CN101682124A - Tapered slot antenna - Google Patents
Tapered slot antenna Download PDFInfo
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- CN101682124A CN101682124A CN200880014654A CN200880014654A CN101682124A CN 101682124 A CN101682124 A CN 101682124A CN 200880014654 A CN200880014654 A CN 200880014654A CN 200880014654 A CN200880014654 A CN 200880014654A CN 101682124 A CN101682124 A CN 101682124A
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- tapered
- radiated element
- reflector
- slot antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention provides a tapered slot antenna which performs transmission and reception via a tapered emission opening which is optimal for MIMO. An antenna is formed by two or more emission elementseach having a tapered emission opening. The emission element includes a reflector at the tip end of the tapered emission opening side. Since the reflector is formed at the tip end of the emission element, the tapered emission opening is formed both in the emission element and the reflector. Thus, it is possible to obtain an axis length required for a wide band.
Description
Technical field
The present invention relates to a kind of tapered slot antenna (tapered slot antenna), it is carried out via tapered emission opening and sends and receive.
Background technology
The standardization of WiMAX (micro-wave access global inter communication) has been devoted in the communication of determining with the IEEE committee (Institute of Electrical and Electric Engineers) of international norm.The zone of the about 50km of WiMAX covering radius, this feasible communication of having guaranteed with peaked 70Mbps.WiMAX is designed to use in the terminal part office of recipient's communication network via telephone circuit or optical fiber, and the WLAN (local area network (LAN)) that interior of building communicates is different with being intended to.
In the field of the WLAN that comprises WiMAX, needed higher transfer rate.In order to satisfy this needs, will research and develop MIMO (multiple-input and multiple-output).MIMO is meant a kind of technology by the frequency band that uses a plurality of antennas to come growth data to send and receive.
In MIMO, different data send from sender side simultaneously via a plurality of antennas, and these data are in the reception of a plurality of antennas place of receiver-side, to be synthesized.Thereby, in pseudo-mode the communication band between transmitter side and the receiver side is inserted in the wide frequency band, so that realize high-speed communication.Utilize this MIMO, in theory, communication bandwidth increases according to the number of antenna.For example, if two antennas are arranged, the bandwidth of communication band is increased to the twice bandwidth so.If three antennas are arranged, the bandwidth of communication channel is increased to three times of bandwidth so.
As a kind of electric wire, the tapered slot antenna with tapered emission opening is arranged, wherein the emission port of slot antenna is expanded gradually.This tapered slot antenna has wide band frequency characteristics, and is just paying close attention to used as the antenna that can be used in MIMO.For example, announce disclosed this tapered slot antenna among the 1-3 in patent.
Patent documentation 1: Japanese unexamined patent disclosure H11-298232
Patent documentation 2: Japanese unexamined patent disclosure 2006-314127
Patent documentation 3: Japanese unexamined patent disclosure 2006-67251
Summary of the invention
The problem to be solved in the present invention
As the tapered slot antenna that in MIMO, uses, need in broadband, to carry out transmission/reception, and need such size, promptly can be installed in the installing space inside that is set in the shell.
Yet, utilize patent to announce disclosed tapered slot antenna among the 1-3, a kind of like this tradeoff of basic existence, that is, when the shaft length of guaranteeing tapered emission opening was used to carry out broadband, the size of electric wire enlarged.Therefore, these tapered slot antennas need be improved to optimum structure with as the tapered slot antenna that uses in MIMO.
The tapered slot antenna that the purpose of this invention is to provide a kind of MIMO of being best suited for.
The method of dealing with problems
To achieve these goals, tapered slot antenna according to the present invention comprises the combination of two or more radiated elements, in this radiated element each all has tapered emission opening, and wherein this radiated element is included in the reflector of the top ends office on the tapered emission opening side.
Effect of the present invention
The present invention has reflector at the top end of the tapered emission opening of radiated element, therefore can form small dimension, and obtain the needed shaft length in broadband simultaneously.
