CN104795637A - Rectangular-slot-loaded thin monolayer medium broadband microstrip patch antenna - Google Patents
Rectangular-slot-loaded thin monolayer medium broadband microstrip patch antenna Download PDFInfo
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- CN104795637A CN104795637A CN201510169341.6A CN201510169341A CN104795637A CN 104795637 A CN104795637 A CN 104795637A CN 201510169341 A CN201510169341 A CN 201510169341A CN 104795637 A CN104795637 A CN 104795637A
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Abstract
The invention discloses a rectangular-slot-loaded thin monolayer medium broadband microstrip patch antenna. The rectangular-slot-loaded thin monolayer medium broadband microstrip patch antenna basically comprises a microstrip path, an impedance matching microstrip line, a feed microstrip line and a medium substrate, wherein the medium substrate is thin and monolayer and low in relative dielectric constant and provided with the rectangular microstrip patch. The middle of the microstrip patch is provided with three rectangular loaded slots including the first loaded slot, the second loaded slot and the third loaded slot which are uniform in size and provided with two parallel left and right narrow sides, the right narrow side of the microstrip patch is provided with a feed port at the upper end, the feed port is connected with the impedance matching microstrip line, the left end of the impedance matching microstrip line is connected with the feed port, and the other end of the impedance matching microstrip line is connected with the feed microstrip line. By the loaded slots and the microstrip line technology with impedance matching, multi-resonance frequency is realized, the microstrip medium substrate low in relative dielectric constant is used to broaden bandwidth of the antenna, and the feed microstrip line is coplanar with the microstrip patch. The rectangular-slot-loaded thin monolayer medium broadband microstrip patch antenna has the advantages of simple structure, easy machining and plane array.
Description
Technical field
The present invention relates to single layer microstrip patch antenna technical field, be specifically related to a kind of rectangular aperture and load thin single-layer medium Broadband Micro-strip Patch Antenna.
Background technology
The demand of dual-use field to broad-band antenna is more and more extensive.In some practical application, antenna array is also had to the strict demand of the aspects such as such as volume, weight, efficiency and environmental suitability.Such as: for machine/Space-borne, require antenna thin profile, lightweight, efficiency is high and satisfied certain environmental applications condition.
The radiating antenna being suitable for planar array antenna has various ways, mainly contains wave guide slot array antenna, printing vibrator and Microstrip Antenna Array etc.Wave guide slot array antenna efficiency is high, but Heavy Weight, processing cost are high; Printed dipole antenna battle array section is high, structure assembling relative complex when forming planar array; Micro-strip paster antenna have section low, be easy to batch machining and form large-scale planar array antenna, but its narrow bandwidth; Selection for antenna form needs according to actual requirement, and the factor compromise of comprehensive each side is considered.
Microstrip antenna due to have section low, lightweight, be easy to processing and be easy to the many merits such as integrated with other active device, therefore, there is wide range of application.
Common microstrip antenna has the narrow shortcoming of impedance bandwidth, and researcher has done large quantifier elimination to the impedance bandwidth of broadening microstrip antenna, and comparing typical method has:
1. adopt the mode of multiple-layered patches, especially double-layer paster antenna form, form double resonance point by the paster of upper and lower different size, thus increase the impedance bandwidth of microstrip antenna.But the shortcoming that this structure has it intrinsic, namely, need multilayer acoustical panel, typical structure is as double-deck micro-strip paster antenna, it includes radiation feed dielectric layer, parasitic patch dielectric layer and froth bed between the two, and multilayer dielectricity is by bonding assembling, and this structure has several obvious defect, that is, the viscose glue of different materials dielectric-slab bonding is selected and process issues; Different materials thermal expansion factor difference brings whole antenna thermal deformation problem; The problem that antenna array heat transfer is low is also had for borne SAR;
2. the micro-strip paster antenna adopting the various grooves (as: E type groove, U-type groove etc.) of coaxial feed form to load also can increase the impedance bandwidth of microstrip antenna.The defect that the patch antenna element of this class formation has it intrinsic when forming large-scale planar array antenna (non-bidimensional larger angle scanning battle array): each radiating element adopts probe feed to be unfavorable for processing, and a large amount of vertical solder joint between probe with microband paste reduces the reliability of system; In order to form planar array, still need extra power division network; In addition, the dielectric-slab thickness of these antenna unit is usually all thicker, because this increasing the weight of antenna.
