direction extends；Wherein, the third metal arm of a subelement is adjacent with subelement described in this
Gap is equipped between another the described subelement being arranged.
In the technical program, 1) third metal arm is increased on the basis of the first metal arm and the second metal arm, thus
So that frequency-selective surfaces product increases, select effect more preferable frequently；2) in addition, the third metal arm of subelement is adjacent with the subelement sets
Between another subelement set be equipped with gap, avoid metal surface because the induced current that electromagnetic wave generates mutually is upset cannot
Realize the function of inhibiting electromagnetic interference.
Further, the frequency selects structure to meet following relational expression：
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and C is third metal arm
Extended length, λ are wavelength corresponding to some frequency of working frequency range.
In the technical program, the extended length of the first metal arm, the extended length of the second metal arm and third metal arm
Extended length, which meets above-mentioned formula and can be achieved with the frequency of special frequency channel, selects structure by frequency, and the frequency of other frequency ranges passes through frequency
Selecting can effectively be inhibited when structure.
Further, the subelement further includes the 4th metal arm；4th metal arm on the first metal arm along
The opposite direction of second direction extends；The distance value of 4th metal arm and the central symmetry point is less than second metal arm
With the distance value of the central symmetry point, and the extended length of the 4th metal arm be less than first metal arm extension it is long
Degree.
In the technical program, the 4th metal arm is increased on the basis of the first metal arm and the second metal arm, to make
It obtains frequency-selective surfaces product to increase, selects effect more preferable frequently.
Further, the frequency selects structure to meet following relational expression：
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and D is the 4th metal arm
Extended length, E are the distance value of the 4th metal arm and central symmetry point, and λ is wavelength corresponding to some frequency of working frequency range.
In the technical program, the extended length of the first metal arm, the extended length of the second metal arm and the 4th metal arm
Extended length, which meets above-mentioned formula and can be achieved with the frequency of special frequency channel, selects structure by frequency, and the frequency of other frequency ranges passes through frequency
Selecting can effectively be inhibited when structure.
Further, the subelement further includes the 4th metal arm；4th metal arm on the first metal arm along
The opposite direction of second direction extends；The distance value of 4th metal arm and the central symmetry point is less than second metal arm
With the distance value of the central symmetry point, and the extended length of the 4th metal arm be less than first metal arm extension it is long
Degree；
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and C is third metal arm
Extended length, D are the extended length of the 4th metal arm, and E is the distance value of the 4th metal arm and central symmetry point, and λ is work frequency
Wavelength corresponding to some frequency of section.
In the technical program, 1) the 4th is increased on the basis of the first metal arm, the second metal arm and third metal arm
Metal arm selects effect more preferable frequently so that frequency-selective surfaces product is bigger；2) extended length of the first metal arm, the second gold medal
The extended length for belonging to the extended length of arm, the extended length of third metal arm and the 4th metal arm, which meets above-mentioned formula, can be achieved with
The frequency of special frequency channel selects structure by frequency, and the frequency of other frequency ranges can effectively be inhibited when structure by selecting frequently.
Further, the angle of first metal arm of the two neighboring subelement is preset value, the preset value
Range be 30 °~90 °；And/or further include the carrier constructed for carrying the frequency choosing, the carrier and the frequency select structure
Make integrated molding.
In the technical program, 1) angle of the first metal arm of two neighboring subelement is preset value, provides a variety of frequencies
The pattern of structure is selected, versatility is stronger, and the scope of application is wider；2) carrier and frequency choosing construction pass through laser direct structuring technique one
Molding, it is reliable and stable.
The present invention also provides a kind of built-in antenna communication apparatus, including：
Shell, antenna element, and, frequency described in above-mentioned any one selects structure；
The antenna element is located in the inner space of the shell；
The frequency selects the structure to include：Frequency choosing construction, frequency choosing are configured to centrosymmetric structure, including several are about it
The symmetrical subelement of center symmetric points；The subelement includes orthogonal first metal arm and the second metal arm, institute
The first metal arm is stated to extend along first direction towards second metal arm in the central symmetry point；Second metal arm in
Extend in a second direction at the extension end of first metal arm；
The frequency selects structure to be layed in the shell.