Description of drawings
Fig. 1 is the perspective view that the tapered slot antenna of embodiment according to the present invention 1 is shown;
Fig. 2 is the end view that the tapered slot antenna of embodiment according to the present invention 1 is shown;
Fig. 3 is the plane graph that the tapered slot antenna of embodiment according to the present invention 1 is shown;
Fig. 4 is the cutaway view of the A viewpoint intercepting from Fig. 3;
Fig. 5 is the enlarged drawing of the B part shown in Fig. 3;
Fig. 6 is the end view of actual size that the tapered slot antenna of embodiment according to the present invention 1 is shown;
Fig. 7 is the plane graph of actual size that the tapered slot antenna of embodiment according to the present invention 1 is shown;
Fig. 8 is the diagram of directivity characteristic that the tapered slot antenna of embodiment according to the present invention 1 is shown;
Fig. 9 is the diagram of directivity characteristic that the tapered slot antenna of embodiment according to the present invention 1 is shown;
Figure 10 is the perspective view that the tapered slot antenna of embodiment according to the present invention 2 is shown;
Figure 11 is the perspective view that the tapered slot antenna of embodiment according to the present invention 3 is shown;
Figure 12 is the perspective view that this tapered slot antenna of embodiment according to the present invention 3 is shown;
Figure 13 is the perspective view that the tapered slot antenna of embodiment according to the present invention 4 is shown;
Figure 14 is the perspective view that this tapered slot antenna of embodiment according to the present invention 4 is shown;
Figure 15 is the perspective view that the tapered slot antenna of embodiment according to the present invention 5 is shown;
Figure 16 is the perspective view that this tapered slot antenna of embodiment according to the present invention 5 is shown.
Reference numeral
1,2,3,4 radiated elements
1a, 2a, 3a, the tapered emission opening of 4a radiated element
5,6,7,8 reflectors
9 Direct Power feeding means
Implement optimum way of the present invention
Hereinafter, will be described in detail with reference to the attached drawings exemplary embodiment of the present invention.
As Fig. 1, Figure 10-shown in Figure 14, tapered slot antenna according to exemplary embodiment of the present invention forms by the two or more radiated elements 1,2,3 and 4 combinations that will have tapered emission opening 1a, 2a, 3a and 4a, and this radiated element 1,2,3 and 4 is included in the reflector 5,6,7 and 8 of the top ends office of tapered emission opening.
Tapered slot antenna according to exemplary embodiment of the present invention is the travelling-wave type flat plane antenna.When the time spent of doing of playing transmitting antenna, with power feed to radiated element 1,2,3 and 4 o'clock, antenna sends to surperficial parallel direction with electric wire with electromagnetic wave.Radiated element 1,2,3 and 4 emission port 1a, 2a, 3a and 4a form pyramidal structure,, form wherein the structure that the width in the slit of the position that forms radiated element 1,2,3 and 4 enlarges gradually that is.Thus, although it is a flat plane antenna, that is, this radiated element is an one-dimentional structure when transmit direction is watched, from its transmission be a kind of like this electromagnetic wave, this electromagnetic emission figure from horizontal surface and vertical surface is about being symmetry almost each other.
Exemplary embodiment of the present invention is configured to form reflector 5,6,7 and 8 in the top ends office of radiated element 1,2,3 and 4.Therefore, by radiated element 1,2,3 and 4 and reflector 5,6,7 and 8 above form emission port 1a, 2a, 3a and 4a, can guarantee the needed shaft length in broadband.
In addition, radiated element 1,2,3 and 4 head portion are reflectors 5,6,7 and 8.In order to make reflector 5,6,7 and 8 to carry out reflection function to the radiated element 1,2,3 and 4 of other combinations, because the characteristic of tapered slot antenna, this reflector 5,6,7 and 8 need be in the head portion bending of radiated element 1,2,3 and 4, with the radiated element 1,2,3 and 4 towards described other combinations.In the situation of Fig. 1,5 pairs of radiated elements of the reflector of radiated element 12 are carried out reflection function, 6 pairs of radiated elements of the reflector of radiated element 23 are carried out reflection function, 7 pairs of radiated elements of the reflector of radiated element 34 are carried out reflection function, and 8 pairs of radiated elements of the reflector of radiated element 41 are carried out reflection function.
