CN206349513U - A kind of single trap ultra-wideband monopole antenna - Google Patents
A kind of single trap ultra-wideband monopole antenna Download PDFInfo
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- CN206349513U CN206349513U CN201720021231.XU CN201720021231U CN206349513U CN 206349513 U CN206349513 U CN 206349513U CN 201720021231 U CN201720021231 U CN 201720021231U CN 206349513 U CN206349513 U CN 206349513U
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Abstract
The utility model discloses a kind of single trap ultra-wideband monopole antenna, including medium substrate, the lower surface of medium substrate is provided with earth plate, and the upper surface of medium substrate, which is provided with radiation patch and the microstrip feed line being connected with radiation patch, microstrip feed line, is etched with band resistance resonant element；Radiation patch bottom offers the open-work of transmitted radiation paster.Single trap ultra-wideband monopole antenna of the present utility model etches band resistance resonant element on microstrip feed line, trap characteristic is good, it can effectively suppress interfering for radio ultra wide band system and wlan system, and the deterioration of the antenna radiation characteristics caused by avoiding by the way of fluting is etched in radiation patch.Band resistance resonant element it is simple in construction, it is compact compact, be easy to integrated, will not additionally increase the size of whole antenna, enable the antenna to realize miniaturization.The antenna has the advantages that bandwidth, size are small, cost is low, easy processing, there is good directional diagram in whole frequency band range.
Description
Technical field
The utility model belongs to antenna technical field, and in particular to a kind of single trap ultra-wideband monopole antenna.
Background technology
Ultra wide band (UWB, Ultra-Wide Band) technology is a kind of new wireless communication technology, according to the United States Federal
The regulation of Federal Communications Commission (FCC, Federal Communications Commission), the frequency range of UWB communications is 3.1GHz
~10.6GHz.But, this bandwidth contains current wireless Local Area Network (WLAN) 5.2GHz up to 7.5GHz frequency range
(5.15GHz~5.35GHz) and 5.8GHz (5.725GHz~5.825GHz) working frequency.In order to avoid these frequency band signals
Interference, it is necessary to ultra-wideband antenna produces blocking on the frequency band of 5GHz~6GHz scopes, i.e., with trap (band resistance) characteristic.Separately
Outside, current communication networks are increasingly intended to miniaturization and Highgrade integration, this also the Miniaturization Design of antenna is proposed compared with
High requirement.
Plane single pole sub antenna is as an important kind in ultra-wideband antenna, because its is simple in construction, and low cuts open
The characteristics such as face, low cost, broadband, omnidirectional radiation, in short distance radio communication system, are obtained a wide range of applications.
The current sub- ultra-wideband antenna of planar monopole realizes that the method for trap function mainly has two kinds：(1) antenna fluting or
Spurious element formation resonance structure is loaded, such as Chinese Patent Application No. discloses a kind of tool for 201510218287.X patent application
There is band to fall into the ultra-wideband monopole antenna of characteristic, the antenna etches H-shaped groove and cross bath in radiation patch, so that
Two frequency bands of 3.3GHz~3.7GHz and 3.7GHz~4.2GHz produce band and fall into characteristic.This method is by aerial radiation paster
Upper etching gap of different shapes, then adjusts the size in gap, is allowed to be equal to the centre frequency corresponding wavelength that needs suppress
A quarter or half, you can introduce band-stop response in corresponding centre frequency.The shortcoming of this design is in antenna spoke
The generation of higher mode can be caused by penetrating part fluting, so that (antenna direction function graft is represented as day antenna radiation pattern
The directional diagram of line) in high band distortion；The flow path of surface current is changed simultaneously, also increases the cross polarization of antenna so that
Directional diagram deteriorates；(2) bandreject filtering design is carried out on feeder line, such as Chinese Patent Application No. is 201410809770.0 patent
Application discloses a kind of Ultrawide-band trap antenna of new E BG structures, and the antenna is micro- using impedance matching input is symmetrically distributed in
Broken line type electro-magnetic bandgap (EBG, Electromagnetic Band-gap) structure with line both sides realizes band-stop response.This side
The advantage of method is that directly designed band resistance structure is embedded into microstrip line (feeder line), it is not necessary to which other structures are optimized
It can just realize that preferably band falls into performance；It is disadvantageous in that the EBG structures adds additional the size of antenna, is unfavorable for small-sized
Change, and complicated structure proposes higher requirement to processing and fabricating.
