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1. 发明专利

JPS60217701A MICROSTRIP LINE 失效
公开(公告)号：JPS60217701A
公开(公告)日：1985-10-31
申请号：JP7284184
申请日：1984-04-13
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HIKITA MITSUTAKA , KANEKO YOUICHI , USUI IKUO , TANAKA TOSHINORI , KATOU HARUHIKO
IPC分类号： H01P3/08 , H01P5/18
摘要： PURPOSE:To improve the VSWR of a 3-wire type connecting line by providing an earthing plate on the upper side of a microstrip line via a space having an equal height as the thickness of a board. CONSTITUTION:The earthing plate 11 is provided on the upper side of the microstrip line via space having the same height as the thickness of a dielectric board 13. Thus, an effective specific dielectric constant epsiloneff is made constant independently of the width W of a line being the geometrical dimension of the strip line 12, and the wavelength of the electromagnetic wave propagating the line is made constant independently of the characteristic impedance thereby improving the design. Since the effective specific dielectric constant of modes OE, EE and OO in the 3-line type connecting line is made constant, the phase of each mode is matched, the reflection is less and the VSWR is improved.

2. 发明专利

JPS60223302A MICROWAVE SWITCH MATRIX 失效
公开(公告)号：JPS60223302A
公开(公告)日：1985-11-07
申请号：JP7857584
申请日：1984-04-20
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KANEKO YOUICHI , BABA YOSHIHIRO , KATOU HARUHIKO , TANAKA TOSHINORI
IPC分类号： H01P1/15 , H03K17/00
摘要： PURPOSE:To attain thin profile and ease of connection of lines and to attain high reliability throgh duplicated switch system by arranging upward similarly a part of a directional coupler of other line in a shielded flat slot provided at the rear side of an earth conductor of one line. CONSTITUTION:A module 1 having a function of unit cross point consists of switch amplifier MICs (microwave ICs) 3, 4 being active and spare ICs on a block conductor 2, the MIC group of the 1st layer comprising an output line directional coupler MIC5, and the MIC of the 2nd layer comprising an input line directional coupler MIC8 arranged upward similary the same as the lst layer in a flat duct 7 having nearly double thickness of the MIC substrate made of the earth conductor of the MIC group of the 1st layer and the slot of the block conductor 2. A microwave signal input is fed to a terminal 9, passes through a microwave strip line 10 and a directional coupler 11 constituted by arranging three lines closely and is given to an input terminal of an adjacent module from a terminal 12. Only a signal fed from the left to the directional coupler 11 is extracted at terminals 13, 14.

3. 发明专利

JPS60223303A MICROWAVE SWITCH MATRIX 失效
公开(公告)号：JPS60223303A
公开(公告)日：1985-11-07
申请号：JP7857684
申请日：1984-04-20
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KANEKO YOUICHI , BABA YOSHIHIRO , USUI IKUO , KATOU HARUHIKO , TANAKA TOSHINORI
IPC分类号： H01P1/15 , H03K17/00
摘要： PURPOSE:To miniaturize the entire device by providing a line length adjusting section in a module so as to optimize the length of line thereby reducing the amount of reflection produced on input/output lines and eliminating the need for circuit components such as an isolator for absorbing a reflected wave. CONSTITUTION:A unit module 1 of a switch matrix is constituted in a form of a microwave integrated circuit, a directional coupler 4 of 1/4-wavelength is arranged on the way of a microstrip line 3 for input on a ceramic substrate 2 and a branched input signal is fed to an amplifier whose gain is variable. A resistive termination 6 is arranged at other end of a branch line so as to absorb the reflected wave. A signal switched on/off substantially by changing over the gain of the amplifier 5 is led to a resistive termination 9 from a directional coupler 8 comprising a microwave IC arranged at the back side from a through-hole 7 and a branched output is transmitted to an output line 10. The line length adjusting section 11 in which the input line 3 is meandered and a line length point contact section 12 of the output line 10 select a phase angle in the unit module as 0.5pi so as to reduce the input/output standing wave ratio as a whole for the combinations of many unit modules.