Therefore, even the shaft length of tapered emission opening 1a, 2a, 3a and 4a is fixed as needed length, but since the reflector 5,6,7 and 8 that is used for outrigger shaft length from the head portion of radiated element 1,2,3 and 4 towards turning to horizontal direction bending, but the external dimensions of radiated element 1,2,3 and 4 also can be suppressed to little specification.
In exemplary embodiment of the present invention, four radiated elements 1,2,3 and 4 are by installing with interleaved mode and combination radially.Yet the present invention has more than and is confined to the structure shown in the accompanying drawing.As long as a plurality of radiated elements are made up radially, just can adopt any structure by setting to receive from the electromagnetic wave of a plurality of directions or towards a plurality of direction launching electromagnetic waves.Promptly, can adopt any such structure, that is, utilize this structure, reflector 5,6,7 and 8 in the top ends office of radiated element 1,2,3 and 4 can be carried out reflection function to the radiated element of other combinations, and described radiated element makes up radially.
When this tapered slot antenna is used as transmitting antenna, is used for the reflector 5,6,7 of radiated element 1,2,3 and 4 and 8 reflection function and is meant that it gives from the function of the electromagnetic directivity of tapered emission opening 1a, 2a, 3a and 4a transmission.In addition, when this tapered slot antenna is used as reception antenna, is used for the reflector 5,6,7 of radiated element 1,2,3 and 4 and 8 reflection function and is meant that it gives the function of higher sensitivity to the electromagnetic wave that comes from the direction that taper radiated element 1a, 2a, 3a and 4a are set.
Below, will tapered slot antenna according to an exemplary embodiment of the present invention be described by reference example.
(example 1)
As shown in Figure 1, the tapered slot antenna of embodiment according to the present invention 1 has four radiated elements 1,2,3 and 4.
As illustrated in fig. 1 and 2, these four radiated elements 1,2,3 and 4 are formed by metallic plate, and from substrate portion 1b, 2b, 3b and 4b towards head portion 1c, 2c, tapered emission opening 1a, 2a, 3a and the 4a of 3c and 4c taper be formed on this metallic plate.Yet, it should be noted that radiated element 1,2,3 and 4 is not limited to have this type of tapered emission opening 1a, 2a, 3a and the 4a of metallic plate.For example, can also adopt wherein that conductive membranes is formed on the insulation board, and tapered emission opening 1a, 2a, 3a and 4a are formed on the structure on the conductive membranes.That is,, send and receive, just can adopt the structure of any kind as long as can carry out via tapered emission opening 1a, 2a, 3a and 4a for radiated element 1,2,3 and 4.
Tapered emission opening 1a, 2a, 3a and 4a form conical in shape from substrate portion 1b, 2b, 3b and the 4b of radiated element 1,2,3 and 4 towards head portion 1c, 2c, 3c and 4c, that is, become big mode gradually with aperture area and form.
These four radiated elements 1,2,3 and 4 are combination radially by making substrate portion 1b, 2b, 3b and 4b side be closely adjacent to each other.In Fig. 1, these four radiated elements 1,2,3 and 4 are by installing and combination radioactively with interleaved mode.When with substrate portion 1b, 2b, 3b and the 4b of these four radiated elements 1,2,3 and 4 in abutting connection with the time, these four emitters 1,2,3 and 4 are electrically connected.Though substrate portion 1b, the 2b of these four radiated elements 1,2,3 and 4,3b and 4b are electrically connected and are closely adjacent to each other, and are not only to be confined to this situation.Can also adopt such structure, wherein four radiated elements 1,2,3 and 4 substrate portion 1b, 2b, 3b and 4b are isolated from each other, and substrate portion 1b, 2b, 3b and the 4b of these four radiated elements 1,2,3 and 4 are for example by using the short-circuit piece (not shown) to be electrically connected, radioactively to make up this four radiated elements 1,2,3 and 4.