In the technical program, when selecting structure by electromagnetic wave irradiation frequently, induced current can be generated on metal surface,
Under specific electromagnetic wave frequency, the scattered field of induced current excitation cannot offset original electromagnetic field, so that electromagnetism wave energy is successfully
By selecting structure frequently；And under other wave frequencies, the scattered field of induced current excitation is offset with original electromagnetic field,
Electromagnetic wave is selected by frequency and can be effectively suppressed when structure.The program has lacked shielding case compared with prior art, improves and sets
The reliability connected between standby component realizes working frequency range and can be smoothly through frequency and selects structure, and in addition to working frequency range
Other band interference signals can be effectively suppressed.
The present invention also provides the design methods that a kind of frequency selects structure, which is characterized in that including step：
Determine that the frequency selects structure centre symmetric points；
Design subelement：Extend to form the first metal arm along first direction in the central symmetry point, in first gold medal
The extension end for belonging to arm is extended the second metal arm of formation in a second direction, obtains the subelement that the frequency selects structure, wherein described the
One direction and the second direction are vertical；
The subelement is arranged around the central symmetry point, so that it is center symmetrical junction that the frequency, which selects structure,
Structure.
In the technical program, when selecting structure by electromagnetic wave irradiation frequently, induced current can be generated on metal surface,
Under specific electromagnetic wave frequency, the scattered field of induced current excitation cannot offset original electromagnetic field, so that electromagnetism wave energy is successfully
By selecting structure frequently；And under other wave frequencies, the scattered field of induced current excitation is offset with original electromagnetic field,
Electromagnetic wave is selected by frequency and can be effectively suppressed when structure.The program has lacked shielding case compared with prior art, improves and sets
The reliability connected between standby component realizes working frequency range and can be smoothly through frequency and selects structure, and in addition to working frequency range
Other band interference signals can be effectively suppressed.
A kind of frequency provided by the invention selects structure and its design method, the built-in antenna communication apparatus comprising it, being capable of band
Carry out following at least one beneficial effect：
1, in the present invention, when selecting structure by electromagnetic wave irradiation frequently, induced current can be generated on metal surface, in spy
Determine under wave frequency, the scattered field of induced current excitation cannot offset original electromagnetic field, so that electromagnetism wave energy is successfully led to
Structure is selected in overfrequency；And under other wave frequencies, the scattered field of induced current excitation is offset with original electromagnetic field, electricity
Magnetic wave is selected by frequency and can be effectively suppressed when structure.The program has lacked shielding case compared with prior art, improves equipment
The reliability connected between component realizes working frequency range and can be smoothly through frequency and select structure, and in addition to working frequency range
Other band interference signals can be effectively suppressed.
2, in the present invention, increase third metal arm and/or the 4th metal on the basis of the first metal arm, the second metal arm
Arm selects effect more preferable frequently so that frequency-selective surfaces product is bigger.
3, in the present invention, the extension of the extended length of the first metal arm, the extended length of the second metal arm, third metal arm
Length and the extended length of the 4th metal arm, which meet formula related with wavelength, can be achieved with the frequency of special frequency channel by selecting frequently
Structure, and the frequency of other frequency ranges by frequency select structure when be effectively suppressed.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, structure is selected to a kind of frequency and its is set
Meter method, above-mentioned characteristic, technical characteristic, advantage and its implementation comprising its built-in antenna communication apparatus give further
Explanation.
Fig. 1 is the first example structure schematic diagram that frequency of the invention selects structure；
Fig. 2 is second of example structure schematic diagram that frequency of the invention selects structure；
Fig. 3 is the third example structure schematic diagram that frequency of the invention selects structure；
Fig. 4 is the 4th kind of example structure schematic diagram that frequency of the invention selects structure；
Fig. 5 is the 5th kind of example structure schematic diagram that frequency of the invention selects structure；
Fig. 6 is the 6th kind of example structure schematic diagram that frequency of the invention selects structure；
Fig. 7 is the 7th kind of example structure schematic diagram that frequency of the invention selects structure；
Fig. 8 is the 8th kind of example structure schematic diagram that frequency of the invention selects structure；
Fig. 9 is the 9th kind of example structure schematic diagram that frequency of the invention selects structure；
Figure 10 is the reflection coefficient graph of relation for the working frequency range that frequency of the invention selects structure and communication apparatus；
Figure 11 is the transmission coefficient graph of relation for the working frequency range that frequency of the invention selects structure and communication apparatus.