3. adopt metal backing cavity configuration form, be equivalent to increase antenna thickness, reduce its equivalent relative dielectric constant, thus the impedance bandwidth of broadening antenna.The defect of this kind of antenna is: the metal backing chamber degree of depth is correlated with wavelength, and will add back of the body chamber after each unit, thus causes antenna weights bigger than normal, the deficiencies such as structure and processing technology complexity.
4. other such as electromagnetic coupled fed microstrip patch antenna such as L shaped microstrip and terminal loads all has the similar fault of construction of above item.
Summary of the invention
For solving the problems of the technologies described above, we have proposed a kind of rectangular aperture and load thin single-layer medium Broadband Micro-strip Patch Antenna, solve the various defects existing in existing various antenna element and cause because of structure, reach Broadband Micro-strip Patch Antenna by good broadband characteristics, structure is simple, lightweight, cost is low and be convenient to form the object of planar array.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of rectangular aperture loads thin single-layer medium Broadband Micro-strip Patch Antenna, comprises medium substrate, microband paste, feeding microstrip line and impedance matching microstrip line; Described medium substrate is the medium substrate of the low relative dielectric constant of thin individual layer, and described medium substrate is provided with the described microband paste of rectangle; The middle part of described microband paste has three consistent size and the rectangle parallel with two narrow limits about it loads gap one, load gap two and load gap three, described loading gap two is opened in the centre of broadside under described microband paste, described loading gap one and load gap three and be opened in broadside on described microband paste and symmetrical about described loading gap two; The upper end, narrow limit, the right side of described microband paste is provided with feed port, described feed port is connected with described impedance matching microstrip line, described impedance matching microstrip line is the L shape structure of opening towards lower left, and the left end of described impedance matching microstrip line is connected with described feed port.The other end of described impedance matching microstrip line is connected with described feeding microstrip line.
Preferably, described dielectric substrate thickness is 0.508mm, and relative dielectric constant is 2.2; The service band that described rectangular aperture loads thin single-layer medium Broadband Micro-strip Patch Antenna is the Ku wave band of wavelength 17.12 ~ 19.07mm, centre frequency λ
0wavelength is 18.18mm.
Preferably, the length of described microband paste is 0.473 λ
0, width is 0.287 λ
0, described loading gap one, load gap two and load the length in gap three and be 0.237 λ
0, stitching wide is 0.15 ~ 0.2mm; The distance on Distance geometry loading narrow limit apart from the right side, gap three on narrow limit apart from a left side, described loading gap one is 0.167 λ
0.
Preferably, described impedance matching microstrip line, feeding microstrip line and described microband paste are coplanar, and described impedance matching micro belt line width is 0.88mm, and lateral length is 2.94mm, and longitudinal length is 2.46mm.
Preferably, load thin single-layer medium Broadband Micro-strip Patch Antenna by plural described rectangular aperture and form antenna array, during with narrow edge direction for scanning direction, the operating frequency of described antenna array is 15.73 ~ 17.52GHz, service band is the Ku wave band of wavelength 17.12 ~ 19.07mm, centre frequency λ
0wavelength is 18.18mm.
