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公开(公告)号：JPH07202557A
公开(公告)日：1995-08-04
申请号：JP33671993
申请日：1993-12-28
Applicant: TOSHIBA CORP
Inventor： SAWADA HISASHI , IWASAKI HISAO
Abstract: PURPOSE:To miniaturize a motor, to reduce the thickness of the whole of an antenna equipment, to reduce the power consumption, to improve the reliablity, and to reduce the cost by rotating and driving an upper conductor to a lower conductor to sufficiently drive the antenna with the motor of small torque and eliminating a need of rotary joints. CONSTITUTION:Different diameters are given to cylinders of an upper conductor 11 of a radial waveguide and a lower conductor 13 of a radial waveguide, and the cylinder part or the lower conductor 13 is inserted into that of the upper conductor 11. The peripheral wall part on the side face of the upper conductor 11 is provided with a recessed part 23, and that of the lower conductor 13 is provided with a projecting part 25, and the projecting part 25 is engaged with the recessed part 23 to freely rotatably connect the upper conductor 11 and the lower conductor 13, and a resonance cavity is formed inside. A motor 19 and the lower conductor 13 are fixed by a fixing plate 9, and a revolving shaft 7 of the motor 19 is fixed to a roll 5, and the roll is engaged with the side face of the upper conductor 11 to rotate the upper conductor 11.
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公开(公告)号：JPH05114818A
公开(公告)日：1993-05-07
申请号：JP30913591
申请日：1991-11-25
Applicant: TOSHIBA CORP
Inventor： IWASAKI HISAO , SAWADA HISASHI
IPC: H01Q21/24
Abstract: PURPOSE:To obtain the array antenna which can reduce the loss of a feed line by providing a circuit which feeds electricity to respective antenna elements from a nearly center part of the area surrounded with the antenna elements. CONSTITUTION:A microstrip feed line 4 for transmission and a microstrip feed line 5 for reception are provided on the top surface of a dielectric substrate 3, slots 6 is formed in the center parts of circular patches 2 made of conductor plates on the top surface of a dielectric substrate 1 while crossing orthogonally to the microstrip feed line 5 for reception, and the dielectric substrate 1 and dielectric substrate 3 are united so that the top surface of the dielectric substrate 3 contacts the reverse surface of the dielectric substrate 1. A feed circuit 100 for reception which consists of the microstrip feed line 4, a 90 distributor 7a, etc., is arranged inside four circular patches 2 as the antenna elements and a feed circuit 200 for transmission which consists of a microstrip feed line 5, a 90 distributor 7b, etc., is arranged outside the four circular patches.
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公开(公告)号：JPH04206694A
公开(公告)日：1992-07-28
申请号：JP33561490
申请日：1990-11-30
Applicant: TOSHIBA CORP
Inventor： SAWADA HISASHI
Abstract: PURPOSE:To make it possible to manufacture a multilayer board by applying an easily removable solvent to the inner surface of a hole which calls for no plating and an electroless plating solution thereto and then removing both the solvent and the non-electrolytic plating solution and then further applying electrolytic plating to the surface on which the non-electrolytic plating still remains. CONSTITUTION:The inner surface of a hole 14 which calls for no plating is coated with an etching resist film formation agent 15. Then, a non-electrolytic plating solution is injected into the hole 14, thereby forming non-electrolytic plating. After the formation of plating, the resist film formation agent 15 in the hole 14 and the non-electrolytic plating formed on the surface are separated and removed by an aqueous solution, such as HCl. Electrolytic plating is applied to the non-electrolytic plating where a thick plating layer 16 is formed, thereby forming through holes 1724 and 1746 which connect a central conductor 132 with a central conductor 134 and a central conductor 134 with a central conductor 136 respectively.