Therefore, it is necessary to provide a kind of with good trap characteristic and list that is simple in construction and being conducive to Miniaturization Design
Trap ultra-wideband monopole antenna.
Utility model content
The purpose of this utility model is to be directed to above-mentioned the deficiencies in the prior art, and provides a kind of single trap ultra-wideband monopole
Antenna, disclosure satisfy that good trap characteristic, requirement that is simple in construction and being conducive to Miniaturization Design.
In order to solve the above technical problems, the technical scheme that the utility model is used is：A kind of single trap ultra wide band list
Pole sub-antenna, including medium substrate, the lower surface of the medium substrate are provided with earth plate, and the upper surface of the medium substrate is provided with
Radiation patch and the microstrip feed line being connected with the radiation patch, the medium substrate are rectangle medium substrate, the radiation patch
The top of the medium substrate is covered, the microstrip feed line is connected with the center of the lower edge of the radiation patch and is situated between along the rectangle
The long side direction of matter substrate is extended downwardly, and band resistance resonant element is etched with the middle part of the microstrip feed line.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, the radiation patch bottom is offered
Penetrate the open-work of the radiation patch.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, the radiation patch and open-work difference
The oval radiation patch of the broadside for being major axis along rectangle medium substrate extension and oval open-work, and the oval spoke
The center and the center of the oval open-work for penetrating paster are misaligned, the short axle of the oval radiation patch and the oval open-work
Short axle is conllinear and parallel with the long side of the rectangle medium substrate；The major axis of the oval radiation patch and the ratio of short axle are with being somebody's turn to do
The major axis of oval open-work is identical with the ratio of short axle.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, band resistance resonant element includes carving
The saturating microstrip feed line of eating thrown and the gap extended along the microstrip feed line length direction, along the microstrip feed line length side in the gap
There are the first coupling line and the second coupling line parallel and be spaced with coupling to being extended, the upper end one of first coupling line
The top in the gap is connected, the lower end of first coupling line is the free end of open circuit, the lower end integrally connected of second coupling line
The gap it is following, the upper end of second coupling line for open circuit free end.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, the earth plate covers the medium base
The bottom of plate lower surface, the earth plate includes the half elliptic earth plate of broadside extension of the major axis along rectangle medium substrate
With the rectangle earth plate being integrally connected with the half elliptic earth plate, the half elliptic earth plate and the oval radiation patch
Major axis is equal, and short axle is also equal；The tangent line of the minor axis vertex of the half elliptic earth plate and the oval radiation patch bottom are short
Projection of the tangent line on axle summit in the medium substrate plane is overlapped.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, the half elliptic earth plate it is short
Axle apex opens up the groove of the central concave of the oriented half elliptic earth plate.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, the long side of the medium substrate is
30mm, broadside are that 20mm, thickness are 1mm；The top of the minor axis vertex and the medium substrate on the oval radiation patch top is wide
Side is tangent, and the long side in both sides of two summits of the major axis of the oval radiation patch respectively with the medium substrate is tangent；The ellipse
The major axis of shape radiation patch is that 20mm, short axle are 16mm；The major axis of the oval open-work is that 10mm, short axle are 8mm, the ellipse
Spacing between the center of radiation patch and the center of the oval open-work is 3.5mm；The length of the microstrip feed line is 14mm, wide
Spend for 2mm；The gap that is etched is rectangular aperture on band resistance resonant element, and the length of the rectangular aperture is that 5mm, width are
The following and micro-strip of the distance between 1.6mm, the top of the rectangular aperture and top of the microstrip feed line and rectangular aperture is presented
The the distance between following of line is 4.5mm；The length of first coupling line and the second coupling line is that 4.8mm, width are
0.2mm, the coupling between first coupling line and the second coupling line is at intervals of 0.1mm；The right edge of first coupling line is with being somebody's turn to do
The distance between left side of left side and rectangular aperture of the distance between right edge of rectangular aperture and the second coupling line
It is 0.55mm.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, the groove is rectangular recess, the square
The width of connected in star is that 4mm, cup depth are 2mm.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, single trap ultra-wideband monopole day
The operating frequency range of line is 3.1GHz~10.6GHz, and trap scope is 5GHz~6GHz.