Pass through technique scheme, a kind of rectangular aperture that the present invention proposes loads thin single-layer medium Broadband Micro-strip Patch Antenna, the impedance matching microstrip line coplanar with microband paste and feeding microstrip line is adopted to encourage single layer radiation paster, can be printed on medium substrate together with micro-band power division network, reduce the difficulty of processing of large-scale plane microstrip antenna battle array; Adopt slim medium substrate, be conducive to the design of micro-band power division network and reduce antenna weights; Adopt single-layer medium substrate, antenna structure can be made on the one hand the simplest, on the other hand the material of antenna and processing cost are down to minimum; Feed port is positioned at the upper end on the narrow limit, the right side of microband paste, the impedance matching microstrip line that one section has the L shape structure of impedance matching function is increased between feeding microstrip line and rectangular microband paste, increase tuning range on the one hand, the bandwidth of broadening antenna, entire physical size can be reduced on the other hand, be convenient to unit group battle array; Loading gap on radiating antenna is deep into Broadband Micro-strip Patch Antenna inside, realizes antenna matched well.In a word, the present invention proposes a kind of rectangular aperture loads that thin single-layer medium Broadband Micro-strip Patch Antenna is simple and compact for structure, cross section is little, lightweight, cost is low, processing is simple and broadening bandwidth.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
What Fig. 1 loaded thin single-layer medium Broadband Micro-strip Patch Antenna for a kind of rectangular aperture disclosed in the embodiment of the present invention faces structural representation;
Fig. 2 loads the side-looking structural representation of thin single-layer medium Broadband Micro-strip Patch Antenna for a kind of rectangular aperture disclosed in the embodiment of the present invention;
Fig. 3 loads the voltage standing wave ratio figure of thin single-layer medium Broadband Micro-strip Patch Antenna for a kind of rectangular aperture disclosed in the embodiment of the present invention;
Fig. 4 loads the emulation directional diagram of thin single-layer medium Broadband Micro-strip Patch Antenna on 15.81GHz frequency for a kind of rectangular aperture disclosed in the embodiment of the present invention;
Fig. 5 loads the emulation directional diagram of thin single-layer medium Broadband Micro-strip Patch Antenna on 16.2GHz frequency for a kind of rectangular aperture disclosed in the embodiment of the present invention;
Fig. 6 loads the emulation directional diagram of thin single-layer medium Broadband Micro-strip Patch Antenna on 16.62GHz frequency for a kind of rectangular aperture disclosed in the embodiment of the present invention;
Fig. 7 loads the emulation directional diagram of thin single-layer medium Broadband Micro-strip Patch Antenna on 17.01GHz frequency for a kind of rectangular aperture disclosed in the embodiment of the present invention;
Fig. 8 loads the emulation directional diagram of thin single-layer medium Broadband Micro-strip Patch Antenna on 17.4GHz frequency for a kind of rectangular aperture disclosed in the embodiment of the present invention.
Numeral and the corresponding component title represented by letter in figure:
1. microband paste 11. loads gap 1 and loads gap two
13. load gap 3 2. impedance matching microstrip line 3. medium substrate
4. feeding microstrip line.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with embodiment and embodiment, the present invention is further detailed explanation.
Embodiment
As shown in Figure 1-2, a kind of rectangular aperture loads thin single-layer medium Broadband Micro-strip Patch Antenna, comprises medium substrate 3, microband paste 1, feeding microstrip line 4 and impedance matching microstrip line 2; Described medium substrate 3 is the dielectric-slab of the low relative dielectric constant of thin individual layer, concrete, and described medium substrate 3 thickness is 0.508mm, and relative dielectric constant is 2.2; The service band that described rectangular aperture loads thin single-layer medium Broadband Micro-strip Patch Antenna is the Ku wave band of wavelength 17.12 ~ 19.07mm, centre frequency λ
0wavelength is 18.18mm.The present invention adopts slim medium substrate 3, is conducive to the design of micro-band power division network and reduces antenna weights; Adopt the medium substrate 3 of individual layer, antenna structure can be made on the one hand the simplest, on the other hand the material of antenna and processing cost are down to minimum.
Described medium substrate 3 is provided with the described microband paste 1 of rectangle, the middle part of described microband paste 1 has three consistent size and the rectangle parallel with two narrow limits about it loads gap 1, load gap 2 12 and load gap 3 13, described loading gap 2 12 is opened in the centre of described microband paste 1 time broadside, described loading gap 1 and load gap 3 13 and be opened in broadside on described microband paste 1 and symmetrical about described loading gap 2 12, concrete, the length of described microband paste 1 is 0.473 λ
0, width is 0.287 λ
0, described loading gap 1, load gap 2 12 and load the length in gap 3 13 and be 0.237 λ
0, stitching wide is 0.15 ~ 0.2mm; Described loading gap 1 loads gap 3 13 apart from the Distance geometry on left narrow limit and is 0.167 λ apart from the distance on right narrow limit
0, the described microband paste 1 of rectangle is overall in W type structure after offering and loading gap.
