CN101179155A - H face sectoral horn antenna including filter function - Google Patents
H face sectoral horn antenna including filter function Download PDFInfo
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- CN101179155A CN101179155A CNA2007101568267A CN200710156826A CN101179155A CN 101179155 A CN101179155 A CN 101179155A CN A2007101568267 A CNA2007101568267 A CN A2007101568267A CN 200710156826 A CN200710156826 A CN 200710156826A CN 101179155 A CN101179155 A CN 101179155A
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Abstract
The invention relates to an H-plane sectorial horn antenna with the function of a filter. The existing horn antenna that can not be planar integrated has a large size and a high processing cost. In the invention, a metal layer is plated at two faces of a dielectric substrate, and an upper metal layer is etched with a micro-strip line used for feeding and a micro-strip converter. A plurality of plated-through holes aligned circularly are installed by penetrating the upper metal layer, the dielectric substrate and a lower metal layer, thus forming a substrate integrated waveguide and an H-plane sectorial horn. Four perturbation plated-through holes are installed by penetrating the whole substrate on the medial axis inside the opening area of the H-plane sectorial horn, used for regulating the impedance matching and forming the filtering function. The new structure adopts the substrate integrated waveguide technology, so that the function equivalent to traditional metal H-plane sectorial horn is implemented on the normal dielectric substrate, meanwhile the filtering function of the traditional inductive post waveguide filter is successfully integrated. The dual-function integrated module is very compact in size; the whole structure can be manufactured by low cost PCB technology, and can seamlessly integrate with the system.
Description
Technical field
The invention belongs to microwave technical field, relate to a kind of H-plane sectoral horn (antenna) that comprises filter function that constitutes based on substrate integrated waveguide technology, can be used as the antenna of radio frequency receiving and transmitting front end, be applied to the radio communication occasion.It is not only the difunctional integration module of filter and antenna as a kind of flat plane antenna, and different with most flat plane antennas be that it is a kind of antenna that perpendicular polarization is provided, can be used for some special occasions.
Background technology
Traditional metal horn antenna is as a kind of standard antenna that is widely used in occasion such as antenna measurement, and it has, and gain is high, directionality is good, simple in structure, be easy to advantages such as design and manufacturing.But the shortcoming of this antenna is also clearly, and volume is big, with the complexity that is connected of subsequent conditioning circuit, and can't be integrated with the circuit plane.And the present multi-functional integration module integrated extensive concern that has been subjected to of filter and antenna particularly.In having the communication system of sensitive receiver, its radio-frequency front-end needs band pass filter that the Signal Separation of needs is come out, and the outer interference ratio desired signal of band is also strong under a lot of situations, and this is just very harsh to the index request of front end filter.A lot of scholars seek that integrated filter carries out pre-filtering to reduce the index request to subsequent conditioning circuit to signal on antenna.
At present in the world about the design of antenna and filter integration module mainly based on following three classes.The first kind is to adopt little band planar circuit structure to realize the difunctional integrated of filter and microstrip antenna.The difunctional module of this class can realize the antenna of volume compact horizontal polarization, but it generally needs to adopt multi-layer PCB technology to realize that cost is than higher.Another kind of is to adopt the form of conventional metals horn antenna to realize the difunctional integrated of filtering and radiation by some Metallic rod are installed in the actinal surface of horn antenna.This class antenna can keep the perpendicular polarization radiation characteristic of the high directionality high-gain of metal horn antenna well, but it exists the large volume of conventional metals horn antenna to be not easy to the integrated shortcoming in plane equally.Last big class is to realize the difunctional integrated of filtering radiation by the combination of studying frequency-selective surfaces and aperture antenna such as metal horn antenna and waveguide terminal opening array of radiators etc., reduces the RCS and the anti-external electromagnetic interference of system simultaneously.
The present Research of comprehensive filtering at present and the difunctional integration module of radiation still needs to study the high performance filter antenna that the new construction of adopting new technology is realized low-cost low profile as can be known.
Summary of the invention
The purpose of this invention is to provide a kind of H-plane sectoral horn (antenna) that comprises filter function that constitutes based on substrate integrated waveguide technology, this novel filter antenna has been realized the radiation characteristic of the perpendicular polarization that most flat plane antennas can't be realized on the basis of the low profile that keeps flat plane antenna.Its integrated effectively filtering characteristic of perceptual metal column loading waveguide filter on the basis of the radiation characteristic that has kept H-plane sectoral horn (antenna) high-gain, high directionality simultaneously.The volume compact of entire device, simple in structure, be easy to design and processing, cost is low, simultaneously can be fully seamless integrated with planar circuit.
