WO2004086563A1 - ルーネベルグレンズおよびその製造方法 - Google Patents
ルーネベルグレンズおよびその製造方法 Download PDFInfo
- Publication number
- WO2004086563A1 WO2004086563A1 PCT/JP2004/002656 JP2004002656W WO2004086563A1 WO 2004086563 A1 WO2004086563 A1 WO 2004086563A1 JP 2004002656 W JP2004002656 W JP 2004002656W WO 2004086563 A1 WO2004086563 A1 WO 2004086563A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dielectric constant
- resin
- luneberg lens
- titanate
- beads
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 20
- 239000011324 bead Substances 0.000 claims abstract description 47
- 239000010410 layer Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000011256 inorganic filler Substances 0.000 claims abstract description 15
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 10
- 239000002356 single layer Substances 0.000 claims abstract description 3
- 238000005187 foaming Methods 0.000 claims description 21
- 230000005484 gravity Effects 0.000 claims description 21
- 239000006260 foam Substances 0.000 claims description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000004088 foaming agent Substances 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical group [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 3
- 229910002113 barium titanate Inorganic materials 0.000 claims description 3
- 210000003918 fraction a Anatomy 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 claims description 2
- 239000004604 Blowing Agent Substances 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 9
- 239000004793 Polystyrene Substances 0.000 description 8
- 239000008188 pellet Substances 0.000 description 7
- 229920002223 polystyrene Polymers 0.000 description 7
- 238000010097 foam moulding Methods 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000012508 resin bead Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
- H01Q25/008—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device lens fed multibeam arrays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
- B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
- H01Q15/08—Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/23—Combinations of reflecting surfaces with refracting or diffracting devices
-
- 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
- H01Q19/06—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 refracting or diffracting devices, e.g. lens
- H01Q19/062—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 refracting or diffracting devices, e.g. lens for focusing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249986—Void-containing component contains also a solid fiber or solid particle
Definitions
- the present invention relates to a method for producing a radio wave transmitting / receiving rope having excellent electrical characteristics.
- Japanese Patent Application Laid-Open No. 3-179805 Japanese Patent Publication No. 56-17767
- Japanese Patent Application Laid-Open No. 5-334934 Japanese Patent Application Laid-Open No. 6-6126
- Japanese Patent Application Laid-Open No. And JP-A-9-1130137 and JP-A-2002-197923.
- Japanese Unexamined Patent Publication No. 3-179805 uses a non-foamed dielectric as a lens material
- Japanese Patent Publication No. 56-17767 uses a foamed dielectric
- Japanese Patent Publication No. 56-17767 to Japanese Patent Application Laid-Open No. 2002-197923 describe a foamed dielectric containing filler.
- GZT gain / (noise) temperature
- sidelobes In the case of a Runel-Glens antenna, in particular, it is used as a multibeam antenna or an antenna for mobile communication, so it has the same focal length and the same gain (or G / T) for radio waves from any direction. The same side lobe characteristics are required.
- the side-mouth characteristics are particularly important because they are affected by adjacent satellites or other antennas in the vicinity or affect other antennas. It is a characteristic, for example, the side lobe of the receiving antenna is required to be lower than the numerical values listed in (l) E IAJ CPR-5104A and (2) ITU-R recommendation (for BSS reception).
- the side lobe is a kind of noise and has a power of 1Z100 or less of the main beam, so it is easily affected by various elements of the antenna. In the case of a lens antenna, the effect of minute variations in the relative permittivity in the lens layer is greatly affected.
- the Luneberg lens is a lens made of a dielectric material with a relative dielectric constant ⁇ of 1 to 2 inside, and in order to realize the relative dielectric constant, the inclusion of gas such as air is indispensable. .
- the gas is contained by foaming, but the foaming must be controlled uniformly in any part of the lens. Considering the foaming agent dispersion, the uniformity of heat addition at thick wall, and the uniformity of resin melt viscosity. It was difficult to produce a Luneberg lens having uniform sidelobes.
- the dielectric when the dielectric is a composite dielectric composed of three components of an olefin resin, a high dielectric constant inorganic filler, and a gas, the relative dielectric constant of each component is 2 to 3, 100 or more, Since it is significantly different from 1, it is extremely difficult to mix them and produce a composite dielectric having a uniform relative dielectric constant at any position, and in synergy with the difficulty in controlling foaming, It has been difficult to produce a good Luneberg lens that satisfies the sidelobe characteristics for radio waves from any direction.