The upper end, narrow limit, the right side of described microband paste 1 is provided with feed port (not shown), described feed port is connected with described impedance matching microstrip line 2, described impedance matching microstrip line 2 is the L shape structure of opening towards lower left, described impedance matching microstrip line 2 width is 0.88mm, lateral length is 2.94mm, longitudinal length is 2.46mm, and the left end of described impedance matching microstrip line 2 is connected with described feed port.The other end of described impedance matching microstrip line 2 is connected with described feeding microstrip line 4, described impedance matching microstrip line 2, feeding microstrip line 4 are coplanar with described microband paste 1, can be printed on medium substrate 3 together with micro-band power division network, reduce the difficulty of processing of large-scale plane microstrip antenna battle array; The impedance matching microstrip line 2 that one section has the L shape structure of impedance matching function is increased between the feed port and rectangular microband paste 1 of feeding microstrip line 4, increase tuning range on the one hand, the bandwidth of broadening antenna, can reduce entire physical size on the other hand, be convenient to unit group battle array; Form antenna array when loading thin single-layer medium Broadband Micro-strip Patch Antenna by plural described rectangular aperture, during with narrow edge direction for scanning direction, narrow limit is only 0.287 λ
0, scanning direction adjacent cells mutual coupling is weakened, and the operating frequency of described antenna array is 15.73 ~ 17.52GHz, and service band is the Ku wave band of wavelength 17.12 ~ 19.07mm, centre frequency λ
0wavelength is 18.18mm.
When micro-strip paster antenna adopts above-mentioned version, be applied to the equally distributed single layer microstrip patch antenna battle array of Ku wave band unit 8,8 described Radiative antenna elements and the micro-band power division network of coplanar 1:8 form a linear array, a final and coaxial connector passes through vertical welding, and this linear array is connected with T/R assembly can be extended to large-scale Subarray active phase array antenna.Suppose that given frequency range is fl ~ fh, wherein fl is low resonant frequency, fh is high resonance frequency, f0 is centre frequency, can calculate according to Ansoft HFSS simulation software: at centre frequency f0 place, guide wavelength is 14mm slightly, can extrapolate accordingly, at low resonant frequency fl place, guide wavelength is 14.7mm; At high resonance frequency fh place, guide wavelength is 13.3mm.
Fig. 3 emulates the curve of gained S11 parameter with frequency change with Ansoft HFSS, and under the condition of S11≤-10dB, the impedance bandwidth of experiment test is 15.73GHz ~ 17.52GHz, and namely the relative bandwidth of antenna is 10.6%.
Fig. 4-8 gives the emulation directional diagram on antenna of the present invention five frequencies, compares these curvilinear figures, and in whole impedance bandwidth, directional diagram is without obvious deterioration.
In a word, the present invention proposes a kind of rectangular aperture loads that thin single-layer medium Broadband Micro-strip Patch Antenna is simple and compact for structure, cross section is little, lightweight, cost is low, processing is simple and broadening bandwidth.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (5)
1. rectangular aperture loads a thin single-layer medium Broadband Micro-strip Patch Antenna, it is characterized in that, comprises medium substrate, microband paste, feeding microstrip line and impedance matching microstrip line; Described medium substrate is the medium substrate of the low relative dielectric constant of thin individual layer, and described medium substrate is provided with the described microband paste of rectangle; The middle part of described microband paste has three consistent size and the rectangle parallel with two narrow limits about it loads gap one, load gap two and load gap three, described loading gap two is opened in the centre of broadside under described microband paste, described loading gap one and load gap three and be opened in broadside on described microband paste and symmetrical about described loading gap one; The upper end, narrow limit, the right side of described microband paste is provided with feed port, described feed port is connected with described impedance matching microstrip line, described impedance matching microstrip line is the L shape structure of opening towards lower left, and the left end of described impedance matching microstrip line is connected with described feed port.The other end of described impedance matching microstrip line is connected with described feeding microstrip line.
2. a kind of rectangular aperture loads thin single-layer medium Broadband Micro-strip Patch Antenna according to claim 1, it is characterized in that, described dielectric substrate thickness is 0.508mm, and relative dielectric constant is 2.2; The service band that described rectangular aperture loads thin single-layer medium Broadband Micro-strip Patch Antenna is the Ku wave band of wavelength 17.12 ~ 19.07mm, centre frequency λ
0wavelength is 18.18mm.
3. a kind of rectangular aperture according to claim 1 loads thin single-layer medium Broadband Micro-strip Patch Antenna, it is characterized in that, the length of described microband paste is 0.473 λ
0, width is 0.287 λ
0, described loading gap one, load gap two and load the length in gap three and be 0.237 λ
0, stitching wide is 0.15 ~ 0.2mm; The distance on Distance geometry loading narrow limit apart from the right side, gap three on narrow limit apart from a left side, described loading gap one is 0.167 λ
0.
