CN206194956U - Small -size circular polarized antenna of qxcomm technology based on single negative zero rank syntonizer - Google Patents
Small -size circular polarized antenna of qxcomm technology based on single negative zero rank syntonizer Download PDFInfo
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- CN206194956U CN206194956U CN201621234383.XU CN201621234383U CN206194956U CN 206194956 U CN206194956 U CN 206194956U CN 201621234383 U CN201621234383 U CN 201621234383U CN 206194956 U CN206194956 U CN 206194956U
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Abstract
The utility model discloses a small -size circular polarized antenna of qxcomm technology based on single negative zero rank syntonizer, including top layer paster, floor, distributing point and single negative zero rank syntonizer, the top layer paster is connected to the floor through the metallization via hole, the center of top layer paster is the distributing point, single negative zero rank syntonizer comprises 22 mushroom arrays, the quantity of metallization via hole is 4. The utility model discloses a based on the circular polarized antenna of qxcomm technology of single negative zero rank syntonizer, the size is little, has the omnidirectional radiation directional diagram in the azimuth plane, can cover big service area, has good circular polarization performance simultaneously.
Description
Technical field
The utility model belongs to antenna technical field, is related to a kind of small-sized Circular polarized omni-directional based on single negative Zero order resonator
Antenna.
Background technology
Omnidirectional circular-polarized antenna refer to while have a class antenna of omnidirectional radiation characteristic and circular polarization radiation characteristic, due to
Such antenna has the two special performances and is widely used in communication, radar, remote sensing remote measurement, electronic reconnaissance and electronics and does
The aspect such as disturb.Omnidirectional circular-polarized antenna is applied in space communication, remote measurement remote sensing and astronomical equipment, can reduce the damage of signal
Lose, effectively eliminate the polarization distortion effects caused by ionosphere Faraday rotation effect；Omnidirectional circular-polarized antenna is applied to electricity
In son confrontation, the radio wave of various polarization modes of the enemy in addition to reverse pure circle polarized signal can be scouted and disturbed；Will be complete
To on the object that circularly polarized antenna device swings or roll in high-speed motion, acutely, such as spacecraft, aircraft, naval vessels and automobile,
Radio signal can be received under any motion state；Omnidirectional circular-polarized antenna is applied in radio data system, energy
It is enough effectively to expand the coverage of signal, and can to a certain extent overcome ghost image stress；Some communication systems use azimuth plane
Omnidirectional antenna, can improve the promptness and reliability of communication.Therefore, research omnidirectional circular-polarized antenna has important practical valency
Value.
Research work to omnidirectional circular-polarized antenna at present is largely concentrated on single circular polarized antenna, is being needed
During omnidirectional circular-polarized antenna, multiple circular polarized antennas are simply carried out into permutation and combination according to certain way, so as to realize omni-directional.
Resulting antenna performance is often unable to reach most preferably in this way.
Utility model content
The purpose of this utility model is the defect for overcoming above-mentioned technology to exist, there is provided based on the small of single negative Zero order resonator
Type omnidirectional circular-polarized antenna, the designed omnidirectional circular-polarized antenna based on single negative Zero order resonator, size is small, with azimuth plane
Interior omnidirectional radiation directional diagram, can cover big coverage, while having good circular polarisation performance.
Its concrete technical scheme is：
It is negative based on the small-sized omnidirectional circular-polarized antenna of single negative Zero order resonator, including top layer of patches, floor, distributing point and list
Zero order resonator, the top layer of patches is connected to floor by the via that metallizes, and the center of the top layer of patches is distributing point, institute
State single negative Zero order resonator to be made up of 2 × 2 mushroom arrays, the quantity of the metallization via is 4.
Further, the mushroom unit of the mushroom array has a foursquare sheet metal, by the metal column at center with
Floor is connected, and left hand inductive effect is provided by the metal column being grounded, and right hand capacity effect is by the coupling between sheet metal and floor
There is provided, right hand inductive effect is provided by the electric current on sheet metal.
