CN102142607A - Broadband low-contour cavity-backed integrated antenna - Google Patents
Broadband low-contour cavity-backed integrated antenna Download PDFInfo
- Publication number
- CN102142607A CN102142607A CN2011100242276A CN201110024227A CN102142607A CN 102142607 A CN102142607 A CN 102142607A CN 2011100242276 A CN2011100242276 A CN 2011100242276A CN 201110024227 A CN201110024227 A CN 201110024227A CN 102142607 A CN102142607 A CN 102142607A
- Authority
- CN
- China
- Prior art keywords
- cavity
- antenna
- metal
- dielectric substrate
- broadband
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a broadband low-contour cavity-backed integrated antenna. The traditional product has the defects of large size and high processing cost. The broadband low-contour cavity-backed integrated antenna comprises a dielectric substrate, an annular metal strip coated on the upper surface of the dielectric substrate, a metal bed layer completely coated on the lower surface of the dielectric substrate, an electric interconnection array formed by sequentially arraying a plurality of electric interconnection units, a feed unit and a radiating unit. The metal strip, the metal bed layer and the electric interconnection array are defined to form a cavity structure. The duty cycle between any two adjacent electric interconnection units constituting the electric interconnection array is more than 1. The electric interconnection units are metallized through holes or metal columns penetrating through the metal strip, the dielectric substrate and the metal bed layer. The broadband low-contour cavity-backed integrated antenna provided by the invention has the advantages of large working bandwidth, high gain, high radiation efficiency, compact volume, simple structure, easiness for design and processing and low cost.
Description
Technical field
The invention belongs to microwave technical field, it is antenna integrated to relate to a kind of broadband low profile back-cavity, can be used as the antenna of radio frequency receiving and transmitting front end, is widely used in wireless communication systems such as mobile communication, satellite communication, radar, be particularly suitable for a little less than the received signal, need the application scenario of wide band high-gain antenna.
Background technology
As the critical component of communication system, antenna is widely used in the radio communication occasion.The quality of antenna performance has directly determined the performance of whole system.High performance antenna not only can significantly improve the performance of system, obtains good reception, can greatly alleviate the index pressure of follow-up radio circuit simultaneously, reduces the cost of system.Especially in application scenarios, space such as radar, satellites, be not only excellent radiance to the demand of antenna, and volume weight is also had strict restriction.Design has the easily conformal high performance antenna of low profile and is even more important under these occasions.
The implementation of traditional wire poliarizing antenna is varied, comprises element antenna, ring Shape antenna, slot antenna, aperture antenna and end-on-fire antenna or the like.Element antenna, ring Shape antenna etc. have making and simply are easy to advantages such as design, but the performance of the single radiating element of this type antenna is lower.The Waveguide slot slot antenna is applicable to the array antenna application, and single radiating element volume is little, forms the array sizes reduction, it is narrow that array antenna has main lobe width, directional diagram can figuration, the low good characteristic that waits of cross polarization level, and it is medium to be mainly used in the microwave and millimeter wave radar communications system.But the antenna volume that is based on the conventional metals guide technology is big, needs accurate mechanical processing technique could realize that given performance causes it with high costs, has limited its use on a large scale; The radiance of aperture antenna and end-on-fire antenna is all relatively good, but their volume is all bigger in actual applications, complex structure, and manufacturing cost is high.It is central in order to improve antenna radiation performance that back of the body cavity configuration often is applied to Antenna Design.But traditional back of the body chamber is made of smooth metallic cavity, the big processing cost height of volume.
Summary of the invention
It is antenna integrated to the purpose of this invention is to provide a kind of broadband low profile back-cavity, and this new antenna working band is wide, and gain is high, and radiation efficiency is good, and volume compact is simple in structure, is easy to design processing, with low cost.The existing low profile back-cavity slot antenna bandwidth of operation restriction of the big quantum jump of this antenna, relative bandwidth can reach 30% ~ 50%, has greatly widened the application scenario of low profile back-cavity antenna.
Broadband of the present invention low profile back-cavity antenna integrated comprising: dielectric substrate, be coated in the ring-like metal band and the complete metal stratum that is coated in the dielectric substrate lower surface of dielectric substrate upper surface, a plurality of electrical interconnection sequence of unit that run through metal band, dielectric substrate and metal stratum are arranged electrical interconnection array, feed element and the radiating element that constitutes.Metal band, metal stratum and electrical interconnection array are enclosed cavity body structure.Duty ratio between any two adjacent electrical interconnection unit of formation electrical interconnection array is greater than 1.
Described dielectric substrate is the single-layer medium substrate.
