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1. 发明专利

JPH11298433A MULTI-CARRIER BATCH PROCESSING CIRCUIT 失效
公开(公告)号：JPH11298433A
公开(公告)日：1999-10-29
申请号：JP9922898
申请日：1998-04-10
申请人： NEC CORP , JISEDAI EISEI TSUSHIN HOSO SYS
发明人： YONEDA MASAYOSHI , DOBASHI YASUE , TAKEDA OSAMU , HASHIMOTO YUKIO
IPC分类号： H04J1/00 , H04J3/00 , H04J4/00
摘要： PROBLEM TO BE SOLVED: To make the circuit small in size, light in weight and to reduce the power consumption. SOLUTION: In this processing circuit, a mixer 2 applies quasi-synchronization detection to a plurality of frequency multiplex carriers, an A/D converter 3 converts the resulting carrier into a digital signal and it is collectively demultiplexed by a batch demultiplexer circuit 4 conventionally, subsequently a time multiplexer circuit 5 distributes the batchwise demultiplexed carriers properly in time and space, multiplexes them timewisely and provides an output to a multi-carrier batch demodulation circuit 6. A spatial multiplex release circuit 11 of the collective demodulation circuit 6 releases spatial multiplex of the multi-carrier to demultiplex the time multiplex carriers with a multiplicity of (m) and m-multiplicity demodulation circuits 12-1 to 12-n that respectively receive the demultiplexed time multiplex carriers apply arithmetic processing to the multiplexed parts collectively. As a result, since the m-multiplicity demodulation circuits 12-1-12-n are placed spatially as n-set that is the total carrier number/m, the number of the demodulation processing circuits is reduced.

2. 发明专利

JPH11295366A METHOD FOR MEASURING PATTERN DIRECTION OF ANTENNA ABOARD SATELLITE USING MULTIBEAM, ETC., OR METHOD FOR ESTIMATING POSITION OF MOBILE GROUND STATION 失效
公开(公告)号：JPH11295366A
公开(公告)日：1999-10-29
申请号：JP10319598
申请日：1998-04-14
申请人： JISEDAI EISEI TSUSHIN HOSO SYS
发明人： TAKEDA OSAMU , HASHIMOTO YUKIO , KAWAKAMI YOICHI
IPC分类号： G01R29/10 , G01S19/38 , H01Q3/26 , G01S5/14
摘要： PROBLEM TO BE SOLVED: To eliminate errors due to a time change in the conventional antenna pattern measurement when a pattern of a multibeam antenna aboard a satellite is measured. SOLUTION: According to this method for measuring a pattern direction of an antenna aboard a satellite using multibeams, etc., a test signal of a plurality of beams emitted from a multibeam transmission antenna 2 aboard a satellite 1 or the like is multiplexed, e.g. frequency divided or the like, and detected almost simultaneously at one fixed ground station 6. A relative level difference of two detection powers among the plurality of beams detected at the ground station 6 is detected. The direction of a pattern 4 of the transmission antenna aboard the satellite 1 or the like is measured from the intersection of a plurality of contour curves based on the relative level difference.

3. 发明专利

JPH11266115A EXTENSION TYPE ANTENNA TRUSS STRUCTURE 失效
公开(公告)号：JPH11266115A
公开(公告)日：1999-09-28
申请号：JP6635398
申请日：1998-03-17
申请人： MITSUBISHI ELECTRIC CORP , JISEDAI EISEI TSUSHIN HOSO SYS
发明人： NAKAGAWA JUN , YAMATO MITSUTERU , HARIO KENICHI , TSUNODA HIROAKI , KAWAKAMI YOICHI
IPC分类号： H01Q15/14 , H01Q1/08 , H01Q1/28
摘要： PROBLEM TO BE SOLVED: To provide an extension type antenna truss structure which surely allow an antenna reflection mirror part to be extended, takes a satisfactory balance of the inner force structurally, is light-weight and can make the storage size smaller. SOLUTION: On an upper surface of a basic module 1 of an extension truss is installed a mirror surface 2a of an antenna reflection mirror surface part 2, on a lower surface is installed a rear surface cable 2b, and by connecting both of them with a tie cable 2c, a reflection mirror surface shape is formed. Moreover, an upper and lower screen inner material for carrying in-surface flexibility of a conventional truss structure is removed and the in-surface flexibility of the truss structure can be secured by the antenna reflection mirror surface part 1.

