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。

公开(公告)号：US06608534B2

公开(公告)日：2003-08-19

申请号：US09986674

申请日：2001-11-09

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： H01D1213

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.

公开(公告)号：US06608533B2

公开(公告)日：2003-08-19

申请号：US09918828

申请日：2001-08-01

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： H01P1213

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.

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。

公开(公告)号：US06366564B1

公开(公告)日：2002-04-02

申请号：US09077254

申请日：1998-05-26

申请人： Masahiro Hiraka ,  Hidenori Katsumura ,  Ryuichi Saito ,  Hiroshi Kushitani ,  Naoki Yuda ,  Shigeo Hurukawa ,  Suzushi Kimura

发明人： Masahiro Hiraka ,  Hidenori Katsumura ,  Ryuichi Saito ,  Hiroshi Kushitani ,  Naoki Yuda ,  Shigeo Hurukawa ,  Suzushi Kimura

IPC分类号： H04B156

CPC分类号： H04B1/52 ,  H01P1/2135 ,  H03H7/46 ,  H03H7/461 ,  H03H2007/386 ,  H04B1/005 ,  H04B1/406 ,  H04B1/48

摘要： A diplexer employed in mobile communications equipment such mobile phones which can divide signals into two channels with a simple configuration without interfering the other band. In this diplexer, an inductor 105 is connected between a &pgr;-type three-stage one polar low-pass filter 115 and a common terminal 113 as a first matching circuit, and a capacitor 106A is connected between a one polar band-pass filter 116 and a common terminal 113 as a second matching circuit so that interference with the other band can be prevented and the higher harmonics can be sufficiently attenuated with simple configuration.

摘要翻译： 在移动通信设备中使用的双工器，这种移动电话可以以简单的配置将信号分成两个信道，而不会干扰其他频带。 在该双工器中，电感器105连接在pi型三级一极极低通滤波器115和公共端113之间，作为第一匹配电路，电容器106A连接在一个极性带通滤波器116 以及作为第二匹配电路的公共端子113，从而可以防止与另一个频带的干扰，并且以简单的配置可以充分地衰减高次谐波。

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。

公开(公告)号：US06492886B1

公开(公告)日：2002-12-10

申请号：US09613554

申请日：2000-07-10

申请人： Hiroshi Kushitani ,  Toru Yamada ,  Makoto Fujikawa

发明人： Hiroshi Kushitani ,  Toru Yamada ,  Makoto Fujikawa

IPC分类号： H01P308

CPC分类号： H01P1/20345 ,  H01P1/2039 ,  H01P1/2135

摘要： A laminated filter comprising a plurality of resonator electrodes, an inter-resonator coupling capacitor electrode for coupling adjacent resonators, and two input/output coupling capacitor electrodes for coupling input/output terminals and the resonator electrodes. This provides a capacitor electrode for electrically connecting one side of the input/output terminals with a portion of the input/output coupling capacitor electrode, wherein the input/output coupling capacitor electrode and the capacitor electrode are a parallel circuit. This structure forms a parallel resonance circuit in the input/output terminal, to provide an additional attenuation pole besides an attenuation pole formed by electromagnetic coupling between the resonators and an inter-resonator capacitance, thereby realizing a laminated filter of a high attenuation. With this structure, a duplexer can be made using a plurality of the filters of this invention without requiring a phase-shifting circuit.

摘要翻译： 一种层叠滤波器，包括多个谐振器电极，用于耦合相邻谐振器的谐振器间耦合电容器电极和用于耦合输入/输出端子和谐振器电极的两个输入/输出耦合电容器电极。 这提供了用于将输入/输出端子的一侧电连接到输入/输出耦合电容器电极的一部分的电容器电极，其中输入/输出耦合电容器电极和电容器电极是并联电路。 该结构在输入/输出端子中形成并联谐振电路，除了由谐振器之间的电磁耦合形成的衰减极和谐振器间电容之外，还提供了另外的衰减极，从而实现了高衰减的叠层滤波器。 利用这种结构，可以使用本发明的多个滤波器来制作双工器，而不需要移相电路。

公开(公告)号：US20050062559A1

公开(公告)日：2005-03-24

申请号：US10940577

申请日：2004-09-14

申请人： Koji Seo ,  Tetsuro Shimamura ,  Toru Sakuragawa ,  Hiroshi Kushitani ,  Yuki Satoh

发明人： Koji Seo ,  Tetsuro Shimamura ,  Toru Sakuragawa ,  Hiroshi Kushitani ,  Yuki Satoh

IPC分类号： H03H9/02 ,  H03H9/05 ,  H03H9/10 ,  H03H9/145 ,  H03H9/64

CPC分类号： H03H9/1071 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/48237 ,  H01L2224/49109 ,  H01L2924/16195 ,  H03H9/02913 ,  H03H9/058 ,  H01L2924/00014

摘要： A surface acoustic wave filter with little electromagnetic coupling between wires and improved attenuation characteristics is provided. This surface acoustic wave filter comprises: a package having a concavity in the shape of stairs made by laminating dielectrics, a surface acoustic wave element provided on the bottom face of the concavity, a plurality of wires for connecting between a plurality of electrodes provided on the surface of the surface acoustic wave element and a plurality of electrodes provided on one same plane portion of the stairs of the package in correspondence to a plurality of electrodes, and a dummy wire provided between the wires.