Described ring-like metal band is the ring type structure with opening, or closed ring type structure.
Described electrical interconnection unit is plated-through hole or the metal column that runs through metal band, dielectric substrate and metal stratum.
Described radiating element is monopole antenna, dipole antenna, folded doublet or the paster antenna of upper surface that is arranged on the dielectric substrate in ring-like metal band intermediate blank zone.
Metal band is to have under the ring type structure of opening, and described feed element is for to be stretched into by ring-like metal band opening part, and the microstrip line that links to each other with radiating element, coplane strip line or coplanar waveguide transmission line; Metal band is under the closed ring type structure, and described feed element is for being arranged on ring-like metal band intermediate blank zone, and passes metal stratum and dielectric substrate, the coaxial line that the while links to each other with radiating element.
Broadband of the present invention low profile back-cavity is antenna integrated to be to be equivalent to the novel low profile back cavity configuration of conventional metals cavity by the manufacturing of employing planar circuit process technology on common dielectric substrate, thereby greatly reduces the volume of cavity-backed radiator antenna.With traditional cavity-backed radiator antenna need accurate machining different be that this new antenna and follow-up feeding network can adopt the common planar circuit technology to make (as printed circuit board (PCB), LTCC etc.), cost of manufacture significantly reduces, and can realize seamless integrated with planar circuit.Compare with the flat plane antenna that constitutes by identical radiating element, the present invention is by introducing efficient and the gain that back of the body cavity configuration has significantly improved antenna, simultaneously the metal band opening edge along and radiating element between intercouple and make cavity zone produce new parasitic cavity resonant pattern in that metal band covers, thereby greatly broadening the bandwidth of operation of antenna.
Concrete operation principle: feed line is incorporated into electromagnetic wave the radiating element that connects later, a part electromagnetic energy by the radiating element direct radiation to the space, another part energy is coupled to the cavity zone that is covered by metal band on next door and is formed parasitic cavity resonant by radiating element, and finally from the opening edge of metal band along being radiated to the space.Two kinds of radiation mechanism actings in conjunction make the bandwidth of operation of antenna greatly widen, and carry on the back radiation efficiency and gain that cavity configuration has significantly improved antenna simultaneously.The operating frequency that just can regulate antenna easily by the size of regulating radiating element and cavity.
Broadband of the present invention low profile back-cavity is antenna integrated to have following beneficial effect:
A. this new antenna is on the basis that keeps conventional planar antenna advantages such as easily processing is easy of integration, the introducing of back of the body cavity configuration is not only by suppressing efficient and the gain that the surface wave effect has improved antenna, radiating element is coupled to energy the cavity zone of metal band covering and produces parasitic cavity resonant simultaneously, thereby along forming new radiation, the effect of two kinds of radiation modes makes the very big broadening of the bandwidth of operation of antenna at the opening edge of metal band.Entire antenna realizes on dielectric substrate fully, makes antenna volume greatly reduce, and entire antenna can be seamless integrated with radio frequency receiving and transmitting front end and even the complete plane of whole system, improved level of integrated system.
B. this new antenna structure is succinct, and operation principle is simple and clear.The spacing that only needs to regulate between radiating element size, cavity size, metal band edge and the radiating element in design process just can obtain needed performance.Structural parameters are few, the time that has shortened design greatly and optimized.
C. this new antenna is made simple and convenient, and total just can realize fully with the common plane circuit.Need precision optical machinery processing to compare with traditional cavity-backed radiator antenna, manufacturing speed is fast, and is with low cost.