The H-plane sectoral horn (antenna) that comprises filter function of the present invention comprises dielectric substrate, and the two sides of dielectric substrate is coated with metal level, is respectively to go up metal level and lower metal layer, and wherein lower metal layer is as the stratum; Last metal level etching is useful on the microstrip line of feed and the trapezoidal transducer of little band forms, and the output of trapezoidal transducer links to each other with the last metal level that constitutes substrate integration wave-guide, and input stretches out, as microstrip line; Run through metal level, dielectric substrate and lower metal layer and have a plurality of through holes, the through-hole wall plating, form plated-through hole, comprise parallel metal through hole that two row that constitute substrate integration wave-guide be arranged in parallel and the open gradually gradual change plated-through hole of two row that constitutes sectoral horn (antenna); The pitch of holes of the adjacent parallel metal through hole of formation substrate integration wave-guide is identical, the pitch of holes of the adjacent gradual change plated-through hole of formation sectoral horn (antenna) is identical, and the gradual change plated-through hole of sectoral horn (antenna) input is corresponding with the parallel metal lead to the hole site; The axis in sectoral horn (antenna) zone is provided with the perturbation plated-through hole that four inwalls that run through metal level, dielectric substrate and lower metal layer are coated with metal.
The diameter of described each plated-through hole that is used to constitute substrate integration wave-guide and sectoral horn (antenna) less than the centre frequency of antenna work corresponding air wavelength 1/10th, the ratio of the hole heart distance of the diameter of each plated-through hole and adjacent two plated-through holes is greater than 0.5.
The H-plane sectoral horn (antenna) that comprises filter function of the present invention is to be equivalent to traditional metal waveguide structure and metal H-plane sectoral horn (antenna) structure by the manufacturing of employing substrate integrated waveguide technology on common dielectric substrate, thereby has greatly reduced the volume of entire device.With conventional metals waveguide and H-plane sectoral horn (antenna) need accurate machining different be that this new device can adopt common PCB technology to make, cost of manufacture significantly reduces, and can realize seamless integrated with microstrip circuit.Structurally, substrate is the dielectric substrate with double-sided metallic, on dielectric substrate,, form the substrate integration wave-guide and the substrate integration wave-guide H-plane sectoral horn (antenna) that are equivalent to conventional metals waveguide and H-plane sectoral horn (antenna) to be interval with a series of metal through holes uniformly.The metal level etching is used for the microstrip line of feed on double-sided metallic, by the trapezoidal transducer between little band and the substrate integration wave-guide electromagnetic wave is introduced in the substrate integration wave-guide then.Again by substrate integration wave-guide to equivalent H-plane sectoral horn (antenna) feed based on the formation of substrate integrated waveguide technology, by the opening part of H-plane sectoral horn (antenna) the electromagnetic wave in the special frequency band is formed the antenna with filtering characteristic to space radiation more at last.
Concrete operation principle: electromagnetic wave is by feed microstrip line, be introduced in the H-plane sectoral horn (antenna) of the equivalence that constitutes by substrate integrated waveguide technology by substrate integration wave-guide again, the electromagnetic wave that will need frequency range through the filter action that is installed in four perceptual metal throuth holes in the H face sectoral horn via horn mouth towards aerial radiation, thereby form H-plane sectoral horn (antenna) with filtering characteristic.
Beneficial effect: the H-plane sectoral horn (antenna) that comprises filter function that constitutes based on substrate integrated waveguide technology has the following advantages:
A. this novel integrated filter antenna is on the basis of the filtering characteristic of integrated perceptual metal column waveguide filter, keep the good radiation characteristic of the high directionality high-gain etc. of traditional metal H-plane sectoral horn (antenna), provide most flat plane antennas not available perpendicular polarization radiation simultaneously.Total can realize on the single-layer medium substrate, not only makes the volume of whole difunctional integration module reduce widely, and whole module can be seamless integrated with system complete plane, improved the integrated level of system.
B. this novel integrated filter antenna structure is simple, and entire infrastructure comprises that feeding network can just realization on a common dielectric substrate.In design process, only need to regulate the subtended angle of equivalent sectoral horn (antenna), and the diameter and the spacing between the adjacent through-holes that are used to constitute the perceptual metal throuth hole of filter just can obtain needed filtering and radiance.Structural parameters are few, the time that has shortened design greatly and optimized.
