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31 条记录 (耗时 0.026 秒)

    Diode compensation circuit including two series and one parallel resonance points
    1.
    发明授权
    Diode compensation circuit including two series and one parallel resonance points 失效
    二极管补偿电路包括两个串联和一个并联谐振点

    公开(公告)号：US06496083B1

    公开(公告)日：2002-12-17

    申请号：US09242139

    申请日：1999-02-03

    申请人： Hiroshi Kushitani ,  Naoki Yuda ,  Hiroshi Takahashi ,  Makoto Fujikawa

    发明人： Hiroshi Kushitani ,  Naoki Yuda ,  Hiroshi Takahashi ,  Makoto Fujikawa

    IPC分类号： H03H746

    CPC分类号： H01P1/15

    摘要： The present invention aims to realize, in regard to a high frequency switch used for a mobile communication apparatus such as a portable telephone or the like, a dual band switch having simple structure and changeable to ON and OFF states in two bands. For realizing the aim, the present invention provide a dual band switch comprising a series circuit of a PIN diode (101) and its compensation circuit (102), and, the compensation circuit (102) is formed with a circuit having at least two series resonance points and one parallel resonance point. The above structure allows the impedance of the compensation circuit, which is capacitive in low frequency close to a direct current, to be inductive after undergoing the first series resonance point, whereby the parasitic capacity of the diode is canceled in the first band, and also to be inductive again after undergoing the parallel resonance point and the following series resonance point, whereby the parasitic capacity of the PIN diode is canceled in the second band.

    摘要翻译： 本发明旨在实现对于诸如便携式电话等的移动通信装置所使用的高频开关，具有两个结构简单且可变为两个频带的导通和截止状态的双频带开关。 为了实现该目的，本发明提供一种包括PIN二极管（101）及其补偿电路（102）的串联电路的双频带开关，并且补偿电路（102）形成有具有至少两个串联 共振点和一个并联谐振点。 上述结构允许在经历第一串联谐振点之后，低频接近直流电容的补偿电路的阻抗为电感，从而在第一频带中消除二极管的寄生电容，并且还 在经历并联谐振点和随后的串联谐振点之后再次感应，由此PIN二极管的寄生电容在第二频带中被消除。

    Matching circuit chip, filter with matching circuit, duplexer and cellular phone
    4.
    发明授权
    Matching circuit chip, filter with matching circuit, duplexer and cellular phone 有权
    匹配电路芯片，带匹配电路的滤波器，双工器和手机

    公开(公告)号：US06326863B1

    公开(公告)日：2001-12-04

    申请号：US09215132

    申请日：1998-12-18

    申请人： Hiroshi Kushitani ,  Toru Yamada ,  Naoki Yuda ,  Toshio Ishizaki ,  Hideaki Nakakubo ,  Makoto Fujikawa

    发明人： Hiroshi Kushitani ,  Toru Yamada ,  Naoki Yuda ,  Toshio Ishizaki ,  Hideaki Nakakubo ,  Makoto Fujikawa

    IPC分类号： H01P512

    CPC分类号： H01P1/2135 ,  H01P1/2039 ,  H01P5/02

    摘要： The present matching circuit chip has an integrated shape comprising a first transmission line, a second transmission line and a third transmission line, wherein one end of the first transmission line, one end of the second transmission line and one end of the third transmission line are connected to one another, a first filter connection terminal is connected to the other end of the first transmission line, an antenna terminal is connected to the other end of the second transmission line, and a second filter connection terminal is connected to the other end of the third transmission line, whereby the second transmission line converts the characteristic impedances of the first and third transmission lines so that the impedance matching between the antenna terminal and the first filter connection terminal can be attained, and so that the impedance matching between the antenna terminal and the second filter connection terminal can be attained.

