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    • 1. 发明专利
    • Electronic tuning circuit
    • 电子调谐电路
    • JPS61108204A
    • 1986-05-26
    • JP22932884
    • 1984-10-31
    • Fujitsu Ltd
    • NISHIDA HARUKIOSAWA ZENICHI
    • H03C3/22H03C7/02
    • PURPOSE: To keep the impedance viewing a voltage supply line from a voltage varactor element high by constituting a part of the voltage supply line with a resistive element so as to make a current hardly flow when the line is coupled with a dielectric resonator.
      CONSTITUTION: The voltage supply circuit 12 consists of a resistive element 10 of 1/4 wavelength, a series connection of an open stub 8 of 1/4 wavelength to the element 10, and a choke connecting the connecting point between the said resistive element and the open stub 8 and a bias supply terminal. When the voltage supply line 12 and the dielectric resonator 1 are subject to magnetic field coupling as shown in one-dashed chain lines, since the coupled part is constituted with the resistive element, a current hardly flows. Then the coupling is loosened and the characteristic impedance of the voltage supply line 12 is not almost fluctuated, then high impedance is maintained. Further, a bias voltage is applied to a varactor diode 3 via the bias supply terminal, the choke 9 and the resistive element 10.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:为了通过用电阻元件构成电压供应线的一部分来保持阻抗从电压变容二极管元件高电压供应线,以便当线路与介质谐振器耦合时使电流几乎不流动。 构成:电压供给电路12由1/4波长的电阻元件10,1/4波长的开路短路8与元件10的串联连接构成,扼流圈连接所述电阻元件和 开路短线8和偏置电源端子。 当电压供给线路12和介质谐振器1如单点划线所示进行磁场耦合时,由于耦合部分由电阻元件构成,所以电流几乎不流动。 然后,耦合松动,并且电压供应线路12的特性阻抗几乎不发生波动,从而保持高阻抗。 此外,通过偏置电源端子,扼流圈9和电阻元件10将偏置电压施加到变容二极管3。
    • 2. 发明专利
    • ULTRA HIGH-FREQUENCY CIRCUIT CIRCULATOR
    • JPS6243903A
    • 1987-02-25
    • JP18298785
    • 1985-08-22
    • FUJITSU LTD
    • OSAWA ZENICHI
    • H01P1/387
    • PURPOSE:To miniaturize a carrier 40 and to reduce the transmission loss by arranging a magnet to a microstrip line side of a ferrite base. CONSTITUTION:The microstrip line 32 and a conductor film 33 are provided respectively to the front face and the rear face of the ferrite base 31, a magnet 35 is arranged to the microstrip line 32, a pole piece 34 is arranged to the conductor film 33 to constitute an ultra high-frequency circuit circulator thereby inserting the pole piece 34 to a prescribed position of the carrier 40 on which the circulator is mounted. Thus, a structure constituting a circulator 30 and mounted on the carrier 40 is adopted to select the width W3 of an excess thickness part 40b corresponding to a fitting hole 40a to the size ensuring a sufficient mechanical strength. Thus, the width W2 of the carrier 40 is selected the same as the width W1 of the base 31 so as to miniaturize the carrier 40 and reduce the transmission loss.
    • 3. 发明专利
    • MICROWAVE MODULE
    • JPS632406A
    • 1988-01-07
    • JP14585986
    • 1986-06-20
    • FUJITSU LTD
    • UNNO ISAMUASHIDA HIDEOOSAWA ZENICHI
    • H01L23/04H01L23/02H01L23/50H01P1/00H01P3/08H01P5/08H05K1/02H05K1/14
    • PURPOSE:To arrange terminals under a dispersed condition in corresponding to an increase in the number of terminals resulting from a circuit substarate made multi-functional and, at the same time, to prevent interference between the terminals and make this module applicable to a wide band, by providing a coaxial horizontal terminal on a side wall and coaxial vertical terminal on a bottom plate. CONSTITUTION:A box body base 31 is provided at the central part of a device box body 30 and the box body 30 is separated into an upper and lower chambers. A coaxial vertical terminal 16 is vertically provided on the bottom member of a metallic base 10 and connected with a lowfrequency circuit base substrate 33, on which a power source circuit, intermediate- frequency circuit, base-band circuit, etc., are formed. Moreover, a coaxial horizontal terminal 15 is provided through the side wall of the base 10 of this microwave module 20 under a condition where the terminal is soldered to a strip line 35 and connected with another adjacent module or a coaxial connnector 34. When the microwave line is connected with the terminal 15 and the lines other than the microwave line are connected with the coaxial vertical terminal 16 in such way, the terminals can be arranged in a dispersed state in corresponding to the increase of the number of terminals and, at the same time, interference between the terminals can be prevented and this module can be applied to a wide band.