In another embodiment of the utility model list trap ultra-wideband monopole antenna, the material of the medium substrate is epoxy
Resin material, its relative dielectric constant is 4.1, and dielectric loss tangent value is 0.02；The characteristic impedance of the microstrip feed line is 50 Europe
Nurse.
The beneficial effects of the utility model are：Single trap ultra-wideband monopole antenna of the present utility model is on microstrip feed line
Etching band resistance resonant element, with band resistance and slow wave characteristic, trap characteristic is good, can effectively suppress radio ultra wide band system and WLAN
System is interfered, and avoids the situation that the antenna radiation characteristics caused by fluting deteriorate is etched in radiation patch.
Band resistance resonant element it is simple in construction, it is compact compact, be easy to integrated, will not additionally increase the size of whole antenna, make antenna
Miniaturization can be realized.The antenna has the advantages that bandwidth, size are small, cost is low, easy processing, has in whole frequency band range
Good directional diagram, but also the trap frequency needed can be selected by adjusting the length with resistance resonant element, short
There is higher application value in the application of range communication systems.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model list trap ultra-wideband monopole antenna embodiment；
Fig. 2 a are the right views of the trap ultra-wideband monopole antenna embodiment of the utility model list shown in Fig. 1；
Fig. 2 b are the left views of the trap ultra-wideband monopole antenna embodiment of the utility model list shown in Fig. 1；
Fig. 3 is the combination schematic diagram of single trap ultra-wideband monopole antenna embodiment shown in Fig. 2 a and Fig. 2 b；
Fig. 4 is the knot with resistance resonant element in the trap ultra-wideband monopole antenna embodiment of the utility model list shown in Fig. 3
Structure schematic diagram；
Fig. 5 is the ultra-wideband monopole of the utility model list trap ultra-wideband monopole antenna embodiment and resonance free unit
The actual measurement standing wave contrast curve of antenna；
Fig. 6 is the xz surface radiation directional diagrams of the utility model list trap ultra-wideband monopole antenna embodiment actual measurement；
Fig. 7 is the yz surface radiation directional diagrams of the utility model list trap ultra-wideband monopole antenna embodiment actual measurement.
Embodiment
For the ease of understanding the utility model, below in conjunction with the accompanying drawings and specific embodiment, the utility model is carried out more detailed
Thin explanation.Preferred embodiment of the present utility model is given in accompanying drawing.But, the utility model can be with many different
Form is realized, however it is not limited to embodiment described by this specification.On the contrary, the purpose for providing these embodiments is made to this
The understanding of the disclosure of utility model is more thorough comprehensive.
It should be noted that unless otherwise defined, all technologies and scientific terminology are with belonging to used in this specification
The implication that those skilled in the art of the present utility model are generally understood that is identical.Of the present utility model used in the description
Term be intended merely to describe specific embodiment purpose, be not intended to limit the utility model.Used in this specification
Term "and/or" includes the arbitrary and all combination of one or more related Listed Items.
In the description of embodiment of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal stroke
To ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", the instruction such as " outer " side
Position or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplification is retouched
State, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, without
It is understood that to indicate or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second " etc..Retouched of the present utility model
In stating, unless otherwise indicated, the implication of " multiple " refers to two or more.Term "and/or" used in this specification
Include the arbitrary and all combination of one or more related Listed Items.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly.For example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
The utility model is illustrated to related terms first：
Antenna radiation pattern：Antenna direction function graft represents the directional diagram as antenna；
Voltage standing wave ratio VSWR (Voltage Standing Wave Ratio)：VSWR refers to standing wave, and (frequency and amplitude are homogeneous
The ripple formed with, direction of vibration after the opposite two row traveling waves superposition in the consistent, direction of propagation) voltage peak and voltage dips it
Than, when standing-wave ratio is equal to 1, represent that the impedance of feeder line and antenna is matched completely, now high-frequency energy is all gone out by aerial radiation,
There is no the reflection loss of energy；When standing-wave ratio is infinity, total reflection is represented, energy is not radiate completely.That is,
Standing-wave ratio is bigger, and reflection power is higher, that is, impedance mismatch；
Passband：It is to refer to the signal frequency range by wave filter without producing decay；
Stopband：Decay in some frequency range is more than the frequency range of a setting；The upper limiting frequency of stopband with
The difference of lower frequency limit is referred to as bandwidth of rejection, that is, prevents the frequency range that signal passes through in certain frequency range；Stopband characteristic is namely
Out-of-band rejection characteristic, indicates the ability of wave filter filtering clutter, is to evaluate one of most important index of wave filter.