4. a kind of rectangular aperture according to claim 1 loads thin single-layer medium Broadband Micro-strip Patch Antenna, it is characterized in that, described impedance matching microstrip line, feeding microstrip line and described microband paste are coplanar, described impedance matching micro belt line width is 0.88mm, lateral length is 2.94mm, and longitudinal length is 2.46mm.
5. a kind of rectangular aperture according to claim 1 loads thin single-layer medium Broadband Micro-strip Patch Antenna, it is characterized in that, load thin single-layer medium Broadband Micro-strip Patch Antenna by plural described rectangular aperture and form antenna array, during with narrow edge direction for scanning direction, the operating frequency of described antenna array is 15.73 ~ 17.52GHz, service band is the Ku wave band of wavelength 17.12 ~ 19.07mm, centre frequency λ
0wavelength is 18.18mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169341.6A CN104795637A (en) | 2015-04-10 | 2015-04-10 | Rectangular-slot-loaded thin monolayer medium broadband microstrip patch antenna |
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|---|---|---|---|
| CN201510169341.6A CN104795637A (en) | 2015-04-10 | 2015-04-10 | Rectangular-slot-loaded thin monolayer medium broadband microstrip patch antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609926A (en) * | 2016-03-02 | 2016-05-25 | 青岛中科移动物联科技有限公司 | Small-sized PCB antenna suitable for Bluetooth system |
| CN107768782A (en) * | 2017-09-27 | 2018-03-06 | 华南理工大学 | Duplexer based on rectangular microstrip structure |
| CN107768788A (en) * | 2017-09-27 | 2018-03-06 | 华南理工大学 | Duplexer based on oval microstrip structure |
| CN108736153A (en) * | 2018-04-26 | 2018-11-02 | 西安电子科技大学 | A kind of three frequency low section paster antennas |
| CN112490652A (en) * | 2020-11-19 | 2021-03-12 | 榆林学院 | X-band multi-slot loading broadband millimeter wave microstrip antenna |
| CN113555679A (en) * | 2021-07-14 | 2021-10-26 | Oppo广东移动通信有限公司 | Antenna unit and electronic device |
| CN114122679A (en) * | 2020-08-31 | 2022-03-01 | 西安电子科技大学 | Meander-loaded airborne knife-type antenna |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609926A (en) * | 2016-03-02 | 2016-05-25 | 青岛中科移动物联科技有限公司 | Small-sized PCB antenna suitable for Bluetooth system |
| CN107768788B (en) * | 2017-09-27 | 2021-01-19 | 华南理工大学 | Duplexer based on elliptical microstrip structure |
| CN107768782A (en) * | 2017-09-27 | 2018-03-06 | 华南理工大学 | Duplexer based on rectangular microstrip structure |
| CN107768788A (en) * | 2017-09-27 | 2018-03-06 | 华南理工大学 | Duplexer based on oval microstrip structure |
| CN107768782B (en) * | 2017-09-27 | 2021-01-19 | 华南理工大学 | Duplexer based on rectangular microstrip structure |
| CN108736153A (en) * | 2018-04-26 | 2018-11-02 | 西安电子科技大学 | A kind of three frequency low section paster antennas |
| CN108736153B (en) * | 2018-04-26 | 2021-01-12 | 西安电子科技大学 | Three-frequency low-profile patch antenna |
| CN114122679A (en) * | 2020-08-31 | 2022-03-01 | 西安电子科技大学 | Meander-loaded airborne knife-type antenna |
| CN114122679B (en) * | 2020-08-31 | 2023-01-24 | 西安电子科技大学 | Meander-loaded airborne knife-type antenna |
| CN112490652A (en) * | 2020-11-19 | 2021-03-12 | 榆林学院 | X-band multi-slot loading broadband millimeter wave microstrip antenna |
| CN112490652B (en) * | 2020-11-19 | 2023-06-06 | 榆林学院 | X-band multi-slot loaded broadband millimeter wave microstrip antenna |
| CN113555679A (en) * | 2021-07-14 | 2021-10-26 | Oppo广东移动通信有限公司 | Antenna unit and electronic device |
| CN113555679B (en) * | 2021-07-14 | 2023-11-10 | Oppo广东移动通信有限公司 | Antenna unit and electronic device |
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