摘要翻译： 提供了一种具有很少的电线耦合和改进的衰减特性的表面声波滤波器。 该表面声波滤波器包括：具有通过层叠电介质的楼梯形状的凹部的封装，设置在凹部的底面上的表面声波元件，用于连接设置在凹部上的多个电极之间的多根导线 表面声波元件的表面和与多个电极相对应地设置在封装的楼梯的同一平面部分上的多个电极，以及设置在电线之间的虚拟线。

公开(公告)号：US06304156B1

公开(公告)日：2001-10-16

申请号：US09379766

申请日：1999-08-24

申请人： Toshio Ishizaki ,  Atsushi Sasaki ,  Yuki Satoh ,  Hiroshi Kushitani ,  Hideaki Nakakubo ,  Toshiaki Nakamura ,  Kimio Aizawa ,  Takashi Fujino

发明人： Toshio Ishizaki ,  Atsushi Sasaki ,  Yuki Satoh ,  Hiroshi Kushitani ,  Hideaki Nakakubo ,  Toshiaki Nakamura ,  Kimio Aizawa ,  Takashi Fujino

IPC分类号： H01P1203

CPC分类号： H01P1/20345 ,  H01P1/20381 ,  H01P1/2056 ,  H01P1/2135

摘要： A dielectric antenna duplexer used in a high frequency radio device such as a portable telephone, and a dielectric filter for forming the duplexer of the SIR (stepped impedance resonator) composed by cascade connection of first transmission lines having one end grounded and second transmission lines having one end open and lower in characteristic impedance than in the first transmission lines, first transmission lines and second transmission lines are individually coupled in electromagnetic field, thereby forming an antenna duplexer and a dielectric filter of small insertion loss, high bandwidth selectivity, excellent band pass characteristic, and low cost.

摘要翻译： 在诸如便携式电话的高频无线电设备中使用的介质天线双工器和用于形成由具有一端接地的第一传输线和第二传输线的级联连接的SIR（阶梯式阻抗谐振器）的双工器的介质滤波器， 一端的特征阻抗比第一传输线的开路低，第一传输线和第二传输线分别在电磁场中耦合，从而形成一个天线双工器和介质滤波器，其插入损耗小，带宽选择性好，带通优良 特点，成本低。

公开(公告)号：US06903631B2

公开(公告)日：2005-06-07

申请号：US10634524

申请日：2003-08-05

申请人： Hiroshi Kushitani ,  Shunichi Seki

发明人： Hiroshi Kushitani ,  Shunichi Seki

IPC分类号： H03H9/64 ,  H03H9/05 ,  H03H9/25 ,  H03H9/72

CPC分类号： H03H9/0542 ,  H03H9/14597 ,  H03H9/6479 ,  H03H9/6483 ,  H03H9/6493

摘要： A surface acoustic wave (SAW) filter includes an input terminal, an output terminal, a series resonator provided between the input terminal and the output terminal, first and second parallel resonators having respective one ports connected to respective ports of the series resonator, respectively, first and second nodes connected to respective other ports of the first and second parallel resonators, respectively, first and second inductance elements having respective one ends connected to the first and second nodes, respectively, a third node connected to respective other ends of the first and second inductance elements, a third inductance element having one end connected to the third node, a grounding terminal connected to other end of the third inductance element, and a capacitance element connected between the first and second nodes. The SAW filter has a large attenuation amount at a lower side of a pass band of the filter, thus having sufficient properties.

摘要翻译： 表面声波（SAW）滤波器包括输入端子，输出端子，设置在输入端子和输出端子之间的串联谐振器，第一和第二并联谐振器分别具有连接到串联谐振器的各个端口的相应的一个端口， 第一和第二节点分别连接到第一和第二并联谐振器的相应的其它端口，第一和第二电感元件分别具有分别连接到第一和第二节点的一端，连接到第一和第二并联谐振器的相应另一端的第三节点， 第二电感元件，具有连接到第三节点的一端的第三电感元件，连接到第三电感元件的另一端的接地端子以及连接在第一和第二节点之间的电容元件。 SAW滤波器在滤波器的通带的下侧具有较大的衰减量，因此具有足够的性能。