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1. 发明专利

JP2004032239A Amplitude modulator 有权
公开(公告)号：JP2004032239A
公开(公告)日：2004-01-29
申请号：JP2002183918
申请日：2002-06-25
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： BABA MITSUYASU
IPC分类号： H03C1/58 , H01P1/00 , H01P3/16 , H01P5/18 , H03C7/02
摘要： PROBLEM TO BE SOLVED: To provide an amplitude modulator which can reduce a number of parts and a number of production man-hour with a simple configuration without necessity for a circulator and which is superior to productivity.
SOLUTION: An amplitude modulator 1 comprises two pieces of conductor plates 2, 3, a first dielectric waveguide 4 and a second dielectric waveguide 5 provided between the conductor plates 2 and 3, a directional coupler 6 for coupling the dielectric waveguides 4, 5 by disposing them near each other and delivering carrier waves, a first diode 17 and a second diode 18 which are disposed respectively near a first terminal 8 formed in the dielectric waveguide 4 and a second terminal 9 formed in the dielectric waveguide 5, a first terminator 25 and a second terminator 26 connected to the first and second diodes 17, 18 respectively, and a signal source 27 for controlling a bias voltage.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JPH09326640A SLOT LINE BALANCED MODULATOR 失效
公开(公告)号：JPH09326640A
公开(公告)日：1997-12-16
申请号：JP14161396
申请日：1996-06-04
申请人： FUJITSU LTD
发明人： ADACHI AKIFUMI , HONGO HIRONOBU , SHIGAKI MASAFUMI
IPC分类号： H03C1/58
摘要： PROBLEM TO BE SOLVED: To provide a circuit of a balanced phase modulator of very high frequency concerning the circuit configuration of the balanced phase modulator using the slot line of microwaves/milliwaves formed on the ground conductor surface of a dielectric board. SOLUTION: In order to provide the modulated output of phase shift quantity 0-π at the output terminal of a line for synthesizing two lines branching an input signal into two parts, positions for mounting two diodes 2a and 2b for turning on/off the respective lines for synthesizing these two branched lines on the lines are set at positions mutually separated for a certain specified length different from the positions just after branching from a slot line 3 for input signal toward two slot lines 3a and 3b but circuit constituting means 3c and 3d are provided for producing a state equivalent with the state of short- circuiting/opening the input terminal of the slot line for a length λg/4 for synthetic output at the final section of two branched lines in the manner of high frequency.

3. 发明专利

JPH06105824A APPARATUS AND METHOD FOR PROCESSING MAGNETIC RESONANCE SIGNAL 失效
公开(公告)号：JPH06105824A
公开(公告)日：1994-04-19
申请号：JP3651793
申请日：1993-02-25
申请人： TOSHIBA CORP
发明人： TEIMOSHII AARU FUOTSUKUSU , JIERII SHII POSURASUZUNII
IPC分类号： A61B5/055 , F02B75/02 , G01R33/32 , H03C1/54 , H03C1/58 , H03D7/14 , G01R33/28
摘要： PURPOSE:To provide a processor for a magnetic resonance signal which enables the picking up of a magnetic resonance signal with limited noise from a multicoil detector while allowing the realization of high resolutions. CONSTITUTION:This processor is provided with an input mixer means which performs a frequency shifting of magnetic resonance signals to a second frequency band from a first frequency band, a bandpass filter means controllable to perform a bandpass filter processing of outputs from the input mixer means and an output mixer means which performs a frequency shifting of magnetic resonance signals from the controllable bandpass filter means to the first frequency band from the second frequency band. Also included are an adder 142 which couples signals from the output mixer means to generate an output signal of a low noise, an up/down mixer controller 144 which controls the frequency shifting of the input mixer means and the output mixer means and a phase/band width controller 146 to control the band width and the phase characteristic of the controllable bandpass filter means.

