-
公开(公告)号：US07127215B2
公开(公告)日：2006-10-24
申请号：US09425668
申请日：1999-10-22
CPC分类号： H04B1/48
摘要： A transmitting/receiving switch, in which a transmission terminal connected to a transmission circuit is connected to an antenna terminal through a first switching element, a filter for attenuating harmonic contents in a transmission signal, a phase-shift circuit for significantly increasing an impedance from a node toward said transmission terminal in a reception frequency band by phase-adjusting the amount of phase shift by performing phase adjustment according to the amount of the phase shift generated by said filter. Furthermore, the antenna terminal connected to an antenna ANT is connected to a reception terminal through the node and a second switching element, and the reception terminal is connected to a reception circuit Rx.
摘要翻译： 一种发送/接收开关，其中连接到发送电路的发送终端通过第一开关元件连接到天线端子，用于衰减发送信号中的谐波内容的滤波器，相移电路，用于显着增加来自 通过根据由所述滤波器产生的相移量执行相位调整来相位调整相移量，从而在接收频带中向所述发送终端发送一个节点。 此外，连接到天线ANT的天线端子通过节点和第二开关元件连接到接收终端，并且接收终端连接到接收电路Rx。
-
公开(公告)号：US07038557B2
公开(公告)日：2006-05-02
申请号：US10085264
申请日：2002-02-27
申请人： Hiroyuki Nakamura , Toshio Ishizaki , Hisashi Adachi , Makoto Sakakura , Hiroaki Kosugi , Hiroyuki Itokawa , Toshiaki Nakamura
发明人： Hiroyuki Nakamura , Toshio Ishizaki , Hisashi Adachi , Makoto Sakakura , Hiroaki Kosugi , Hiroyuki Itokawa , Toshiaki Nakamura
IPC分类号： H03H7/46
CPC分类号： H04B1/0057 , H04B1/48 , H04B1/52
摘要： An antenna duplexer has an antenna terminal; a transmitting phase-shift circuit, one side of which is connected to the antenna terminal; a receiving phase-shift circuit, one side of which is connected to the antenna terminal; a transmitting filter connected to the other side of the transmitting phase-shift circuit and a transmitting terminal; and a receiving filter connected to the other side of the receiving phase-shift circuit and a receiving terminal; wherein the transmitting filter and/or the receiving filter is a composite filter, and the composite filter attains a characteristic having an attenuation pole at simultaneous transmission and reception time when transmission and reception are simultaneously performed, and controls respective impedances by the transmitting phase-shift circuit and the receiving phase-shift circuit to operate as a sharing unit and attains a characteristic where the attenuation pole is removed at non simultaneous transmission and reception time when transmission and reception are not performed simultaneously.
-
公开(公告)号：US5475350A
公开(公告)日：1995-12-12
申请号：US127500
申请日：1993-09-28
申请人： Toru Yamada , Toshio Ishizaki , Yoshihiro Nakagawa , Makoto Sakakura , Koji Hashimoto , Toshiaki Nakamura
发明人： Toru Yamada , Toshio Ishizaki , Yoshihiro Nakagawa , Makoto Sakakura , Koji Hashimoto , Toshiaki Nakamura
摘要： A coupled capacitor substrate having thereon a plane capacitor which is integrally bonded on a dielectric resonator and a varactor which is mounted on the coupled capacitor substrate so as to couple the dielectric resonator via the plane capacitor.