Further, the size of antenna is：l1=48mm, l2=46mm, l3=5mm, l4=3mm, l5=26.5mm, l6=
7mm, 4 a diameter of 1mm of metallization via, distributing point is located at center of antenna position.
Compared with prior art, the beneficial effects of the utility model are：
1st, size is small, due to not having absolute dependence to close between the physical length of the resonant frequency resonant cavity of Zero order resonator
System, therefore can added minor matters can further reduce resonant frequency with small design antenna, and on floor.
2nd, monoplane SF single feed structure, it is not necessary to traditional antenna realize Circular polarized omni-directional needed for 90 ° of phase shifters and double-fed
Electric network, it is easier to design and processing；Capacitive gap needed for not needing double negative zero rank resonance, when capacitive gap increased calculating
Between and difficulty of processing, and designed antenna does not need the gap, makes calculating speed faster, processes more accurate.
3rd, compared with double negative zero rank resonance omnidirectional circular-polarized antennas, propose that antenna does not need gap electric capacity, distributing point can position
In antenna geometrical center, make the symmetry of directional diagram more preferably, circular polarisation degree is also more preferable；Because distributing point is fixed, only need to be by holding
Property coupling piece diameter adjustment matching, design and realize it is simpler.
Brief description of the drawings
Fig. 1 is 2 × 2 mushroom array junctions compositions, and wherein Fig. 1 (a) is double negative, and Fig. 1 (b) is single negative；
Fig. 2 is mushroom configuration equivalent-circuit model, and wherein Fig. 2 (a) is double negative, and Fig. 2 (b) is single negative；
Fig. 3 is the omnidirectional circular-polarized antenna structure based on single negative zero rank resonance；
Fig. 4 is the current distributing figure on the electric field and floor of antenna top layer of patches, wherein Fig. 4 (a) t=0, Fig. 4 (b) t=
T/4, Fig. 4 (c) t=T/2, Fig. 4 (d) t=3T/4；
Fig. 5 is that reflectance factor calculates result；
Fig. 6 is antenna xoy faces patterns calculating result at centre frequency；
Fig. 7 is antenna xoz faces patterns calculating result at centre frequency；
Fig. 8 is antenna yoz faces patterns calculating result at centre frequency；
Fig. 9 isθ=90 ° axis of orientation ratio is with frequency variation curve result of calculation；
Figure 10 is θ=90 ° face axle ratio with azimuthal change curve result of calculation；
Figure 11 isFace axle is than the change curve result of calculation with the angle of pitch；
Figure 12 isθ=90 ° directive gain is with frequency variation curve result of calculation；
Figure 13 is reflectance factor test result；
Figure 14 is antenna xoy faces directional diagram experimental result at centre frequency；
Figure 15 is antenna xoz faces directional diagram experimental result at centre frequency；
Figure 16 is antenna yoz faces directional diagram experimental result at centre frequency；
Figure 17 isθ=90 ° axis of orientation ratio is with frequency variation curve experimental result；
Figure 18 is θ=90 ° face axle ratio with azimuthal change curve experimental result；
Figure 19 isFace axle is than the change curve experimental result with the angle of pitch；
Figure 20 isθ=90 ° directive gain is with frequency variation curve experimental result.
Specific embodiment
The technical solution of the utility model is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
1 mushroom configuration Zero order resonator
Left-and-right-hand transmission line has zeroth order resonance characteristic, i.e., the infinity of wavelength is realized in nonzero frequency.Due to right-hand man
The resonant frequency of the Zero order resonator that transmission line is constituted is unrelated with physical size, and the miniaturization for being widely used in microwave device sets
Meter.Zeroth order resonant frequency depends on parallel resonance in the equivalent-circuit model of left-and-right-hand transmission line, removes after series capacitance not shadow
Zeroth order resonant frequency is rung, such case is referred to as single negative Zero order resonator, for ease of contrast, traditional Zero order resonator is referred to as double
Negative Zero order resonator.The resonant frequency of single negative Zero order resonator is equally unrelated with physical size, and with double negative Zero order resonators
Compare, single negative zero rank resonator has simpler structure, it is easier to realize.