Description of drawings
Fig. 1 is the perspective view of one embodiment of the invention;
Fig. 2 is the structural representation on the upper surface metal band plane of living in of Fig. 1;
Fig. 3 is the structural representation on the plane of living in, lower surface metal stratum of Fig. 1;
Fig. 4 is embodiment 1 return loss plot figure;
Fig. 5 is the antenna pattern of embodiment 1 when 26GHz;
Fig. 6 is the antenna pattern of embodiment 1 when 35GHz;
Fig. 7 is the surface structure schematic diagram of another embodiment of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, low profile back-cavity antenna integrated thickness that comprises in a kind of broadband is 0.5 millimeter dielectric substrate 1-1, and there is metal level on the two sides of dielectric substrate 1-1, is respectively metal band 1-2 and metal stratum 1-3.Running through metal band 1-2, dielectric substrate 1-1 and metal stratum 1-3, diameter is arranged is 0.3 millimeter through hole, and through-hole wall is coated with metal, forms electrical interconnection unit 1-4.A plurality of electrical interconnections unit 1-4 sequence arrangement be have a rectangle outline line and the rectangle length of side be the electrical interconnection array of 10.0 millimeters and 6.12 millimeters, the electrical interconnection cell orifice spacing that constitutes the electrical interconnection array is identical, is 0.45 millimeter.Metal band 1-2, metal stratum 1-3 and electrical interconnection array institute inclusion region form the rectangle cavity that upper surface has oblong openings.As Fig. 2, metal band 1-2 cuts out " ∩ " shape metal band that has opening that a small rectangle metal level forms in the middle part of upper surface metal level from Far Left toward right; The coplane strip line 1-5(rectangle frame of broken lines that is equipped with as feed line in the opening part interposition of metal band 1-2 comprises part) enter cavity from Far Left, the width of two metal line of coplane strip line 1-5 is 0.2 millimeter, the width of intermediate air gap is 0.15 millimeter, and length is 4.93 millimeters; The top of coplane strip line 1-5 comprises part with the square frame of broken lines of folded dipole 1-6(as radiating element) be connected, the length of folded dipole 1-6 is 3.1 millimeters, width is 0.3 millimeter, and middle air gap width is 0.15 millimeter, folding arm and the metal band of folded dipole 1-6
-2 the narrowest place, gap width is 0.16 millimeter; Coplane strip line 1-5, folded dipole 1-6 and cavity three's the plane of symmetry overlaps.As Fig. 3, lower surface metal layer is the metal stratum 1-3 of complete covering.
The concrete structure geometric parameter is as follows:
| L c ?(mm) | 10 | W c (mm) | 6.12 |
| L cps (mm) | 4.93 | L dip ? (mm) | 3.1 |
| W cps (mm) | 0.2 | W dip (mm) | 0.3 |
| g cps (mm) | 0.15 | g dip (mm) | 0.15 |
| W l (mm) | 0.25 | W g (mm) | 0.16 |
| d(mm) | 0.3 | d p (mm) | 0.45 |
Wherein
L c With
W c Be the length and the width of rectangle cavity,
L Cps ,
W Cps With
g Cps Be respectively the length of coplane strip line, the width of metal wire and the width of intermediate air gap,
L Dip ,
W Dip With
g Dip Be respectively the width of length, width and the intermediate air gap of folded dipole,
W l For the metal band edge in cavity limit wall and the cavity in the length direction distance,
W g For the metal band edge in cavity limit wall and the cavity in the Width distance,
dBe the through-hole diameter of formation electrical interconnection unit,
d p For constituting the adjacent through-holes hole heart distance of electrical interconnection array.
The antenna integrated concrete manufacture process of this broadband low profile back-cavity is: the dielectric substrate of at first choosing corresponding parameter, intermediate etch at the metal level of overwrite media substrate upper surface carves a rectangle white space, makes that going up metal level forms the ring-like metal band of " ∩ " shape that has opening.Run through metal band, dielectric substrate and metal stratum and beat a series of metal through holes with uniform interval in place, constitute the rectangle cavity that a limit wall and end face all have opening.Make the coplane strip line that is used for feed and be used to produce the folded dipole of radiation in the rectangle white space of the ring-like metal band of " ∩ " shape, the top of coplane strip line links to each other with folded dipole.This new antenna had both kept the radiation characteristic of conventional metals cavity-backed radiator antenna high-gain, again because of introduced new parasitic cavity resonant pattern greatly broadening the bandwidth of operation of flat plane antenna.Select suitable cavity and radiating element size, can regulate the operating frequency of this antenna easily.Entire antenna can be fully seamless integrated with radio frequency receiving and transmitting front end and even whole system fully by the realization of common planar circuit fabrication technology.
The gain curve of Fig. 4 shows that the coupling bandwidth of operation of this antenna is up to 30%.No matter this antenna of the directional diagram of Fig. 5 and Fig. 6 surface still is that the H mask has good directionality at the E face in working band, the good radiation characteristic of low-cross polarization level etc.
Embodiment 2
As shown in Figure 7, a kind of broadband low profile back-cavity is antenna integrated, comprises square single-layer medium substrate 2-1, is coated in the ring-like metal band 2-2 and the complete metal stratum that is coated in the dielectric substrate lower surface of closed circle of dielectric substrate upper surface.Running through metal band 2-2, dielectric substrate 2-1 and metal stratum has square metal column, as electrical interconnection unit 2-3.A plurality of electrical interconnections unit 2-3 rotates in proper order and is arranged as the electrical interconnection array with circular wheel profile, and the duty ratio between any two adjacent electrical interconnection unit of formation electrical interconnection array is greater than 1.Metal band 2-2, metal stratum and electrical interconnection array institute inclusion region form the circular cavity that upper surface has circular open.At the central closing of metal band 2-2 circular patch 2-4 as radiating element is arranged, link to each other with paster after running through metal stratum and dielectric substrate as the internal probe of the coaxial line of feed element.