- Luneberg lenses are generally composed of multiple dielectric layers made of foamed PS (polystyrene).
- PS polystyrene
- the expansion ratio is 5 or less when the relative dielectric constant is ⁇ 1.2
- the expansion ratio is 3 or less when the relative dielectric constant is ⁇ 1.4
- the expansion ratio is 2 or less when the relative dielectric constant is ⁇ 1.65.
- the foaming ratio of a general foam is generally 20 to 50 times, and if the foaming ratio is 5 or less, molding is performed. Therefore, it is difficult to produce a homogeneous foam with a low expansion ratio as described above.
- the force for producing pre-expanded beads in advance For a low-foam material such as PS, at this stage, only a slight foaming occurs, so that the expansion ratio is uniform.
- the production of beads was difficult, and it was impossible to obtain a homogeneous lens because the expansion ratio distribution was wide, ranging from non-foamed to foamed 10 times or more. .
- lenses manufactured by such a difficult method naturally increase the production yield and thus increase the cost.
- the Luneberg lens made of foamed PS has a problem that the foaming ratio is extremely low and the mass is high (heavy).
- the dielectric consists of three components: an olefin resin, a high dielectric constant inorganic filler, and a gas.
- the specific gravities are 0.9 and 4-5, so uniform mixing is difficult.
- the relative dielectric constants of these components are significantly different from 2 to 3, 100 or more, and 1, non-uniform mixing appears as non-uniform electrical characteristics, resulting in a dielectric material that is electrically uniform. This is because it cannot be provided.
- the filler since the filler is present in the thin resin film formed at the time of foaming, the foam is easily broken compared to the non-filer-based system, and it becomes increasingly difficult to uniformly foam.
- an object of the present invention is to provide a Luneberg lens which satisfies the required characteristics for both the gain and the side lobe, has high homogeneity, is lightweight, and can be manufactured at low cost by mass production.
- a polyolefin resin and Z ′ or a derivative thereof and a high dielectric constant inorganic filler are mixed in a volume ratio of resin 99 to 50: filler 1 to 50.
- a foaming agent is added to the mixed resin mixture to perform prefoaming, and the resulting prefoamed beads are formed into a single layer structure or a material having a different dielectric constant.
- a Luneberg lens having a multilayer structure in which a plurality of layers are combined, wherein a dielectric foam layer having a dielectric constant of at least 1.5 or more is formed of classified and pre-foamed beads, and a gas in the dielectric foam layer is formed.
- f (A) ⁇ a, A ave Provide a Luneberg lens, wherein 0.0.05 ⁇ f (A) ⁇ 0.1.
- the high dielectric constant inorganic filler used for this lens is preferably made of titanium oxide, titanate, zirconate, or a mixture thereof. It is preferable that the titanate is barium titanate, sudronium titanate, calcium titanate, magnesium titanate, or the like. Zirconate is also useful for fine-tuning the non-dielectric constant of titanium oxide and adjusting its temperature dependence by mixing with titanium oxide. .
- Classification and sorting of the pre-expanded beads forming the dielectric foam layer having a relative dielectric constant of 1.5 or more can be performed by classification and sorting based on specific gravity or dimensions.
- the Luneberg lens is a process of mixing a polyolefin resin and Z or a derivative thereof and a high dielectric constant inorganic filler in a volume ratio of resin 99 to 50: filler 1 to 50,
- the pre-expanded beads thus obtained are manufactured through a process of classifying and sorting the pre-expanded beads according to specific gravity or dimensions, and a process of forming the classified and selected pre-expanded beads.
- the present invention also provides this manufacturing method.
- the molding is performed by a bead foam molding method.
- FIG. 1 is a sectional view showing an embodiment of the lens of the present invention.
- FIG. 2 is a cross-sectional view of another embodiment.
- FIG. 3 is a diagram showing a method of a performance evaluation test. _
- FIG. 4 is a diagram showing the specific gravity distribution of the expanded beads with filler.
- FIG. 5 is a diagram showing a specific gravity distribution of each lot in classification and sorting by specific gravity.
- FIG. 6 is a diagram showing a specific gravity distribution at each mouth in classification and sorting based on weight dimensions.