4. 实用新型

JPH0284413U 失效
公开(公告)号：JPH0284413U
公开(公告)日：1990-06-29
申请号：JP16274288
申请日：1988-12-15
IPC分类号： H03C1/58

5. 发明专利

JPS631764B2 失效
公开(公告)号：JPS631764B2
公开(公告)日：1988-01-14
申请号：JP5820280
申请日：1980-04-30
申请人： ANRITSU CORP
发明人： HITAI TAKASHI
IPC分类号： H03C1/58 , H01P5/10 , H03C7/02

6. 发明专利

JPS632409A MICROWAVE BALANCED MODULATOR 失效
公开(公告)号：JPS632409A
公开(公告)日：1988-01-07
申请号：JP14583186
申请日：1986-06-20
申请人： FUJITSU LTD
发明人： SUGAWARA HIDEO
IPC分类号： H03C1/58 , H03C7/00 , H04L27/22
摘要： PURPOSE:To make the substrate preparation and circuit packaging of a microwave balanced modulator easier and, at the same time, to reduce the cost of the modulator, by constituting all the transmission circuits constituting the modulator on one surface of a dielectric substrate together with micro-strip lines. CONSTITUTION:On the surface of a dielectric substrate 100, all the transmission circuits, such as the-1st 4th strip conductors 1-4 used as micro-strip lines, a strip-shaped dielectric base plate 5, the 1st and 2nd diodes 61 and 62, etc., which are required by this device are constituted. An inputted carrier P1 of a microwave is opposite-phase distributed to conductors 2 and 3 through a conductor 1 and the base plate 5 and offset by a conductor 4. Thus a balanced state is maintained. When a modulation signal P3 is inputted, the diodes 61 and 62 are turned on/off in accordance with the sign (positive or negative) of the input pulse and a modulated signal P2 is outputted. When all the transmission circuits are constituted on one surface of the base plate 100 in such way, the substrate preparation and circuit packaging become easier and the cost can be lowered.

7. 发明专利

JPS62203446A BALANCED MODULATOR 失效
公开(公告)号：JPS62203446A
公开(公告)日：1987-09-08
申请号：JP4704186
申请日：1986-03-03
申请人： ALPS ELECTRIC CO LTD
发明人： YOSHISATO AKIYUKI , IGARASHI SADAO , SHIGIHARA AKIRA , KAJITA KAZUTOYO
IPC分类号： H03C1/58 , H04L27/20
摘要： PURPOSE:To correct the level difference of two kinds of modulated signal into '0' by a single power supply by adopting the constitution that the level and direction of a bias current of a diode are set optionally. CONSTITUTION:A bias voltage of an intermediate tap 1c at the input side is set by a resistance value of the tap 1c of a variable resistor 11 and the impedance of a digital signal line 14 through the voltage division of a single power voltage and the bias voltage of the tap 3c at the output side is set by the voltage division of the resistor of the tap 3c of the variable resistor 11 and the impedance of the resistor 13. Thus, in adjusting the position of a slider 12 of the variable resistor 11, the bias voltage between the taps 1c, 3c is adjusted to set the potentials difference of the balanced coils 1b, 3b of the input and output sides optionally. Then the potential difference changes the level and direction of the bias current flowing to diodes 5, 5... to correct the impedance of the diodes 5, 5..., thereby correcting the level difference of two kinds of modulated signals caused at a modulated signal output terminal 4 to '0'.

8. 实用新型

JPS62139114U 失效
公开(公告)号：JPS62139114U
公开(公告)日：1987-09-02
申请号：JP2490786
申请日：1986-02-21
IPC分类号： H03C1/58 , H03C7/02 , H04N5/40

9. 实用新型

JPS62133414U 失效
公开(公告)号：JPS62133414U
公开(公告)日：1987-08-22
申请号：JP2063686
申请日：1986-02-15
IPC分类号： H03C1/58 , H03B5/12

10. 实用新型

JPS61195108U 失效
公开(公告)号：JPS61195108U
公开(公告)日：1986-12-05
申请号：JP7702885
申请日：1985-05-23
IPC分类号： H03C1/54 , H03C1/58

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