4. 发明专利

JPS601919A MICROWAVE SWITCH MATRIX 失效
公开(公告)号：JPS601919A
公开(公告)日：1985-01-08
申请号：JP10783683
申请日：1983-06-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANAKA TOSHINORI , KATOU HARUHIKO
IPC分类号： H03K17/00 , H03K17/62
摘要： PURPOSE:To constitute a small-sized and light-weight switch matrix with high reliability by providing a large quantity of switch parts and driving switches individually, and selecting and controlling switches used for switching with a control signal. CONSTITUTION:At a normal time, switches 9-1 and 9-2 are used for switching. In this case, switches 9-1 and 9-2 are driven in accordance with control signals to terminals 11-1 and 11-2 by driving circuits 10-1 and 10-2. At this time, control signals are always inputted to terminals 11-3 and 11-4. If antrouble occurs in one of switches 9-1, 9-2, 10-1, and 10-2, control signals which turn off switches 10-1 and 10-2 are inputted to control signal terminals 11-1 and 1-2, and switches 9-3 and 9-4 and driving circuits 10-3 and 10-4 are used for signal switching. Thus, troubles are recovered unless switches 9-1 and 9-2 are faulty in the turn-on state together.

5. 发明专利

JPS5843636A NON-LINEAR DISTORTION COMPENSATING SYSTEM OF SATELLITE COMMUNICATION 失效
公开(公告)号：JPS5843636A
公开(公告)日：1983-03-14
申请号：JP14096181
申请日：1981-09-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KATOU HARUHIKO
IPC分类号： H04B7/005 , H04B7/15 , H04B7/185
摘要： PURPOSE:To compensate non-linear distortion of a repeater loaded on a satellite by an earth station, by receiving a signal of the own station through a satellite by a transmitting station, comparing a demodulating signal of a specific channel in said signal with a transmitting signal, and controlling a distortion compensating circuit of the own station. CONSTITUTION:Input signals from plural signal input terminals 11 of a base station 2 are modulated by modulators 14-14'', and are synthesized by a signal synthesizing circuit 16. To the circuit 16, a non-modulated wave of the i-th channel of about center frequency of a band is inputted from an oscillator 15. An output of the circuit 16 is sent to a satellite repeater 1 through a distortion compensating circuit 17, a transmitter 18 and a transmitting and receiving branching filter 19. An output of the repeater 1 is received by the base station 2, is led to a channel selector 21 through the branching filter 19 and a receiver 20, the i-th channel is extracted by the selector 21, and it is led to a carrier wave-to-noise power ratio (C/N) measuring circuit 22. An output of the circuit 22 is led to a distortion compensating circuit controlling circuit 23, a parameter for deciding a non-linear characteristic of the circuit 17 is controlled so that a C/N value output of the circuit 22 becomes maximum, and non-linear distortion of the repeater 1 is compensated.

6. 发明专利

JPS5431216A TRANSMISSION*RECEPTION FREQUENCY CONTROL SYSTEM FOR SATELLITE COMMUNICATION 失效
公开(公告)号：JPS5431216A
公开(公告)日：1979-03-08
申请号：JP9693377
申请日：1977-08-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KATOU HARUHIKO
IPC分类号： H04B7/15 , H04B7/212
摘要： PURPOSE:To ensure the compensation for the frequency fluctuation of the local oscillator in the transponder of the communication satellite at the base station by deviating the local oscillation frequency of the receiving frequency converter in accordance with the deviation given from the prescribed value of the oscillation frequency at the transmitting station part.