Mushroom configuration is a kind of common Zero order resonator form, and it passes through a metal by a metal patch for rectangle
Change via and be connected to ground composition, N × N number of mushroom array is still a zeroth order resonance structure.By 2 × 2 mushroom array structures
Into double negative and single negative Zero order resonators respectively as shown in Fig. 1 (a) and (b).Double negative mushroom array as shown in Fig. 1 (a) can be seen
Go out, mushroom unit has a foursquare sheet metal, is connected with floor by the metal column at center, and left-handed capacitors effect is by adjacent
Coupling between sheet metal is provided, and left hand inductive effect is provided by the metal column being grounded, and right hand capacity effect is by sheet metal and floor
Between coupling provide, right hand inductive effect by sheet metal electric current provide.The negative mushroom array of list as shown in Fig. 1 (b) can
Find out, single negative Zero order resonator has lacked the left-handed capacitors that the coupling between adjacent metal piece is provided, other with double negative mushrooms
Array is identical.The equivalent circuit diagram of double negative and single negative mushroom array Zero order resonator, such as Fig. 2 can be readily available by Fig. 1
It is shown.
2 omnidirectional circular-polarized antennas are designed
Double negative and single negative Zero-order resonant antenna is capable of achieving the omnidirectional radiation of azimuth plane (xoy), has in xoz and yoz faces
The antenna pattern of similar dipole antenna.The theoretical analysis and simulation calculation understand that it is more right that single negative Zero-order resonant antenna has
The directional diagram of title and lower cross polarization, reason are that the distributing point of double negative antennas deviates center of antenna, cause directional diagram
Asymmetric and cross-polarized increase, and the distributing point of single negative antenna is located at center of antenna, therefore directional diagram is more symmetrical, has
Lower cross polarization.
Radiation mode of the Zero order resonator of mushroom configuration under zeroth order resonance can be equivalent to an electrical dipole antenna, if
Annular minor matters are loaded on floor, then can obtain toroidal current, this toroidal current can be equivalent to a magnetic-dipole antenna, equivalent
Electricity, magnetic-dipole antenna have identical phase center, by the loading minor matters on regulating floor, can make equivalent electricity, magnetic couple
Pole sub-antenna has identical amplitude and 90 ° of phase difference, thus can realize Circular polarized omni-directional in azimuth plane.
Fig. 3 shows the structure chart of designed omnidirectional circular-polarized antenna, and the darker regions in figure are top layer of patches, light color
Region is floor.Fig. 4 gives paster Electric Field Distribution and floor current distributing figure in a cycle, and (left side is paster electric field point
Cloth, right side is floor CURRENT DISTRIBUTION).
As seen from Figure 4, because antenna is radiated by zeroth order mode of resonance, now antenna is similar to an electricity
Container, electric field energy and magnetic field energy are periodically changed.Under zeroth order mode of resonance, the CURRENT DISTRIBUTION on antenna includes
Radial current and toroidal current, the radiation of radial current can regard the radiation of electrical dipole antenna as, and the radiation of toroidal current can
Regard the radiation of magnetic-dipole antenna as.Influence magnetic-dipole antenna radiant power is the amplitude of toroidal current, and toroidal current
Amplitude depend on minor matters width size.The initial phase difference of electrical dipole antenna and magnetic-dipole antenna is by loading minor matters
Length determine, therefore influence antenna axial ratio two factors and load minor matters size it is relevant.Day knot shown in Fig. 3
Structure works in right-handed circular polarization pattern, if minor matters are loaded along opposite direction, antenna then works in left-hand circular polarization pattern.