Centre frequency：It is the frequency in the middle of filter passband or stopband, equalization parameter standard is typically made of it to calculate
Some parameters；The corresponding wavelength of centre frequency is centre wavelength.
It is the structure chart of the utility model list trap ultra-wideband monopole antenna embodiment, the antenna bag as shown in figures 1-4
Medium substrate 6 is included, the medium substrate is rectangle medium substrate, the lower surface bottom of medium substrate 6 is provided with earth plate 2, should
Earth plate 2 is the structure wide with medium substrate 6；The upper surface of medium substrate 6 is provided with radiation patch 1 and and radiation patch
1 connected microstrip feed line 4, the top of the overwrite media substrate of radiation patch 4, microstrip feed line 4 and the lower edge of radiation patch 1
Center is connected and extended downwardly along the long side direction of rectangle medium substrate, and band resistance resonance list is etched with microstrip feed line 4
Member 5.
Single trap ultra-wideband monopole antenna of the present utility model is to be made by engraving method on medium substrate 6
, earth plate 2 is printed in the lower surface of medium substrate 6, upper surface printing radiation patch 1 and microstrip feed line 4, then in micro-strip feedback
Etched on line 4 and hinder resonant element 5 for the band of trap.Band resistance resonant element 5 has band resistance and slow wave characteristic, and trap characteristic is good
It is good, it can effectively suppress interfering for radio ultra wide band system and wlan system, and avoid and etched using in radiation patch 1
The deterioration of antenna radiation characteristics caused by the mode of fluting.Band resistance the simple in construction of resonant element 5, length can be less than resistance
A quarter with centre wavelength, it is compact compact, it is easy to integrated, therefore will not additionally increases the size of whole antenna, make antenna
Miniaturization can be realized.The antenna has the advantages that bandwidth, size are small, cost is low, easy processing, has in whole frequency band range
Good directional diagram, but also the trap frequency needed can be selected by adjusting the length with resistance resonant element 5.
In order to improve the pass-band performance of antenna, the feeder line of 50 ohm of 4 preferred characteristics impedance of the present embodiment microstrip feed line；Medium
Substrate 6 is made up of epoxide resin material, and its relative dielectric constant is 4.1, and dielectric loss tangent value is 0.02.The medium substrate 6
Long side be that 30mm, broadside are that 20mm, thickness are 1mm.
Further, the position that microstrip feed line 4 is closed in radiation patch 1 offers an open-work for penetrating the radiation patch
8, the open-work is etched in radiation patch 1.The present embodiment radiation patch 1 and open-work 8 are respectively major axis along rectangle medium substrate
Broadside extension oval radiation patch and oval open-work, the major semiaxis of oval radiation patch 1, semi-minor axis difference
For R1、R2, major semiaxis, the semi-minor axis of oval open-work 8 are respectively r1And r2.The center O of oval radiation patch 1aWith ellipse
The center O of open-work 8bIt is misaligned, and it is not equal to 0 with spacing L, L；Straight line where the short axle of oval radiation patch 1 and ellipse
Straight line is conllinear and parallel with the long side of rectangle medium substrate where the short axle of shape open-work 8.In addition, in oval radiation patch 1
The top broadside of the minor axis vertex in portion and medium substrate 6 is tangent, two summits of the oval major axis of radiation patch 1 respectively with medium
The long side in both sides of substrate 6 is tangent.The major axis of the major axis of oval radiation patch 1 and the ratio of short axle and oval open-work 8 with it is short
The ratio of axle is identical, i.e. R2/R1=r2/r1.The oval open-work 8 adds the active path of radiation current in radiation patch 1,
Contribute to antenna miniaturization.
