-
1.发明授权
公开(公告)号：US5909461A
公开(公告)日：1999-06-01
申请号：US677957
申请日：1996-07-10
申请人： Naoki Koga , Masatoshi Ohtsuka , Seishi Tomari
发明人： Naoki Koga , Masatoshi Ohtsuka , Seishi Tomari
CPC分类号： H04B1/70712 , H03H9/02779 , H03H9/6416 , H03H9/72 , H03H9/02622
摘要： A spread spectrum communication apparatus includes at least one surface acoustic wave matched filter, a plurality of surface acoustic wave delay lines having different delay amounts, and integrating circuits for integrating an output signal of the surface acoustic wave matched filter and the respective output signals of the plurality of surface acoustic wave delay lines.
摘要翻译： 扩展频谱通信装置包括至少一个表面声波匹配滤波器，具有不同延迟量的多个表面声波延迟线，以及用于对声表面波匹配滤波器的输出信号和各声道输出信号进行积分的积分电路 多个表面声波延迟线。
-
公开(公告)号：US3961290A
公开(公告)日：1976-06-01
申请号：US547900
申请日：1975-02-07
申请人： Samuel D. Moore
发明人： Samuel D. Moore
CPC分类号： H03H9/6406 , H03H9/6416
摘要： A surface wave device (SWD) programmable to produce any one of a plurality of phase coded SWD digital delay line configurations from a single transducer pattern characterized by parallel transducer electrode arrays to provide for each of two opposite phase alternatives of acoustic surface waves being propagated. Each transducer comprises pairs of interdigital taps, each tap characterizing a single binary bit. Transducer phase coding is accomplished by severing in selected taps all metalized fingers of like polarity from their common conductor bar. Critical configuration tolerances prohibitive to programmed operations are thus obviated.
摘要翻译： 表面波器件（SWD）可编程为从单个换能器图案产生多个相位编码的SWD数字延迟线配置中的任何一个，其特征在于平行换能器电极阵列，以提供传播的声表面波的两个相反相位替代方案。 每个换能器包括一对叉指抽头，每个抽头表征单个二进制位。 传感器相位编码是通过在所选择的抽头中从其公共导体条切断所有类似极性的金属化手指来完成的。 因此避免了编程操作禁止的关键配置公差。
-
3.发明授权公开(公告)号：US06265807B1
公开(公告)日：2001-07-24
申请号：US09266003
申请日：1999-03-11
申请人： Naoki Koga , Masatoshi Ohtsuka , Seishi Tomari
发明人： Naoki Koga , Masatoshi Ohtsuka , Seishi Tomari
IPC分类号： H03H925
CPC分类号： H04B1/70712 , H03H9/02622 , H03H9/02779 , H03H9/6416 , H03H9/72
摘要： A spread spectrum communication apparatus includes at least one surface acoustic wave matched filter, a plurality of surface acoustic wave delay lines having different delay amounts, and integrating circuits for integrating an output signal of the surface acoustic wave matched filter and the respective output signals of the plurality of surface acoustic wave delay lines.
摘要翻译： 扩展频谱通信装置包括至少一个表面声波匹配滤波器，具有不同延迟量的多个表面声波延迟线，以及用于对声表面波匹配滤波器的输出信号和各声道输出信号进行积分的积分电路 多个表面声波延迟线。
-
公开(公告)号：US4506239A
公开(公告)日：1985-03-19
申请号：US436204
申请日：1982-10-25
CPC分类号： H03H9/6416
摘要： Compound surface acoustic wave matched filters comprise chirp-biphase and biphase code multiplex transducer pairs on piezoelectric substrates. Both alternatives offer significantly improved processing gain when compared with conventional biphase filters. The advantage is realized by convolving the correlation peak of the chirp or biphase input transducer on the response of the conventional biphase output transducer, thus achieving a large processing gain with a minimum number of transducer electrodes.
