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9 条记录 (耗时 0.031 秒)

    Antenna switching apparatus for selectively connecting antenna to transmitter or receiver
    4.
    发明授权
    Antenna switching apparatus for selectively connecting antenna to transmitter or receiver 失效
    天线切换装置，用于选择性地将天线连接到发射机或接收机

    公开(公告)号：US5442812A

    公开(公告)日：1995-08-15

    申请号：US307490

    申请日：1994-09-16

    申请人： Toshio Ishizaki ,  Hideaki Nakakubo ,  Hiroaki Kosugi ,  Kimio Aizawa ,  Shogo Iizuka

    发明人： Toshio Ishizaki ,  Hideaki Nakakubo ,  Hiroaki Kosugi ,  Kimio Aizawa ,  Shogo Iizuka

    IPC分类号： H01P1/15 ,  H04B1/46

    CPC分类号： H01P1/15

    摘要： An antenna switching apparatus for selectively connecting an antenna to either a transmitter for transmitting a transmitting signal having a transmitting frequency, or a receiver for receiving a receiving signal having a receiving frequency, which is different from the transmitting frequency, includes an antenna terminal electrically connected to the antenna; a transmitting terminal electrically connected to the transmitter, and a receiving terminal electrically connected to the receiver. A receiving filter for passing a receiving signal therethrough is electrically connected between the antenna terminal and the receiving terminal. An impedance adjusting element is electrically connected to an input end of the receiving filter, and has an element value such that an impedance when seen from the antenna terminal looking toward the receiving filter becomes substantially infinity at the transmitting frequency. Further, a switching device is electrically connected between the antenna terminal and the transmitting terminal, wherein it is turned on or off in response to a control signal.

    摘要翻译： 一种天线切换装置，用于将天线选择性地连接到用于发送具有发射频率的发射信号的发射机或用于接收与发射频率不同的具有接收频率的接收信号的接收机，所述天线切换装置包括电连接的天线端子 到天线 电连接到发射机的发射终端和电连接到接收机的接收终端。 用于使接收信号通过的接收滤波器电连接在天线端子和接收端子之间。 阻抗调整元件电连接到接收滤波器的输入端，并且具有使得从天线端子看向接收滤波器看到的阻抗在发射频率处变得基本无穷大的元件值。 此外，开关装置电连接在天线端子和发射端子之间，其中响应于控制信号而被接通或断开。

    Dielectric filters with a single through-hole
    5.
    发明授权
    Dielectric filters with a single through-hole 失效
    具有单孔的电介质过滤器

    公开(公告)号：US5166649A

    公开(公告)日：1992-11-24

    申请号：US730671

    申请日：1991-07-16

    申请人： Kimio Aizawa ,  Takashi Fujino ,  Toshio Ishizaki

    发明人： Kimio Aizawa ,  Takashi Fujino ,  Toshio Ishizaki

    IPC分类号： H01P1/205 ,  H01P5/08

    CPC分类号： H01P1/2056

    摘要： This invention offers a compact and high performance dielectric filter consisting of a quarter wavelength dielectric body provided with a through-hole between the upper and lower surfaces of the dielectric body, electrodes deposited on external and lower surfaces of the dielectric body, and at least two independent electrodes provided on an internal surface of the through-hole, extending to the upper and lower surfaces of the dielectric body. With this dielectric filter construction, the through-hole performs the role of constructing plural quarter wavelength resonators and performs, at the same time, the role of adjusting the coupling between the plural resonators, thus yielding a compact dielectric filter of simple construction.

    Coaxial dielectric resonator having a groove therein and method of producing such coaxial dielectric resonator
    6.
    发明授权
    Coaxial dielectric resonator having a groove therein and method of producing such coaxial dielectric resonator 失效
    具有它的同轴电介质谐振器和产生这种同轴电介质谐振器的方法

    公开(公告)号：US5109207A

    公开(公告)日：1992-04-28

    申请号：US621812

    申请日：1990-12-04

    申请人： Kimio Aizawa ,  Masaki Kita

    发明人： Kimio Aizawa ,  Masaki Kita

    IPC分类号： H01P1/212 ,  H01P1/205 ,  H01P7/04 ,  H01P11/00

    CPC分类号： H01P7/04 ,  H01P1/2056 ,  H01P11/007

    摘要： A dielectric resonator includes a resonator body having a groove formed in its upper surface adjacent to an outer periphery of a through hole formed through the body. An electrically-conductive film on the inner surface of the groove is electrically connected to an electrically-conductive film formed on the inner peripheral surface of the through hole, via an electrically-conductive film formed on a portion of the upper surface of the body lying between the groove and the through hole. The groove having the electrically-conductive film formed on its inner surface enables the length of the body to be reduced and the overall resonator to have a reduced size.