As shown in figures 1 and 3, radiated element 1,2,3 and 4 is included in the reflector 5,6,7 and 8 at head portion 1c, 2c, 3c and 4c place on the side of tapered emission opening 1a, 2a, 3a and 4a.
In example shown in Figure 11, reflector 5,6,7 and 8 and head portion 1c, 2c, 3c and the 4c of radiated element 1,2,3 and 4 form.As shown in figures 1 and 3, reflector 5,6,7 and 8 is turning on the horizontal direction crooked at head portion 1c, 2c, 3c and 4c from radiated element 1,2,3 and 4.In the situation of Fig. 1 and Fig. 3,5 pairs of radiated elements of the reflector of radiated element 12 are carried out reflection function, 6 pairs of radiated elements of the reflector of radiated element 23 are carried out reflection function, 7 pairs of radiated elements of the reflector of radiated element 34 are carried out reflection function, and 8 pairs of radiated elements of the reflector of radiated element 41 are carried out reflection function.
When this tapered slot antenna as the transmitting antenna time, reflector 5,6,7 and 8 the reflection function to radiated element 1,2,3 and 4 are meant that it provides the function of the electromagnetic directional characteristic that sends from tapered emission opening 1a, 2a, 3a and 4a.In addition, when this tapered slot antenna as the reception antenna time, reflector 5,6,7 and 8 the reflection function to radiated element 1,2,3 and 4 are meant that it gives the function of higher sensitivity to the electromagnetic wave that comes from the direction that tapered emission opening 1a, 2a, 3a and 4a are set.
As shown in Figure 1, tapered emission opening 1a, 2a, 3a and 4a are formed on radiated element 1,2,3 and 4 and reflector 5,6,7 and 8 tops.Promptly, as shown in Figure 1, tapered emission opening 1a, 2a, 3a and 4a form conical in shape from substrate portion 1b, 2b, 3b and the 4b of radiated element 1,2,3 and 4 towards head portion 1c, 2c, 3c and 4c, simultaneously the reflector 5,6,7 by utilizing radiated element 1,2,3 and 4 and 8 and extend towards the head portion of reflector 5,6,7 and 8.Tapered emission opening 1a, 2a, 3a and 4a are in the side upper shed of head portion 5a, 6a, 7a and the 8a of reflector 5,6,7 and 8.Utilize said structure, tapered emission opening 1a, 2a, 3a and 4a can be the wavelength of fixed-frequency or the shaft length more than the wavelength that will use.
As shown in Figure 6 and Figure 7, utilize the example 1 shown in Fig. 1 and Fig. 3, the wavelength of supposing used frequency is λ, so 1.2 λ is fixed as the shaft length of tapered emission opening 1a, 2a, 3a and 4a.As shown in Figure 6 and Figure 7, the shaft length of tapered emission opening 1a, 2a, 3a and 4a " 1.2 λ " can utilize the shaft length (0.6 λ) of shaft length (0.6 the λ)+ reflector 5,6,7 of radiated element 1,2,3 and 4 and 8 and obtain.Fig. 6 and tapered emission opening shaft length partly shown in Figure 7 only illustrate with example, as long as and can fix a wavelength (λ) or the above shaft length of wavelength of used frequency, just can by with the corresponding shaft length that changes tapered emission opening of expanded phase of frequency band.This is obtained by result of experiment.
Wish that the used frequency that radio terminal allows is 2.5GHz and 3.5GHz.Wavelength of used frequency or shaft length more than the wavelength are fixed as the shaft length of tapered emission opening 1a, 2a, 3a and 4a.Therefore, can be corresponding with frequency band, thus make it possible to realize broadband.