摘要翻译： 一种耦合电容器基板，其上具有整体结合在介质谐振器上的平面电容器和安装在耦合的电容器基板上以便经由平面电容器耦合介质谐振器的变容二极管。
-
公开(公告)号：US06456172B1
公开(公告)日：2002-09-24
申请号：US09692546
申请日：2000-10-20
申请人： Toshio Ishizaki , Toru Yamada , Hiroshi Kagata , Makoto Sakakura
发明人： Toshio Ishizaki , Toru Yamada , Hiroshi Kagata , Makoto Sakakura
IPC分类号： H03H972
CPC分类号： H01P1/20345 , H01L23/66 , H01L2223/6627 , H01L2224/16225 , H01L2224/16235 , H01L2924/00014 , H01L2924/0102 , H01L2924/01057 , H01L2924/01079 , H01L2924/09701 , H01L2924/1305 , H01L2924/15153 , H01L2924/15165 , H01L2924/1517 , H01L2924/16152 , H01L2924/16195 , H01L2924/19032 , H01L2924/19105 , H01L2924/3011 , H01L2924/3025 , H01L2924/00 , H01L2224/0401
摘要： A multilayered ceramic RF device having at least one radio frequency filter includes a low temperature-cofired multilayered ceramic body having a plurality of ceramic layers laminated one upon another and fired together. The low temperature-cofired multilayered ceramic body also has a first electrode pattern formed therein and a second electrode pattern formed thereon. The first and second electrode patterns are electrically connected to one another through a via hole. A bare semiconductor chip is mounted on the low temperature-cofired multilayered ceramic body with a face down bonding, and the bare semiconductor chip is coated with a sealing resin. The at least one radio frequency filter is a multilayered filter formed in the low temperature-cofired multilayered ceramic body, and the multilayered filter includes a part of the first and second electrode patterns.
摘要翻译： 具有至少一个射频滤波器的多层陶瓷RF器件包括具有多个层叠在一起的多个陶瓷层的低温共烧多层陶瓷体。 低温共烧多层陶瓷体还具有形成在其中的第一电极图案和形成在其上的第二电极图案。 第一和第二电极图案通过通孔彼此电连接。 裸机半导体芯片安装在低温共烧的多层陶瓷体上，面朝下接合，裸半导体芯片涂有密封树脂。 所述至少一个射频滤波器是形成在所述低温共烧多层陶瓷体中的多层滤光器，并且所述多层滤光器包括所述第一和第二电极图案的一部分。
-
5.发明授权
公开(公告)号：US6166613A
公开(公告)日：2000-12-26
申请号：US896908
申请日：1997-07-18
CPC分类号： H01P7/088
摘要： A voltage-controlled resonator is fabricated by laminating, one on top of the other, a first dielectric which has a resonant circuit and on the upper surface of which a variable-capacitance element is mounted, and a second dielectric which has a through-hole formed in a position thereof corresponding to the position of the variable-capacitance element and which has a dual function of shielding and resonant frequency tuning. With this structure, the height of the resonator can be further reduced compared with the prior art while retaining the shielding effect, and moreover, further precise resonant frequency tuning can be accomplished as compared with the prior art.
摘要翻译： 一个压控谐振器通过层叠一个第一介电体制成，第一电介质具有谐振电路，其上表面上安装有可变电容元件，第二电介质具有通孔 形成在与可变电容元件的位置对应的位置，并具有屏蔽和共振频率调谐的双重功能。 利用这种结构，与现有技术相比，谐振器的高度可以进一步降低，同时保持屏蔽效果，此外，与现有技术相比，可以实现更精确的谐振频率调谐。
-
公开(公告)号：US6072376A
公开(公告)日：2000-06-06
申请号：US912122
申请日：1997-08-15
申请人： Toshimitsu Matsuyoshi , Minoru Tachibana , Junichi Yoshizumi , Makoto Sakakura , Toshio Ishizaki , Tomoki Uwano , Toshiaki Nakamura
发明人： Toshimitsu Matsuyoshi , Minoru Tachibana , Junichi Yoshizumi , Makoto Sakakura , Toshio Ishizaki , Tomoki Uwano , Toshiaki Nakamura
CPC分类号： H01P1/2053 , H03F3/604 , H03F2200/372
摘要： A filter with a low-noise amplifier includes: two amplification circuits, a first 3-dB hybrid circuit which is connected to an input side of the amplification circuits, a second 3-dB hybrid circuit which is connected to an output side of the amplification circuits, and a filter which is connected to one input terminal of the first 3-dB hybrid circuit. The other input terminal of the first 3-dB hybrid circuit is subjected to matched termination. A signal is inputted to an input terminal of the filter and is outputted from one output terminal of the second 3-dB hybrid circuit and the other output terminal of the second 3-dB hybrid circuit is subjected to matched termination.