The preferred 20mm of major axis, the preferred 16mm of short axle of the present embodiment ellipse radiation patch 1；The major axis of oval open-work is excellent
Select the preferred 8mm of 10mm, short axle, the major axis of oval radiation patch 1 and the ratio of short axle and oval open-work 8 major axis and short axle
Ratio be R2/R1=r2/r1=0.8.The spacing L at the center of oval radiation patch 1 and the center of oval open-work 8 is excellent
Select 3.5mm.Radiation patch is designed as the ellipse that major axis extends along medium substrate broadside by the present embodiment, is conducive to reducing
The size on the long side of medium substrate, is more conducive to antenna miniaturization.
In order to improve the band-stop response of single trap ultra-wideband monopole antenna, the present embodiment band hinders the structure of resonant element 5
As shown in Fig. 2 a, Fig. 3 and Fig. 4, band resistance resonant element 5 includes etching on microstrip feed line 4 and along microstrip feed line length direction
The gap 9 of extension, being extended in gap 9 along the length direction of microstrip feed line 4 has the first coupling parallel and that G is spaced with coupling
The coupling line 72 of zygonema 71 and second.The preferred rectangular aperture in gap 9 of the present embodiment, the long edge microstrip feed line 4 of the rectangular aperture
Length direction extension；The length on the long side of the equal length of two coupling lines and respectively less than rectangular aperture, the first coupling line 71
The top of upper end integrally connected rectangular aperture, the lower end of the first coupling line 71 for open circuit free end, under the second coupling line 72
The following of integrally connected rectangular aperture is held, the upper end of the second coupling line 72 is the free end of open circuit.
The length of microstrip feed line 4 is 14mm in the present embodiment, and width is 2mm, and rectangular aperture is being arranged at microstrip feed line 4 just
Middle, length L2It is preferred that 5mm, width W2It is preferred that the distance between 1.6mm, the top of rectangular aperture and top of microstrip feed line 4
And the distance between following of the following and microstrip feed line 4 of rectangular aperture is 4.5mm；Two coupling lines it is equal sized,
Its length L3For 4.8mm, width W3For 0.2mm, the coupling between the first coupling line 71 and the second coupling line 72 at intervals of 0.1mm,
Distance of the free end of two coupling lines apart from rectangular aperture correspondence up/down side is 0.2mm；First coupling line 71 and the second coupling
Zygonema 72 is arranged at the middle of rectangular aperture, the distance between the right edge of the first coupling line 71 and the right edge of rectangular aperture
And second coupling line 72 left side and the distance between the left side of rectangular aperture be 0.55mm.
By the length for adjusting the length with resistance resonant element rectangular aperture and two coupling lines, it is possible to achieve to be pressed down
The frequency range of system is adjusted.When the length with resistance resonant element rectangular aperture, the length increase of coupling line, to be suppressed frequency range
Stopband center can be offset to low frequency direction；Conversely, when the length with resistance resonant element rectangular aperture, the length of coupling line reduce
When, the stopband center to be suppressed frequency range can be offset to high frequency direction.
It should be noted that：Here the shape in gap 9, which is not limited to rectangle or any one, has certain extension
Length and the shape that above-mentioned trap function can be realized.
Further, the bottom of the lower surface of 2 overwrite media substrate of earth plate 6 of the present embodiment, including a major axis edge are situated between
The half elliptic earth plate 21 of the broadside of matter substrate 6 extension and a rectangle being connected with the one of half elliptic earth plate 21
Earth plate 22, the major axis of half elliptic earth plate 21 is equal with the width of medium substrate 6 with the long side of rectangle earth plate 22；Half
Oval earth plate 21 is identical with the size of oval radiation patch 1, i.e. half elliptic earth plate 21 and oval radiation patch
Major axis it is equal, short axle is also equal.Semiellipse design is carried out to the earth plate first half, the shape kissing with radiation patch is allowed to
Close, effective electrical length on ground can be increased, current path is added, further help in antenna miniaturization.
In addition, the tangent line of the minor axis vertex of half elliptic earth plate 21 and the oval bottom minor axis vertex of radiation patch 1
Projection of the tangent line in medium substrate plane is overlapped, further, in the present embodiment half elliptic earth plate minor axis vertex with it is ellipse
Projection of the minor axis vertex of circular radiation paster bottom in medium substrate plane is overlapped.