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公开(公告)号：JPH04170803A
公开(公告)日：1992-06-18
申请号：JP29723490
申请日：1990-11-05
Applicant: TOSHIBA CORP
Inventor： KAWABATA KAZUAKI , SAWADA HISASHI
Abstract: PURPOSE:To easily match a feeder line and a radiation element with each other while simplifying constitution, and to reduce undesired radiation from the feeder line, and to obtain a desired directional characteristics by forming the radiation element and the feeder line and a grounding conductor respectively on the different surfaces of a dielectric base board. CONSTITUTION:Four pieces of the radiation elements 1, 10 to 12 are formed of the conductor of copper, etc., on the upper surface of the dielectric base board 2. The conductor of copper, etc., is formed all over the lower surface of this dielectric base board 2, and after that, an insulation part 14 is formed by dissolving the conductor in order to insulate the part of a central conductor 3 and the grounding conductor 4 from each other. The central conductors 3 are formed on the upper and the lower surfaces through the radiation elements 1, 10 to 12 and the dielectric base board 2, and both the central conductors are constituted so that they can be coupled with other parts. Thus, the matching between the radiation element and the feeder line, the reduction of the undesired radiation from the central conductor and the reduction of the distortion of the directivity, the wide band and the high gain of the radiation element can be easily attained.
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公开(公告)号：JPS61147603A
公开(公告)日：1986-07-05
申请号：JP26839284
申请日：1984-12-21
Applicant: TOSHIBA CORP
Inventor： SAWADA HISASHI , HIDAKA KAZUTAKA
Abstract: PURPOSE:To adjust the horizontal directivity and the vertical directivity of the combined directivity by arranging >=2 parabolic antennas so that one beam width of the horizontal directivity and vertical directivity of the combined directivity of the parabolic antenna is kept broad and the other is kept sharp. CONSTITUTION:Two parabolic antennas of this equipment are arranged horizontally. Further, the beam width of the vertical directivity is made broad and the beam width of the horizontal directivity is made sharp in the directivity of the this equipment and the direction is adjusted easily by using a phase adjuster 13. First, a reflection mirror 6 is adjusted by an elevating angle adjuster 9 to allow an elevating angle detection meter 11 to point out a designated elevating angle. Then an azimuth angle to a satellite is confirmed by using an azimuth magnetic needle, an azimuth angle adjuster 10 is used to direct the mirror 6 toward the satellite and the azimuth angle is adjusted to maximize the reception output. In varying the phase amount between the parabolic antenna 15 and a synthesizer 14, the beam of the horizontal directivity of the combined directivity is moved. The phase adjusting device 13 is changed by utilizing it to adjust minutely the azimuth angle to maximize the reception output.
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Patent Agency Ranking
公开(公告)号：JPH05335811A
公开(公告)日：1993-12-17
申请号：JP17193
申请日：1993-01-05
Applicant: TOSHIBA CORP
Inventor： KAWABATA KAZUAKI , SAWADA HISASHI
Abstract: PURPOSE:To enhance the RF/DC conversion efficiency by selecting a distance from a rectifier means till a harmonic interruption means to be nearly an odd number of multiple of a 1/4 wavelength at the cut-off frequency. CONSTITUTION:The rectenna is provided with an input terminal TIN an input filter section FIN, a rectifier means 1, an output filter section FOUT, an output terminal TOUT, and open stubs 111-117 to interrupt 2nd-5th harmonics. Then a distance (line length) between the rectifier means 1 and the open stub to interrupt an n-th harmonic is selected to be an odd number of multiple of a 1/4 wavelength lambdag of the n-th harmonic. The open stub 131 whose length is 1/4 wavelength of a fundamental wave is short-circuited with respect to the fundamental wave whose fundamental frequency is f0 and open to its DC component. The open stub 133 whose length is 1/8 wavelength of the fundamental wave is short-circuited with respect to the 2nd harmonic wave whose frequency is 2f0, and the open stub 135 whose length is 1/16 wavelength of the fundamental wave is short-circuited with respect to the 4th harmonic wave whose frequency is 4f0. As a result, not only the fundamental wave but also its harmonic components are power-converted.
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公开(公告)号：JPH0355904A
公开(公告)日：1991-03-11
申请号：JP19053089
申请日：1989-07-25
Applicant: TOSHIBA CORP
Inventor： SAWADA HISASHI , KAWABATA KAZUAKI
Abstract: PURPOSE:To attain higher degree of freedom in the wiring design of a feeder line and to reduce the loss of the feeding line by using two inductive supports and two conductive supports so as to form a radiation element part and a feeding part separately. CONSTITUTION:On the upper face of a plane antenna 5, plural radiation elements, that is, 16 circular patches 1 made of a conductor in this case are formed on a board or the like made of a dielectric material or the like. As shown in figure, a feeding line 2 is formed on the same board to connect two each of the circular patches 1. Moreover, a slot 3 feeding a feeding line 2 is formed on other board. Furthermore, other conductor 4 is formed other board to be coupled electromagnetically with the slot 3. The boards 7, 9, 10 form tri-plate structure and the conductors 8, 11 are of the same potential, then the radiation loss attending the feeding of the conductor line 4 is suppressed.
