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21. 发明专利

JPS56137702A DIRECTIONAL FILTER 失效
公开(公告)号：JPS56137702A
公开(公告)日：1981-10-27
申请号：JP3998880
申请日：1980-03-28
申请人： NIPPON TELEGRAPH & TELEPHONE , MITSUBISHI ELECTRIC CORP
发明人： KUMAZAWA HIROYUKI , ISHIDA OSAMI , TAKEDA FUMIO , KANITANI SHIYOUJIROU
IPC分类号： H01P1/209 , H01P1/213 , H01P5/18
摘要： PURPOSE:To obtain a thin resonator by constituting the resonator by bringing two straight rectangular waveguides into contact at wider wall surfaces, respectively and by connecting E corners. CONSTITUTION:Waves of frequencies f1, f2 and f3 are inputted to terminal I of main waveguide 1 and one circumferential length of resonator 9 is set to a multiple of the wavelength in the waveguide of frequency f2, so that resonator 9 resonates to generate the wave of frequency f2 coupled by coupling hole 4. Waves of other frequencies f1 and f3 are led out to terminal II by passing without being influenced by resonator 9. The wave of frequency f2 is further passed through coupling hole 5 and led out to terminal IV of the subordinate waveguide.

22. 发明专利

JPS5560308A MULTIIBEAM ANTENNA 失效
公开(公告)号：JPS5560308A
公开(公告)日：1980-05-07
申请号：JP13241578
申请日：1978-10-27
申请人： MITSUBISHI ELECTRIC CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： KUMAZAWA HIROYUKI , HONMA YOSHIHIRO , KATAKI TAKASHI
IPC分类号： H01Q19/00 , H01Q25/00
摘要： PURPOSE:To increase the gain in a service area by making the greatest-diameter direction of the service area with the greatest diameter agree with the greatest- diameter direction of a beam with a beam width with the greatest diameter in the service area of the greatest diameter. CONSTITUTION:The greatest-diamter directon of a service area is equivalent to that of a segment connecting service areas T4 and T6, and main polarization direction D1 of horn H3 is so fixed that the greatest-diameter direction will agree with a polarization direction where beam width is the widest. As for the main polarization direction of a beam equivalent to another service area, main polarization of adjacent beams is inverted. Areas T4 and T6 are covered with the widest beam width, so that a decrease in gain can be lessened.

23. 发明专利

JPH0232604A MULTIBEAM ANTENNA 失效
公开(公告)号：JPH0232604A
公开(公告)日：1990-02-02
申请号：JP18173888
申请日：1988-07-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KONDO AKIRA , KUMAZAWA HIROYUKI
IPC分类号： H01Q19/17 , H01Q19/195 , H01Q25/00
摘要： PURPOSE:To respond to the change of the standstill position of a satellite flexibly by providing two pairs of feed horns, and using selectively the feed horn corresponding to the standstill position of the satellite. CONSTITUTION:The feed horns (2-4) are used in the case of using a first satellite standstill position, and radio waves emitted from those horns transmit a polarized selection plate 7, and are reflected on a reflecting mirror 1, and go to beams (2'-4'), then, areas (2''-4'') are irradiated by them. Meanwhile, in the case of using a second satellite standstill position by changing the standstill position of the satellite, the feed horns 2, 5 and 6 are used, and areas 5'' and 6'' are irradiated by the radio waves emitted from the feed horns 5 and 6. In such a way, a beam corresponding to a beam irradiation area on the ground can be emitted even when the standstill position of the satellite is changed after the design of an antenna feed system is completed.

