WO1997010624A1 - Materiau a autosyntonisation et son procede de fabrication - Google Patents
Materiau a autosyntonisation et son procede de fabrication Download PDFInfo
- Publication number
- WO1997010624A1 WO1997010624A1 PCT/JP1996/002594 JP9602594W WO9710624A1 WO 1997010624 A1 WO1997010624 A1 WO 1997010624A1 JP 9602594 W JP9602594 W JP 9602594W WO 9710624 A1 WO9710624 A1 WO 9710624A1
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- Prior art keywords
- self
- tuning
- tuning material
- chip
- metal chip
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0094—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with organic materials as the main non-metallic constituent, e.g. resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1103—Making porous workpieces or articles with particular physical characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1103—Making porous workpieces or articles with particular physical characteristics
- B22F3/1115—Making porous workpieces or articles with particular physical characteristics comprising complex forms, e.g. honeycombs
-
- 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
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
-
- 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
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- 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
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
Definitions
- Patent application title Self-tuning material and method for producing the same
- the present invention relates to a self-tuning material that has a small and simple structure and selectively emits or enters a specific radio wave and absorbs an unnecessary radio wave.
- the present invention relates to a plate-like self-tuning material used as a patch antenna or a director in a mobile or stationary communication device.
- Radio wave propagation characteristics differ depending on frequency. The distance becomes shorter, and in microphone mouthbands and millimeter-wave bands used for mobile communications, radio waves become difficult to reach in places shielded by buildings and mountains, and radio waves are attenuated by rain and fog. jar gradually in this case c, which will have properties similar to light, but can be easily alleviate the problem of radio waves are hard to reach if the radiation strong radio waves, this Yo I Do measures taking into account the adverse effects of radio waves on the human body Then, it cannot be adopted at all. Especially in general hospitals with a large number of high-performance electronic devices, malfunctions of medical devices due to radiated radio waves are a serious problem, and radiation from mobile communication devices There is absolutely out of the question be the strong radio waves
- TV signals use a frequency of 30 to 300 MHz, but with TVs for automobiles, the appearance of TV images becomes poor when traveling at the foot of mountains.
- the present invention is proposed to solve the above-mentioned problems relating to a mobile or stationary communication device mainly using a microphone mouthband and a millimeter waveband.
- An object of the present invention is to provide a self-tuning material and amplifies the radiation or incident only certain wave c
- Another object of the present invention is to provide a plate-shaped self-tuning material that radiates or enters only a specific radio wave more efficiently by connecting a resonance coil and widens.
- Another object of the present invention is to provide a small-sized self-tuning material applicable to a mobile communication device used for transmitting and receiving in the microwave and millimeter wave bands:
- Still another object of the present invention is to provide a self-tuning material applied to a stationary communication device used for transmission and reception in a microwave band and a millimeter wave band.
- Still another object of the present invention is to provide a method for efficiently producing a high-performance self-tuning material.
- Still another object of the present invention is to provide a method for manufacturing a self-tuning material while applying a high voltage and a high current so that the entire surface of the self-tuning material has uniform electric characteristics.
- a self-tuning material 1 includes a metal chip 2 containing two or more components that are closely connected by surface diffusion, and a metal chip connected to each other. It is a plate made of an organic or inorganic binder that maintains a continuous state. Metal chip 2 means single metal or alloy powder or cuttings (Dalai powder).
- the self-tuning material 1 is a simple continuum of the metal chip 2 as shown in FIG. 1, and even if both ends of the resonance coil 7 are connected to the self-tuning material 1 as shown in FIG.
- the sintered compact 8 may be used.
- Metal tip 2 is generally in the range of alloy composed of components 3 and 4, further a plurality of chips mixture derconnection of different components which may c self-tuning
- the resonance frequency of the material 1 shifts to a higher value as the particle size of the metal chip 2 becomes smaller. If the particle size of the chip is 10 to 30 mesh, the resonance frequency of the metal chip 2 becomes higher than the frequency of 300 to 300 MHz. Applied to communication equipment, and if the particle size is 30 to 40 mesh, applied to communication equipment with a frequency of 170 to 500 MHz.
- a small amount of the component 4 is preferably distributed in a layered, net-like, or acicular shape with respect to the component 3, and the components 3 and 4 need to have different charges.