- FIG. 7 is a diagram showing a concept of designing a relative dielectric constant of a Luneberg lens. BEST MODE FOR CARRYING OUT THE INVENTION
- r is the radius of the hemisphere nuclear la
- R is a different ⁇ sphere nucleus 1 b _ n
- This lens 1 the primary radiator 2 whose position can be adjusted, the holder 3 of the primary radiator whose elevation angle can be adjusted, and the cover 4 that transmits radio waves are combined to form a radio lens antenna.
- FIG. 2 shows a combination of a hemispherical Luneberg lens 5 and a reflector 6 for reflecting radio waves.
- This radio wave lens also consists of a primary radiator (not shown) and a holder that holds the radiator in a fixed position to form an antenna.
- the Luneberg lenses 1 and 5 in FIGS. 1 and 2 are obtained by mixing a polyolefin-based resin or Z or a derivative thereof with a high-dielectric-constant inorganic filler, which is preferred above, in a volume ratio of resin 9,9 to 50:
- a pre-expanded bead is made from a resin mixture mixed at a rate of 1 to 50, and a dielectric layer obtained by molding the pre-expanded bead (Fig. 1 is different from the two hemispherical nuclei 1a each).
- the hemispherical shell 1 b—, ⁇ 1 b- Struktur, Fig. 2 shows a hemispherical nucleus 5a and the hemispherical shell 5!
- f (A) force 0.0 0 0 0 5 ⁇ f (A) ⁇ 0.1. If the content of the filler is 50% by volume or more, the foam easily breaks, and it becomes difficult to form the foam at a desired expansion ratio.
- the production of the foamed dielectric is performed by a pease foam molding method.
- resin beads into which a foaming agent is injected are prepared, foamed to a predetermined magnification to form pre-foamed beads, and the pre-foamed beads are put into a mold and steam is introduced. And heat and foam. According to the steam heating, even in the molding of a thick mold, steam is introduced between the beads to uniformly heat each part, so that uniform foaming can be achieved.
- polyolefin resin such as polyethylene (PE), polypropylene (PP), and polystyrene (PS) may be used. This is because t an (5 is low and the resin can be bead foamed.
- any inorganic filler having a high dielectric constant may be used.
- titanium oxide (Ti 2 ), titanate, zirconate, or a mixture thereof is preferable because of its high relative dielectric constant.
- Ti 2 titanium oxide
- titanate zirconate
- a mixture thereof is preferable because of its high relative dielectric constant.
- Air may be used, but is not limited to this.
- a polyolefin-based resin and a high dielectric constant inorganic filler are kneaded at a predetermined ratio, and through a pelletizing step, pellets of a resin mixture in which the concentration (distribution density) of the high dielectric constant inorganic filler is substantially uniform are produced.
- the concentration of the high dielectric constant inorganic filler In order to carry out classification and sorting, the concentration of the high dielectric constant inorganic filler must be uniform, and within 0.5% of the designed concentration of soil, preferably 0.5% of soil.
- the mixing of the resin and the filler is performed using a twin-screw or single-screw extruder, a mixer, a mixer, a Banbury mixer, a mixer, or the like.
- the size of the pellet should be less than 1/4 of the wavelength of the radio wave used, preferably 1/1.
- steps 1) and 2) may be performed simultaneously.
- the simultaneous operation the polyolefin monomer, the polymerization catalyst and the filler are uniformly dispersed in the solvent, and the gas is sealed while the polymerization is performed.
- the prepared pre-expanded beads are classified and classified based on the specific gravity or the size Z weight to obtain beads having a target specific gravity and a specific gravity distribution.
- the specific method of this classification will be described later. '
- Molding process Fill the mold with the pre-foamed beads, pour heating steam into the mold, and foam-fuse it into the product shape with the molding machine.
- the foaming property of the beads may be adjusted using a pre-pressurizing device before molding.
- the prepared product is put in a drying room at 40-60 ° C and dried.
- the prefoamed beads (using air as a gas) having the specific gravity distribution shown in Fig. 4 were classified using a HE100 ⁇ Heavy sorter GA100.
- the classification conditions at this time were: vibration 30 times / min, air 251Z, gradient A 5.0 °, sample flow 9 kgZ, and classified into 8 types.
- Fig. 5 shows the specific gravity distribution of the beads classified in each lot.
- Sumitomo Chemical's PP is kneaded with Otsuka Chemical's Ca Ti ⁇ 3 using a twin screw extruder, and the resin mixture after kneading is almost uniformly pressed to a length of about 2 mm with a pelletizer. Was turned on.