    摘要翻译： 本匹配电路芯片具有包括第一传输线，第二传输线和第三传输线的集成形状，其中第一传输线的一端，第二传输线的一端和第三传输线的一端为 彼此连接，第一过滤器连接端子连接到第一传输线的另一端，天线端子连接到第二传输线的另一端，第二滤波器连接端子连接到第二传输线的另一端 第三传输线，由此第二传输线转换第一和第三传输线的特性阻抗，使得可以获得天线端子和第一滤波器连接端子之间的阻抗匹配，并且使得天线端子之间的阻抗匹配 并且可以实现第二过滤器连接端子。

    Low-pass filter with directional coupler and cellular phone
    6.
    发明授权
    Low-pass filter with directional coupler and cellular phone 失效
    带定向耦合器和蜂窝电话的低通滤波器

    公开(公告)号：US6150898A

    公开(公告)日：2000-11-21

    申请号：US952008

    申请日：1998-01-08

    申请人： Hiroshi Kushitani ,  Naoki Yuda ,  Yoshikuni Fujihashi ,  Koji Hashimoto

    发明人： Hiroshi Kushitani ,  Naoki Yuda ,  Yoshikuni Fujihashi ,  Koji Hashimoto

    IPC分类号： H01P5/18 ,  H01P1/203 ,  H04B1/04

    CPC分类号： H01P5/185

    摘要： An integrated component providing the function of both a conventional directional coupler and a low-pass filter having two attenuation poles at a specified frequency band without changing the line length. Stub lines are connected to both ends of a main transmission line of a directional coupler. A frequency of the attenuation poles is adjustable by characteristic impedance, terminating conditions, and line length of the stub lines.

    摘要翻译： PCT No.PCT / JP97 / 00815 Sec。 371日期1998年1月8日 102（e）日期1998年1月8日PCT 1997年3月14日PCT公布。 WO97 / 36341 PCT出版物 日期1997年10月2日提供常规定向耦合器和具有在指定频带具有两个衰减极点的低通滤波器的功能的集成部件，而不改变线路长度。 短截线连接到定向耦合器的主传输线的两端。 衰减极的频率可通过特征阻抗，终止条件和短线的线路长度来调节。

    Stripline resonator filter including cooperative conducting cap and film
    7.
    发明授权
    Stripline resonator filter including cooperative conducting cap and film 失效
    带状谐振器滤波器，包括合作导电盖和薄膜

    公开(公告)号：US5489881A

    公开(公告)日：1996-02-06

    申请号：US244506

    申请日：1994-05-31

    申请人： Naoki Yuda ,  Hiroshi Takahashi ,  Takayoshi Ishikawa ,  Thuyoshi Himori ,  Tomoaki Ieda

    发明人： Naoki Yuda ,  Hiroshi Takahashi ,  Takayoshi Ishikawa ,  Thuyoshi Himori ,  Tomoaki Ieda

    IPC分类号： H01P1/203 ,  H01P1/20

    CPC分类号： H01P1/20345 ,  H01P1/203 ,  Y10T29/42 ,  Y10T29/435

    摘要： The present invention relates to a filter employed in a radio communication apparatus and has as an object to prevent characteristics of the filter from degradation by increasing unloaded Q of strip line resonators of the filter. For achieving the above object, the invention provides a filter which comprises a substrate (4) having first and second strip lines (5), (6) formed on a top surface and mutually coupled through an electromagnetic field and an earth pattern (2) on a bottom surface, respectively, a dielectric layer (8) laminated on the top surface of the substrate and having capacitor patterns (9), (10) formed on a top surface thereof in opposition to the aforementioned first and second strip lines (5), (6), and a metal cap (1) fitted over the dielectric layer (8) having an electrically conductive surface at least on one of top and bottom surfaces, and an electrically conductive film formed on a portion of an outer peripheral surface of the aforementioned substrate (4) and connected to the earth pattern (2) on the bottom surface thereof, wherein at least a portion of an outer periphery of the metal cap (1) is led downwardly toward the electrically conductive film, and the portion led downwardly is connected to the electrically conductive film.

    摘要翻译： PCT No.PCT / JP93 / 01467 Sec。 371日期1994年5月31日 102（e）日期1994年5月31日PCT提交1993年10月13日PCT公布。 第WO94 / 09528号公报 日本1994年4月28日。本发明涉及无线电通信装置中使用的滤波器，其目的是通过增加滤波器的带状线谐振器的无载Q来防止滤波器的特性劣化。 为了实现上述目的，本发明提供了一种滤波器，其包括具有形成在顶表面上并通过电磁场相互耦合的第一和第二带状线（5），（6）的基板（4）和地线图案（2） 在底面上分别具有叠层在基板的顶表面上的电介质层（8），并且具有与上述第一和第二带状线（5）相对的形成在其顶表面上的电容器图案（9），（10） ），（6）和金属盖（1），所述金属盖（1）装配在所述电介质层（8）上，所述金属盖（1）具有在顶表面和底表面中的至少一个上具有导电表面的导电膜，以及形成在外周表面 的上述基板（4），并且在其底面与地线图案（2）连接，其中金属盖（1）的外周的至少一部分朝向导电膜向下引导， 领先下来是连接 导电膜。