24. 发明专利

JPH01149503A RING TYPE FREQUENCY SELECTING BOARD 失效
公开(公告)号：JPH01149503A
公开(公告)日：1989-06-12
申请号：JP30756887
申请日：1987-12-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KONDO AKIRA , KUMAZAWA HIROYUKI
IPC分类号： H01P1/213 , H01Q15/14
摘要： PURPOSE:To make a reflecting frequency band into a wide band by alignment- arranging plural kinds of conductor rings different in radius alternately, and forming a frequency selecting board. CONSTITUTION:A ring type frequency selecting board FSS 0 is formed by arranging a metallic ring 9 of a radius r1 and a metallic ring 10 of a radius r2 in a period (p) alternately. It can be regarded as the synthesization of an FSS 1 formed of the ring 9 of only the radius r1 and an FSS 2 formed of the ring 10 of only the radius r2. Thus, for the reflecting loss characteristic of the FSS 0, as indicated in a characteristic curve 13, a band width f0 of

25. 发明专利

JPS603209A ANTENNA IN COMMON USE FOR MULTI-FREQUENCY BAND 失效
公开(公告)号：JPS603209A
公开(公告)日：1985-01-09
申请号：JP11069783
申请日：1983-06-20
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： TSUKADA NOBUSHIGE , KUMAZAWA HIROYUKI , ANDOU MAKOTO
IPC分类号： H01Q19/17 , H01Q5/00 , H01Q19/195 , H01Q21/28
摘要： PURPOSE:To attain ease of arrangement of a primary radiator by forming two foci being in the relation of mirror image respectively by one focus of a reflection mirror face and two frequency selecting plates so as to realize three mechanically separated foci in total. CONSTITUTION:The 1st primary radiator 3 at a frequency band f1 is arranged at a focus F0 of an offset reflection mirror face 1' and the 2nd primary radiator 4 for a frequency band f2 is arranged at a focus F1 being in the relation of mirror image to the focus F0 by the 1st frequency selecting plate 6. Moreover, the primary radiator 5 having the same frequency bands f3, f3' and obtaining different radiation beams P3, P3' is arranged at a focus F2 in the relation of mirror image to the focus F0 by the 2nd frequency selecting plate 7. The selecting plates 6, 7 are so constituted that the former passes through the frequency band f1 and reflects the frequency band f2 and the latter passes through the frequency bands f1, f2 and reflects the frequency bands f3, f3'.

26. 发明专利

JPS5830210A MULTI-FREQUENCY BAND COMMON ANTENNA 失效
公开(公告)号：JPS5830210A
公开(公告)日：1983-02-22
申请号：JP12819581
申请日：1981-08-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ANDOU MAKOTO , UENO KENJI , KUMAZAWA HIROYUKI
IPC分类号： H01Q19/17 , H01Q5/00 , H01Q19/18 , H01Q21/28
摘要： PURPOSE:To easily manufacture a titled antenna and to eliminate a dielectric loss, by constituting it so that frequency can be used in common by a simple specular surface, without using a frequency selecting board and a frequency common-use primary radiator. CONSTITUTION:A titled antenna is formed by a main reflector 1 consisting of a paraboloid of revolution, a subreflector 2 consisting of a hyperboloid of revolution which has been placed so that one of 2 focuses is held in common with the reflector 1, and a primary radiator 4 placed in the vicinity of the other focus. In this case, another primary radiator 5 for irradiating an electromagnetic wave whose frequency is different from that of the radiator 4 is placed in the vicinity of a common focus of the reflector 1 and a reflector 9. A part of the reflector 9 is cut so that irradiation to the reflector 1 from the radiator 5 can be executed. As a result, an electric wave of low frequency is radiated from the radiator 5, is reflected by the reflector 9, and after that, becomes a wave surface as if it has been radiated from a focus 3, is made incident to the reflector 1, becomes in-phase, and becomes a radiation beam.