- the weight ratio of polypropylene (PP) PPZC a T i : i in the resin-mixed pellets thus produced was 50/50, and the variation was within 0.3 wt%. .
- the resulting pellets were placed in a foaming kettle and prefoamed encapsulating a co 2.
- the pre-expanded beads thus obtained were classified according to size and specific gravity. Thereafter, a pre-press was applied to the prepared pre-expanded beads by a pre-pressing machine, and the beads were filled in a molding die, and steam was introduced into the die to perform foam molding.
- molds There are eight types of molds, and these molds have eight types of dielectric foams with different dielectric constants. Individually, a set of seven types of hemispherical shells) were fabricated and assembled into a spherical Luneberg lens with a diameter of 450 mm. Pre-expanded beads that had not been classified and used were used for the layer having a relative dielectric constant of 1.5 or less.
- Blend “Adjacent peaks” are adjusted by adjusting the ratio of the two selected pieces, which are closest to the target specific gravity, at the specified ratio: “Adjacent outside peak” is adjusted by 'renting' the heavy and light 2 sorting bee, which is the second closest, at a predetermined ratio.
- the homogeneity is high, and the required performance can be secured for multi-beam antenna applications where the gain, side lobe, and focal length do not change for radio waves from any direction.
- a lightweight lens can be provided.
Landscapes
- Aerials With Secondary Devices (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/548,405 US20060165971A1 (en) | 2003-03-11 | 2004-03-03 | Luneberg lens and process for producing the same |
CN2004800063166A CN1759505B (zh) | 2003-03-11 | 2004-03-03 | 椤勃透镜及其制造方法 |
EP04716778A EP1603191A4 (en) | 2003-03-11 | 2004-03-03 | LUNEBERG LENS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-065068 | 2003-03-11 | ||
JP2003065068 | 2003-03-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004086563A1 true WO2004086563A1 (ja) | 2004-10-07 |
WO2004086563A8 WO2004086563A8 (ja) | 2004-12-29 |
Family
ID=33094812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/002656 WO2004086563A1 (ja) | 2003-03-11 | 2004-03-03 | ルーネベルグレンズおよびその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060165971A1 (ja) |
EP (1) | EP1603191A4 (ja) |
CN (1) | CN1759505B (ja) |
WO (1) | WO2004086563A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006028300A1 (en) * | 2004-09-10 | 2006-03-16 | Jsp Corporation | Expanded polypropylene bead for forming a dielectric material and dielectric lens member formed by the expanded polypropylene beads |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2497328A (en) * | 2011-12-07 | 2013-06-12 | Canon Kk | Method of making a dielectric material with a varying permittivity |
EP3405995A4 (en) * | 2016-01-19 | 2019-08-21 | Commscope Technologies LLC | MULTIFUNCTIONAL LENS ANTENNAS CONSISTING OF LIGHTWEIGHT DIELECTRIC MATERIAL |
JP6835045B2 (ja) * | 2018-07-20 | 2021-02-24 | カシオ計算機株式会社 | 造形物及び造形物の製造方法 |
CN114270227B (zh) | 2019-04-11 | 2024-03-08 | 约翰梅扎林加瓜联合有限责任公司D/B/A Jma无线 | 由组装的模制部件形成的龙勃透镜 |
GB201911130D0 (en) * | 2019-08-05 | 2019-09-18 | Qinetiq Ltd | MAterials and methods |
GB201911134D0 (en) * | 2019-08-05 | 2019-09-18 | Qinetiq Ltd | Materials and method |
CN110689994B (zh) * | 2019-09-10 | 2020-10-30 | 佛山市粤海信通讯有限公司 | 电磁介质颗粒及电磁介质颗粒生产方法 |