Drawing reference numeral explanation：
1. frequency selects structure, 11. frequency choosings are constructed, 110. central symmetry points, 111. first subelements, 112. second subelements,
113. third subelement, 114. the 4th subelements, 1111. first metal arms, 1112. second metal arms, 1113. third metals
Arm, 1114. the 4th metal arms, 1115. first directions, 1116. second directions, the extended length of the first metal arm of A., B. second
The extended length of metal arm, the extended length of C. third metal arm, the extended length of the 4th metal arm of D., the 4th metal arm of E. with
The distance value of central symmetry point, wavelength corresponding to some frequency of λ working frequency range, two neighboring the first metal of subelement of α
Angle between arm, 12. carriers, 21. shells.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
Component only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not only indicated
" only this ", can also indicate the situation of " more than one ".
In example 1, as shown in figs 1-9, a kind of frequency selects structure, including：
Frequency choosing construction 11, frequency choosing construction 11 is center symmetrical structure, including several are about its own central symmetry point 110
Symmetrical subelement (the first subelement 111, the second subelement 112, third subelement 113 or the 4th subelement 114)；
First subelement 111 includes orthogonal first metal arm 1111 and the second metal arm 1112, the first metal arm
1111 extend along first direction 1115 towards the second metal arm 1112 in central symmetry point 110；Second metal arm 1112 is in first
1116 extension in a second direction of the extension end of metal arm 1111.
Specifically, when selecting structure 1 by electromagnetic wave irradiation frequently, induction can be generated on metal surface in the present embodiment
Electric current, under specific electromagnetic wave frequency, the scattered field of induced current excitation cannot offset original electromagnetic field, thus electromagnetism wave energy
It is smoothly through frequency and selects structure 1；And under other wave frequencies, the scattered field and original electromagnetic field of induced current excitation are sent out
Raw to offset, electromagnetic wave is selected by frequency and can be effectively suppressed when structure 1.The program has lacked shielding case compared with prior art,
The reliability connected between part of appliance is improved, working frequency range is realized and can be smoothly through frequency and select structure 1, and to removing work
Other band interference signals other than frequency range can be effectively suppressed.
In example 2, as shown in Fig. 1,2,7,8,9, on the basis of example 1, two neighboring subelement (such as
One subelement 111 and third subelement 113) the angle α of the first metal arm 1111 be preset value, the range of preset value is 30 °
~90 °.It preferably, further include the carrier 12 for constructing 11 for carrying frequency choosing, 11 integrated molding of carrier 12 and frequency choosing construction.It is worth
Illustrate, when selecting structure 1 frequently, there are when carrier 12, frequency choosing construction 11 preferably passes through LDS technique (laser direct structuring technique
(Laser Direct structuring)) it forms, the quantity of the frequency choosing construction 11 on carrier 12 can be one or more；
When frequency choosing construction 11 is multiple, multiple frequency choosing constructions 11 are arranged on carrier 12 in array manner, and adjacent frequency choosing construction 11
Between be equipped with gap, as shown in Figure 9.Certainly, in practical applications, when selecting structure 1 there is no carrier 12 frequently, can by pouring or
Printing is processed, as shown in Figure 2.Preferably, the first metal arm 1111 and the second metal arm 1112 meet following formula：
In formula：A is the extended length of the first metal arm 1111, and B is the extended length of the second metal arm 1112, and λ is work
Wavelength corresponding to some frequency of frequency range.
Specifically, in the present embodiment, 1) the of two neighboring subelement (the first subelement 111 and third subelement 113)
The angle of one metal arm 1111 is preset value, provides the pattern that a variety of frequencies select structure, versatility is stronger, and the scope of application is wider；
2) carrier 12 and frequency choosing construction 11 are integrally formed by laser direct structuring technique, reliable and stable；3) by the first metal arm
The specific restriction of 1111 extended length and the extended length of the second metal arm 1112, to realize the electromagnetism wave energy of special frequency channel
Pass through, and the electromagnetic wave of other frequency ranges can be effectively suppressed when structure 1 by selecting frequently.
In the third embodiment, as shown in figure 3, on the basis of embodiment one or two, subelement 111 further includes third metal
Arm 1113；Third metal arm 1113 extends in 1112 extension end of the second metal arm along the opposite direction of first direction 1115；Wherein, sub
Gap is equipped between another subelement 113 that the third metal arm 1113 of unit 111 is disposed adjacent with the subelement 111.It is excellent
Selection of land, the first metal arm 1111, the second metal arm 1112 and third metal arm 1113 meet following formula：
In formula：A is the extended length of the first metal arm 1111, and B is the extended length of the second metal arm 1112, and C is third
The extended length of metal arm 1113, λ are wavelength corresponding to some frequency of working frequency range.