    High-frequency circuit board trace crossing and electronic component therefor
    7.
    发明授权
    High-frequency circuit board trace crossing and electronic component therefor 失效
    高频电路板走线及其电子元器件

    公开(公告)号：US5907265A

    公开(公告)日：1999-05-25

    申请号：US927517

    申请日：1997-09-11

    申请人： Toru Sakuragawa ,  Naoki Yuda ,  Kimio Aizawa ,  Ikuo Ota ,  Hideki Nanba

    发明人： Toru Sakuragawa ,  Naoki Yuda ,  Kimio Aizawa ,  Ikuo Ota ,  Hideki Nanba

    IPC分类号： H01P3/08 ,  H05K3/22 ,  H01P5/12

    CPC分类号： H01P3/081 ,  H01P3/08 ,  H05K3/222

    摘要： An inexpensive high-frequency circuit device and its electronic component which allows two traces or lines to cross on the same surface without affecting other circuits characteristics. At least one of the lines is a high-frequency signal line. The high-frequency circuit device includes an insulated circuit board having a main surface, a first line disposed on the main surface of the circuit board, a second line disposed on the main surface of the circuit board crossing the first line with an electrically unconnected section at an intersection area of the two lines, a grounding terminal disposed on the main surface of the circuit board, a chip-type electronic component mounted on the main surface of the circuit board which has an insulating body and a line disposed on the insulating body for electrically bridging the electrically unconnected section in the second line, and a grounding layer disposed between the line on the electronic component and the first line which is electrically connected to the grounding terminal. The electronic component mounted on the above circuit board electrically bridges the unconnected section in the second line.

    摘要翻译： 一种廉价的高频电路器件及其电子部件，允许两条迹线或线路在同一表面上交叉而不影响其他电路特性。 至少有一条线是高频信号线。 高频电路装置包括具有主表面的绝缘电路板，​​设置在电路板的主表面上的第一线，设置在与第一线交叉的电路板的主表面上的第二线，该第二线具有电连接部分 在两条线的交叉区域，设置在电路板的主表面上的接地端子，安装在电路板的主表面上的芯片型电子部件，其具有绝缘体和设置在绝缘体上的线 用于电气桥接第二线路中的未连接部分，以及布置在电子部件上的线路和电连接到接地端子的第一线路之间的接地层。 安装在上述电路板上的电子部件将第二线路中的未连接部分电桥。

    Microwave stripline resonator including a dielectric substrate having a depression
    8.
    发明授权
    Microwave stripline resonator including a dielectric substrate having a depression 失效
    微波条纹共振器，包括一个具有凹陷的介质基板

    公开(公告)号：US5162761A

    公开(公告)日：1992-11-10

    申请号：US727417

    申请日：1991-07-09

    申请人： Masaki Kita ,  Kimio Aizawa

    发明人： Masaki Kita ,  Kimio Aizawa

    IPC分类号： H01P7/08

    CPC分类号： H01P7/082 ,  H01P7/084

    摘要： This invention relates to a compact and high performance microwave stripline resonator consisting of a dielectric substrate provided with a strip electrode and a depression coated with an electrode which is connected to an end of the strip electrode provided on one of the surfaces of the dielectric substrate and a grounding electrode provided on the other surface of the dielectric substrate, and the grounding electrode is connected to the other end of said strip electrode. With this dielectric resonator construction, the characteristic impedance of the strip electrode and the characteristic impedance of the electrode coated on the depression are made different. As a result of this, the length of microwave stripline can be shortened without sacrificing the Q of the resonator. This is highly effective to realize compact resonators.