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1. 发明专利

JP2005130296A Receiver and receiving method of call signal 审中-公开
标题翻译：呼叫信号的接收和接收方法
公开(公告)号：JP2005130296A
公开(公告)日：2005-05-19
申请号：JP2003365177
申请日：2003-10-24
申请人： Fujitsu Ltd , National Institute Of Information & Communication Technology , 富士通株式会社 , 独立行政法人情報通信研究機構
发明人： INOUE TAKESHI , NAWA TOSHIHIKO , SHIGAKI MASAFUMI , YAMAMOTO SHINICHI , KOZONO SHINICHI
IPC分类号： H04L7/08 , H04B7/26
摘要： PROBLEM TO BE SOLVED: To shorten the time required for link establishment, to easily adjust trade-off between enhancement of detection precision and generation of misdetections, to promote miniaturization, cost reduction of device, to detect a signal such as a call signal and to correct carrier frequency deviation, with respect to call termination deciding technology under radio environment, in which the reception status of the signal is poor. SOLUTION: In a receiving method of the call signal in a receiver 8 which receives a radio frame, a receiver 8 detects call termination of the call signal, based on a non-modulated signal included in the frame, decides the presence/absence of synchronous word data expressing frame timing, added after the non-modulated signal and decides whether the frame is addressed to a self station or addressed to the other station, based on identifier data indicating a transmitting origin device and a transmitting destination device included in the frame. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了缩短链路建立所需的时间，能够在提高检测精度和产生误报之间轻松调整权衡，促进设备的小型化，降低成本，检测诸如呼叫的信号对无线电环境中的呼叫终止决定技术进行信号和纠正载波频率偏差，其中信号的接收状态较差。解决方案：接收机8在接收无线帧的接收机8的接收方式中，基于帧中包含的未调制信号，检测呼叫信号的呼叫终止，决定存在/ 不存在表示帧定时的同步字数据，在未调制信号之后添加，并且基于指示发送源设备和发送目的地设备的标识符数据来确定该帧是寻址到自己的站还是寻址到另一个站框架。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2004096471A Dielectric waveguide and manufacturing method therefor 有权
标题翻译：电介质波导及其制造方法
公开(公告)号：JP2004096471A
公开(公告)日：2004-03-25
申请号：JP2002255644
申请日：2002-08-30
申请人： Fujitsu Ltd , 富士通株式会社
发明人： YAMANAKA KAZUNORI , AKASEGAWA AKIHIKO , SHIGAKI MASAFUMI , NAKAZAWA ISAO
IPC分类号： H01P1/02 , H01P3/12
CPC分类号： H01P1/022 , H01P3/12
摘要： PROBLEM TO BE SOLVED: To provide a dielectric waveguide, using a copper oxide high-temperature superconductor, which is small-sized and for obtaining low loss (high no-load Q) and a manufacturing method therefor. SOLUTION: This dielectric waveguide has a 1st single-crystal magnesium oxide block 101 which has a surface which is a (001), (100), or (010) plane and a 1st copper oxide superconductor film 104 which is formed on the surface while having its (c)-axial crystal aligned at right angle to the surface. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种使用小型化并获得低损耗（高空载Q）的氧化铜高温超导体的电介质波导及其制造方法。解决方案：该电介质波导具有第一单晶氧化镁块101，其具有表面为（001），（100）或（010）面的第一氧化铜超导体膜104，其形成于其表面同时具有其（c）轴晶体与表面成直角对准。版权所有（C）2004，JPO