摘要翻译： 具有低噪声放大器的滤波器包括：两个放大电路，连接到放大电路的输入侧的第一个3-dB混合电路，连接到放大器的输出侧的第二个3-dB混合电路 电路和连接到第一3-dB混合电路的一个输入端的滤波器。 第一个3-dB混合电路的另一个输入端子进行匹配的端接。 信号被输入到滤波器的输入端，并从第二3-dB混合电路的一个输出端输出，第二个3-dB混合电路的另一个输出端经过匹配的终端。
-
公开(公告)号：US07479847B2
公开(公告)日：2009-01-20
申请号：US11582425
申请日：2006-10-18
申请人： Takehiko Yamakawa , Hiroshi Yamaguchi , Hiroshi Nakatsuka , Hiroyuki Nakamura , Keiji Onishi , Toshio Ishizaki
发明人： Takehiko Yamakawa , Hiroshi Yamaguchi , Hiroshi Nakatsuka , Hiroyuki Nakamura , Keiji Onishi , Toshio Ishizaki
CPC分类号： H03H9/605 , H03H9/25 , H03H9/542 , H03H9/6483 , H03H9/6493
摘要： A series piezoelectric resonator 11 is connected in series between an input terminal 15a and an output terminal 15b. A first electrode of a parallel piezoelectric resonator 12a is connected to a connection point between the input terminal 15a and the series piezoelectric resonator 11, and a second electrode of the parallel piezoelectric resonator 12a is connected to a first terminal of an inductor 13a. A first electrode of a parallel piezoelectric resonator 12b is connected to a connection point between the series piezoelectric resonator 11 and the output terminal 15b, and a second electrode of the parallel piezoelectric resonator 12b is connected to a first terminal of an inductor 13b. Second terminals of the inductors 13a and 13b are grounded. An additional piezoelectric resonator 14 is connected between the second electrode of the parallel piezoelectric resonator 12a and the second electrode of the parallel piezoelectric resonator 12b.
摘要翻译： 串联压电谐振器11串联连接在输入端子15a和输出端子15b之间。 平行压电谐振器12a的第一电极连接到输入端子15a和串联压电谐振器11之间的连接点，并联压电谐振器12a的第二电极连接到电感器13a的第一端子。 平行压电谐振器12b的第一电极连接到串联压电谐振器11和输出端子15b之间的连接点，并联压电谐振器12b的第二电极连接到电感器13b的第一端子。 电感器13a和13b的第二端接地。 另外的压电谐振器14连接在并联压电谐振器12a的第二电极和并联压电谐振器12b的第二电极之间。
-
8.发明申请Balanced high-frequency device and balanced high-frequency circuit using the same 有权平衡高频设备和平衡高频电路使用相同公开(公告)号：US20050212383A1
公开(公告)日：2005-09-29
申请号：US11059918
申请日：2005-02-17
CPC分类号： H03H9/0038 , H03H7/42 , H03H7/425 , H03H9/0028 , H03H9/0042 , H03H9/14588 , H03H11/32
摘要： A balanced high-frequency device includes a balanced element; at least one balanced terminal connected to the balanced element; a phase circuit having at least first, second, and third impedance elements, and electrically connected between the balanced element and the balanced terminal. The first impedance element and the second impedance element are connected between the balanced terminals in series, the connection point between the first impedance element and the second impedance element is grounded through the third impedance element, a series resonant circuit is formed by the first impedance element and the third impedance element. A series resonant circuit is formed by the second impedance element and the third impedance element, and an impedance to a differential signal component in the passing band of the balanced elements of the first and second impedance elements is set so as to increase to the ground plane.