- the metal tip 2 examples include hypereutectic aluminum alloy (Al—Si) alloy or carbon steel (Fe—C).
- One of the main components 3 is metal A 1 and F e, and the other component 4 includes C (carbon) and Si (silicon).
- the metal tip 2 may be an alloy of another metal, and may be composed of three or more components 3 and 4 containing iron (Fe), C, Si, Mn (manganese), etc., such as iron. Although alloys of different types can be used, alloys containing metals having high electric resistance are not preferred.
- As the metal chip 2 to be used it is also possible to apply a vapor deposition of another metal or an electric plating to a certain kind of metal chip, so that two or more kinds of metal are distributed in layers as a result. is there.
- the organic or inorganic binder for fusing each metal chip 2 is preferably an insulating material with high frequency and low power loss.
- the binder include thermosetting resins such as polyurethane resin, epoxy resin, Teflon resin, polyester resin, phenol resin, and diaryl phthalate resin, and ceramic powder such as cement powder and glass particles. Mix powders can be exemplified.
- a ceramic powder such as cement powder or glass particles as a binder and to form a porous sintered body.
- the manufacturing apparatus 10 for the self-tuning material 1 has a pair of electrode plates 12, 12 having the same surface area facing each other on a horizontal ceramic plate 11. Formwork 14 is formed. Referring to FIG. 5, a low-voltage transformer is provided on one side of the electrode plate 12.
- An electric wire 15 (not shown) is connected, and an electric wire 16 is connected to the opposite side end of the other electrode plate 12.
- the self-tuning material 1 is sufficiently porous when the organic or inorganic binder is less than about 10% by weight of the total amount. And the binder is 10 to 25 weight. If the value is / 0 , the self-tuning material 1 has small pores, so that the electrical conductivity and air permeability are reduced. Therefore, the content of the metal chip 2 is usually about 5% of the total weight. / 0 or more, preferably about 90 weight. /. It is.
- the thickness of the metal chip 2 and the bonding material before pressurization is preferably 4 to 70 mm.
- the press mold 17 is lowered, for example current 2 0 0 0-6 5 0 0 pressure 2 1 0 generally lower the press die 1 7 until amps kg ⁇ 3 4 0 t Z cm 2 at yo if Assure pressurized les.
- This pressurization is continued for a predetermined time, and when the current passing through the mold 14 becomes substantially constant, the molded body is taken out.
- the obtained self-tuning material 1 is cut according to the application, it is generally preferable to cut it into thin pieces for mobile phones, and to cut it into larger dimensions when it is used for low-frequency transceivers such as TVs.
- the heating temperature is low unless a sintered body as shown in Fig. 3 is used. Generally, heating to 80 to 150 ° C is sufficient, and the supply current is also relatively small. It may be relatively low.
- the reason for applying a high current during the pressurization is to apply a current at each contact point of the metal chip 2 to break the resin coating which is the binder. The quality of the product.
- the self-tuning material 1 increases the bonding between the chips 2 based on the surface diffusion of each metal chip 2 by heating under high pressure, and a large number of It has small pores 6.
- the Si of the other component 4 enters the band shape into the matrix of the A 1 of the one component 3, and the A 1 And Si have a layered bonding structure, and the molten bonding material enters between a large number of contacting chips to form a resin bonding layer 5 having a large number of small pores 6 as a whole.
- the self-tuning body 1 When the electric action in the self-tuning body 1 is estimated, the self-tuning body 1 has a net-like structure in which the metal chips 2 are densely connected to each other. Generates a small current. This small current flows as it is between the chip components 3, 3 or 4, 4 and spreads throughout the tuning body 1 while generating an electromotive force between the components 3, 4 with different charges: The entire self-tuning body 1 In this case, the electromotive force is added due to the extremely large number of components between the chip components 3 and 4, and a considerably large current is generated as a whole. In the self-tuning device 1, the metal chips 2 are closely connected to each other.
- Self-tuning body 1 selectively amplifies at a specific frequency in a resonable high frequency band, Absorbing other weak frequencies, this effect is more effective when the resonant coil 7 is connected to the self-tuning body 1—
- the tuning body 1 When the self-tuning body 1 is used as a director of a mobile phone, the tuning body is cut into, for example, 14 ⁇ 24 ⁇ 24 mm thick and the digital mobile phone 3 is cut as shown in FIG. It may be bonded near the 0 antenna 31.