Radiated element 1,2,3 and 4 has the Direct Power feed structure that is used to carry out transmission and reception.For the Direct Power feed structure of the use shown in Fig. 1 to Fig. 3, be coaxial cable.This coaxial cable 9 comprises center conductor 9a and external conductor (huge gesture) 9b, this external conductor 9b be insulation and be provided with around center conductor 9a.This coaxial cable 9 is arranged on the position that tapered emission opening 1a, 2a, 3a and 4a on the side with substrate portion 1b, 2b, 3b and the 4b of radiated element 1,2,3 and 4 intersect.Each external conductor 9b is electrically connected to and each tapered emission opening 1a, 2a, a side that 3a is relative with 4a, and each center conductor 9a is electrically connected to corresponding another opposite side.
As depicted in figs. 1 and 2, the Direct Power feed structure comprises match circuit part 10, is used for mating about radiated element 1,2,3 and 4.Match circuit part 10 as shown in figs. 1 and 3 is configured to towards what tapered emission opening 1a, 2a, 3a and 4a stretched out stretch out sheet.Yet, be noted that this match circuit part 10 is not limited to this sheet that stretches out illustrated in figures 1 and 2.Can adopt can be used as can radiated element 1,2,3 and 4 and Direct Power feed structure 9 between any kind of the match circuit 10 that mates.
Below, description be according to the slot antenna of example 1 situation as transmitting antenna.
When making the shaft length (electrical length) of tapered emission opening 1a, 2a, 3a and 4a when being fed to the opposed side edges of this tapered emission opening 1a, 2a, 3a and 4a from Direct Power feed structure 9, cause resonance at this tapered emission opening 1a, 2a, 3a and 4a place for the power of quarter-wave frequency.Thereby electromagnetic wave is sent out.
At this moment, 5 pairs of radiated elements of the reflector of radiated element 12 are carried out reflex, 6 pairs of radiated elements of the reflector of radiated element 23 are carried out reflex, and 7 pairs of radiated elements of the reflector of radiated element 34 are carried out reflex, and 8 pairs of radiated elements of the reflector of radiated element 41 are carried out reflex.Utilize this process, have directional characteristic owing to the effect of reflector 5,6,7 and 8 becomes from the electromagnetic transmit direction of tapered emission opening 1a, the 2a of radiated element 1,2,3 and 4,3a and 4a emission.
Fig. 8 and Fig. 9 show the directional characteristic when the tapered slot antenna according to example shown in Figure 11 is used as transmitting antenna.Fig. 8 shows directional characteristic in the horizontal direction, and Fig. 9 shows directional characteristic in vertical direction.
Below, description be according to the slot antenna of example 1 situation as reception antenna.
When making the shaft length (electrical length) of tapered emission opening 1a, 2a, 3a and 4a when entering for the power of quarter-wave frequency, on this tapered emission opening 1a, 2a, 3a and 4a, induce electric field and magnetic field respectively, and receive via Direct Power feed structure 9.
At this moment, 5 pairs of radiated elements of the reflector of radiated element 12 are carried out reflex, 6 pairs of radiated elements of the reflector of radiated element 23 are carried out reflex, and 7 pairs of radiated elements of the reflector of radiated element 34 are carried out reflex, and 8 pairs of radiated elements of the reflector of radiated element 41 are carried out reflex.Utilize this process, because reflector 5,6,7 and 8 effect, for the electromagnetic wave that the direction from tapered emission opening 1a, 2a, 3a and the 4a of radiated element 1,2,3 and 4 enters, high sensitivity is realized having in this slit.
Example 1 of the present invention is configured to form reflector 5,6,7 and 8 in the top ends office of radiated element 1,2,3 and 4.Therefore, by radiated element 1,2,3 and 4 and reflector 5,6,7 and 8 above form tapered emission opening 1a, 2a, 3a and 4a, can the needed shaft length of fixed broadband.