Specifically, in the present embodiment, 1) is increased on the basis of the first metal arm 1111 and the second metal arm 1112
Three metal arms 1113 select effect more preferable frequently so that frequency-selective surfaces product increases；2) in addition, the of the first subelement 111
It is equipped with gap between the third subelement 113 that three metal arms 1113 are disposed adjacent with first subelement 111, avoids metal surface
It can not achieve the function of inhibition electromagnetic interference because the induced current that electromagnetic wave generates mutually is upset；3) first metal arm 1111
The extended length of extended length, the extended length of the second metal arm 1112 and third metal arm 1113 meets above-mentioned formula can be real
The frequency of existing special frequency channel selects structure 1 by frequency, and the frequency of other frequency ranges can be effectively suppressed when structure 1 by selecting frequently.
In example IV, as shown in figure 4, subelement 111 further includes the 4th metal on the basis of embodiment one or two
Arm 1114；4th metal arm 1114 is in the opposite direction extension on the first metal arm 1111 along second direction 1116；4th metal
The distance value E of arm 1114 and central symmetry point 110 less than the second metal arm 1112 and central symmetry point 110 distance value A, and the
Extended length A of the extended length D of four metal arms 1114 less than the first metal arm 1111.Preferably, the first metal arm 1111,
Two metal arms 1112 and the 4th metal arm 1114 meet following formula：
In formula：A is the extended length of the first metal arm 1111, and B is the extended length of the second metal arm 1112, and D is the 4th
The extended length of metal arm 1114, E are the distance value of the 4th metal arm 1114 and central symmetry point 110, and λ is certain of working frequency range
Wavelength corresponding to a frequency.
Specifically, in the present embodiment, 1) is increased on the basis of the first metal arm 1111 and the second metal arm 1112
Four metal arms 1114 select effect more preferable frequently so that frequency-selective surfaces product increases；2) extension of the first metal arm 1111 is long
Degree, the extended length of the second metal arm 1112 and the 4th metal arm 1114 extended length meet above-mentioned formula can be achieved with it is specific
The frequency of frequency range selects structure 1 by frequency, and the frequency of other frequency ranges can be effectively suppressed when structure 1 by selecting frequently.
In embodiment five, as shown in figure 5, subelement 111 further includes the 4th metal arm on the basis of embodiment three
1114；4th metal arm 1114 is in the opposite direction extension on the first metal arm 1111 along second direction 1116；4th metal arm
The 1114 distance value A with the distance value E of central symmetry point 110 less than the second metal arm 1112 and central symmetry point 110, and the 4th
Extended length A of the extended length D of metal arm 1114 less than the first metal arm 1111.Preferably, the first metal arm 1111, second
Metal arm 1112, third metal arm 1113 and the 4th metal arm 1114 meet following formula：
In formula：A is the extended length of the first metal arm 1111, and B is the extended length of the second metal arm 1112, and C is third
The extended length of metal arm 1113, D are the extended length of the 4th metal arm 1114, and E is the 4th metal arm 1114 and central symmetry
The distance value of point 110, λ are wavelength corresponding to some frequency of working frequency range.
Specifically, in the present embodiment, 1) in the first metal arm 1111, the second metal arm 1112 and third metal arm 1113
On the basis of increase the 4th metal arm 1114 so that frequency-selective surfaces product it is bigger, select effect more preferable frequently；2) the first metal
The extended length of arm 1111, the extended length of the second metal arm 1112, the extended length of third metal arm 1113 and the 4th metal
The extended length of arm 1114, which meets above-mentioned formula and can be achieved with the frequency of special frequency channel, selects structure 1 by frequency, and other frequency ranges
Frequency is selected by frequency and can be effectively suppressed when structure 1.