4. 发明专利

JPH10256805A PHASE SHIFTER 失效
公开(公告)号：JPH10256805A
公开(公告)日：1998-09-25
申请号：JP5156597
申请日：1997-03-06
申请人： NEC CORP , JISEDAI EISEI TSUSHIN HOSO SYS
发明人： TEZUKA MASASHI , KAWAKAMI YOICHI , MIYAUCHI MASAO
IPC分类号： H01P1/185
摘要： PROBLEM TO BE SOLVED: To reduce the size and weight of a device that needs a large phase variable amount without applying a multistage constitution to a phase shifter by connecting a susceptance in parallel to varactor diode between two output ports of a hybrid and the ground. SOLUTION: The signal inputted via an RF input terminal 3 is divided by a hybrid 2, and these divided signals are reflected on a varactor diode 1 and a susceptance 6 and then synthesized again by the hybrid 2. Then the synthetic signal is outputted via an RF output terminal 5. The phase variable degree is increased by addition of the optimum susceptance accordant with the working frequency and with use of the susceptance that is synthesized with the diode 1. When the optimum susceptance has the negative value, a negative susceptance is secured by means of a capacitor. Meanwhile, a positive susceptance is secured by means of a capacitor and an inductance if the optimum susceptance has the positive value.

5. 发明专利

JPH10236399A SUPPORTING MECHANISM FOR EXPANDING TRUSS 失效
公开(公告)号：JPH10236399A
公开(公告)日：1998-09-08
申请号：JP3927297
申请日：1997-02-24
申请人： MITSUBISHI ELECTRIC CORP , JISEDAI EISEI TSUSHIN HOSO SYS
发明人： NARUKI HIROYUKI , NAKAGAWA JUN , HARIO KENICHI , TSUNODA HIROAKI
IPC分类号： E04B1/344 , B64G1/22
摘要： PROBLEM TO BE SOLVED: To provide a supporting mechanism for expanding truss with an enhanced expanding reliability and rigidity, with which it is practicable to grasp four lattice points on one side face of truss moving two-dimensionally in association with the expanding motion of the expanding truss. SOLUTION: A spherical joint 8 is fixed to each of the four lattice points on one side face of an expanding truss 1, and an arm 2 is coupled with each spherical joint 8, and a universal joint 9 having two shafts approx. perpendicular to the axis of the arm 2 is coupled with that end of the arm 2 which is not on the spherical joint side. A latch pin 10 is furnished to give latch restraint after expanding to each rotary shaft of the universal joint 9 followed by fixation to a mounting plate 3 in such an arrangement that the one-axis directions of universal joint 9 at four points are put identical.

6. 发明专利

JPH10160775A METHOD FOR MEASURING PATTERN OF ANTENNA MOUNTED ON SATELLITE 失效
公开(公告)号：JPH10160775A
公开(公告)日：1998-06-19
申请号：JP32903196
申请日：1996-11-26
申请人： JISEDAI EISEI TSUSHIN HOSO SYS
发明人： HARIO KENICHI , TAKEDA OSAMU , MIYAUCHI MASAO , KAWAKAMI YOICHI
IPC分类号： G01R29/10 , H01Q3/26 , H01Q25/02 , H04B7/185
摘要： PROBLEM TO BE SOLVED: To provide a method for measuring the radiation pattern and the direction of peak directivity of a communication antenna mounted on a satellite conveniently on an orbit using existing units mounted on the satellite. SOLUTION: An existing receiving antenna 6 for communication mounted on a satellite is connected with a transmission antenna 7 for communication. A signal transmitted from the ground is received by the receiving antenna 6 and then transmitted back to the ground through the transmission antenna 7 in order to measure the receiving sensitivity of the receiving antenna 6. The receiving sensitivity is measured, (1) while varying the attitude of the satellite 5, (2) while varying the position of ground antenna systems 1a, 1b or (3) while varying the radiation pattern of the receiving antenna 6 thus measuring the radiation pattern of the receiving antenna 6.

7. 发明专利

JPH1065465A HIGH FREQUENCY POWER AMPLIFIER CIRCUIT 失效
公开(公告)号：JPH1065465A
公开(公告)日：1998-03-06
申请号：JP23464496
申请日：1996-08-19
申请人： JISEDAI EISEI TSUSHIN HOSO SYS , FUJITSU LTD
发明人： ISHIDA HITOSHI
IPC分类号： H01P5/02 , H03F3/60
摘要： PROBLEM TO BE SOLVED: To maximize the power efficiency of an FET by connecting a harmonic control circuit being a short-circuit point with respect to a 2nd harmonic to an output of a semiconductor amplifier element (FET) and adjusting the length (phase) of a transmission line from the output terminal of the FET to the short-circuit point. SOLUTION: A harmonic control circuit acting like a short-circuit point with respect to a second harmonic is connected to an input terminal of an output side fundamental wave matching circuit 3 of an FET 1. A T shaped open stub 6 is formed on a dielectric board 7 in the harmonic control circuit. The fundamental wave and harmonics generated in the FET 1 enter the harmonic control circuit as traveling waves. The harmonics are reflected by the harmonic control circuit and returned to the FET 1 as a reflecting wave. The length (phase) of the transmission line from an output terminal of the FET 1 to the short-circuit point is adjusted so that the harmonic traveling wave from the FET 1 and the reflected wave from the harmonic control circuit are cancelled with each other.