27. 发明专利

JPS55141801A BRANCHING UNIT 失效
公开(公告)号：JPS55141801A
公开(公告)日：1980-11-06
申请号：JP4973179
申请日：1979-04-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KUMAZAWA HIROYUKI , AKIYAMA SATORU
IPC分类号： H04B7/26 , H01P1/213 , H03H7/46 , H04B1/04
摘要： PURPOSE:To enable the selection of the output frequency freely with less loss, by combining the periodic type branching unit having two paris of the input and output terminals and the switch having three input and output terminals. CONSTITUTION:Taking the transmission frequency of the transmitter TX1 as F1 and that of the transmitter TX2 as F2. F1 and F2 are synthesized at the input and output terminal 29 of the periodic type branch unit PF19 and picked up. When the waves of F1...Fn are input to a pair of inputs of the periodic type branch unit, the outputs of F1, F3...are picked from one output and these of F2, F4... from another output with the operation of the directional coupler and the phase shifter in the unit. That is, if the transmission is made with F2 for TX1 and F1 for TX2, the synthesized wave is appeared at the output terminal 30. The transmission can be made with almost no loss even if the transmission frequencies of TX1 and TX2 are selected so that an odd or even number is not given.

28. 发明专利

JPS5481056A VARIABLE POWER DISTRIBUTOR 失效
公开(公告)号：JPS5481056A
公开(公告)日：1979-06-28
申请号：JP14822477
申请日：1977-12-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KUMAZAWA HIROYUKI , KAGOSHIMA KENICHI , UENO KENJI , SUGAI TAKASHI
IPC分类号： H01P1/17 , H01P5/04 , H01P5/12 , H01P5/16
摘要： PURPOSE:To divide input power at any ratio neither using a dielectric plate and phase shifter of a ferrite nor moving waveguide system at an input terminal side (transmitter side) and output terminal side (antenna element side). CONSTITUTION:Rectangular waveguides 15 and 17, twist waveguide 16 with several steps, rectangle-to-circle converting waveguide 14, circular waveguide 1, and cross polarization discriminators 3 and 4 are arranged coaxially in sequence with rotary gap 19 interposed between circular waveguide 1, and cross polarization discriminators 3 and 4. Then, the variable power distributor is so constituted that rectangle-to-circle converting waveguide 14 and circular waveguide 1, rectangular waveguides 15 and 17 through twist waveguide 16 with steps, and cross polarization discriminators 3 and 4 through rotary gap 19 will rotate relatively.

29. 发明专利

JPS5225546A DOUBLE RESONANT RING TYPE WAVEEDIVIDER 失效
公开(公告)号：JPS5225546A
公开(公告)日：1977-02-25
申请号：JP10115775
申请日：1975-08-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA KUNIKATSU , OOTOMO ISAO , KUMAZAWA HIROYUKI
IPC分类号： H01P1/213
摘要： PURPOSE:To simplify the structure together with improving the performance of the amplitude characteristics and realizating the simple adjustment.

30. 发明专利

JPH01188004A FREQUENCY SELECTING PLATE 失效
公开(公告)号：JPH01188004A
公开(公告)日：1989-07-27
申请号：JP956488
申请日：1988-01-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ABE HIDEHIKO , KONDO AKIRA , KUMAZAWA HIROYUKI
IPC分类号： H01Q15/14
摘要： PURPOSE:To attain light weight without losing electric characteristics such as insertion loss and scttering by selecting a face of a 1st dielectric substance larger than the face of a 2nd dielectric sheet and providing a dielectric spacer only to a part limited by the face of the 2nd dielectric sheet. CONSTITUTION:Since an incident area 14 of a transmission wave is sufficiently smaller than a projection area 15 of a reflected wave, the incident area 14 of the transmission wave is surrounded by a peripheral support frame 12. No dielectric spacer 11 is provided on a part at the outside of the support frame 12 and the dielectric sheet 9 for the part is omitted and only a reinforcement member 16 to support the dielectric sheet 9 of the projection area 15 is installed. The transmission wave transmits through the dielectric sheets 9 on both the faces, but the reflected wave, as shown in a path 7, is reflected in the sheet face mostly on the reflector and radiator side and the other sheet face does not almost contribute to the reflecting characteristic. Thus, even when the dielectric sheet 9 and the dielectric spacer 11 for the part are omitted, the reflection characteristic is not lost.

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