摘要翻译： 复合表面声波匹配滤波器包括压电基片上的啁啾双相和双相码多路复用换能器对。 与传统的双相滤波器相比，两种替代方案都能显着提高处理增益。 通过将啁啾或双相输入换能器的相关峰对应于常规双相输出换能器的响应来实现优点，从而实现具有最小数量的换能器电极的大的处理增益。
-
公开(公告)号：US20190068166A1
公开(公告)日：2019-02-28
申请号：US16179004
申请日：2018-11-02
发明人： Kenichi ISHIZUKA
CPC分类号： H03H9/72 , H03H7/09 , H03H7/1758 , H03H7/1775 , H03H7/21 , H03H9/6416 , H03H9/6489 , H03H9/725 , H03H2001/0085 , H04B1/40 , H04B1/405
摘要： A phase shifter module includes a base material, a common terminal, and individual terminals, the common terminal and the individual terminals being provided at the base material. Inside the base material, phase shifters that are connected between the individual terminals and the common terminal, respectively, are provided. The phase shifters each include a primary coil and a secondary coil that is coupled to the primary coil by magnetic field coupling and define a transformer phase shifter. With this configuration, a phase shifter module for use with SAW filters while reducing or preventing interference among the SAW filters, a multiplexer/demultiplexer that includes the phase shifter module, and a communication apparatus that includes the phase shifter module, are obtained.
-
公开(公告)号：US3831044A
公开(公告)日：1974-08-20
申请号：US41348573
申请日：1973-11-07
申请人： US NAVY
发明人： SPEISER J
CPC分类号： H03H9/6416
摘要： A coded, acoustic, surface-wave, device having a high input impedance, comprising a substrate, and an input and an output transducer, both disposed upon the substrate. The input transducer comprises a plurality of N linear, parallel, equallyspaced electrodes and a plurality of N-1 sets of linear, parallel, electrodes, shorter in length than the first-named plurality of longer electrodes, and interposed between, parallel to, and equally spaced between, the longer electrodes, the shorter electrodes being disposed at one or the other end of the longer electrodes, in either the upper or lower propagation channel. The combination of placements form a code. The output transducer disposed upon the substrate comprises: a longer electrode, spaced a distance apart from, and parallel to the electrodes of, the input transducer, which first intercepts the propagating acoustic wave; and a pair of sets of shorter electrodes; a pair of output electrodes, approximately equal in length to either of the other named shorter electrodes, for providing a transduced electrical signal.
摘要翻译： 具有高输入阻抗的编码的声表面波装置，包括基板，以及设置在基板上的输入和输出换能器。 输入换能器包括多个N个线性，平行，等间隔的电极和多个N-1组直线，平行的电极，其长度小于第一命名的多个较长电极，并且插入在平行于 并且在较长的电极之间，等距间隔较短的电极设置在较长电极的一端或另一端，位于上传播通道或下传播通道中。 展示位置的组合形成代码。 设置在基板上的输出传感器包括：与首先拦截传播声波的输入传感器间隔开并平行于电极的较长电极; 和一组较短的电极; 一对输出电极，其长度大致等于其他命名的较短电极中的任一个，用于提供转换的电信号。
-
公开(公告)号：US3727718A
公开(公告)日：1973-04-17
申请号：US3727718D
申请日：1971-11-24
申请人： US NAVY
发明人： WHITEHOUSE H
CPC分类号： H03H9/72 , G01S13/64 , H03H9/02755 , H03H9/14547 , H03H9/14558 , H03H9/14561 , H03H9/14564 , H03H9/14567 , H03H9/6416
摘要： A surface-wave ambiguity analyzer comprising a substrate, capable of propagating an acoustic surface wave on its surface, and a transmitting electroacoustic transducer, disposed upon the substrate, having a perimeter substantially in the shape of a trapezoid whose base is parallel to the direction of surface wave propagation. The transmitting transducer comprises a pair of sets of interdigited electrodes, the configuration of the electrodes conforming in shape to the graphs of a set of regular functions which do not cross or otherwise touch each other, a top bus bar, parallel to the base of the trapezoid, to which one of the sets of electrodes is connected, and a bottom bus bar, forming the base of the trapezoid, to which the other set of electrodes of the pair of sets is connected, the top and bottom bus bars being connectable to an electrical signal source. Two absorbers, one on each end of the substrate, are disposed perpendicularly to the base of the trapezoid, for absorbing unwanted acoustic reflections. The ambiguity analyzer may further comprise at least one acousto-electric receiving transducer, disposed at one end of the substrate between the transmitting transducer and one of the absorbers, whose electrodes are disposed perpendicularly to the direction of propagation of the acoustic wave.