Though described two embodiment for illustrative purposes with reference to the accompanying drawings, but will be understood that the present invention is not limited to this two specific embodiments, those of ordinary skills can implement various other changes and improvements under the prerequisite that does not depart from the scope of the present invention.
Claims (10)
1. the broadband low profile back-cavity is antenna integrated, it is characterized in that this antenna comprises
Dielectric substrate,
Be coated in the ring-like metal band and the complete metal stratum that is coated in the dielectric substrate lower surface of dielectric substrate upper surface,
A plurality of electrical interconnection sequence of unit that run through metal band, dielectric substrate and metal stratum are arranged the electrical interconnection array that constitutes,
Feed element and radiating element;
Metal band, metal stratum and electrical interconnection array are enclosed cavity body structure.
2. broadband as claimed in claim 1 low profile back-cavity is antenna integrated, it is characterized in that described dielectric substrate is the single-layer medium substrate.
3. broadband as claimed in claim 1 low profile back-cavity is antenna integrated, it is characterized in that described ring-like metal band is the ring type structure with opening.
4. broadband as claimed in claim 1 low profile back-cavity is antenna integrated, it is characterized in that described ring-like metal band is closed ring type structure.
5. broadband as claimed in claim 1 low profile back-cavity is antenna integrated, it is characterized in that described electrical interconnection unit is the plated-through hole that runs through metal band, dielectric substrate and metal stratum.
6. broadband as claimed in claim 1 low profile back-cavity is antenna integrated, it is characterized in that described electrical interconnection unit is the metal column that runs through metal band, dielectric substrate and metal stratum.
7. broadband as claimed in claim 1 low profile back-cavity is antenna integrated, it is characterized in that described radiating element is monopole antenna, dipole antenna, folded doublet or the paster antenna of upper surface that is arranged on the dielectric substrate in ring-like metal band intermediate blank zone.
8. broadband as claimed in claim 3 low profile back-cavity is antenna integrated, it is characterized in that described feed element for to be stretched into by ring-like metal band opening part, and the microstrip line that links to each other with radiating element, coplane strip line or coplanar waveguide transmission line.
9. broadband as claimed in claim 4 low profile back-cavity is antenna integrated, it is characterized in that described feed element for being arranged on ring-like metal band intermediate blank zone, and passes metal stratum and dielectric substrate, the coaxial line that links to each other with radiating element simultaneously.
10. broadband as claimed in claim 1 low profile back-cavity is antenna integrated, it is characterized in that constituting duty ratio between any two adjacent electrical interconnection unit of electrical interconnection array greater than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100242276A CN102142607A (en) | 2011-01-21 | 2011-01-21 | Broadband low-contour cavity-backed integrated antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100242276A CN102142607A (en) | 2011-01-21 | 2011-01-21 | Broadband low-contour cavity-backed integrated antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102142607A true CN102142607A (en) | 2011-08-03 |
Family
ID=44409943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100242276A Pending CN102142607A (en) | 2011-01-21 | 2011-01-21 | Broadband low-contour cavity-backed integrated antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102142607A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972238A (en) * | 2017-04-30 | 2017-07-21 | 电子科技大学 | A kind of plane mutli-system integration antenna for mobile terminal |
| CN104682020B (en) * | 2015-02-13 | 2018-01-16 | 江苏大学 | A kind of electromagnetic wave energy of embedded power combiner collects array antenna |
| CN112736472A (en) * | 2020-12-25 | 2021-04-30 | 无锡国芯微电子系统有限公司 | Millimeter wave broadband patch antenna |
| CN113224549A (en) * | 2020-08-20 | 2021-08-06 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Ultra-wideband array antenna integrated with H-shaped coupling structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160522A (en) * | 1998-04-02 | 2000-12-12 | L3 Communications Corporation, Randtron Antenna Systems Division | Cavity-backed slot antenna |