3. 发明专利

JP2004072357A Device and method for monitoring high frequency circuit 有权
公开(公告)号：JP2004072357A
公开(公告)日：2004-03-04
申请号：JP2002228121
申请日：2002-08-06
申请人： Fujitsu Ltd , 富士通株式会社
发明人： YAMANAKA KAZUNORI , NAKAZAWA ISAO , SHIGAKI MASAFUMI , KAI MANABU
IPC分类号： H01P5/08 , H01P5/18
CPC分类号： H01P5/183
摘要： PROBLEM TO BE SOLVED: To reduce loss due to the formation of a circuit for monitoring a high frequency circuit as much as possible and to realize a compact monitoring device.
SOLUTION: A monitoring high frequency signal is spatially propagated from an input side combination circuit 1 to a high frequency circuit 3 to be monitored as a mixed signal mixed with an inputted electric signal. Prescribed processing is applied to the inputted mixed signal by the high frequency circuit 3 which is a monitoring target to a frequency response to the electric signal and the processed mixed signal is outputted. An output side combination circuit 4 receives a spatially propagated monitoring high frequency signal from the mixed signal inputted from the high frequency circuit 3.
COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2004297151A Antenna coupling module 有权
公开(公告)号：JP2004297151A
公开(公告)日：2004-10-21
申请号：JP2003083141
申请日：2003-03-25
申请人： Fujitsu Ltd , 富士通株式会社
发明人： YAMANAKA KAZUNORI , NAKAZAWA ISAO , SHIGAKI MASAFUMI
IPC分类号： H01L39/00 , H01L39/22 , H01Q1/36 , H01Q9/04 , H01Q13/08
CPC分类号： H01Q9/0457 , H01Q1/364
摘要： PROBLEM TO BE SOLVED: To provide an antenna coupling module for carrying out electromagnetic field coupling between a planar antenna and a planar oxide superconducting high frequency circuit wherein the antenna effective area is not reduced and the signal loss is reduced to the utmost in coupling. SOLUTION: The antenna coupling module is provided, which is characterized in that a board for configuring the planar superconducting high frequency circuit is perpendicularly placed to an element plane of the planar antenna so as to cause the electromagnetic coupling between the planar antenna and the superconducting high frequency circuit. COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2004282253A Low distortion microwave circuit 有权
公开(公告)号：JP2004282253A
公开(公告)日：2004-10-07
申请号：JP2003068633
申请日：2003-03-13
申请人： Fujitsu Ltd , National Institute Of Information & Communication Technology , 富士通株式会社 , 独立行政法人情報通信研究機構
发明人： SHIGAKI MASAFUMI , MORIKAWA SHIGEHISA
IPC分类号： H03F1/32 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To provide a microwave circuit for properly eliminating distortion in a small circuit scale configuration.
SOLUTION: A main signal is applied to an input terminal 801 in the low distortion microwave circuit, an amplifier 804 amplifies the main signal, and the amplified main signal is outputted from the output terminal 808. A frequency converter 850, a fixed band pass filter 852, and a variable frequency oscillator 861 detect the size of a signal in a prescribed frequency region of the signal branched by a coupler 831. Further, a controller 870 controls the amplitude / phase revision circuits 810, 820 on the basis of the output of a filter output terminal 853 to eliminate the noise cased by the nonlinear distortion in the amplifier 804.
COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2001053510A HIGH-FREQUENCY CIRCUIT 失效
公开(公告)号：JP2001053510A
公开(公告)日：2001-02-23
申请号：JP22193699
申请日：1999-08-05
申请人： FUJITSU LTD
发明人： SHIGAKI MASAFUMI
IPC分类号： H01P1/212 , H01P5/02 , H03F3/60
摘要： PROBLEM TO BE SOLVED: To surely provide a short-circuited state with respect to the frequency doubled waves of fundamental waves in a high frequency circuit for efficiently processing the fundamental waves. SOLUTION: An input matching circuit 1 is connected to the input terminal of the semiconductor element 2 such as a field effect transistor and a bipolar transistor, and an output matching circuit 5 is connected to an output terminal. One end of the line 3 of the length of about λ/4 is connected to the output terminal of the semiconductor element 2, and the other end of the line 3 of the length of about λ/4 is grounded via a capacitor 4. Viewing from the output terminal of the semiconductor element 2, it is open to the fundamental waves and is short-circuited to the fregueny doubled waves of the fundamental waves at one end of the line 3 of the length of about λ/4.

7. 发明专利

JP2000223960A DISTORTION COMPENSATOR 失效
公开(公告)号：JP2000223960A
公开(公告)日：2000-08-11
申请号：JP2340599
申请日：1999-02-01
申请人： FUJITSU LTD
发明人： SHIGAKI MASAFUMI , SASAKI TAKAO
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To facilitate adjustment of a distortion compensator with simple structure when distortion of a power amplifier is compensated. SOLUTION: The distortion compensator is structured by connecting an input terminal 4 with a gate G of a field-effect transistor 1, simultaneously impressing gate voltage Vg on the gate via a bias line 3, connecting power supply voltage Vcc with a drain D via a load circuit like a resistor (R) 2, etc., connecting the drain D with an output terminal 5 and setting the bias point in a non-saturated area of drain current of the field effect transistor 1. And a trailing power amplifier is connected with the output terminal 5.