The design is less demanding to antenna gain, but more considerable is to ensure antenna gain maximum radiation entelechy
Change ripple, i.e. antenna main lobe direction should be best with antenna polarization azimuth it is consistent.
By optimization design, the final size of antenna is：l1=48mm, l2=46mm, l3=5mm, l4=3mm, l5=
26.5mm, l6=7mm, 4 a diameter of 1mm of metallization via, distributing point is located at center of antenna position.In order to 50 Ω feeder lines
Match, impedance matching is carried out using a capacitive coupling piece, the radius of capacitive coupling piece is 3mm.It should be noted that ground
The length of added minor matters is influential on zeroth order resonant frequency on plate, and minor matters are more long, and zeroth order resonant frequency is lower, its reason
It is that the increase of minor matters length increases shunt capacitance, and zeroth order resonant frequency is determined by parallel resonance frequency, therefore with minor matters
Increase, the reduction of zeroth order resonant frequency.
Fig. 5 is the result of calculation of reflectance factor；Centered on Fig. 6~Fig. 8 at frequency antenna in xoy faces, xoz faces and yoz faces
The result of calculation of normalized radiation pattern；Fig. 9 isOn the direction of θ=90 ° antenna axial ratio with frequency change curve；Figure 10 is
Antenna axial ratio at centre frequency in the face of θ=90 ° is with azimuthal change curve；Centered on Figure 11 at frequencyDay in face
Bobbin is than the change curve with the angle of pitch；Figure 12 isOn the direction of θ=90 ° antenna gain with frequency change curve.
Reflectance factor as shown in Figure 5 calculates result and understands, (center is frequently for 1.63GHz for the zeroth order resonant frequency of antenna
Rate)；The antenna radiation pattern of centre frequency shown in Fig. 6~8, antenna realizes omnidirectional radiation at xoy faces (azimuth plane), side
The out-of-roundness of plane is less than 0.23dB, meanwhile, there is the radiation side of similar dipole antenna with yoz faces (pitching face) in xoz faces
Xiang Tu.
Axle as shown in Figure 9 understands that the axle ratio at centre frequency 1.63GHz is 1.8dB than the change curve with frequency,
Antenna 3dB axles are 1.35GHz~1.74GHz than scope (relative bandwidth is 25.2%)；Antenna at centre frequency as shown in Figure 10
Axle ratio understands that in whole azimuth plane, axle is than respectively less than 2dB with azimuthal change curve；As shown in Figure 11 at centre frequency
Antenna axial ratio understands that axle is 78 °~126 ° than the beam area less than 3dB, and beam angle reaches with the change curve of the angle of pitch
48°；Antenna gain as shown in Figure 12 understands with the change curve of frequency, at centre frequency 1.63GHz, antenna maximum gain
It is 1.54dB.
3 experimental results
Figure 13 be reflectance factor experimental result, Figure 14~Figure 16 be zeroth order resonant frequency at antenna respectively in xoy faces, xoz
The test result of normalized radiation pattern in face and yoz faces；Figure 17 isAntenna axial ratio changes bent with frequency on the direction of θ=90 °
The test result of line；Centered on Figure 18 at frequency θ=90 ° face internal antenna axle than the test result with azimuthal variation curve；Figure
Centered on 19 at frequencyFace internal antenna axle is than the test result with angle of pitch change curve；Figure 20 isθ=90 ° side
Upward antenna gain with frequency variation curve test result.