In order to make reflector 5,6,7 and 8 to carry out reflex to the radiated element 1,2,3 and 4 of other combinations, because the characteristic of tapered slot antenna, reflector 5,6,7 and 8 need be in the top ends office bending of radiated element 1,2,3 and 4, with the radiated element 1,2,3 and 4 in the face of described other combinations.In situation shown in Figure 1,5 pairs of radiated elements of the reflector of radiated element 12 are carried out reflex, 6 pairs of radiated elements of the reflector of radiated element 23 are carried out reflex, 7 pairs of radiated elements of the reflector of radiated element 34 are carried out reflex, and 8 pairs of radiated elements of the reflector of radiated element 41 are carried out reflex.
Therefore, even the shaft length of tapered emission opening 1a, 2a, 3a and 4a is fixed as needed length, because towards turning to horizontal direction bending, radiated element 1,2,3 and 4 external dimensions also can be suppressed to little specification to the reflector 5,6,7 and 8 that is used for outrigger shaft length from the head portion of radiated element 1,2,3 and 4.
In example 1 of the present invention, reflector 5,6,7 and 8 and radiated element 1,2,3 and 4 form and reflector 5,6,7 and 8 top ends office bendings in radiated element 1,2,3 and 4.Thereby, be used for electromagnetic reactance component at reflector bending area place and diminish, therefore can easily finish radiated element 1,2,3 and 4 and the coupling of Direct Power feed structure 9.And, as mentioned above,, can reduce manufacturing cost by forming reflector 5,6,7 and 8 with radiated element 1,2,3 and 4.In addition, by forming reflector 5,6,7 and 8 with radiated element 1,2,3 and 4, and reflector 5,6,7 and 8 and radiated element 1,2,3 and 4 above form tapered emission opening 1a, 2a, 3a and 4a, can simplify manufacturing step.Therefore, can further reduce manufacturing cost.
As shown in Figure 1, about tapered emission opening 1a, 2a, 3a and the 4a of radiated element 1,2,3 and 4, the width W 2 of the following regional A2 in vertical separation zone can be arranged to narrower than the width W 1 of the upper zone A1 in vertical separation zone.Utilize this structure, when will be installed to the shell that is used for WLAN, the needed device of WLAN (not shown) can be installed in the narrower part of width of following regional A2 according to the tapered slot antenna of example 1.Therefore, the inside that is used for the shell of WLAN can be effectively utilized.
In example 1 of the present invention, four radiated elements 1,2,3 and 4 combinations.Yet radiated element 1,2,3 that will make up and 4 number are not limited only to 4.As long as the reflector 5,6,7 and 8 in the top ends office of radiated element 1,2,3 and 4 can be carried out reflex to the radiated element of other combinations, promptly, as long as it is the combination of two or more radiated elements, just without limits to the setting of the number of the radiated element that will make up.
(example 2)
In tapered slot antenna, the reflector 5,6,7 that is formed on head portion 1c, 2c, 3c and the 4c place of radiated element 1,2,3 with 4 is set at the direction different with the situation of Fig. 1 with 8 bending direction according to example shown in Figure 10 2.
In the situation of Figure 10,5 pairs of radiated elements of the reflector of radiated element 14 are carried out reflex, 6 pairs of radiated elements of the reflector of radiated element 21 are carried out reflex, 7 pairs of radiated elements of the reflector of radiated element 32 are carried out reflex, and 8 pairs of radiated elements of the reflector of radiated element 43 are carried out reflex.
(example 3)
In Fig. 1 and example shown in Figure 10,, the width W 2 of the following regional A2 in vertical separation zone is arranged to narrower than the width W 1 of the upper zone A1 in vertical separation zone about tapered emission opening 1a, 2a, 3a and the 4a of radiated element 1,2,3 and 4.Yet the present invention is not limited only to this situation.
As shown in figure 11, about tapered emission opening 1a, 2a, 3a and the 4a of radiated element 1,2,3 and 4, the width W 2 of the following regional A2 in vertical separation zone can be arranged to equal the width W 1 of the upper zone A1 in vertical separation zone.
