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6 条记录 (耗时 0.042 秒)

    Unidirectional transducer and saw filter comprising the same
    1.
    发明授权
    Unidirectional transducer and saw filter comprising the same 失效
    单向传感器和包括其的锯式过滤器

    公开(公告)号：US06559738B2

    公开(公告)日：2003-05-06

    申请号：US09726073

    申请日：2000-11-29

    申请人： Tatsuya Tsuruoka ,  Yasufumi Horio ,  Kenji Suzuki

    发明人： Tatsuya Tsuruoka ,  Yasufumi Horio ,  Kenji Suzuki

    IPC分类号： H03H964

    CPC分类号： H03H9/643 ,  H03H9/14505

    摘要： A unidirectional transducer for a SAW filter having a first group (D) including electrode finger (21) and electrode fingers (14) and (16) arranged at center distances of 3&lgr;/8 and 5&lgr;/8 in a direction opposite to the propagation direction of the surface acoustic wave from electrode finger (21); a second group (E) including electrode fingers (22), (15) and (20) arranged at center distances of 10&lgr;/8, 13&lgr;/8 and 15&lgr;/8 in the propagation direction from electrode finger (21); and a third group (F) including electrode fingers (17), (18) and (19) arranged at center distances of 3&lgr;/8, 5&lgr;/8 and 7&lgr;/8 in the propagation direction from electrode finger (21).

    摘要翻译： 一种用于SAW滤波器的单向换能器，具有包括电极指（21）和电极指（14）的第一组（D）和（16），其布置在与传播方向相反的方向上的中心距离为3lambd / 8和5lambd / 的来自电极指（21）的表面声波; 第二组（E），其包括以电极指（21）的传播方向布置在中心距离为10lambd / 8,13lambd / 8和15lambd / 8的电极指（22），（15）和（20） 以及第三组（F），其包括沿电极指（21）的传播方向布置在中心距离为3lambd / 8,5lambd / 8和7lambd / 8的电极指（17），（18）和（19）。

    COMBINER FOR DOHERTY AMPLIFIER
    2.
    发明申请
    COMBINER FOR DOHERTY AMPLIFIER 有权
    多功能放大器组合器

    公开(公告)号：US20110169590A1

    公开(公告)日：2011-07-14

    申请号：US12909226

    申请日：2010-10-21

    申请人： Masahiko Namerikawa ,  Shinsuke Yano ,  Yasufumi Horio ,  Tatsuya Tsuruoka ,  Takami Hirai ,  Hideaki Okubo ,  Atsuo Mizuma

    发明人： Masahiko Namerikawa ,  Shinsuke Yano ,  Yasufumi Horio ,  Tatsuya Tsuruoka ,  Takami Hirai ,  Hideaki Okubo ,  Atsuo Mizuma

    IPC分类号： H01P5/12

    CPC分类号： H03F1/0288 ,  H01P5/12 ,  H01P5/187 ,  H03F3/602 ,  H03F2200/204

    摘要： A combiner for a Doherty amplifier includes, on and in a dielectric substrate, a carrier input terminal, a peak input terminal, an output terminal, a combining point for combining an output signal from the carrier amplifier and an output signal from the peak amplifier, a first λ/4 line connected between the carrier input terminal and the combining point, a second λ/4 line connected between the combining point and the output terminal, and a first directional coupler. The first directional coupler includes a third λ/4 line electromagnetically coupled to one, to be monitored, of the first λ/4 line and the second λ/4 line.

    摘要翻译： Doherty放大器的组合器在电介质衬底上和电介质衬底中包括载波输入端，峰值输入端，输出端，用于组合来自载波放大器的输出信号和来自峰值放大器的输出信号的组合点， 连接在载波输入端和组合点之间的第一λ/ 4线，连接在组合点和输出端之间的第二λ/ 4线和第一定向耦合器。 第一定向耦合器包括电磁耦合到第一λ/ 4线和第二λ/ 4线的待监视的第三λ/ 4线。

    Surface acoustic wave filter device
    4.
    发明授权
    Surface acoustic wave filter device 失效
    表面声波滤波装置

    公开(公告)号：US5294859A

    公开(公告)日：1994-03-15

    申请号：US37106

    申请日：1993-03-26

    申请人： Kazuhiko Yamanouchi ,  Mitsuhiro Tanaka ,  Masahiko Sugiyama ,  Yasufumi Horio ,  Masatsugu Oshima ,  Kenji Suzuki

    发明人： Kazuhiko Yamanouchi ,  Mitsuhiro Tanaka ,  Masahiko Sugiyama ,  Yasufumi Horio ,  Masatsugu Oshima ,  Kenji Suzuki

    IPC分类号： H03H9/145 ,  H03H9/64 ,  H01L41/08

    CPC分类号： H03H9/643 ,  H03H9/14505

    摘要： A surface acoustic wave filter device includes a substrate which comprises quartz or the like piezoelectric having a small temperature coefficient and which is formed with unidirectional transducers of asymmetrical construction. A floating electrode is spaced from intermediate position between adjacent positive and negative electrodes which are arranged in interdigital manner, to effectively utilize a mechanical reflection caused by the floating electrode. In consideration of the sign and magnitude of the reflection factor of the floating electrodes, short-circuited electrodes only are used for the floating electrodes. The surface acoustic wave filter device has improved temperature characteristic, insertion loss characteristic and phase characteristic.

    摘要翻译： 表面声波滤波器装置包括具有温度系数小的石英等压电体的基板，其形成有非对称结构的单向换能器。 浮置电极与相互正交和负极之间的中间位置间隔开，以互指的方式布置，以有效地利用由浮动电极引起的机械反射。 考虑到浮动电极的反射系数的符号和大小，短路电极仅用于浮置电极。 声表面波滤波器具有改善的温度特性，插入损耗特性和相位特性。

    Surface acoustic wave filter device with symmetrical electrode arrangement
    6.
    发明授权
    Surface acoustic wave filter device with symmetrical electrode arrangement 失效
    具有对称电极布置的表面声波滤波器件

    公开(公告)号：US5438306A

    公开(公告)日：1995-08-01

    申请号：US85121

    申请日：1993-07-01

    申请人： Kazuhiko Yamanouchi ,  Mitsuhiro Tanaka ,  Yasufumi Horio

    发明人： Kazuhiko Yamanouchi ,  Mitsuhiro Tanaka ,  Yasufumi Horio

    IPC分类号： H03H9/145 ,  H03H9/64

    CPC分类号： H03H9/6426 ,  H03H9/14505

    摘要： A surface acoustic wave filter device includes a substrate which includes quartz or the like piezoelectric material having a small temperature coefficient. The substrate has a surface which is formed with interdigital-type unidirectional transducers on input and output sides, each having a positive electrode and a negative electrode. The positive electrodes and the negative electrodes of each of the input side and output side transducers have electrode fingers which are arranged so as to transduce a harmonic wave of a selected order which is higher relative to a fundamental surface acoustic wave.

    摘要翻译： 表面声波滤波器装置包括具有温度系数小的石英等压电材料的基板。 基板具有在输入侧和输出侧形成有叉指型单向换能器的表面，每个具有正极和负极。 输入侧和输出侧换能器中的每一个的正电极和负电极具有电极指，其布置成转换相对于基本声波较高的所选次序的谐波。