Illustratively, as shown in Figure 6 and 9, carrier 12 use relative dielectric constant for 2.8 ABS (Acrylonitrile
Butadiene Styrene) plastics, thickness 2mm, frequency choosing construction 11 is center symmetrical structure, metal arm (i.e. the first metal arm
1111, the second metal arm 1112, third metal arm 1113 and the 4th metal arm 1114) trace width be 1 ± 0.5mm.12
Frequency choosing construction 11 is arranged on carrier 12 in 4 × 3 array formats, and frequency choosing construction 11 (is actually being answered with carrier 12 integrated molding
In, the machine-shaping of LDS technique can be passed through)；Frequency choosing construction 11 is equipped with gap, the first gold medal of two neighboring subelement each other
Belong to arm 1111 to be mutually perpendicular to；And first metal arm 1111 extended length A=13 ± 1mm, the extension of the second metal arm 1112 is long
Spend B=13.5 ± 1mm, the extended length C=9 ± 1mm, the extended length D=6 of the 4th metal arm 1114 of third metal arm 1113
± 1mm, distance value E=8.5 ± 1mm of the 4th metal arm 1114 and central symmetry point 110；The working frequency range of communication apparatus：2.4
~2.5GHz.
By selecting structure 1 and working frequency range to carry out analogue simulation this exemplary frequency, analogue data is fitted, is obtained
Frequency selects the reflection coefficient relation table of the working frequency range of structure and communication apparatus as shown in Figure 10 and table 1；And frequency selects structure and leads to
The transmission coefficient relation table of the working frequency range of equipment is interrogated as shown in Figure 11 and table 2.
1 frequency of table selects the reflection coefficient relation table of the working frequency range of structure and communication apparatus
| Frequency (GHz) | Reflection coefficient |
| 2.4 | -25.5 |
| 2.5 | -22.4 |
From Figure 10 and table 1：When the working frequency range of communication apparatus is 2.4~2.5GHz, the reflection of electromagnetic wave is smaller；
And in other frequency ranges, reflection of electromagnetic wave is larger.
2 frequency of table selects the transmission coefficient relation table of the working frequency range of structure and communication apparatus
| Frequency (GHz) | Transmission coefficient |
| 2.4 | -0.06 |
| 2.5 | -0.07 |
From Figure 11 and table 2：When the working frequency range of communication apparatus is 2.4~2.5GHz, the transmission performance of electromagnetic wave
Preferably；And in other frequency ranges, electromagnetic transmission performance is poor.
In summary, frequency of the invention select structure 1 be suitable for working frequency range be 2.4~2.5GHz communication apparatus (such as
Wifi, bluetooth, Zigbee etc.).Analogue data shows the equipment that present invention frequency selects structure 1 to be particularly suitable for built-in antenna.It can be with
Pass through the frequency band signals of 2.4~2.5GHz of working frequency range of the equipment of built-in antenna effectively, and other frequency band signals are suppressed,
Realizing reduces electronic equipment by the function of electromagnetic interference.
Certainly, in practical applications, by adjusting parameters such as the materials and/or A, B, C, D, E for selecting structure 1 frequently frequency is selected
Structure 1 is suitable for other working frequency range, does not just repeat one by one here.
In embodiment six, as shown in figs 1-9, a kind of built-in antenna communication apparatus, including：Shell 21, antenna element, with
And above-mentioned any one frequency selects structure 1；Antenna element is located in the inner space of shell 21；Frequency selects the structure 1 to include：Frequency selects structure
Make 11, frequency choosing construction 11 is center symmetrical structure, including several are about its own symmetrical subelement of central symmetry point 110
(the first subelement 111, the second subelement 112, third subelement 113 or the 4th subelement 114)；Subelement includes mutually hanging down
Straight the first metal arm 1111 and the second metal arm 1112, the first metal arm 1111 is in central symmetry point 110 along first direction
1115 extend towards the second metal arm 1112；Second metal arm 1112 in the extension end of the first metal arm 1111 in a second direction
1116 extend；Frequency selects structure 1 to be layed in shell 21.
Specifically, when selecting structure 1 by electromagnetic wave irradiation frequently, induction can be generated on metal surface in the present embodiment
Electric current, under specific electromagnetic wave frequency, the scattered field of induced current excitation cannot offset original electromagnetic field, thus electromagnetism wave energy
It is smoothly through frequency and selects structure 1；And under other wave frequencies, the scattered field and original electromagnetic field of induced current excitation are sent out
Raw to offset, electromagnetic wave is selected by frequency and can be effectively suppressed when structure 1.The program has lacked shielding case compared with prior art,
The reliability connected between part of appliance is improved, working frequency range is realized and can be smoothly through frequency and select structure 1, and to removing work
Other band interference signals other than frequency range can be effectively suppressed.Preferably, structure 1 is selected to be layed in shell 21 close to internal empty frequently
Between side surface.Preferably, structure 1 is selected to be paved with entire shell 21 frequently, and two neighboring frequency selects and is equipped with gap between structure 1.