- the metal chip 2 in the self-tuning body 1 has a large number of linear distances in which a minute current flows, so that A large number of short lengths are formed to amplify radio waves.
- Si of the other metal 4 exists in a layer and has a large number. In the small pores 6, air with a low dielectric constant exists discontinuously.
- the tuning body 1 when used as a patch antenna for an automobile television, the tuning body is cut into, for example, 10 ⁇ 30 ⁇ 50 mm, and the connector is connected to the buried metal chip 2.
- the self-tuning body 1 (not shown) may be fixed inside the automobile, above the front glass, etc., and the power supply line from the TV is connected to the connector. If the antenna function of the self-tuning body 1 is estimated, a large number of metal chips 2 are connected very finely inside the tuning body 1 so that the electrical connections spread almost evenly on a plane. Has the function of a broadband antenna.
- FIG. 1 is an enlarged schematic cross-sectional view showing an example of a plate-like self-tuning material according to the present invention, in which a metal chip is shown coarser and larger than it actually is.
- FIG. 2 is an enlarged schematic cross-sectional view showing a modification in which the resonance coil is connected to a plate-like self-tuning material.
- FIG. 3 is a schematic cross-sectional view showing, in an enlarged manner, a modification in which the self-tuning material is a porous sintered body.
- FIG. 4 is a schematic sectional view showing an apparatus used for producing the self-tuning material of FIG. You.
- FIG. 5 is a schematic plan view of the device of FIG.
- FIG. 6 is a schematic perspective view showing an example of use of the self-tuning material of FIG.
- Fig. 7 shows an experimental example using the self-tuning material manufactured in Example 1
- Fig. 7a is a graph when the self-tuning material is stuck on a mobile phone
- Fig. 7b is the graph when the self-tuning material is stuck. It is a graph when not wearing.
- the metal chip 2 contains 95.5% by weight of cutting chips (Dalai powder) of hypereutectic A 1 —Si alloy containing 12% Si and having a particle size of 10 to 30 mesh. And 0.5% by weight of iron powder, and 4% by weight of a liquid epoxy resin as a binder are added to obtain a viscous mixture.
- cutting chips Diai powder
- hypereutectic A 1 —Si alloy containing 12% Si and having a particle size of 10 to 30 mesh 0.5% by weight of iron powder, and 4% by weight of a liquid epoxy resin as a binder are added to obtain a viscous mixture.
- a pair of rectangular electrode plates 12 and 12 having the same surface area are opposed to each other on a horizontal heat-resistant ceramic plate 11 and are orthogonal to the horizontal.
- a wire 15 from a low-voltage transformer (not shown) is connected to a side end of one electrode plate 12, and a wire is connected to the opposite side end of the other electrode plate 12. Connecting.
- a thermocouple is inserted in the horizontal ceramic plate 11 so that the temperature in the mold 14 can be measured.
- news paper 20 weighing 150 g is laid flat on the bottom of the mold 14 and the viscous mixture is placed on it to a thickness of 4 mm.
- the obtained molded plate is cut into a length of 14 ⁇ 24 and a thickness of 4 mm, and a self-tuning body having a length of 15 ⁇ 25 and a thickness of 5 mm including urethane coating is manufactured.
- this self-tuning body is used as a waveguide for a mobile phone, as shown in FIG. 6, the self-tuning body can be vertically adhered with a double-sided adhesive tape in the immediate vicinity of the antenna 31 of the digital mobile phone 30.
- affixed to a 1.5 GHz digital mobile phone 30 it is possible to talk without loss of voice quality even when entering Fukui Prefecture from Osaka Prefecture, which is normal in factories and automobiles where there are many noisy radio waves. You can talk in the same way.
- Example 2 use the hypereutectic A1-Si alloy cutting chips used in Example 1 and mix it with powdered polyurethane resin (content: 10%) as the binder. To give 800 g of the mixture.
- newsprint paper 20 is laid flat on the bottom surface of the mold 14, and 800 g of the above-mentioned mixture is put thereon, and the surface is evened. Further, lay a flat sheet of Shinmin 20 on the surface. Next, the ceramic press die 17 is lowered and the power is turned on at the same time as the press die 17 until the current reaches approximately 600 amperes.