Further, oriented half elliptic ground connection is opened up in the present embodiment at the minor axis vertex of half elliptic earth plate 21
The groove 3 of the central concave of plate, the groove extends along the long side of medium substrate and broadside respectively.The groove 3 of the present embodiment
It is preferred that rectangular recess, the rectangular recess is symmetrical on the short axle of the half elliptic earth plate.Rectangular recess is along medium substrate broadside
The width W of extension1For 4mm, the cup depth L extended along the long side of medium substrate1For 2mm.The rectangular recess can further improve
Antenna Impedance Matching characteristic, preferable impedance can be realized by the size for adjusting rectangular recess in very wide frequency range
Match somebody with somebody.
Need exist for explanation be：The shape of radiation patch 1, open-work 8 and earth plate 2 is not limited to ellipse, can also
It is rectangle or circle etc., as long as the distribution character of electric current can be changed in radiation patch and be conducive to according to applicable situation small-sized
Change the shape of design in protection domain of the present utility model.
Selection and size based on the present embodiment medium substrate 6, it is right when the frequency band (stopband) of trap is 5GHz~6GHz
The centre frequency answered is 5.5GHz, according to related calculation formula：Light velocity c
=3 × 108M/s, relative dielectric constant is 4.1, thus can calculate stopband center wavelength and be：The a quarter of so stopband center wavelength is 6.7mm or so, and this reality
The length preferred value for applying example band resistance resonant element is 5mm, less than a quarter of stopband center wavelength.
Single trap ultra-wideband monopole antenna of the present utility model is by using the open-work 8 in radiation patch, the and of earth plate 2
Groove 3 can increase the path of radiation current, improve Antenna Impedance Matching characteristic, so as to realize miniaturization and the broadband of antenna
Design；With resistance resonant element 5 it is simple in construction, be easy to integrated, easy processing, length is less than the quarter-wave of stopband center
It is long, it will not additionally increase the size of whole antenna.The operating frequency range of the antenna is 3.1GHz~10.6GHz, trap scope
It is 5GHz~6GHz, the trap frequency needed can be selected by adjusting the length of resonant element 5, in short range communication systems
Application in have higher application value.
It should be noted that：What earth plate, radiation patch and microstrip feed line were used in the utility model is all the industry
General section bar, its thickness meets professional standard, repeats no more here.
If Fig. 5 is the utility model list trap ultra-wideband monopole antenna embodiment with hindering the reality of resonant element antenna without band
Standing wave contrast curve is surveyed, wherein K1 is that the utility model has the standing wave curve map with resistance resonant element antenna embodiment, and K2 is
Without the standing wave curve map with resistance resonant element antenna.It can be seen from the figure in 3.0GHz~11.3GHz frequency ranges
4.9GHz~6GHz frequency ranges (stopband), the present embodiment has the value of the voltage standing wave ratio VSWR with resistance resonant element antenna higher,
Peak has been even up to 7.5 or so, it can be seen that the antenna has good trap characteristic in this frequency band, it is to avoid with
Interfering between wlan system, the VSWR of other scopes is both less than 2, disclosure satisfy that FCC working frequency range requirement.Without setting
The VSWR values counted in the antenna with resistance resonant element, whole frequency range are both less than 2, that is to say, that the antenna is in 5GHz~6GHz scopes
It is interior not have trap characteristic.
Such as Fig. 6 and Fig. 7 is the antenna pattern of the utility model trap ultra-wideband monopole antenna embodiment actual measurement, first
Three-dimensional system of coordinate is defined, plane is level reference where using medium substrate, and the present embodiment regulation medium substrate broadside prolongs
Direction is stretched for x-axis, long side bearing of trend is y-axis, be z-axis perpendicular to the axle of plane extension where medium substrate.According to above-mentioned seat
Mark system, Fig. 6 show the antenna pattern in xz faces, and Fig. 7 show the antenna pattern in yz faces.By taking Fig. 6 as an example, the circle in Fig. 6
Week is divided 360 degree, therein 30,60 etc. represent angular dimension, has radially represented normalized field intensity value, unit is decibel (dB).
Antenna pattern when solid line q1 in Fig. 6 represents the operating frequency of antenna as 4GHz, dotted line q2 represents the operating frequency of antenna
Antenna pattern during for 7GHz, antenna pattern when dotted line q3 represents the operating frequency of antenna as 10GHz, it is seen that this three
Individual frequency is respectively provided with preferably circumferential omnidirectional radiation characteristic, and 4GHz, 7GHz and 10GHz are that 3.1GHz~10.6GHz frequency ranges are medium
Three Frequency points chosen are spaced, and not in the range of 5GHz~6GHz traps, show respectively the basic, normal, high of the frequency band
Frequency, it is representative.From Fig. 6 and Fig. 7, the antenna has good directional diagram, meets super wideband wireless system application
It is required that, with good radiation characteristic.