Preferably, structure 1 is selected to be arranged in array frequently.It is worth noting that when selecting structure 1 that there is carrier 12 frequently, then carrier 12 at this time
It can be used as the shell 21 of built-in antenna communication apparatus.
In embodiment seven, a kind of frequency selects the design method of structure, including step：
Determine that frequency selects the central symmetry point 110 of structure 1；
Design subelement (i.e. the first subelement 111, the second subelement 112, third subelement 113, the 4th subelement
114)：Extend in central symmetry point 110 along first direction 1115 and form the first metal arm 1111, in prolonging for the first metal arm 1111
1116 extensions form the second metal arm 1112 to Zhan Duan in a second direction, obtain the subelement that frequency selects structure 1, wherein first direction
1115 and second direction 1116 it is vertical；
Subelement is arranged around central symmetry point 110, so that it is center symmetrical structure that frequency, which selects structure 1,.
Specifically, when selecting structure 1 by electromagnetic wave irradiation frequently, induction can be generated on metal surface in the present embodiment
Electric current, under specific electromagnetic wave frequency, the scattered field of induced current excitation cannot offset original electromagnetic field, thus electromagnetism wave energy
It is smoothly through frequency and selects structure 1；And under other wave frequencies, the scattered field and original electromagnetic field of induced current excitation are sent out
Raw to offset, electromagnetic wave cannot be by selecting structure 1 frequently.The program has lacked shielding case compared with prior art, improves equipment
The reliability connected between component realizes working frequency range and can be smoothly through frequency and select structure 1, and in addition to working frequency range
Other band interference signals can be effectively suppressed.
In embodiment eight, on the basis of embodiment seven, (the first subelement 111 and third are single for two neighboring subelement
The angle α of the first metal arm 1111 of member 113) is preset value, and the range of preset value is 30 °~90 °.It preferably, further include using
In the carrier 12 of carrying frequency choosing construction 11, carrier 12 and frequency choosing construction 11 are integrally formed.Preferably, the first metal arm 1111 and
Two metal arms 1112 meet following formula：
In formula：A is the extended length of the first metal arm 1111, and B is the extended length of the second metal arm 1112, and λ is work
Wavelength corresponding to some frequency of frequency range.
Specifically, in the present embodiment, 1) the of two neighboring subelement (the first subelement 111 and third subelement 113)
The angle of one metal arm 1111 is preset value, provides the pattern that a variety of frequencies select structure, versatility is stronger, and the scope of application is wider；
2) carrier 12 and frequency choosing construction 11 are integrally formed by laser direct structuring technique, reliable and stable；3) by the first metal arm
The specific restriction of 1111 extended length and the extended length of the second metal arm 1112, to realize the electromagnetism wave energy of special frequency channel
Pass through, and the electromagnetic wave of other frequency ranges can be effectively suppressed when structure 1 by selecting frequently.
It further include step on the basis of embodiment seven or eight in embodiment nine：
Design third metal arm 1113：Third metal arm 1113 is in 1112 extension end of the second metal arm along first direction 1115
Opposite direction extend；Wherein, the third metal arm 1113 of the first subelement 111 is disposed adjacent another with first subelement 111
Gap is equipped between one third subelement 113.Preferably, the first metal arm 1111, the second metal arm 1112 and third metal
Arm 1113 meets following formula：
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and C is third metal arm
Extended length, λ are wavelength corresponding to some frequency of working frequency range.
Specifically, in the present embodiment, 1) is increased on the basis of the first metal arm 1111 and the second metal arm 1112
Three metal arms 1113 select effect more preferable frequently so that frequency-selective surfaces product increases；2) the third gold of the first subelement 111
Belong to and be equipped with gap between the third subelement 113 that arm 1113 is disposed adjacent with first subelement 111, avoids metal surface because of electricity
The induced current that magnetic wave generates mutually upsets and can not achieve the function of inhibiting electromagnetic interference；3) extension of the first metal arm 1111
The extended length of length, the extended length of the second metal arm 1112 and third metal arm 1113 meets above-mentioned formula and can be achieved with spy
The frequency for determining frequency range selects structure 1 by frequency, and the frequency of other frequency ranges can be effectively suppressed when structure 1 by selecting frequently.