    Method of manufacturing a filter by forming strip lines on a substrate and dividing the substrate
    8.
    发明授权
    Method of manufacturing a filter by forming strip lines on a substrate and dividing the substrate 失效
    通过在基板上形成带状线并分割基板来制造滤光器的方法

    公开(公告)号：US5832578A

    公开(公告)日：1998-11-10

    申请号：US561860

    申请日：1995-11-22

    申请人： Naoki Yuda ,  Hiroshi Takahashi ,  Takayoshi Ishikawa ,  Thuyoshi Himori ,  Tomoaki Ieda

    发明人： Naoki Yuda ,  Hiroshi Takahashi ,  Takayoshi Ishikawa ,  Thuyoshi Himori ,  Tomoaki Ieda

    IPC分类号： H01P1/203 ,  H04R17/00

    CPC分类号： H01P1/20345 ,  H01P1/203 ,  Y10T29/42 ,  Y10T29/435

    摘要： The present invention relates to a filter employed in a radio communication apparatus and has as an object to prevent characteristics of the filter from degradation by increasing unloaded Q of strip line resonators of the filter. For achieving the above object, the invention provides a filter which comprises a substrate (4) having first and second strip lines (5), (6) formed on a top surface and mutually coupled through an electromagnetic field and an earth pattern (2) on a bottom surface, respectively, a dielectric layer (8) laminated on the top surface of the substrate and having capacitor patterns (9), (10) formed on a top surface thereof in opposition to the aforementioned first and second strip lines (5), (6), and a metal cap (1) fitted over the dielectric layer (8) having an electrically conductive surface at least on one of top and bottom surfaces, and an electrically conductive film formed on a portion of an outer peripheral surface of the aforementioned substrate (4) and connected to the earth pattern (2) on the bottom surface thereof, wherein at least a portion of an outer periphery of the metal cap (1) in led downwardly toward the electrically conductive film, and the portion led downwardly is connected to the electrically conductive film.

    摘要翻译： 本发明涉及一种在无线电通信装置中使用的滤波器，其目的是通过增加滤波器的带状线谐振器的无负载Q来防止滤波器的特性劣化。 为了实现上述目的，本发明提供了一种滤波器，其包括具有形成在顶表面上并通过电磁场相互耦合的第一和第二带状线（5），（6）的基板（4）和地线图案（2） 在底面上分别具有叠层在基板的顶表面上的电介质层（8），并且具有与上述第一和第二带状线（5）相对的形成在其顶表面上的电容器图案（9），（10） ），（6）和金属盖（1），所述金属盖（1）装配在所述电介质层（8）上，所述金属盖（1）具有在顶表面和底表面中的至少一个上具有导电表面的导电膜，以及形成在外周表面 的上述基板（4）的底面上的与地线图案（2）连接的金属盖（1）的外周的至少一部分朝向导电膜向下方引导， 领先下来是连接 导电膜。

    Antenna device
    10.
    发明授权
    Antenna device 失效

    公开(公告)号：US06836248B2

    公开(公告)日：2004-12-28

    申请号：US10276262

    申请日：2003-04-22

    申请人： Susumu Fukushima ,  Naoki Yuda

    发明人： Susumu Fukushima ,  Naoki Yuda

    IPC分类号： H01Q138

    CPC分类号： H01Q13/085 ,  H01Q1/242 ,  H01Q5/371 ,  H01Q5/378 ,  H01Q9/0421 ,  H01Q9/0442

    摘要： A small antenna device having a wide frequency band suitable for being built in mobile communications apparatuses. This antenna device includes a planar radiating element (radiating plate) and a grounding plate provided in parallel to and facing the radiating plate. A feeding line is disposed at approximately the end center of the radiating plate, and supplies high-frequency signals. A shorting portion shorts the radiating plate and grounding plate at near the feeding line. A slit is provided at an end face of the radiating plate approximately opposing the feeding line to form two resonators. A coupling level between two resonators is optimized by adjusting the shape or dimensions of this slit, or loading a reactance element or conductive plate on this slit. Accordingly, a small and short antenna with a preferred characteristic is achieved.