- the obtained sintered molded plate is cut into a size of 10 x 30 x 50 mm, and a connector (not shown) is attached to use as a patch antenna for an automobile television.
- This self-tuning body is fixed above the windshield inside the vehicle, and the power supply line from the television is connected to the connector.
- the TV picture is good even when traveling on the foot of a mountain or entering a short tunnel, and the picture in the TV picture hardly changes even if the traveling direction of the car changes.
- UHF which has a shorter wavelength than VHF channels, has better TV image quality.
- the self-tuning body 1 cut to 4.5 x 10 x 25 mm is effective even if it is attached to a small current cordless telephone of Anaguchi, which usually has a reach of about 100 m.
- the porous sintered body can be bonded to the master unit and the slave unit respectively.
- this cordless telephone it is possible to talk even at a distance of about 300 m in a straight line in the experiment, You can talk even if you enter the REIT building.
- a similar extension of the radio wave reach is also possible with a simple mobile phone PHS, which is a digital cordless phone.
- the sintered molded plate obtained in Example 2 was cut into 4.5 ⁇ 10 ⁇ 25 mm, and as shown in FIG. 2, both ends of the coil 7 resonating at 700 to 900 MHz were connected. . With coil 7, the output radio waves from the self-tuning material are further amplified, and other weak frequencies are more effectively absorbed.
- this self-tuning material is used as a wave radiating director for a mobile phone, as shown in Fig. 6, it is bonded vertically with double-sided adhesive tape in the immediate vicinity of the antenna 31 of the digital mobile phone 30. I do.
- This self-tuning body is more effective when adopted by a telephone manufacturer and mounted inside the telephone.
- iron In order to manufacture another porous sintered body, iron (FC-25, including Weight: about 3.5% of C, about 2.5% of Si, about 0.5% of Mn), 17 kg of cutting chips (Dalai powder), and use this as 1 kg of powdered epoxy resin as binder And can be mixed.
- This mixture may be treated in the same manner as in Example 2 below. However, stopping the current when the temperature of the mold 1 in 4 in after pressing of 1-2 minutes to reach equilibrium, pressurized to molding plate at a pressure 3 4 0 kg Z cm 2 has a predetermined thickness, the press after this Lift the mold 17 and take out the sintered plate.
- the obtained sintered molded plate may be taken out of the mold 14 and then cooled in the air, and is heat resistant and porous and light.
- a metal chip use steel cuttings (carbon content: 2.5 to 4.5%) instead of iron chips, or glass with an average diameter of 1 mm instead of epoxy resin as a binder It is also possible to use granules or ceramic powder.
- the mobile phone with the self-tuning material attached has a frequency peak value of 49.90 dBuV, which is clearer than the frequency peak value of only the mobile phone 43.80 dBuV. It is excellent.
- the radiation frequency is constant and the radio wave condition is stable, whereas in the case of mobile phones alone, radiation of an approximate frequency is generated. The state of the radio wave is unstable.
- this self-tuning material has an effect of absorbing unnecessary radio waves in a high frequency band.
- this self-tuning material has the effect of reducing the leakage of radio waves in the high frequency band and increasing the output radio waves.
- the self-tuning material of the present invention even if its structure is simple and small in size, forms a resonant circuit for a specific radio wave and selectively amplifies it, thereby enabling communication in the microphone mouthband and millimeter band. It can be used as a patch antenna or director in a transceiver.
- This self-tuning material Since it is a very small board, it can be installed in a mobile communication device and does not hinder the carrying of the device, and the installation location as a patch antenna can be small. In addition, this self-tuning material does not need to change the installation angle as an antenna when driving a car, even if the radiation or incident direction of radio waves is not always uniform in the microwave band or millimeter wave band. It is convenient.
- the self-tuning material of the present invention When the self-tuning material of the present invention is attached to a mobile communication device, it is possible to make a call without extending the antenna at the time of transmission / reception without strengthening the radiated radio wave.
- the self-tuning material connected to the resonant coil further amplifies the specific radio wave and enables the communication of weak radio waves, thereby expanding the bandwidth that can be used by the same number of base stations. Become. Since this self-tuning material is not related to the increase in the amount of radiated radio waves in the communication equipment, it is not necessary to consider the effect of radio waves on the human body.
- the self-tuning material of the present invention selectively amplifies a specific frequency at high frequencies in the microwave band and the millimeter band, and absorbs radio waves other than the specific frequency, thereby stabilizing the radio wave condition.