In example 3 as shown in figure 11, can be set at the direction opposite with being formed on the reflector 5,6,7 at head portion 1c, 2c, 3c and 4c place of radiated element 1,2,3 and 4 and 8 bending direction, as shown in figure 12 with the situation of Figure 11.
According to as 11 identical with the structure of example 1 shown in Figure 1 with other structures of the tapered slot antenna of example shown in Figure 12.
(example 4)
As shown in figure 11, will the upper zone A1 of tapered emission opening 1a, 2a, 3a and the 4a place vertical separation of radiated element 1,2,3 and 4 and below regional A2 be set at and have wide width.Yet the present invention is not limited in this situation.
As shown in figure 13, the upper zone A1 of tapered emission opening 1a, 2a, 3a and the 4a place vertical separation of radiated element 1,2,3 and 4 and below width W 3 and the W4 of regional A2 be set at narrow.
As shown in figure 14, it should be noted that here the reflector 5,6,7 at head portion 1c, the 2c, 3c and the 4c place that are formed on radiated element 1,2,3 and 4 and 8 bending direction are set at opposite with those directions of Figure 13.
As shown in figure 13, the upper zone A1 of tapered emission opening 1a, 2a, 3a and the 4a place vertical separation of radiated element 1,2,3 and 4 and below width W 3 and the W4 of regional A2 be set at narrow.Therefore, when this tapered slot antenna is installed to the shell that is used for WLAN, the needed device of WLAN (not shown) can be installed in width W 3 and the narrower part of W4 of upper zone A1 and following regional A2.Therefore, the inside that is used for the shell of WLAN can be utilized effectively.
(example 5)
In example shown in Figure 1, coaxial cable is as Direct Power feed structure 9.Yet the present invention is not limited in this situation.
For the Direct Power feed structure 9 of use shown in Figure 15, be microstrip line.This microstrip line 9 is arranged on the position that tapered emission opening 1a, 2a, 3a and 4a on the side with substrate portion 1b, 2b, 3b and the 4b of radiated element 1,2,3 and 4 intersect.Wire harness (not shown) is electrically connected to and each tapered emission opening 1a, 2a, a side that 3a is relative with 4a, and another wire harness 9c is by insulating spacer 9d and electric insulation, so that be electrically connected to described relative opposite side.
For the Direct Power feed structure 9 of the use shown in Figure 16, be the structure of the lines that form by two surfaces that utilize printed circuit board (PCB).This printed circuit board (PCB) 11 is molded as band shape, and lines 12 are formed on two surface.This printed circuit board (PCB) 11 be arranged on the side of substrate portion 1b, 2b, 3b and the 4b of radiated element 1,2,3 and 4 on the position that intersects of tapered emission opening 1a, 2a, 3a and 4a.The rear side lines (not shown) of this printed circuit board (PCB) 11 is electrically connected to and each tapered emission opening 1a, 2a, a side that 3a is relative with 4a, and face side lines 12 (not shown) of this circuit board 11 are electrically connected to described relative opposite side via being formed on the through hole (not shown) on this circuit board 11.
In the above description, power is fed to radiated element by the Direct Power feed structure.Yet the present invention is not limited in this situation.For example, can replace this Direct Power feed structure with other power feed structure.As other power feed structure, consider so-called indirect power feed structure, wherein match circuit partly is installed to the top of power feed line, and power is fed to an opposite side of tapered emission opening via this match circuit part.Sending and receiving to utilize this indirect power feed structure to finish.That is to say, send and receive, just can adopt the power feed structure of any kind of as long as can carry out by radiated element.
Although described the present invention by reference example (and example), the present invention also not only is confined to above-mentioned those embodiment (and example).Within the scope of the invention, the various corrections expected of those skilled in the art can be applied on structure of the present invention and the details.
The application requires the priority based on the Japanese patent application NO.2007-132108 of submission on May 17th, 2007, and its whole contents combination therewith for your guidance.