C. this novel integrated filter antenna is made simple and convenient, just can realize with common PCB technology.Compare with the precision machined H-plane sectoral horn (antenna) of traditional needs, manufacturing speed is fast, and is with low cost.
Description of drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 is the metal-layer structure schematic diagram of going up of the present invention;
Fig. 3 is a lower metal layer structural representation of the present invention;
Fig. 4 is the return loss emulation of one embodiment of the invention and the comparison diagram of test result;
Fig. 5 is the test result of one embodiment of the invention E surface radiation directional diagram when 18.5GHz;
Fig. 6 is the test result of one embodiment of the invention H surface radiation directional diagram when 18.5GHz.
Embodiment
As shown in Figure 1, the H-plane sectoral horn (antenna) that comprises filter function comprises that thickness is 1.575 millimeters Rogers5880 dielectric substrates 10, and the two sides of dielectric substrate 10 is coated with metal level, is respectively to go up metal level 2 and lower metal layer 9, and wherein lower metal layer 9 is as the stratum.As Fig. 2, last metal level 2 etchings are useful on the trapezoidal transducer 8 of the microstrip line 1 of feed, little band forms, and the output of trapezoidal transducer 8 links to each other with the last metal level 2 that constitutes substrate integration wave-guide, and input stretches out, as microstrip line 1.The length of microstrip line 1 and width are respectively 6 millimeters and 5 millimeters, and the length of trapezoidal transducer 8 is 6 millimeters, and an end width that links to each other with metal level on the substrate integration wave-guide 2 is 4.2 millimeters.Running through metal level 2, dielectric substrate 10 and lower metal layer 9, to have diameter be 1 millimeter through hole, and through-hole wall is coated with metal, forms plated-through hole 3 and plated-through hole 7.It is that two row constitute substrate integration wave-guide 6 (frame of broken lines comprises part) that a plurality of plated-through holes 7 are arranged in parallel earlier at a certain distance, and the length of substrate integration wave-guide 6 and width are 10 millimeters.A plurality of plated-through holes 3 become sectoral horn (antenna) 5 (frame of broken lines comprise part) along its both sides with certain subtended angle sequence arrangement at the output of substrate integration wave-guide 6, the length of horn antenna 5 is 50 millimeters, dehiscing is 14 millimeters, and the pitch of holes of the plated-through hole on each limit of formation substrate integration wave-guide 6 and sectoral horn (antenna) 5 is 1.5 millimeters.In sectoral horn 5 zone, run through metal level 2, dielectric substrate 10 and lower metal layer 9 on its axis and have four perturbation plated-through holes 4 that are used to regulate impedance matching and formation filter function.The diameter of four perturbation plated-through holes 4 is respectively 0.8 millimeter, 2 millimeters, 2 millimeters and 2 millimeters, and the input diameter of close sectoral horn is that the distance of the initiating terminal of 0.8 millimeter perturbation plated-through hole and sectoral horn is 10.1 millimeters.The spacing that four perturbation plated-through holes are 4 is followed successively by 5.72 millimeters, 6.52 millimeters and 7.1 millimeters.
The concrete structure geometric parameter is as follows:
L wherein
MsAnd W
MsBe the length and the width of feed microstrip line, L
TaperAnd W
TaperBe the width that the length of trapezoidal transducer and itself and substrate integration wave-guide one end join, L
SiwAnd W
SiwBe the length and the width of the substrate integration wave-guide of feed, L
hAnd W
hBe the length of the H-plane sectoral horn (antenna) of equivalence and the width of radiating aperture, d
1, d
2, d
3And d
4Be respectively the diameter of the perceptual plated-through hole that is used to constitute filter, L
1, L
2, L
3And L
4Be respectively top minimum perceptual plated-through hole and the distance of equivalent H face sectoral horn input and the distance between the adjacent through-holes, d is a through-hole diameter, d
pBe the hole heart distance of through hole, h is a substrate thickness.