摘要翻译： 平衡式高频装置包括平衡元件; 连接到所述平衡元件的至少一个平衡端子; 具有至少第一，第二和第三阻抗元件的相电路，并且电连接在所述平衡元件和所述平衡端子之间。 第一阻抗元件和第二阻抗元件串联在平衡端子之间，第一阻抗元件和第二阻抗元件之间的连接点通过第三阻抗元件接地，串联谐振电路由第一阻抗元件 和第三阻抗元件。 串联谐振电路由第二阻抗元件和第三阻抗元件形成，并且对第一和第二阻抗元件的平衡元件的通带中的差分信号分量的阻抗设定为增加到接地面 。
-
9.发明授权Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same 有权数字式换能器，表面声波滤波器及使用其的通信装置公开(公告)号：US06801100B2
公开(公告)日：2004-10-05
申请号：US10051310
申请日：2002-01-22
IPC分类号： H03H964
CPC分类号： H03H9/0042 , H03H9/0038 , H03H9/0061 , H03H9/02763 , H03H9/14588 , H03H9/6436 , H03H9/6443 , H03H9/6463 , H03H9/6479
摘要： An inter-digital transducer has a piezoelectric substrate; and an IDT (inter-digital transducer) electrode having a pair of upper bus bar electrode and lower bus bar electrode placed facing each other on the piezoelectric substrate and a plurality of electrode fingers placed on the piezoelectric substrate each being led out from either the upper bus bar electrode or the lower bus bar electrode toward the other bus bar electrode, wherein the IDT electrode is constructed of a plurality of divisional IDT electrodes and connected to a balanced type terminal.
摘要翻译： 数字式换能器具有压电基板; 以及IDT（数字式换能器）电极，其具有在压电基板上彼此面对的一对上汇流条电极和下汇流条电极，并且设置在压电基板上的多个电极指每个从上部 汇流条电极或下汇流条电极朝向另一母线电极，其中IDT电极由多个分开的IDT电极构成并连接到平衡型端子。
-
公开(公告)号：US07138888B2
公开(公告)日：2006-11-21
申请号：US10984839
申请日：2004-11-10
申请人： Takehiko Yamakawa , Hiroshi Yamaguchi , Hiroshi Nakatsuka , Hiroyuki Nakamura , Keiji Onishi , Toshio Ishizaki
发明人： Takehiko Yamakawa , Hiroshi Yamaguchi , Hiroshi Nakatsuka , Hiroyuki Nakamura , Keiji Onishi , Toshio Ishizaki
IPC分类号： H03H9/00
CPC分类号： H03H9/605 , H03H9/6433
摘要： A series piezoelectric resonator is connected in series between an input terminal and an output terminal. A first electrode of a first parallel piezoelectric resonator is connected to a connection point between the input terminal and the series piezoelectric resonator, and a second electrode of the first parallel piezoelectric resonator is connected to a first terminal of a first inductor. A first electrode of a second parallel piezoelectric resonator is connected to a connection point between the series piezoelectric resonator and the output terminal, and a second electrode of the second parallel piezoelectric resonator is connected to a first terminal of a second inductor. Second terminals of the first and second inductors are grounded. An additional piezoelectric resonator is connected between the second electrode of the first parallel piezoelectric resonator and the second electrode of the second parallel piezoelectric resonator.
摘要翻译： 串联压电谐振器串联连接在输入端和输出端之间。 第一并联压电谐振器的第一电极连接到输入端子和串联压电谐振器之间的连接点，并且第一并联压电谐振器的第二电极连接到第一电感器的第一端子。 第二并联压电谐振器的第一电极连接到串联压电谐振器和输出端之间的连接点，第二并联压电谐振器的第二电极连接到第二电感器的第一端。 第一和第二电感器的第二端子接地。 附加的压电谐振器连接在第一并联压电谐振器的第二电极和第二并联压电谐振器的第二电极之间。
-
-
-
-
-
-
-
-
-
搜索结果
121 条记录 (耗时 0.027 秒)