CN111748125B (zh) * | 2020-07-03 | 2022-10-21 | 成都新光微波工程有限责任公司 | 一种改性聚氨酯泡沫及用其制备低密度龙伯透镜的方法 |
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JPH03179805A (ja) * | 1989-12-07 | 1991-08-05 | Murata Mfg Co Ltd | 誘電体レンズアンテナ用複合材料 |
JPH05334934A (ja) * | 1992-06-01 | 1993-12-17 | Murata Mfg Co Ltd | 誘電体の製造方法 |
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JPH0722834A (ja) * | 1993-06-30 | 1995-01-24 | Murata Mfg Co Ltd | アンテナ用誘電体レンズ及びその製造方法 |
JPH08167811A (ja) * | 1994-12-13 | 1996-06-25 | Murata Mfg Co Ltd | 誘電体レンズ及びその製造方法 |
JPH09130137A (ja) * | 1995-10-27 | 1997-05-16 | Murata Mfg Co Ltd | 誘電体レンズおよびその製造方法 |
JP2001229735A (ja) * | 2000-02-17 | 2001-08-24 | Achilles Corp | 複合誘電発泡体及びその製造方法 |
JP2001250423A (ja) * | 2000-03-03 | 2001-09-14 | Achilles Corp | 耐熱性誘電発泡体 |
JP2001279014A (ja) * | 2000-03-31 | 2001-10-10 | Achilles Corp | 改良された寸法安定性を有する誘電発泡成形品 |
JP2001316514A (ja) * | 2000-05-11 | 2001-11-16 | Achilles Corp | 複合誘電発泡体 |
JP2002121310A (ja) * | 2000-07-27 | 2002-04-23 | Otsuka Chem Co Ltd | 誘電性樹脂発泡体及びそれを用いた電波レンズ |
JP2002197923A (ja) * | 2000-10-18 | 2002-07-12 | Murata Mfg Co Ltd | 複合誘電体成形物、およびそれを用いたレンズアンテナ |
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US5267845A (en) * | 1992-05-13 | 1993-12-07 | Polysource, Inc. | Apparatus for manufacturing expandable polystyrene (EPS) pellets |
DE19619892A1 (de) * | 1995-12-09 | 1997-06-12 | Gefinex Gmbh | Verbundmaterial aus Kunststoff |
EP0963827B1 (en) * | 1998-06-11 | 2002-10-23 | Jsp Corporation | Molded article of foamed and expanded beads of propylene resin |
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2004
- 2004-03-03 WO PCT/JP2004/002656 patent/WO2004086563A1/ja active Application Filing
- 2004-03-03 US US10/548,405 patent/US20060165971A1/en not_active Abandoned
- 2004-03-03 CN CN2004800063166A patent/CN1759505B/zh not_active Expired - Fee Related
- 2004-03-03 EP EP04716778A patent/EP1603191A4/en not_active Withdrawn
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JPH03179805A (ja) * | 1989-12-07 | 1991-08-05 | Murata Mfg Co Ltd | 誘電体レンズアンテナ用複合材料 |
JPH05334934A (ja) * | 1992-06-01 | 1993-12-17 | Murata Mfg Co Ltd | 誘電体の製造方法 |
JPH066126A (ja) * | 1992-06-19 | 1994-01-14 | Murata Mfg Co Ltd | 厚肉樹脂レンズアンテナの製造方法 |
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JP2001229735A (ja) * | 2000-02-17 | 2001-08-24 | Achilles Corp | 複合誘電発泡体及びその製造方法 |
JP2001250423A (ja) * | 2000-03-03 | 2001-09-14 | Achilles Corp | 耐熱性誘電発泡体 |
JP2001279014A (ja) * | 2000-03-31 | 2001-10-10 | Achilles Corp | 改良された寸法安定性を有する誘電発泡成形品 |
JP2001316514A (ja) * | 2000-05-11 | 2001-11-16 | Achilles Corp | 複合誘電発泡体 |
JP2002121310A (ja) * | 2000-07-27 | 2002-04-23 | Otsuka Chem Co Ltd | 誘電性樹脂発泡体及びそれを用いた電波レンズ |
JP2002197923A (ja) * | 2000-10-18 | 2002-07-12 | Murata Mfg Co Ltd | 複合誘電体成形物、およびそれを用いたレンズアンテナ |
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WO2006028300A1 (en) * | 2004-09-10 | 2006-03-16 | Jsp Corporation | Expanded polypropylene bead for forming a dielectric material and dielectric lens member formed by the expanded polypropylene beads |
Also Published As
Publication number | Publication date |
---|---|
CN1759505B (zh) | 2010-05-26 |
EP1603191A4 (en) | 2007-01-03 |
EP1603191A1 (en) | 2005-12-07 |
WO2004086563A8 (ja) | 2004-12-29 |
CN1759505A (zh) | 2006-04-12 |
US20060165971A1 (en) | 2006-07-27 |
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