- self-tuning materials of this nature unnecessary radio waves are not radiated or radiated, making them less susceptible to the effects of ambient noise and enabling calls in factories and automobiles with a lot of noisy radio waves.
- the manufacturing method of the present invention can adjust the physical properties and porosity of the self-tuning material by adjusting the quality and shape of the metal chip and the binder, the mixing ratio of the metal chip and the binder, or the heating and pressurizing temperatures. It is possible to produce a self-tuning material suitable for the frequency of By applying this manufacturing method, a simple continuous body of relatively low-strength metal chips or a self-tuning material that is a porous sintered body with high mechanical strength can be arbitrarily manufactured. The amount may be increased to make the self-tuning material deformable. Therefore, it is preferable to use a simple continuum of metal chips where mechanical strength is not required, and to use a porous sintered body in harsh environments such as high temperature and high humidity.
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Details Of Aerials (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Waveguide Aerials (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/029,113 US6031509A (en) | 1995-09-13 | 1996-09-11 | Self-tuning material for selectively amplifying a particular radio wave |
AU69441/96A AU706171B2 (en) | 1995-09-13 | 1996-09-11 | Self-tuning material and method of manufacturing the same |
EP96930363A EP0852408A4 (en) | 1995-09-13 | 1996-09-11 | SELF-TUNING MATERIAL AND MANUFACTURING METHOD THEREOF |
NZ318070A NZ318070A (en) | 1995-09-13 | 1996-09-11 | Self-tuning material and method for manufacturing |
CA002218693A CA2218693C (en) | 1995-09-13 | 1996-09-11 | Self-tuning material and method of manufacturing the same |
BR9610087A BR9610087A (pt) | 1995-09-13 | 1996-09-11 | Material auto-sintonizante em uma configuração de placa e processo para a fabricação do mesmo |
NO975836A NO975836L (no) | 1995-09-13 | 1997-12-11 | Selvavstemmende materiale og fremgangsmåte for fremstilling av samme |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26226995 | 1995-09-13 | ||
JP7/262269 | 1995-09-13 | ||
SG9700713A SG91243A1 (en) | 1995-09-13 | 1997-03-12 | Self tuning material and method for manufacturing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997010624A1 true WO1997010624A1 (fr) | 1997-03-20 |
Family
ID=28043560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/002594 WO1997010624A1 (fr) | 1995-09-13 | 1996-09-11 | Materiau a autosyntonisation et son procede de fabrication |
Country Status (11)
Country | Link |
---|---|
US (2) | US6031509A (ja) |
EP (1) | EP0852408A4 (ja) |
JP (1) | JP2848540B2 (ja) |
CN (1) | CN1114243C (ja) |
AU (1) | AU706171B2 (ja) |
BR (1) | BR9610087A (ja) |
CA (1) | CA2218693C (ja) |
NO (1) | NO975836L (ja) |
NZ (1) | NZ318070A (ja) |
SG (1) | SG91243A1 (ja) |
WO (1) | WO1997010624A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60017352T2 (de) * | 1999-07-05 | 2006-03-02 | Suitaya Co., Ltd. | Verfahren zur Bildung einer porösen Struktur |
JP2001060790A (ja) * | 1999-08-19 | 2001-03-06 | Sony Corp | 電波吸収体 |
EP1146591A2 (en) * | 2000-04-10 | 2001-10-17 | Hitachi, Ltd. | Electromagnetic wave absorber, method of manufacturing the same and appliance using the same |
US7679577B2 (en) | 2006-06-09 | 2010-03-16 | Sony Ericsson Mobile Communications Ab | Use of AMC materials in relation to antennas of a portable communication device |
DE102014226370A1 (de) * | 2014-12-18 | 2016-06-23 | Siemens Aktiengesellschaft | Verfahren zur generativen Fertigung eines Werkstücksaus einem Rohmaterial |