Trap ultra-wideband monopole antenna of the present utility model, which is used, to be etched on microstrip feed line 4 with resistance resonant element 5
Mode realizes trap, and simple in construction, length is shorter, compact compact, will not additionally increase the size of whole antenna, enable the antenna to
Realize miniaturization；In addition, radiation patch and earth plate are more beneficial for the reduction of antenna length using horizontal ellipsoidal structure, simultaneously
Effective electrical length of earth plate is added, current path is added, it helps antenna miniaturization；Rectangle on earth plate is recessed
Groove, can further improve Antenna Impedance Matching characteristic, can be in very wide frequency range by the size of adjusting grooves
Realize preferable impedance matching.
It should be only above embodiment of the present utility model, and not thereby limit the scope of the claims of the present utility model, every profit
The equivalent structure transformation made with the utility model specification and accompanying drawing content, or directly or indirectly it is used in other related skills
Art field, is included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of single trap ultra-wideband monopole antenna, including medium substrate, the lower surface of the medium substrate are provided with ground connection
Plate, the upper surface of the medium substrate is provided with radiation patch and the microstrip feed line being connected with the radiation patch, its feature
It is, the medium substrate is rectangle medium substrate, the radiation patch covers the top of the medium substrate, the micro-strip
Feeder line be connected with the center of the lower edge of the radiation patch and along the rectangle medium substrate long side direction to downward
Stretch, band resistance resonant element is etched with the middle part of the microstrip feed line.
2. single trap ultra-wideband monopole antenna according to claim 1, it is characterised in that open the radiation patch bottom
Provided with the open-work for penetrating the radiation patch.
3. single trap ultra-wideband monopole antenna according to claim 2, it is characterised in that the radiation patch and open-work
The respectively oval radiation patch and oval open-work of broadside extension of the major axis along rectangle medium substrate, and described ellipse
The center of circular radiation paster and the center of the oval open-work are misaligned, the short axle of the oval radiation patch with it is described
The short axle of oval open-work is conllinear and parallel with the long side of the rectangle medium substrate；The major axis of the oval radiation patch
It is identical with the ratio of short axle with the ratio of short axle and the major axis of the oval open-work.
4. single trap ultra-wideband monopole antenna according to claim 3, it is characterised in that the band hinders resonant element bag
The gap that etching extends on the microstrip feed line and along the microstrip feed line length direction is included, along described micro- in the gap
Ribbon feeder length direction, which is extended, the first coupling line and the second coupling line parallel and be spaced with coupling, first coupling
The top in gap described in the upper end integrally connected of zygonema, the lower end of first coupling line is the free end of open circuit, described second
Gap is following described in the lower end integrally connected of coupling line, and the upper end of second coupling line is the free end of open circuit.
5. single trap ultra-wideband monopole antenna according to claim 4, it is characterised in that the earth plate covering is described
The bottom of medium substrate lower surface, the earth plate includes the semiellipse of broadside extension of the major axis along rectangle medium substrate
Shape earth plate and with the integral rectangle earth plate that is connected of the half elliptic earth plate, the half elliptic earth plate with it is described ellipse
The major axis of circular radiation paster is equal, and short axle is also equal；The tangent line of the minor axis vertex of the half elliptic earth plate with it is described ellipse
Projection of the tangent line of circular radiation paster bottom minor axis vertex in the medium substrate plane is overlapped.
6. single trap ultra-wideband monopole antenna according to claim 5, it is characterised in that the half elliptic earth plate
Minor axis vertex at open up the oriented half elliptic earth plate central concave groove.