    • 4. 发明专利
    • Mounting method of dielectric resonator
    • 电介质谐振器安装方法
    • JPS61123203A
    • 1986-06-11
    • JP23203584
    • 1984-11-02
    • Fujitsu Ltd
    • OSAWA ZENICHIITO ASAO
    • H01P7/10
    • H01P7/10
    • PURPOSE:To attain stability against temperature and to improve reliability by bonding a dielectric resonator unit on a base of a low dielectric constant thicker than a microwave integrated circuit (MIC) substrate adjacent to said substrate. CONSTITUTION:A microstrip line 2 is formed near one end of the MIC substrate 1 made of aluminum, the base 6 made of a low dielectric constant and a low thermal expansion coefficient material such as quartz glass, thicker than the MIC substrate 1 is bonded to a case 7 in a form to be contacted closely with the side face of the side end and a dielectric resonator 3 bonded with a supporting base 5 made of quartz glass is placed on the case 7. Through the constitution above, since the dielectric resonator 3 is held with a prescribed interval with an air gap to the microstrip line 2, both the thermal expansion coefficients are not a direct problem and the electromagnetic coupling between the both is adjusted easily.
    • 目的:通过将介质谐振器单元接合在比与所述衬底相邻的微波集成电路(MIC)衬底更厚的低介电常数的基底上,以获得对温度的稳定性并提高可靠性。 构成:在由铝构成的MIC基板1的一端附近形成有微带线2,将由低介电常数构成的基座6和比MIC基板1厚的石英玻璃等低热膨胀系数材料接合到 将与侧端侧面紧密接触的形式的壳体7和与石英玻璃制成的支撑基座5接合的介质谐振器3放置在壳体7上。通过上述结构,由于介质谐振器3 以规定的间隔保持与微带线2的气隙,两个热膨胀系数都不是直接的问题,并且两者之间的电磁耦合容易调整。
    • 5. 发明专利
    • Method for constituting dielectric filter
    • 用于构成电介质滤波器的方法
    • JPS6170801A
    • 1986-04-11
    • JP19300684
    • 1984-09-14
    • Fujitsu Ltd
    • OSAWA ZENICHI
    • H01P11/00H01P1/20H01P1/208H01P7/10
    • H01P1/2084
    • PURPOSE:To decrease the cost by bonding and fixing a high dielectric plate onto a low dielectric base in advance and cutting the high dielectric plate so as to obtain a cubic dielectric resonator having a predetermined interval and dimension by means of a cutter. CONSTITUTION:A plate 12 made of a high dielectric constant material is bonded and fixed on a supporting base 11 made of a low dielectric constant material. Then a cutter cutting a material with accuracy in the order of micrones such as dicing saw to cut the plate 12 into a prescribed size. Parts 13-15 are parts acting like a dielectric resonator and the size and interval are decided values. The dielectric resonator is assembled in a case 10 and metallic rods 6, 7 as coupling elements connected with coaxial plugs 8, 9 are arranged and fixed near dielectric resonators 13, 15.
    • 目的:通过预先将高电介质板接合固定到低电介质基底上并切割高电介质板以便通过切割器获得具有预定间隔和尺寸的立方体介质谐振器,从而降低成本。 构成:由高介电常数材料制成的板12被固定在由低介电常数材料制成的支撑基座11上。 然后切割切割锯的精度为微米级的材料的切割器将切割板12切割成规定尺寸。 部件13-15是类似介质谐振器的部件,尺寸和间隔是决定的值。 介质谐振器组装在壳体10和金属杆6,7中,因为连接有同轴插头8,9的耦合元件被布置和固定在介质谐振器13,15附近。