| L ms(mm) L taper(mm) L siw(mm) L h(mm) L 1(mm) L 2(mm) L 3(mm) L 4(mm) d(mm) h(mm) | 6.0 6.0 10.0 50 10.1 5.72 6.52 7.1 1.0 1.575 | W ms(mm) W taper(mm) W siw(mm) W h(mm) d 1(mm) d 2(mm) d 3(mm) d 4(mm) d p(mm) | 5.07 4.2 10.0 14 0.8 2.0 2.0 2.0 1.5 |
This concrete manufacture process that comprises the H-plane sectoral horn (antenna) of filter function is: at first choose the substrate of corresponding parameter, the trapezoidal transducer that metal level etches the microstrip line that is used for feed and little band forms on substrate is with itself and substrate integration wave-guide switching.Beat a series of metal through holes at substrate with uniform interval again, constitute the substrate integration wave-guide of feed and the H-plane sectoral horn (antenna) of equivalence respectively.Select suitable aperture and pitch of holes, avoid the energy in waveguide and the loudspeaker outwards to reveal.Make a call to the plated-through hole of four different sizes at last at the inside of equivalent H-plane sectoral horn (antenna) correct position.So just intactly constituted the difunctional integration module of integrated filter and H-plane sectoral horn (antenna).This novel plug had both kept the filtering characteristic of perceptual metal column metal waveguide filter, had also kept the radiation characteristic of the high directionality high-gain etc. of the fan-shaped metal horn antenna of H face simultaneously.Select the perceptual metal throuth hole of suitable diameter and suitable interval, can regulate the operating frequency of this difunctional module easily.Whole module can realize by common PCB technology fully, can be fully seamless integrated with system, make simple, with low cost.
Fig. 4 is the test result of this H-plane sectoral horn (antenna) antenna performance to Fig. 6.Fig. 4 emulation testing result shows this antenna emittance effectively in centre frequency is the working band of 18.5GHz.The directional diagram test result surface of Fig. 5～6 this antenna when operating frequency 18.5GHz has the characteristic of omnidirectional radiation at the E mask, all presents good directional radiation properties in the H face.
Claims (2)
1. comprise the H-plane sectoral horn (antenna) of filter function, comprise dielectric substrate, it is characterized in that: the two sides of dielectric substrate is coated with metal level, is respectively to go up metal level and lower metal layer, and wherein lower metal layer is as the stratum; Last metal level etching is useful on the microstrip line of feed and the trapezoidal transducer of little band forms, and the output of trapezoidal transducer links to each other with the last metal level that constitutes substrate integration wave-guide, and input stretches out, as microstrip line; Run through metal level, dielectric substrate and lower metal layer and have a plurality of through holes, the through-hole wall plating, form plated-through hole, comprise parallel metal through hole that two row that constitute substrate integration wave-guide be arranged in parallel and the open gradually gradual change plated-through hole of two row that constitutes sectoral horn (antenna); The pitch of holes of the adjacent parallel metal through hole of formation substrate integration wave-guide is identical, the pitch of holes of the adjacent gradual change plated-through hole of formation sectoral horn (antenna) is identical, and the gradual change plated-through hole of sectoral horn (antenna) input is corresponding with the parallel metal lead to the hole site; The axis in sectoral horn (antenna) zone is provided with the perturbation plated-through hole that four inwalls that run through metal level, dielectric substrate and lower metal layer are coated with metal.
2. the H-plane sectoral horn (antenna) that comprises filter function as claimed in claim 1, the diameter that it is characterized in that described parallel metal through hole that is used to constitute substrate integration wave-guide and sectoral horn (antenna) and gradual change plated-through hole less than the centre frequency of antenna work corresponding air wavelength 1/10th, the ratio of the hole heart distance of the diameter of each plated-through hole and adjacent two plated-through holes is greater than 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101568267A CN101179155B (en) | 2007-11-12 | 2007-11-12 | H face sectoral horn antenna including filter function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101568267A CN101179155B (en) | 2007-11-12 | 2007-11-12 | H face sectoral horn antenna including filter function |
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| CN101179155A true CN101179155A (en) | 2008-05-14 |
| CN101179155B CN101179155B (en) | 2011-08-24 |
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| CN105226395B (en) * | 2015-09-25 | 2017-11-28 | 中国人民解放军理工大学 | Broad-band chip integrated waveguide electromagnetic horn without wide wall |
| CN109638408A (en) * | 2018-12-05 | 2019-04-16 | 上海无线电设备研究所 | A kind of V-band antenna applied to Quasi dynamic contracting than test |
| CN109638408B (en) * | 2018-12-05 | 2021-06-04 | 上海无线电设备研究所 | V-band antenna applied to quasi-dynamic scaling test |
| CN111009732A (en) * | 2019-12-03 | 2020-04-14 | 西安电子科技大学 | Planar horn antenna and filter antenna with filtering function |
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|---|---|
| CN101179155B (en) | 2011-08-24 |
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