It further include step on the basis of embodiment seven or eight in embodiment ten：
Design the 4th metal arm 1114：4th metal arm 1114 on the first metal arm 1111 along second direction 1116
Opposite direction extends；The distance value E of 4th metal arm 1114 and central symmetry point 110 is less than the second metal arm 1112 and central symmetry
The distance value A of point 110, and the extended length D of the 4th metal arm 1114 is less than the extended length A of the first metal arm 1111.It is preferred that
Ground, the first metal arm 1111, the second metal arm 1112 and the 4th metal arm 1114 meet following formula：
In formula：A is the extended length of the first metal arm 1111, and B is the extended length of the second metal arm 1112, and D is the 4th
The extended length of metal arm 1114, E are the distance value of the 4th metal arm 1114 and central symmetry point 110, and λ is certain of working frequency range
Wavelength corresponding to a frequency.
Specifically, in the present embodiment, 1) is increased on the basis of the first metal arm 1111 and the second metal arm 1112
Four metal arms 1114 select effect more preferable frequently so that frequency-selective surfaces product increases；2) extension of the first metal arm 1111 is long
Degree, the extended length of the second metal arm 1112 and the 4th metal arm 1114 extended length meet above-mentioned formula can be achieved with it is specific
The frequency of frequency range selects structure 1 by frequency, and the frequency of other frequency ranges can be effectively suppressed when structure 1 by selecting frequently.
It further include step on the basis of embodiment seven, eight, nine or ten in embodiment 11：
Design the 4th metal arm 1114：4th metal arm 1114 on the first metal arm 1111 along second direction 1116
Opposite direction extends；The distance value E of 4th metal arm 1114 and central symmetry point 110 is less than the second metal arm 1112 and central symmetry
The distance value A of point 110, and the extended length D of the 4th metal arm 1114 is less than the extended length A of the first metal arm 1111.It is preferred that
Ground, the first metal arm 1111, the second metal arm 1112, third metal arm 1113 and the 4th metal arm 1114 meet following formula：
In formula：A is the extended length of the first metal arm 1111, and B is the extended length of the second metal arm 1112, and C is third
The extended length of metal arm 1113, D are the extended length of the 4th metal arm 1114, and E is the 4th metal arm 1114 and central symmetry
The distance value of point 110, λ are wavelength corresponding to some frequency of working frequency range.
Specifically, in the present embodiment, 1) in the first metal arm 1111, the second metal arm 1112 and third metal arm 1113
On the basis of increase the 4th metal arm 1114 so that frequency-selective surfaces product it is bigger, select effect more preferable frequently；2) the first metal
The extended length of arm 1111, the extended length of the second metal arm 1112, the extended length of third metal arm 1113 and the 4th metal
The extended length of arm 1114, which meets above-mentioned formula and can be achieved with the frequency of special frequency channel, selects structure 1 by frequency, and other frequency ranges
Frequency is selected by frequency and can be effectively suppressed when structure 1.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of frequency selects structure, which is characterized in that including：
Frequency choosing construction, the frequency choosing is configured to centrosymmetric structure, including several about its own central symmetry point symmetry
Subelement；
The subelement includes orthogonal first metal arm and the second metal arm, and first metal arm is in the center pair
Point is claimed to extend along first direction towards second metal arm；Second metal arm is in the extension end edge of first metal arm
Second direction extends.
2. a kind of frequency according to claim 1 selects structure, it is characterised in that：
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and λ is some frequency of working frequency range
Wavelength corresponding to rate.
3. a kind of frequency according to claim 1 selects structure, it is characterised in that：
The subelement further includes third metal arm；The third metal arm is in the second metal arm extension end along the anti-of first direction
Extend in direction；Wherein, another institute that the third metal arm of a subelement is disposed adjacent with subelement described in this
It states and is equipped with gap between subelement.
4. a kind of frequency according to claim 3 selects structure, it is characterised in that：
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and C is the extension of third metal arm
Length, λ are wavelength corresponding to some frequency of working frequency range.
5. a kind of frequency according to claim 1 selects structure, it is characterised in that：
The subelement further includes the 4th metal arm；4th metal arm is in the negative side on the first metal arm along second direction
To extension；The distance value of 4th metal arm and the central symmetry point is less than second metal arm and the central symmetry
The distance value of point, and the extended length of the 4th metal arm is less than the extended length of first metal arm.
6. a kind of frequency according to claim 5 selects structure, it is characterised in that：
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and D is the extension of the 4th metal arm
Length, E are the distance value of the 4th metal arm and central symmetry point, and λ is wavelength corresponding to some frequency of working frequency range.