8. 发明专利

JPH09247072A FEED CIRCUIT FOR MULTIPLE BEAM ANTENNA 失效
公开(公告)号：JPH09247072A
公开(公告)日：1997-09-19
申请号：JP8308896
申请日：1996-03-13
申请人： JISEDAI EISEI TSUSHIN HOSO SYS
发明人： OKAMOTO TERUYOSHI , HARIO KENICHI , YAMASA YASUHIKO
IPC分类号： H01Q3/34 , H01Q25/00 , H04B7/185
摘要： PROBLEM TO BE SOLVED: To equally operate hybrid matrix amplifiers (multiple port amplifiers) connected to the output side of a feed circuit for multiple beam antennas in a moving satellite communication communicating with a moving body on ground. SOLUTION: In the antenna feed circuit of a multiple terminal power synthesis type multiple beam transmission system, which is provided with the plural hybrid matrix amplifiers (multiple port amplifiers) on the output port side of plural power distributors, is provided with plural antennas for the output port side of the hybrid matrix amplifiers and which connects them to each other, the input terminals of the hybrid matrix amplifiers are selected and the output of a power distributor is connected so that amplifier groups in the hybrid matrix amplifiers become uniform when the plural signals distributed in the arbitrary power distributor are inputted to the arbitrary hybrid matrix amplifier.

9. 发明专利

JPH08265040A RE-STORABLE EXPANSION ANTENNA AND STORING METHOD OF EXPANSION ANTENNA ON GROUND 失效
公开(公告)号：JPH08265040A
公开(公告)日：1996-10-11
申请号：JP6235995
申请日：1995-03-22
申请人： JISEDAI EISEI TSUSHIN HOSO SYS , MITSUBISHI ELECTRIC CORP
发明人： OKAMOTO TERUYOSHI , HARIO KENICHI , NARUKI HIROYUKI , TANIZAWA KAZUO
IPC分类号： H01Q15/20 , H01Q1/28
摘要： PURPOSE: To obtain the expansion antenna in which a latch state of the expanded antenna is released and can be re-stored. CONSTITUTION: A structure module of an N-prism (N is 4 or 6) is formed onto plural side faces each comprising a shaft 1 having a main hinge 2 at both ends, a folded member 3, and a pantograph member 4. A cable 13 whose one end connects to a middle part of the folded member 3 on the upper and the lower sides fo the structure module and drawn to a cross point of the pantograph members 4 in the side face including the folded member 3 is wound on a drum 14 turnable provided on the cross points of the pantograph members 4 and a small sized motor 15 to drive the drum 14 is fitted to the pantograph member 4. Furthermore, an expansion container wire 16 is wired around the structure module and the expansion container wire 16 is wound on the reel 17 and a motor 18 to provide a torque to the reel 17 is fitted.

10. 发明专利

JP2000197100A MOBILE BODY-SATELLITE COMMUNICATION SYSTEM 失效
公开(公告)号：JP2000197100A
公开(公告)日：2000-07-14
申请号：JP36828398
申请日：1998-12-25
申请人： JISEDAI EISEI TSUSHIN HOSO SYS
发明人： KAWAKAMI YOICHI , TAKEDA OSAMU , HASHIMOTO YUKIO
IPC分类号： G01C21/00 , G01S19/14 , G08G1/13 , H04B7/216 , H04W4/02 , H04W88/02 , H04Q7/34 , G01S5/14
摘要： PROBLEM TO BE SOLVED: To miniaturize a mobile body device and to simplify a mobile body position information collection system as a whole that collects positioned information of a mobile body in a center base station via a satellite. SOLUTION: In this mobile body position information collection system consisting of a plurality of position information satellites for navigation 9, that transmits time reference information with high accuracy, an on-ground mobile body 1 provided with a receiver to obtain its own position information, on the basis of the time reference information received from a plurality of the satellites 9 and satellite orbit information obtained in advance and a center base station that collects the obtained position information of the mobile body 1 that is obtained via the satellites, any of a plurality of the position information satellites for navigation 9 is provided with a transmitter/receiver that relays information to the center base station and a time information receiving antenna of the on-ground mobile body is used also as an information relay antenna. Furthermore, a CDMA system is adopted fro a two way communication method for relaying information to the center base station.

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