The size of whole antenna is 0.3 λ0×0.3λ0×0.01λ0, compared with conventional resonant antenna, designed antenna is realized
Miniaturization；Reflectance factor experimental result as shown in Figure 13 understands that (center is frequently for 1.61GHz for the zeroth order resonant frequency of antenna
Rate), result of calculation is 1.63GHz, and the 10dB relative bandwidths of test are 1.3%；The centre frequency antenna shown in Figure 14~16
Directional diagram understands that antenna realizes omnidirectional radiation at xoy faces (azimuth plane), and the out-of-roundness in azimuth plane is less than 0.32dB, meanwhile,
There is the antenna pattern of similar dipole antenna with yoz faces (pitching face) in xoz faces, it is consistent with calculated direction figure；Can be seen that
Experimental result is consistent with result of calculation, and measurement direction figure is slightly worse compared with simulation result, smaller mainly due to antenna size, sets up
During it is difficult to ensure that antenna plane is completely in horizontal level, so as to influence the antenna pattern of antenna.
Axle as shown in Figure 17 understands that the axle ratio at centre frequency 1.61GHz is than the change curve with frequency
2.1dB, antenna 3dB axial ratio bandwidth are 1.4GHz~1.75GHz (relative bandwidth is 22.2%)；It is more slightly worse than result of calculation, mainly
Because foozle and test environment cause.As shown in Figure 18 at centre frequency antenna axial ratio with azimuthal change curve
Understand, in whole azimuth plane, axle is than respectively less than 2.1dB.As shown in Figure 19 at centre frequency antenna axial ratio with the angle of pitch change
Change curve to understand, axle is 78 °~120 ° than the beam area less than 3dB, and beam angle reaches 42 °.Antenna as shown in Figure 20
Gain understands with the change curve of frequency, and at centre frequency 1.61GHz, antenna maximum gain is 1.11dB.
The above, only the utility model preferably specific embodiment, protection domain of the present utility model is not limited to
This, any one skilled in the art can become apparent in the technical scope that the utility model is disclosed
Technical scheme simple change or equivalence replacement each fall within protection domain of the present utility model.
Claims (3)
1. based on single small-sized omnidirectional circular-polarized antenna for bearing Zero order resonator, it is characterised in that including top layer of patches, floor, feedback
Electricity point and single negative Zero order resonator, the top layer of patches are connected to floor, the center of the top layer of patches by the via that metallizes
It is distributing point, the negative Zero order resonator of the list is made up of 2 × 2 mushroom arrays, the quantity of the metallization via is 4.
2. it is according to claim 1 based on single small-sized omnidirectional circular-polarized antenna for bearing Zero order resonator, it is characterised in that institute
Stating the mushroom unit of mushroom array has a foursquare sheet metal, is connected with floor by the metal column at center, left hand inductance
Effect is provided by the metal column being grounded, and right hand capacity effect is provided by the coupling between sheet metal and floor, right hand inductive effect
There is provided by the electric current on sheet metal.
3. it is according to claim 1 based on single small-sized omnidirectional circular-polarized antenna for bearing Zero order resonator, it is characterised in that day
The size of line is：l1=48mm, l2=46mm, l3=5mm, l4=3mm, l5=26.5mm, l6=7mm, 4 vias that metallize
A diameter of 1mm, distributing point is located at center of antenna position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234383.XU CN206194956U (en) | 2016-11-17 | 2016-11-17 | Small -size circular polarized antenna of qxcomm technology based on single negative zero rank syntonizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234383.XU CN206194956U (en) | 2016-11-17 | 2016-11-17 | Small -size circular polarized antenna of qxcomm technology based on single negative zero rank syntonizer |
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| Publication Number | Publication Date |
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| CN206194956U true CN206194956U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621234383.XU Expired - Fee Related CN206194956U (en) | 2016-11-17 | 2016-11-17 | Small -size circular polarized antenna of qxcomm technology based on single negative zero rank syntonizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110519328A (en) * | 2019-07-15 | 2019-11-29 | 北京航空航天大学 | A kind of self-power wireless perception gas meter, flow meter system |
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2016
- 2016-11-17 CN CN201621234383.XU patent/CN206194956U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110519328A (en) * | 2019-07-15 | 2019-11-29 | 北京航空航天大学 | A kind of self-power wireless perception gas meter, flow meter system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20171117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |