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1. 发明专利

JPH09139862A REMOTE CONTROL LIGHT RECEIVING DEVICE MOUNT STRUCTURE FOR CATV TERMINAL EQUIPMENT 失效
公开(公告)号：JPH09139862A
公开(公告)日：1997-05-27
申请号：JP29444995
申请日：1995-11-13
申请人： YAGI ANTENNA
发明人： KATO SEIJI , NAKANO KOICHIRO
IPC分类号： H04N5/00
摘要： PROBLEM TO BE SOLVED: To improve the space efficiency by placing a CATV terminal equipment to an optional position without the need for the location of the CATV terminal equipment at a position visible from the user with respect to the remote control light receiving device mount structure for the CATV terminal equipment installed in each guest room in, e.g. a hotel. SOLUTION: In this structure, a remote control light receiving device 14 of a CATV terminal converter 16 is designed to be a separate unit from the CATV terminal converter 16. Since the remote control light receiving device 14 is fitted to a front panel 15 of a shelf 11 like a house appliance on which a television receiver 13 is mounted, the CATV terminal converter 16 is made small. It is not required to locate the CATV terminal converter 16 at a visible position from the user like on the shelf plat 12 of the shelf 11 and the CATV terminal converter 16 is contained in a space not in use in the intrior of the shelf 11 like a house appliance. Even when a large sized television receiver 13 is in use, the space efficiency is improved and the external appearance is enhanced and no problem is caused in the installed location or the like.

2. 发明专利

JPH03145806A MICROWAVE BAND PARABOLIC ANTENNA SYSTEM 失效
公开(公告)号：JPH03145806A
公开(公告)日：1991-06-21
申请号：JP28307089
申请日：1989-11-01
申请人： YAGI ANTENNA
发明人： KATO SEIJI , TAKAHASHI AKIRA
IPC分类号： H01Q19/13
摘要： PURPOSE:To improve the electric performance without making useless any part a metallic body being a raw material by providing a folding part folded in a direction opposite to a reflecting direction to an outer circumferential ridge of a reflecting mirror formed rectangle and made of a steel metallic plate. CONSTITUTION:A folding part 14 folded in a direction opposite to a reflecting direction is formed to an outer circumferential part of a rectangular reflecting mirror 11 using a rectangular steel made metallic plate using an aluminum plate or a steel plate as a raw material. The strength to the deflection or distortion of the rectangular reflecting mirror 11 is ensured by the folding part 14. Moreover, When the rectangular size (CXD) of the rectangular reflection mirror 11 in the parabolic antenna system is made correspondent to a major diameter A and a minor diameter B of the reflecting mirror 1 in a conventional parabolic antenna, the aperture of the rectangular reflecting mirror 11 is clearly wider than the aperture of the conventional reflecting mirror 1, the gain characteristic is improved more than the spread of the aperture area and the waste of the metallic body in the manufacture is eliminated.

3. 发明专利

JPH08214238A STRUCTURE FOR PREVENTING OVERTURNING OF CATV TERMINAL CONVERTER 失效
公开(公告)号：JPH08214238A
公开(公告)日：1996-08-20
申请号：JP1932495
申请日：1995-02-07
申请人： YAGI ANTENNA
发明人： KATO SEIJI , MAKINO TADASHI , SHINGURYO OSAMU
IPC分类号： H04N5/64
摘要： PURPOSE: To make it possible to stably rotate a CATV terminal converter and a TV receiver and to surely prevent the generation of a damage and overturning. CONSTITUTION: A turn table 4 is mounted on a mounting board 3, a CATV terminal converter 1 is mounted on the turn table 4 and a TV receiver 2 is mounted on the converter 1. Overturning/damage generation preventing projection parts 10 are formed on the four corners of the lower face of a bottom plate of the converter 1. In the case of rotating the receiver 2, the receiver 2 is rotated integrally with the converter 1 by applying torque to the receiver 2 itself. When any inclination of the converter 1 is generated in the application direction of the torque, the projection parts 10 are slided on the board 3 to perform a guide function and the converter 1 is smoothly rotated. Consequently the generation of damages on the upper face of the board 3 and the generation of overturning of the converter 1 and the receiver 2 can surely be prevented.

4. 发明专利

JPH03272202A PLANAR ANTENNA 失效
公开(公告)号：JPH03272202A
公开(公告)日：1991-12-03
申请号：JP6973390
申请日：1990-03-22
申请人： YAGI ANTENNA
发明人： KATO SEIJI , WAKAO YOSHIICHI
IPC分类号： H01P1/10 , H01Q3/00 , H01Q21/24
摘要： PURPOSE:To receive a radio wave a different polarized face by one antenna by turning a gear when a shaft is operated to be turned so as to allow a moving mechanism to move a radiation element plate to the right or left by one stage of a radiation element thereby simply switching a left rotatory circularly polarized wave and a right rotatory circularly polarized wave. CONSTITUTION:A feeder line plate 3 is laminated on a metallic conductor plate 1 via a spacer, a feeding element plate 6 is movably arranged opposite to the feeder line plate 3 at a prescribed interval, a shaft 28 provided with a gear 31 is arranged turnably onto the radiation element plate 6 so that the radiation element plate 6 is moved by one stage of radiation elements 7a-7e by the turning of the shaft 28 and the gear 31. The relevant position with the feeder line plate 3 is varied by the movement of the radiation element plate 6 to select a left rotatory circularly polarized wave and a right rotatory circularly polarized wave. Thus, the a left rotatory circularly polarized wave and the right rotatory circularly polarized wave are simply switched.

5. 发明专利

JPH01236703A MICROWAVE ANTENNA SYSTEM 失效
公开(公告)号：JPH01236703A
公开(公告)日：1989-09-21
申请号：JP6227788
申请日：1988-03-16
申请人： YAGI ANTENNA
发明人： TAKAHASHI AKIRA , KATO SEIJI
IPC分类号： H01Q19/22 , H01Q7/00 , H01Q9/44 , H01Q21/24
摘要： PURPOSE:To obtain a wide band characteristic with a miniaturized system by connecting the plate of coaxial cables to respective feeding elements of a linear antenna and connecting the other ends of coaxial cables to a frequency converter. CONSTITUTION:Outer conductors of coaxial cables 14 are fixed to a metallic plate 13, and a dielectric substrate 11 on which a linear antenna 12 is worked and formed is arranged above the metallic plate 13. The plate 13 of coaxial cables 14 is connected to respective feeding elements 12a-12d of the linear antenna 12, and the other ends of coaxial cables 14 are connected to a frequency converter 15.

6. 发明专利

JPH02272901A CIRCULARLY POLARIZED WAVE GENERATOR FOR MICROWAVE BAND PRIMARY RADIATOR 失效
公开(公告)号：JPH02272901A
公开(公告)日：1990-11-07
申请号：JP9438589
申请日：1989-04-14
申请人： YAGI ANTENNA
发明人： KATO SEIJI , TAKAHASHI AKIRA
IPC分类号： H01Q19/13 , H01Q13/02
摘要： PURPOSE:To increase the strength of a dielectric cover and prevent the cover from being cracked or damaged by using a dielectric panel for which both side end parts are fitted in a statge along the axial direction of inner walls in a primary radiator and a front end is abutted to the dielectric cover. CONSTITUTION:The dielectric panel is used as a circularly polarized wave generator 22. For this panel, the both side end parts are fitted in the state along the axial direction of the inner walls in a primary radiator 21 and the front end is abutted to a dielectric cover 23. Namely, the circularly polarized wave generator 22 is arranged in a state that the front end part to be an upper end part in this case is abutted to the dielectric cover 23. Accordingly, for the dielectric cover 23, a part corresponding to a diameter is abutted and supported from the internal part of the primary radiator 21 by the circularly polarized wave generator 22. Thus, the strength of the dielectric cover 23 is increased and the cover can be prevented from being cracked or damaged.

7. 发明专利

JPH01272204A PARABOLIC ANTENNA 失效
公开(公告)号：JPH01272204A
公开(公告)日：1989-10-31
申请号：JP10039488
申请日：1988-04-25
申请人： YAGI ANTENNA
发明人： KATO SEIJI , HIDA HIROSHI , TAMURA KAZUHIKO
IPC分类号： H01Q19/13 , H01Q3/04
摘要： PURPOSE:To facilitate setting of the elevation angle of an antenna without subtly setting the extent of variable movement even in case of a small angle adjustment value by variably adjusting the elevation angle of the antenna mirror surface by an expanding/contracting mechanism of a stand. CONSTITUTION:A front stand 15 and a rear stand 16 are provided on a back arm 17 provided along the rear face of an antenna mirror surface 11. The rear stand 16 which has the front stand 15 as the center of rotation and is provided a desired gap apart from it is freely expanded and contracted. Consequently, 8mm expansion/contraction width of the stand is set for, for example, 1 deg. variable elevation angle. Thus, the extent of variable movement is not subtle though the angle adjustment value is small, and the elevation angle of the antenna is easily set.

8. 发明专利

JPH03266506A MOUNT METHOD FOR PLANAR ANTENNA 失效
公开(公告)号：JPH03266506A
公开(公告)日：1991-11-27
申请号：JP6440790
申请日：1990-03-16
申请人： YAGI ANTENNA
发明人： KATO SEIJI , TAKAHASHI AKIRA
IPC分类号： H01Q1/12 , H01Q1/22
摘要： PURPOSE:To mount the antenna strongly and easily without being subjected to a strong wind pressure and losing beauties of a building by mounting and fixing an antenna face of a planer antenna whose directivity is variable in parallel with a wall face of the building facing the incoming direction of a satellite radio wave. CONSTITUTION:A planer antenna 13 whose directivity is variable is fitted and fixed to wall faces 12, 12' of a building 11 facing the incoming direction of a satellite radio wave in parallel with the wall faces 12, 12' of the building 11. Thus, a tilt of the planer antenna 13 with respect to the wall faces 12, 12' of the building 11 is eliminated. Then the planer antenna 13 for receiving a satellite radio wave is fitted to the wall faces 12, 12' of the building 11 easily and strongly without losing beauties of the building 11 and being subjected to a strong wind pressure.

9. 发明专利

JPH02279002A HORN ANTENNA 失效
公开(公告)号：JPH02279002A
公开(公告)日：1990-11-15
申请号：JP10053789
申请日：1989-04-20
申请人： YAGI ANTENNA
发明人： KATO SEIJI , TAKAHASHI AKIRA
IPC分类号： H01P1/17 , H01Q13/02
摘要： PURPOSE:To attain excellent cross polarized wave characteristic and stable operation by forming a dielectric film to an inner wall of a horn part of a conical horn antenna made of conductors via a resistance film and loading a circularly polarized wave generator made of a dielectric plate into the circular waveguide. CONSTITUTION:The antenna consists of a conical horn antenna 11 made of conductors, a conical horn 11a of the conical horn antenna 11, and circular waveguides 11b, 12 are provided with a resistance film 12 loaded to the entire face of the inner wall of the horn 11a. Moreover, a dielectric film 13 coated to the entire face of the inner wall of the horn 11a via the resistance film 12 and a circularly polarized wave generator 14 whose both ends are made of a dielectric plate loaded along the axial direction to the inner wall of the circular waveguide 11b so as to divide the circular waveguide 11b into two are provided. The circularly polarized wave generator 14 is loaded so that the deviation angle theta from the plane E is 45 deg.. Thus, excellent cross polarized wave characteristic forming axial symmetrical beam is provided without complicated constitution, and the horn antenna with excellent stable operation is obtained.

10. 发明专利

JPH02156707A PLANER ANTENNA 失效
公开(公告)号：JPH02156707A
公开(公告)日：1990-06-15
申请号：JP31071288
申请日：1988-12-08
申请人： YAGI ANTENNA
发明人： KANEKO YOICHI , WAKAO YOSHIICHI , KATO SEIJI , MINASE ATSUSHI
IPC分类号： H01P7/06 , H01P3/123 , H01P5/08 , H01P5/12 , H01Q13/06 , H01Q21/06
摘要： PURPOSE:To attain a small sized antenna with a high efficiency by providing a ridge to a groove center formed to a waveguide. CONSTITUTION:A ridge waveguide 1 consists of a waveguide main body 2 made of a metallic conductor and a sheet plate 3 covering its upper face. Then a groove 4 whose width and depth are respectively W and H is formed to the waveguide main body 2. Moreover, a ridge 5 whose width and height are respectively (t) and 1/4 wavelength or over is provided to the center of the groove 4. Furthermore, a line and a radiation element are coupled in terms of electromagnetic field by approaching the radiation element to the ridge 5. Thus, since the line width is narrow, a simple parallel feed system is adopted thereby making the arrangement interval of the radiation elements to be 0.9 wavelength or less and reducing the line loss of the feeding line to be that of a standard waveguide.

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