7. single trap ultra-wideband monopole antenna according to claim 6, it is characterised in that the long side of the medium substrate
It is that 20mm, thickness are 1mm for 30mm, broadside；
The top broadside of the minor axis vertex and the medium substrate on the oval radiation patch top is tangent, the oval spoke
Both sides long side of two summits respectively with the medium substrate for penetrating the major axis of paster is tangent；The length of the oval radiation patch
Axle is that 20mm, short axle are 16mm；The major axis of the oval open-work is that 10mm, short axle are 8mm, the oval radiation patch
Spacing between center and the center of the oval open-work is 3.5mm；
The length of the microstrip feed line is 14mm, and width is 2mm；The gap etched on the band resistance resonant element is rectangular slits
Gap, the length of the rectangular aperture is that 5mm, width are 1.6mm, the top of the rectangular aperture and the top of the microstrip feed line
The distance between and the distance between following of following and microstrip feed line of rectangular aperture be 4.5mm；First coupling
The length of line and the second coupling line is that 4.8mm, width are 0.2mm, between first coupling line and the second coupling line
Coupling is at intervals of 0.1mm；The distance between the right edge of first coupling line and right edge of the rectangular aperture and the
The distance between the left side of two coupling lines and the left side of rectangular aperture are 0.55mm.
8. single trap ultra-wideband monopole antenna according to claim 7, it is characterised in that the groove is that rectangle is recessed
Groove, the width of the rectangular recess is that 4mm, cup depth are 2mm.
9. single trap ultra-wideband monopole antenna according to claim 8, it is characterised in that single trap ultra wide band list
The operating frequency range of pole sub-antenna is 3.1GHz~10.6GHz, and trap scope is 5GHz~6GHz.
10. single trap ultra-wideband monopole antenna according to any one of claim 1~9, it is characterised in that the medium
The material of substrate is epoxide resin material, and its relative dielectric constant is 4.1, and dielectric loss tangent value is 0.02；The micro-strip feedback
The characteristic impedance of line is 50 ohm.
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| CN201720021231.XU CN206349513U (en) | 2017-01-09 | 2017-01-09 | A kind of single trap ultra-wideband monopole antenna |
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| CN201720021231.XU CN206349513U (en) | 2017-01-09 | 2017-01-09 | A kind of single trap ultra-wideband monopole antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109149098A (en) * | 2018-10-10 | 2019-01-04 | 江苏中科智睿物联网科技有限公司 | A kind of pole wide-band printing unipole antenna |
| CN109193150A (en) * | 2018-09-26 | 2019-01-11 | 钟祥博谦信息科技有限公司 | Trap reconfigurable antenna and design method |
| CN109980353A (en) * | 2019-03-13 | 2019-07-05 | 东莞理工学院 | More notch multi-band ultra wideband flat plane antennas |
| CN113178688A (en) * | 2021-04-19 | 2021-07-27 | 辽宁工程技术大学 | Hollow hexagram ultra wide band antenna |
| CN113410636A (en) * | 2021-07-21 | 2021-09-17 | 湖南大学 | Flexible compact type three-trapped wave ultra-wideband antenna |
| WO2023159345A1 (en) * | 2022-02-22 | 2023-08-31 | 京东方科技集团股份有限公司 | Antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109193150A (en) * | 2018-09-26 | 2019-01-11 | 钟祥博谦信息科技有限公司 | Trap reconfigurable antenna and design method |
| CN109149098A (en) * | 2018-10-10 | 2019-01-04 | 江苏中科智睿物联网科技有限公司 | A kind of pole wide-band printing unipole antenna |
| CN109980353A (en) * | 2019-03-13 | 2019-07-05 | 东莞理工学院 | More notch multi-band ultra wideband flat plane antennas |
| CN109980353B (en) * | 2019-03-13 | 2023-10-13 | 东莞理工学院 | Multi-notch frequency band ultra-wideband planar antenna |
| CN113178688A (en) * | 2021-04-19 | 2021-07-27 | 辽宁工程技术大学 | Hollow hexagram ultra wide band antenna |
| CN113178688B (en) * | 2021-04-19 | 2024-02-02 | 辽宁工程技术大学 | Hollow hexagram ultra-wideband antenna |
| CN113410636A (en) * | 2021-07-21 | 2021-09-17 | 湖南大学 | Flexible compact type three-trapped wave ultra-wideband antenna |
| CN113410636B (en) * | 2021-07-21 | 2024-05-17 | 湖南大学 | Flexible compact three-notch ultra-wideband antenna |
| WO2023159345A1 (en) * | 2022-02-22 | 2023-08-31 | 京东方科技集团股份有限公司 | Antenna |
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