公开(公告)号：EP3010149A3

公开(公告)日：2016-07-27

申请号：EP15187022.7

申请日：2015-09-28

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

发明人： DAVID, Jean-Baptiste ,  REINHARDT, Alexandre

IPC分类号： H03H9/54 ,  H03H3/007 ,  H03H9/02 ,  H03H9/56 ,  H03H9/70 ,  H03H9/72 ,  H03H3/02 ,  H03H3/04 ,  H03H7/38 ,  H03H9/64

CPC分类号： H03H3/04 ,  H03H3/0073 ,  H03H3/0076 ,  H03H7/38 ,  H03H9/542 ,  H03H9/545 ,  H03H9/568 ,  H03H9/64 ,  H03H9/6403 ,  H03H9/70 ,  H03H9/706 ,  H03H9/725 ,  H03H2003/0071 ,  H03H2003/027 ,  H03H2003/0464 ,  H03H2003/0471 ,  H03H2003/0478 ,  H03H2009/02165 ,  H03H2009/02173 ,  H03H2009/02196 ,  H03H2009/02204 ,  H03H2009/02496 ,  H03H2210/012 ,  H03H2210/023 ,  H03H2210/033

摘要： L'invention a pour objet un circuit résonant comprenant une borne d'entrée (Pe) et une borne de sortie (Ps) et au moins :
- un groupe de N résonateurs avec N ≥1, ayant la même fréquence de résonance et la même fréquence d'antirésonance ;
- un premier et un second éléments d'adaptation d'impédance (Cs, Cp) présentant une réactance non nulle, le premier élément étant en série avec ledit groupe de résonateurs, et le second élément étant en parallèle avec ledit groupe de résonateurs

ledit circuit résonant comprenant :
- des premiers moyens de commande dudit groupe de résonateurs permettant de fixer la capacité statique (C 0 ) dudit groupe à une première valeur ;
- des second moyens de commande permettant de fixer l'impédance du premier élément et celle du second élément à des secondes valeurs ;

lesdites première et secondes valeurs étant telles que : le triplet de valeurs : capacité statique dudit groupe / impédance du premier élément/ impédance du second élément (C 0 , Cs, Cp) permet de déterminer le triplet de paramètres suivants :
o l'impédance caractéristique Z c de l'ensemble constitué par ledit groupe, ledit premier élément d'adaptation d'impédance et ledit second élément d'adaptation ;
o la fréquence de résonance ω r dudit ensemble;
o la fréquence d'antirésonance ω a dudit ensemble,

pour stabiliser l'impédance dudit circuit à une impédance caractéristique choisie.

摘要翻译： 谐振电路包括输入端子和输出端子，并且至少包括：N≥1的谐振器组，具有相同谐振频率和相同反共振频率的谐振器; 具有非零电抗的第一和第二阻抗匹配元件，所述第一元件与所述谐振器组串联，并且所述第二元件与所述谐振器组并联，所述谐振电路包括：第一装置，用于控制所述第一和第二阻抗匹配元件， 使得所述组的静态电容被固定为第一值; 第二控制装置，使第一阻抗匹配元件和第二元件的阻抗固定为第二值; 第一和第二值使得由组的静态电容，第一元素的阻抗和第二元素的阻抗组成的值的三元组可以用于确定以下三参数：特征阻抗Zc 由组，第一阻抗匹配元件和第二匹配元件形成的组件; 组件的共振频率ωr; 组件的反共振频率ωa，以便在所选择的特性阻抗下稳定电路的阻抗。

公开(公告)号：EP2530838A4

公开(公告)日：2015-05-06

申请号：EP11737159

申请日：2011-01-28

申请人： MURATA MANUFACTURING CO

发明人： KADOTA MICHIO ,  KOBAYASHI HIDEAKI ,  OGAMI TAKASHI

IPC分类号： H03H9/64 ,  H01J37/32 ,  H03H7/12 ,  H03H7/38 ,  H03H9/02 ,  H03H9/05

CPC分类号： H03H9/6403 ,  H03H7/12 ,  H03H7/1708 ,  H03H7/175 ,  H03H7/38 ,  H03H9/02559 ,  H03H9/0542 ,  H03H9/542 ,  H03H9/6483 ,  H03H2007/386 ,  H03H2009/02204

摘要： To provide a tunable filter capable of magnifying a pass band width or increasing a frequency variable amount. A tunable filter (1) where a resonator circuit portion (S11, S12) is provided in at least one of a series arm connecting an input terminal (22) and an output terminal (23) to each other and a parallel arm connecting the series arm and a ground potential to each other, a first variable capacitor (C2, C3) is connected in series to the resonator circuit portion (S11, S12), and a second variable capacitor (CP1, CP2) is connected in parallel to the resonator circuit portion (S11, S12), wherein the resonator circuit portion includes a piezoelectric substrate (11) including LiNbO 3 or LiTaO 3 , an elastic wave resonator including an electrode (12) formed on the piezoelectric substrate (11), and a bandwidth extending inductance (Lx, Lx) connected to the elastic wave resonator.