7. 发明专利

JPS58133051A COMPENSATING AND CONTROLLING SYSTEM OF NONLINEAR DISTORTION 失效
公开(公告)号：JPS58133051A
公开(公告)日：1983-08-08
申请号：JP1499482
申请日：1982-02-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOKUMITSU TSUNEO , KATOU HARUHIKO
IPC分类号： H04B3/06 , H04B3/04
摘要： PURPOSE:To control the signal passing through a main circuit without giving any temporary deterioration to the signal, by using a nonlinear parameter of a nonlinear circuit which is contained in a thread divided from the main circuit to control a distortion compensating circuit. CONSTITUTION:A nonlinear circuit 5 has the nonlinear characteristics opposite to those of a distortion compensating circuit 2, and the general characteristics of the circuit 2, a repeater 1 and the circuit 5 are coincident only with those of the repeater 1. Now the nonlinear characteristics of the repeater 1 have a change, and therefore the compensation must be given again. In such a case, the nonlinear parameter of a distortion compensating circuit 6 is varied and then set so that the distortion is minimized by the circuit 6 for the output of the circuit 5. In this case, the nonlinear parameter of the circuit 6 should be coincident with the optimum nonlinear parameter of the circuit 2 which compensates the distortion of the repeater 1. Therefore the parameter of the circuit 2 is set again in response to the amount of nonlinear parameter of the circuit 6.

8. 发明专利

JPS5819040A SATELLITE RELAY DEVICE 失效
公开(公告)号：JPS5819040A
公开(公告)日：1983-02-03
申请号：JP11706281
申请日：1981-07-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANAKA TOSHINORI , KATOU HARUHIKO , MIZUNO HIDEKI
IPC分类号： H04B7/185 , H04B7/204
摘要： PURPOSE:To realize a transponder for in-satellite switching time division multiple access satellite communication system of single conversion, by using a frequency converter making a local oscillator variable. CONSTITUTION:Transmission is done from each earth station so that a burst up-link signal (link from an earth station to a satellite) can not be overlapped with each other. In a satellite, up-link signals with f1-fn frequencies are received from antennas 1-1-1-N and amplified at a low noise amplifier 3. The amplified burst signal is frequency-converted with time division at a frequency converter 4, the converting frequency of which is timewise switched by controlling the oscillating frequency of local oscillators 5'-1-5'-N with a switching control circuit 10'. The frequency converted signal is synthesized for power and split at a power synthesizing splitter 11, rearranged by destination with band pass filters 12-1-12-N, amplified at a high output amplifer 9 and transmitted to an earth station from antennas 2-1-2-N.

9. 发明专利

JPS58145242A SYSTEM COMPRISING PRESENT USE DEVICE AND SPARE DEVICE 失效
公开(公告)号：JPS58145242A
公开(公告)日：1983-08-30
申请号：JP2737982
申请日：1982-02-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MIZUNO HIDEKI , KATOU HARUHIKO , TANAKA TOSHINORI
IPC分类号： G05B9/03 , H04B1/74 , H05K10/00
摘要： PURPOSE:To decrease the number of components and to attain high reliability of a system, by using a 4-terminal construction of a hybrid circuit having higher reliability than that of an active circuit for a looped path of a connection section. CONSTITUTION:A switch 2a is operated to connect a hybrid circuit 6a and a receiver 3a, a switch 2d is operated to connect the receiver 3a and a hybrid circuit 6c, a switch 2g is operated to connect a transmitter 4a and the circuit 6c, and switches 2j, 2k are operated to connect the transmitter 4a and a signal output terminal 5a. If the receiver 3a is failed, the switches 2b, 2c connects the signal input terminal 1a and the circuit 6c via a receiver 3b. This state is used as a spare system, the number of components is decreased to improve the reliability.

10. 发明专利

JPS53121448A AMPLIFIER CIRCUIT OF NEGATIVE RESISTANCE 失效
公开(公告)号：JPS53121448A
公开(公告)日：1978-10-23
申请号：JP3540977
申请日：1977-03-31
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KATOU HARUHIKO , NAKAYAMA MASAYUKI
IPC分类号： H03F3/10 , H03F3/46 , H03F3/48 , H03F3/60
摘要： PURPOSE:To give high gain and broad band width in an arbitrary frequency, by making easy the adjustment of reactance through the provision of the reactance element controllable from external near the negative resistance element, in the negative resistance amplifier providifng a negative resistance element in the coaxial circuit.

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