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公开(公告)号：JPH02168703A
公开(公告)日：1990-06-28
申请号：JP27294988
申请日：1988-10-31
Applicant: TOSHIBA CORP
Inventor： SAWADA HISASHI , KAWABATA KAZUAKI , MOROOKA TASUKU
Abstract: PURPOSE:To prevent unnecessary radiation due to a feeder line and to prevent a radiation loss by forming a exciting element and the feeder line on the same substrate, making it into a triplate constitution, easily obtaining impedance matching, and making approximately the same the aperture of a plane antenna and the exciting element. CONSTITUTION:A conductive plate 1 where the square aperture part is provided and a ground conductive plate 5 constitute a triplate external conductor, and they are at the same potential. A film 4 is set at the center between the conductive plate 1 and the ground conductive plate 5, and on the film 4, a feeder line 2 and a square exciting element 3 are formed by etching, etc. Further, the exciting element 3 is tuned to the aperture part. In addition, the exciting element 3 and the aperture part have approximately the same size. That is, one side of the exciting elements is (0.35 to 0.53)lambda0, and one side of the aperture part is (0.41 to 0.57)lambda0. The lambda0 is a free space wavelength with respect to central frequencies. By making approximately the same the sizes of the aperture part and the exciting element, the rate of the feeder line to be external exposed through the aperture part is made minimal, and the unnecessary radiation from the feeder line is prevented.
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公开(公告)号：JPH01268203A
公开(公告)日：1989-10-25
申请号：JP9542088
申请日：1988-04-20
Applicant: TOSHIBA CORP
Inventor： SAWADA HISASHI , MOROOKA TASUKU
IPC: H01Q13/10
Abstract: PURPOSE:To obtain an inexpensive planar antenna which is high in gain and efficiency by providing plural spherical supporting bodies between the outside conductor of a tri-plate line and a dielectric base plate supporting the central conductor of the tri-plate line in such a way that the supporting bodies do not overlap the central conductor and an air layer is formed between the outside conductor and dielectric base plate. CONSTITUTION:The supporting bodies 7 are stuck between the outside conductor 1 of the tri-plate and the film-like base plate 2 supporting the central conductor 5 of the tri-plate line after a bonding agent 6 is applied by using a printing technique in such a way that the supporting bodies 7 do not overlap the central conductor 5. Then the tri-plate is united to one body by pressworking so as to realize a triple line forming a layer which is nearly an air layer and the tri-plate line is used for a feeder circuit. Thus this planar antenna can be reduced in dielectric loss and improved in efficiency even when the antenna is constituted in an array. In addition, the cost of the antenna can be reduced because the mass-productivity can be improved.
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公开(公告)号：JPH01268201A
公开(公告)日：1989-10-25
申请号：JP9541988
申请日：1988-04-20
Applicant: TOSHIBA CORP
Inventor： SAWADA HISASHI , KAWABATA KAZUAKI
IPC: H01Q1/36
Abstract: PURPOSE:To make a planar antenna highly efficient even when it is flared by constituting a feeder circuit by using a tri-plate type line forming an air layer. CONSTITUTION:Projecting parts 17 and recessed parts 16 and 18 constituted of a dielectric substance or metal are respectively provided on both surfaces of a dielectric base plate 12 supporting the central conductor 15 of a tri-plate line and the outside conductor 11 and base conductor 13 of the tri-plate of the line in such a way that the parts 17, 16, and 18 do not overlap the central conductor 15 and the projecting parts 17 can be respectively engaged with the recessed parts 16 and 18. Thus a tri-plate line forming an air layer is realized and used for a feeder circuit. Since the feeder circuit is constituted by using the tri-plate type line forming an air layer, most of the inside of the line can be filled up with air and the dielectric loss can be reduced, and thus, the efficiency of this antenna can be improved even when the antenna is constituted in an array.
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