8. 发明专利

JPH06152243A EXTRA-HIGH FREQUENCY OSCILLATOR 失效
公开(公告)号：JPH06152243A
公开(公告)日：1994-05-31
申请号：JP29970092
申请日：1992-11-10
申请人： FUJITSU LTD , UCHU TSUSHIN KISO GIJUTSU KENK
发明人： SHIGAKI MASAFUMI , YAMAMOTO TETSUO , IWATSUKI MASANORI , HONGO HIRONOBU , ADACHI AKIFUMI
IPC分类号： H03B5/18
摘要： PURPOSE:To reduce the number of constituting parts with respect to the ultra- high frequency oscillator used in a microwave and millimeter wave communication equipment. CONSTITUTION:An oscillating means which has an oscillating element and a resonator having a frequency (f) and is oscillated with the frequency (f) and an amplifying means 3 which is operated with a frequency f/2 are provided, and such loop is formed that the output of the oscillating means is applied to the input side of the amplifying means and the output of the amplifying means is applied to the input side of the oscillating means, and the signal component having the frequency f/2 is taken out from the output of the oscillating means and is applied to the oscillating means through the amplifying means.

9. 发明专利

JPS637648A MICROWAVE MONOLITHIC INTEGRATED CIRCUIT 失效
公开(公告)号：JPS637648A
公开(公告)日：1988-01-13
申请号：JP15116986
申请日：1986-06-27
申请人： FUJITSU LTD
发明人： IWAKUNI MIKIO , SHIGAKI MASAFUMI , NAKAMURA TAKAHARU
IPC分类号： H01L27/095 , H01L21/82 , H01L21/822 , H01L27/04 , H01L27/118 , H01L29/80
摘要： PURPOSE:To obtain many kinds of integrated circuits, by forming active elements such as FETs, diodes and the like in an array state on a compound semiconductor substrate, covering the upper surface with an insulating film, and forming a passive element circuit and an interconnection pattern at arbitrary positions on the insulating film. CONSTITUTION:At first, active elements 12 are formed on a semi-insulating compound semiconductor substrate 10 in an array state. Then an insulating film 14 is formed so as to cover the active element array. Thereafter, a passive element circuit 16 and an interconnection pattern 18 are formed at arbitrary positions on the insulating film 14. Thus, a master slice type microwave monolithic integrated circuit is formed. Since the passive element circuit and the interconnection pattern can be formed on the insulating film 14 in this way, the kinds of integrated circuits, which can be formed without restriction on circuit design, and the design freedom can be improved to a large extent.

10. 发明专利

JPS62208703A CONSTANT CURRENT CIRCUIT 失效
公开(公告)号：JPS62208703A
公开(公告)日：1987-09-14
申请号：JP4956386
申请日：1986-03-08
申请人： FUJITSU LTD
发明人： NAKAMURA TAKAHARU , SHIGAKI MASAFUMI
IPC分类号： G05F3/24 , H03F3/34 , H03F3/343 , H03F3/347 , H03F3/45
摘要： PURPOSE:To utilize the titled circuit as a stable constant current source for a GaAs semiconductor device or the like by connecting the 1st depletion transistor (TR) whose gate and source (at least one each) are connected in parallel with the 2nd depletion TR and at least one series circuit. CONSTITUTION:A normal-on depletion TR 21 and a series circuit 22 are connected in parallel in the constant current circuit 2. The source and gate of the depletion TR 21 are connected. A normal-on depletion TR 22a and a resistive element 22B are connected in series in the series circuit 22 and the source of the TR 22a is connected to the gate via a resistive element. The gate width of the TR 21 is made narrower than the gate width of the TR 22a. Thus, the current capacity of the TR 21 is limited and the constant current characteristic is improved as the entire circuit as shown in curve C1.

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