摘要翻译： 一种表面波模糊度分析仪，其包括能够在其表面上传播声表面波的基板和设置在基板上的透射电声换能器，其具有基本上呈梯形形状的周边，其基部平行于 表面波传播。 发射换能器包括一对交叉电极组，电极的形状与一组不交叉或以其他方式相互接触的规则函数的曲线图形成，顶部母线平行于 梯形，电极组中的一个连接到所述一对组电极的另一组电极所连接的形成梯形的底部的底部汇流条，所述顶部和底部汇流条可连接到 电信号源。 两个吸收器，一个在基板的每一端，垂直于梯形的底部设置，用于吸收不需要的声反射。 模糊度分析器还可以包括至少一个声电接收换能器，其设置在发射换能器和其中一个吸收体之间的基板的一端，其电极垂直于声波的传播方向设置。
-
公开(公告)号：US20240250656A1
公开(公告)日：2024-07-25
申请号：US18626586
申请日：2024-04-04
发明人： Motoki OZASA
CPC分类号： H03H7/38 , H01F27/29 , H03H7/0138 , H03H7/03 , H03H9/6416
摘要： A filter module includes an antenna connection terminal, filter elements, and inductors. The filter elements are connected to an antenna connection terminal. A first inductor is connected between the antenna connection terminal and the filter elements. A second inductor is connected between a transmission line, which connects the first inductor and the filter elements, and a ground reference potential. The filter elements are on an insulating multilayer substrate. The inductors include electrodes on the multilayer substrate. Inductor electrodes of the first inductor and central cavities of the inductor electrodes are at positions different from other electrodes inside the multilayer substrate.
-
公开(公告)号：US20180083600A1
公开(公告)日：2018-03-22
申请号：US15695063
申请日：2017-09-05
发明人： Akira NOGUCHI
CPC分类号： H03H9/605 , H03H9/0557 , H03H9/0566 , H03H9/0576 , H03H9/586 , H03H9/6416 , H03H9/6483 , H03H9/706 , H03H9/725
摘要： An elastic wave apparatus includes first and second bandpass filters and the first bandpass filter is a ladder elastic wave filter. The mounting substrate includes an inductor which is connected between at least one of parallel arm resonators and a ground potential, a signal wiring at a hot side, which is connected to the first bandpass filter, and a ground wiring. When the mounting substrate is viewed from a side of a surface on which the elastic wave filter chip is mounted, a portion of the inductor overlaps with a portion of the signal wiring and a slit defining a wiring missing portion in which the ground wiring is absent in the ground wiring is provided in the overlapped portion.
-
10.发明授权Surface acoustic wave matched filter with dispersive substrate and saw group velocity based output electrode design 有权表面声波匹配滤波器与分散基板和锯组速度输出电极设计公开(公告)号：US06275123B1
公开(公告)日：2001-08-14
申请号：US09351944
申请日：1999-07-12
申请人： Mitsuhiro Tanaka , Tomohiko Shibata , Yuji Hori
发明人： Mitsuhiro Tanaka , Tomohiko Shibata , Yuji Hori
IPC分类号： H03H964
CPC分类号： H03H9/6416
摘要： A surface acoustic wave matched filter for use in a spread spectrum communication system is disclosed. The surface acoustic wave matched filter includes a substrate having dispersity and is composed of a sapphire main body and a piezoelectric aluminum nitride. A tap distance L of an output side electrode is designed on the basis of a group velocity vg instead of a phase velocity vs in order to match the tap distance L with an input spread spectrum signal and to improve a correlation peak level of an output demodulated signal. When the tap distance L is set to satisfy a condition of vg/f1×0.97≦L≦vg/f1×1.02, a decrease in the correlation peak level of the matched filter can be improved from 7 dB to a value smaller than 3 dB, and S/N of the output demodulated signal can be increased. Thus, the disclosed device renders it no longer necessary to process the output demodulated signal by a complicated and power consuming circuit.
摘要翻译： 公开了一种用于扩频通信系统中的表面声波匹配滤波器。 声表面波匹配滤波器包括具有分散性并由蓝宝石主体和压电氮化铝构成的基板。 基于组速度vg而不是相位速度vs来设计输出侧电极的抽头距离L，以使抽头距离L与输入扩频信号相匹配，并且提高输出解调的相关峰值电平 信号。 当抽头距离L被设置为满足vg / f1x0.97 <= L <= vg / f1x1.02的条件时，匹配滤波器的相关峰值电平的降低可以从7dB提高到小于 3dB，可以提高输出解调信号的S / N。 因此，所公开的设备使其不再需要由复杂且耗电的电路来处理输出解调信号。
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.044 秒)