CN107138730B (zh) * | 2017-04-23 | 2019-10-25 | 扬州市康乐机械有限公司 | 一种制造固定重量哑铃片的方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54132410A (en) * | 1978-04-07 | 1979-10-15 | Inoue Japax Res Inc | Manufacture of high density sintered metal |
JPH05275920A (ja) * | 1992-03-27 | 1993-10-22 | Toshiba Corp | 鏡面修正アンテナ |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2840820A (en) * | 1954-04-14 | 1958-06-24 | Bell Telephone Labor Inc | Artificial medium of variable dielectric constant |
US3789404A (en) * | 1968-10-16 | 1974-01-29 | Univ Ohio State Res Found | Periodic surface for large scan angles |
US3798404A (en) * | 1972-12-21 | 1974-03-19 | Gen Electric | Electronic oven with mode exciter |
US4216423A (en) * | 1977-11-21 | 1980-08-05 | Mb Associates | Apparatus and method for enhancing electrical conductivity of conductive composites and products thereof |
US4243460A (en) * | 1978-08-15 | 1981-01-06 | Lundy Electronics & Systems, Inc. | Conductive laminate and method of producing the same |
US4378322A (en) * | 1980-06-05 | 1983-03-29 | Transmet Corporation | Electromagnetic radiation shielding composites and method of production thereof |
US4379098A (en) * | 1980-07-17 | 1983-04-05 | Transmet Corporation | Electromagnetic radiation shielding composites and method of production thereof |
US4467330A (en) * | 1981-12-28 | 1984-08-21 | Radant Systems, Inc. | Dielectric structures for radomes |
US4734140A (en) * | 1985-08-06 | 1988-03-29 | Chomerics, Inc. | Heat treatment of electromagnetic shielding composition |
US5147718A (en) * | 1990-04-24 | 1992-09-15 | Isp Investments Inc. | Radar absorber |
US5366691A (en) * | 1990-10-31 | 1994-11-22 | Sumitomo Electric Industries, Ltd. | Hyper-eutectic aluminum-silicon alloy powder and method of preparing the same |
US5789064A (en) * | 1992-02-28 | 1998-08-04 | Valente; Thomas J. | Electromagnetic radiation absorbing and shielding compositions |
US5400043A (en) * | 1992-12-11 | 1995-03-21 | Martin Marietta Corporation | Absorptive/transmissive radome |
-
1996
- 1996-09-11 JP JP9510133A patent/JP2848540B2/ja not_active Expired - Lifetime
- 1996-09-11 EP EP96930363A patent/EP0852408A4/en not_active Withdrawn
- 1996-09-11 US US09/029,113 patent/US6031509A/en not_active Expired - Fee Related
- 1996-09-11 WO PCT/JP1996/002594 patent/WO1997010624A1/ja not_active Application Discontinuation
- 1996-09-11 CA CA002218693A patent/CA2218693C/en not_active Expired - Fee Related
- 1996-09-11 NZ NZ318070A patent/NZ318070A/xx unknown
- 1996-09-11 CN CN96195269A patent/CN1114243C/zh not_active Expired - Fee Related
- 1996-09-11 AU AU69441/96A patent/AU706171B2/en not_active Ceased
- 1996-09-11 BR BR9610087A patent/BR9610087A/pt unknown
-
1997
- 1997-03-12 SG SG9700713A patent/SG91243A1/en unknown
- 1997-12-11 NO NO975836A patent/NO975836L/no unknown
-
1999
- 1999-07-06 US US09/348,587 patent/US6287505B1/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54132410A (en) * | 1978-04-07 | 1979-10-15 | Inoue Japax Res Inc | Manufacture of high density sintered metal |
JPH05275920A (ja) * | 1992-03-27 | 1993-10-22 | Toshiba Corp | 鏡面修正アンテナ |
Non-Patent Citations (1)
Title |
---|
See also references of EP0852408A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP2848540B2 (ja) | 1999-01-20 |
BR9610087A (pt) | 1999-01-05 |
AU6944196A (en) | 1997-04-01 |
NO975836D0 (no) | 1997-12-11 |
CN1214804A (zh) | 1999-04-21 |
US6031509A (en) | 2000-02-29 |
EP0852408A4 (en) | 1998-12-09 |
SG91243A1 (en) | 2002-09-17 |
US6287505B1 (en) | 2001-09-11 |
CA2218693A1 (en) | 1997-03-20 |
CA2218693C (en) | 2000-10-10 |
EP0852408A1 (en) | 1998-07-08 |
NZ318070A (en) | 1999-08-30 |
CN1114243C (zh) | 2003-07-09 |
AU706171B2 (en) | 1999-06-10 |
NO975836L (no) | 1998-02-02 |
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