| US7283095B2 (en) * | 2006-02-08 | 2007-10-16 | Northrop Grumman Corporation | Antenna assembly including z-pinning for electrical continuity |
| CN101179149A (en) * | 2007-11-12 | 2008-05-14 | 杭州电子科技大学 | One point coaxial feed low profile back-cavity circularly polarized antenna |
| CN101888016A (en) * | 2010-06-21 | 2010-11-17 | 哈尔滨工程大学 | Ultra wide band antenna with trap characteristic |
| CN201966319U (en) * | 2011-01-21 | 2011-09-07 | 杭州电子科技大学 | Wideband low-profile cavity backed integrated antenna |
-
2011
- 2011-01-21 CN CN2011100242276A patent/CN102142607A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160522A (en) * | 1998-04-02 | 2000-12-12 | L3 Communications Corporation, Randtron Antenna Systems Division | Cavity-backed slot antenna |
| US7283095B2 (en) * | 2006-02-08 | 2007-10-16 | Northrop Grumman Corporation | Antenna assembly including z-pinning for electrical continuity |
| CN101179149A (en) * | 2007-11-12 | 2008-05-14 | 杭州电子科技大学 | One point coaxial feed low profile back-cavity circularly polarized antenna |
| CN101888016A (en) * | 2010-06-21 | 2010-11-17 | 哈尔滨工程大学 | Ultra wide band antenna with trap characteristic |
| CN201966319U (en) * | 2011-01-21 | 2011-09-07 | 杭州电子科技大学 | Wideband low-profile cavity backed integrated antenna |
Non-Patent Citations (1)
| Title |
|---|
| 刘运林: "带金属柱的背腔式矩形贴片天线的谐振频率", 《西南交通大学学报》, vol. 39, no. 3, 30 June 2004 (2004-06-30), pages 311 - 313 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682020B (en) * | 2015-02-13 | 2018-01-16 | 江苏大学 | A kind of electromagnetic wave energy of embedded power combiner collects array antenna |
| CN106972238A (en) * | 2017-04-30 | 2017-07-21 | 电子科技大学 | A kind of plane mutli-system integration antenna for mobile terminal |
| CN106972238B (en) * | 2017-04-30 | 2023-07-25 | 电子科技大学 | Planar multisystem integrated antenna for mobile terminal |
| CN113224549A (en) * | 2020-08-20 | 2021-08-06 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Ultra-wideband array antenna integrated with H-shaped coupling structure |
| CN112736472A (en) * | 2020-12-25 | 2021-04-30 | 无锡国芯微电子系统有限公司 | Millimeter wave broadband patch antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101170214B (en) | Dimension reduction low profile rear cavity line polarization antenna | |
| CN201966319U (en) | Wideband low-profile cavity backed integrated antenna | |
| CN101183742B (en) | Rectangle substrate integrated waveguide back cavity linear polarization antenna | |
| CN101242027B (en) | Polarization antenna for directional coupler feedback low profile back cavity round | |
| CN101170213B (en) | Low profile rear cavity ring gap one-point short circuit round polarization antenna | |
| CN101179149B (en) | One point coaxial feed low profile back-cavity circularly polarized antenna | |
| CN108987911A (en) | A kind of millimeter wave wave beam forming micro-strip array antenna and design method based on SIW | |
| CN101179150B (en) | Metallized through-hole infinitesimal disturbance based low profile back-cavity circularly polarized antenna | |
| CN101170212A (en) | Common face wave guide single-point feedback rear cavity round polarization antenna | |
| CN107293852A (en) | The high-gain millimeter wave antenna of gap waveguide series feed | |
| CN108511924B (en) | Broadband end-fire antenna array for millimeter wave communication system | |
| CN203326117U (en) | Compact-structure 16-element broadband substrate integration waveguide back chamber antenna array | |
| CN102142619A (en) | Cavity backed double-slit integrated antenna with increased gain | |
| CN102142617A (en) | High gain integrated antenna based on high order cavity resonant mode | |
| CN101183743B (en) | Single feedback low profile back cavity dual-frequency bilinear polarization antenna | |
| CN201130710Y (en) | Directional coupler feed low contour back cavity circularly polarized antenna | |
| CN201117806Y (en) | Coplanar wave-guide single point power feeding back cavity circular-polarization antenna | |
| CN102142607A (en) | Broadband low-contour cavity-backed integrated antenna | |
| CN209266562U (en) | Medium integrates waveguide slot coupled chamber antenna | |
| CN203039100U (en) | Dual-channel dual-frequency-band MIMO microstrip antenna | |
| CN201117804Y (en) | Size reduced low contour back cavity linear polarization antenna | |
| CN202134661U (en) | Double seam integration antenna of back chamber of increased gain | |
| CN102509869A (en) | Micro-strip gradually-changing-slot antenna | |
| CN201966326U (en) | High-gain integrated antenna based on high order cavity resonant mode | |
| CN201117805Y (en) | Low contour back cavity annular gap one-point short circuit circular-polarization antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110803 |