Industrial applicibility
Have the structure of reflector by adopting at the head portion of radiated element, the present invention can Overcome tradeoff, that is, the fixedly shaft length of tapered emission opening and the expansion on the antenna size. Therefore, the subulate slot sky of the optimum of the present invention's antenna that can be provided for using among the MIMO Line. What need not to mention is that tapered slot antenna of the present invention not only can be applied to MIMO's Antenna, but also can be applied to the antenna of other purposes.
Claims (9)
1. a tapered slot antenna comprises the combination of two or more radiated elements, and each this radiated element all has tapered emission opening, wherein
Described radiated element is included in the reflector of the top ends office on the described tapered emission opening side.
2. tapered slot antenna according to claim 1, wherein said tapered emission opening is formed on the top of described radiated element and described reflector.
3. tapered slot antenna according to claim 2, wherein said tapered emission opening partly form a wavelength or shaft length that wavelength is above of guaranteeing used frequency.
4. tapered slot antenna according to claim 1, wherein said reflector is carried out reflex to another radiated element outside the radiated element of described combination.
5. tapered slot antenna according to claim 1, wherein said reflector and described radiated element are integrally formed.
6. tapered slot antenna according to claim 1, wherein said two or more radiated elements make up radially.
7. tapered slot antenna according to claim 6, wherein said two or more radiated elements are by installing and combination radially with interleaved mode.
8. tapered slot antenna according to claim 1, wherein said radiated element have the Direct Power feed structure that is used to carry out transmission and reception.
9. tapered slot antenna according to claim 7, wherein said Direct Power feed structure comprises the match circuit part, this match circuit part is mated with respect to described radiated element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP132108/2007 | 2007-05-17 | ||
| JP2007132108 | 2007-05-17 | ||
| PCT/JP2008/058879 WO2008143105A1 (en) | 2007-05-17 | 2008-05-14 | Tapered slot antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101682124A true CN101682124A (en) | 2010-03-24 |
Family
ID=40031814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880014654A Withdrawn CN101682124A (en) | 2007-05-17 | 2008-05-14 | Tapered slot antenna |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5088706B2 (en) |
| KR (1) | KR20090122458A (en) |
| CN (1) | CN101682124A (en) |
| WO (1) | WO2008143105A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4924622B2 (en) * | 2009-01-21 | 2012-04-25 | 三菱電機株式会社 | Tapered slot antenna and taper slot array antenna apparatus using the same |
| JP6810004B2 (en) * | 2017-09-05 | 2021-01-06 | Kddi株式会社 | Antenna device |
| JP7255893B2 (en) * | 2020-12-28 | 2023-04-11 | Ｎｅｃプラットフォームズ株式会社 | tapered slot antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370659A (en) * | 1981-07-20 | 1983-01-25 | Sperry Corporation | Antenna |
| JP3216485B2 (en) * | 1995-08-04 | 2001-10-09 | 三菱電機株式会社 | Broadband notch antenna |
| KR100385573B1 (en) * | 2001-02-05 | 2003-05-27 | 이상건 | Antenna and microwave detecting device |
| EP1393412A1 (en) * | 2001-04-26 | 2004-03-03 | The University Of British Columbia | Ultra-wideband antennas |
| US6882322B1 (en) * | 2003-10-14 | 2005-04-19 | Bae Systems Information And Electronic Systems Integration Inc. | Gapless concatenated Vivaldi notch/meander line loaded antennas |
-
2008
- 2008-05-14 WO PCT/JP2008/058879 patent/WO2008143105A1/en active Application Filing
- 2008-05-14 CN CN200880014654A patent/CN101682124A/en not_active Withdrawn
- 2008-05-14 JP JP2009515178A patent/JP5088706B2/en not_active Expired - Fee Related
- 2008-05-14 KR KR1020097019939A patent/KR20090122458A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| KR20090122458A (en) | 2009-11-30 |
| JPWO2008143105A1 (en) | 2010-08-05 |
| JP5088706B2 (en) | 2012-12-05 |
| WO2008143105A1 (en) | 2008-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Open date: 20100324 |