7. a kind of frequency according to claim 3 selects structure, it is characterised in that：
The subelement further includes the 4th metal arm；4th metal arm is in the negative side on the first metal arm along second direction
To extension；The distance value of 4th metal arm and the central symmetry point is less than second metal arm and the central symmetry
The distance value of point, and the extended length of the 4th metal arm is less than the extended length of first metal arm；
In formula：A is the extended length of the first metal arm, and B is the extended length of the second metal arm, and C is the extension of third metal arm
Length, D are the extended length of the 4th metal arm, and E is the distance value of the 4th metal arm and central symmetry point, and λ is working frequency range
Wavelength corresponding to some frequency.
8. a kind of frequency described in -7 any one selects structure according to claim 1, it is characterised in that：
The angle of first metal arm of the two neighboring subelement is preset value, the range of the preset value is 30 °~
90°；And/or
It further include the carrier for carrying the frequency choosing construction, the carrier and frequency choosing construction are integrally formed.
9. a kind of built-in antenna communication apparatus, which is characterized in that including：
Shell, antenna element, and, frequency described in the claims 1-8 any one selects structure；
The antenna element is located in the inner space of the shell；
The frequency selects the structure to include：Frequency choosing construction, frequency choosing are configured to centrosymmetric structure, including several are about its own
The subelement of central symmetry point symmetry；The subelement includes orthogonal first metal arm and the second metal arm, and described
One metal arm extends along first direction towards second metal arm in the central symmetry point；Second metal arm is in described
Extend in a second direction at the extension end of first metal arm；
The frequency selects structure to be layed in the shell.
10. the design method that a kind of frequency selects structure, which is characterized in that including step：
Determine that the frequency selects the central symmetry point of structure；
Design subelement：Extend to form the first metal arm along first direction in the central symmetry point, in first metal arm
Extension end extend in a second direction formed the second metal arm, obtain the subelement that the frequency selects structure, wherein the first party
To vertical with the second direction；
The subelement is arranged around the central symmetry point, so that it is center symmetrical structure that the frequency, which selects structure,.
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| CN201810657582.9A CN108899635A (en) | 2018-06-25 | 2018-06-25 | A kind of frequency selects structure and its design method, the built-in antenna communication apparatus comprising it |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084863A (en) * | 2022-08-16 | 2022-09-20 | 国网山西省电力公司电力科学研究院 | Frequency selective surface structure with dual-passband characteristic |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004023A (en) * | 2010-04-27 | 2013-03-27 | 格勒诺布尔综合理工学院 | Surface for filtering a plurality of frequency bands |
| CN103296399A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Antenna housing and antenna system based on metamaterials |
| CN105069235A (en) * | 2015-08-13 | 2015-11-18 | 西安电子科技大学 | Method for extracting equivalent circuit parameter of dual-frequency-band frequency selective surface |
| CN105161857A (en) * | 2015-08-03 | 2015-12-16 | 欧阳征标 | Meta-material film for left-hand circular polarization conversion |
-
2018
- 2018-06-25 CN CN201810657582.9A patent/CN108899635A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004023A (en) * | 2010-04-27 | 2013-03-27 | 格勒诺布尔综合理工学院 | Surface for filtering a plurality of frequency bands |
| CN103296399A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Antenna housing and antenna system based on metamaterials |
| CN105161857A (en) * | 2015-08-03 | 2015-12-16 | 欧阳征标 | Meta-material film for left-hand circular polarization conversion |
| CN105069235A (en) * | 2015-08-13 | 2015-11-18 | 西安电子科技大学 | Method for extracting equivalent circuit parameter of dual-frequency-band frequency selective surface |
Non-Patent Citations (2)
| Title |
|---|
| M. MIAS等: "Tunable multiband frequency selective structure", 《 2005 EUROPEAN MICROWAVE CONFERENCE》 * |
| WANLU LI等: "Novel Frequency Selective Surfaces with compact structure and ultra-wideband response", 《 2012 ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084863A (en) * | 2022-08-16 | 2022-09-20 | 国网山西省电力公司电力科学研究院 | Frequency selective surface structure with dual-passband characteristic |
| CN115084863B (en) * | 2022-08-16 | 2022-11-11 | 国网山西省电力公司电力科学研究院 | Frequency selective surface structure with dual-passband characteristic |
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Application publication date: 20181127 |