Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Polymerizing – cross-linking – or curing
Reexamination Certificate
1999-07-06
2001-09-11
Turner, Archene (Department: 1775)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Polymerizing, cross-linking, or curing
C264S427000, C264S429000, C264S435000, C264S437000, C264S438000, C264S439000, C264S460000, C264S464000, C264S465000, C264S466000, C264S469000, C264S470000, C264S472000, C264S484000, C264S486000, C264S487000
Reexamination Certificate
active
06287505
ABSTRACT:
TECHNICAL FIELD
The present invention relates to self-tuning materials in a plate-shaped configuration, which are small in their dimension and simple in their construction, selectively emit or receive particular radio waves only and absorb any unnecessary radio waves. The self-tuning materials are used in the form of patch antenna, wave directors or the like in mobile or stationary type radio or wireless communication devices for the use of a microwave or millimetric wave band.
TECHNICAL BACKGROUND
The mobile type radio or wireless communication devices such as automotive telephones, portable wireless telephones or the like are coming into wide use, because they allow communication to be feasible regardless of time and place. The propagational characteristics of radio waves differ according to their frequencies, and the radio waves attenuate in their propagational energy, and decrease in their reaches as their frequencies are elevated. Therefore, the radio waves are difficult to propagate in areas or places blocked by buildings or mountains when the radio waves belong to the microwave or the millimetric wave band which is applied in the field of the mobile radio or wireless communication. Moreover, in the microwave or the millimetric wave band, the radio waves are damped in their propagational energy owing to rain, fog or mist, and this denotes that radio waves of high frequencies in the microwave or the millimetric wave band come to approach light in their properties.
In this case, the foregoing trouble in which the radio waves are difficult to propagate can easily be mitigated if the radio waves are strengthened in their propagational energy to emit them. However, this countermeasure can by no means be accepted if an evil effect of the radio waves upon the human bodies is allowed for. Particularly, in polyclinics which are equipped with a great number of electronic medical systems, the radio waves emitted cause the electronic medical systems to malfunction, and this is a subject of public discussion.
Therefore, it is completely out of the question to strengthen the propagational energy of the radio waves to be emitted from the mobile type radio or wireless communication devices.
In Japan, many of the mobile type radio or wireless communication devices use radio waves of 100 MHz or more in their frequencies, and for example, the automotive digital wireless telephones or the portable wireless telephones employ radio waves chiefly of 1.5 GHz rather than 800 MHz in their frequencies. Also, in a simpler portable digital wireless telephone called PHS in Japan which stand for Personal Handy Phone System, a radio wave of 1.9 GHz in the frequency thereof is applied.
The digital type radio or wireless communication is wider in the occupied band width of frequency thereof than the analogue type radio or wireless communication, and it is difficult to take many communicating channels for the digital type radio or wireless communication. However, as compared with the analogue type communication in which the communicating quality suddenly deteriorates as the radio wave under reception becomes faint, the digital type communication less deteriorates in the communicating quality to some level of field intensity of the radio wave.
Generally, in the digital type portable radio or wireless telephones for which a radio wave of 1.5 GHz in the frequency thereof is used, the communicating unit area comprises small zones of 5 km to 10 km in radius, and a base station is required to be located every three zones in their intersecting points. For example, when the digital type portable radio or wireless telephones which are operated in the district of Osaka Prefecture are brought into that of Fukui Prefecture in Japan, such telephones deteriorate in their communicating performance, and become finally incapable of their communicating operation, because these two districts are different service areas of the telephone company.
Also, the digital type portable wireless telephones can readily be affected by surrounding noises, and within manufacturing factories and automobiles in which there are a great deal of noises, it becomes frequently difficult to allow the communicating operation of the digital type portable radio or wireless telephones.
Moreover, the television uses radio waves of 30 to 3000 MHz in their frequencies for the electric signals thereof, and the automotive television deteriorates in its reception of the radio waves when, for example, it is moved along the skirts of mountains.
The present invention is submitted to improve the foregoing disadvantages of the mobile or stationary type radio or wireless communication devices which use a microwave band or a millimetric wave band.
OBJECTS OF THE INVENTION
It is an object of the present invention to provide a self-tuning material with densely coupled metallic chips which creates a resonance circuit upon the introduction of a radio wave.
It is another object to provide a self-tuning material of metallic chips coupled to one another and a coil connected thereto.
It is a still further object of the present invention to provide a method for manufacturing a self-tuning circuit including mixing metallic chips with a bonding material, applying a predetermined pressure to the resultant mixture, heat molding the resultant mixture, and applying an electric current through the resultant mixture in a direction orthogonal to the application of the pressure.
An object of the present invention is to provide for a self-tuning material which only amplifies a particular radio wave before it is emitted or after it is received.
Another object of the present invention is to provide for a self-tuning material in a plate-shaped configuration which achieves more efficient amplification of a particular radio wave alone before it is emitted or after it is received by connecting a resonance coil thereto.
Still another object of the present invention is to provide for a small-sized self-tuning material which is applied to mobile radio or wireless communication devices used for emission or reception of radio waves in a microwave band or a millimetric wave band.
Still another object of the present invention is to provide for an efficient method for manufacturing self-tuning materials of high performance.
Yet another object of the present invention is to provide for a method for manufacturing self-tuning materials while a high electric current of high voltage is applied to them so that they are furnished with even or identical electric characteristics on their whole surfaces.
Briefly stated, A self-tuning material has metallic chips of two or more ingredients distributed in a layered, net-like or needle-shaped configuration. A bonding material which has the property of having a small dissipation of electric power under radio waves of high frequencies is mixed with the metallic chips. The final mixture is pressurized and highly electrified in directions orthogonal to one another.
These and other objects, characters and advantages of the present invention will be more apparent to those engaged in the art from the following description.
DISCLOSURE OF INVENTION
As illustrated in
FIG. 1
of the accompanying drawings, a self-tuning material of the present invention is a material in a plate-shaped configuration, comprising metallic chips
2
which are densely coupled with one another under the effect of surface diffusion, and respectively contain two or more kinds of ingredients, and organic or inorganic bonding materials which keep the metallic chips
2
joined to one another. The metallic chips denote granular bodies or shavings of metal of a single element or of an alloy, or the like. In
FIG. 1
, the self-tuning material
1
is a simple continuous body of the metallic chips
2
, and this self-tuning material may have both ends of a resonance coil
7
connected thereto as shown in FIG.
2
. Alternatively, the self-tuning material may be a porous sintered body
8
.
The resonance frequency of the self-tuning material
1
becomes still higher when the metallic chips
2
in the form
Morrison Law Firm
Suisaku Limited
Turner Archene
LandOfFree
Self-tuning material and method for manufacturing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-tuning material and method for manufacturing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-tuning material and method for manufacturing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2541174