公开(公告)号：EP1742349A4

公开(公告)日：2009-01-07

申请号：EP05729368

申请日：2005-04-06

申请人： SEIKO EPSON CORP

发明人： OGISO HIROYUKI

IPC分类号： H03B5/30 ,  H03B5/32 ,  H03H9/145 ,  H03H9/64 ,  H04L27/12

CPC分类号： H03H9/6403 ,  H03B5/326

摘要： It is possible to provide an oscillation circuit capable of switching over the frequency band without discontinuity of the output phase and maintaining preferable frequency accuracy and frequency deviation accuracy even when the frequency band is changed. An electronic device using the oscillation circuit can also be provided. In order to achieve the aforementioned object, the oscillation circuit includes: a SAW oscillator (10) having a pair of reflectors (14) arranged on a piezoelectric substrate and a pair of IDTs (16) formed by comb-shaped electrodes (18) and arranged in parallel to each other between the reflectors (14); an inverter (20) to which the IDTs (16) are connected in parallel to each other; and switching means (22) arranged between each of the pair of comb-shaped electrodes constituting one of the two IDTs (16) and the inverter (20) and selectively connecting the input side and the output side of the inverter (20) connected to the pair of comb-shaped electrodes (18).

公开(公告)号：EP2680285A1

公开(公告)日：2014-01-01

申请号：EP12749356.7

申请日：2012-02-14

申请人： Murata Manufacturing Co., Ltd.

发明人： KADOTA, Michio ,  KOUTSAROFF, Ivoyl P. ,  KIMURA, Tetsuya ,  TOCHISHITA, Hikari

IPC分类号： H01G7/06 ,  H03H9/17 ,  H03H9/64

CPC分类号： H01G7/06 ,  H03H9/542 ,  H03H9/64 ,  H03H9/6403 ,  H03H2003/0464

摘要： Provided is a variable capacitance element that includes a dielectric layer whose relative dielectric constant varies in accordance with an applied voltage and that can achieve reduction in size of a piezoelectric substrate such as a piezoelectric resonant component and a tunable filter. A variable capacitance element (1) includes a piezoelectric substrate (2), a buffer layer (3) that is formed on the piezoelectric substrate (2) and has an orientation, a dielectric layer (4) that is formed on the buffer layer (3) and whose relative dielectric constant varies in accordance with an applied voltage, and a first electrode and a second electrode that are provided so as to be capable of applying an electric field to the dielectric layer (4).

摘要翻译： 提供了一种可变电容元件，其包括相对介电常数根据施加电压而变化的介电层，并且可以实现诸如压电谐振部件和可调谐滤波器之类的压电基板的尺寸的减小。 可变电容元件（1）包括压电基板（2），形成在压电基板（2）上并具有取向的缓冲层（3），形成在缓冲层上的介电层（4） 3），其相对介电常数根据施加的电压而变化，以及第一电极和第二电极，其被设置为能够向电介质层（4）施加电场。

公开(公告)号：EP2533422A2

公开(公告)日：2012-12-12

申请号：EP12183354.5

申请日：2011-01-28

申请人： Murata Manufacturing Co., Ltd.

发明人： Kadota, Michio ,  Kobayashi, Kideaki ,  Ogami, Takashi

IPC分类号： H03H7/12 ,  H03H9/02 ,  H03H9/64 ,  H03H9/05 ,  H03H7/38 ,  H01J37/32

CPC分类号： H03H9/6403 ,  H03H7/12 ,  H03H7/1708 ,  H03H7/175 ,  H03H7/38 ,  H03H9/02559 ,  H03H9/0542 ,  H03H9/542 ,  H03H9/6483 ,  H03H2007/386 ,  H03H2009/02204

摘要： To provide a tunable filter capable of magnifying a pass band width or increasing a frequency variable amount. A tunable filter (1) where a resonator circuit portion (S11, S12) is provided in at least one of a series arm connecting an input terminal (22) and an output terminal (23) to each other and a parallel arm connecting the series arm and a ground potential to each other, a first variable capacitor (C2, C3) is connected in series to the resonator circuit portion (S11, S12), and a second variable capacitor (CP1, CP2) is connected in parallel to the resonator circuit portion (S11, S12), wherein the resonator circuit portion includes a piezoelectric substrate (11) including LiNbO 3 or LiTaO 3 , an elastic wave resonator including an electrode (12) formed on the piezoelectric substrate (11), and a bandwidth extending inductance (Lx, Lx) connected to the elastic wave resonator.

摘要翻译： 提供能够放大通带宽度或增加频率可变量的可调谐滤波器。 一种可调谐滤波器（1），其中谐振器电路部分（S11，S12）设置在将输入端子（22）和输出端子（23）彼此连接的串联臂中的至少一个以及连接该串联 臂和接地电位，第一可变电容器（C2，C3）串联连接到谐振器电路部分（S11，S12），并且第二可变电容器（CP1，CP2）并联连接到谐振器 电路部分（S11，S12），其中所述谐振器电路部分包括包含LiNbO 3或LiTaO 3的压电衬底（11），包括形成在所述压电衬底（11）上的电极（12）的弹性波谐振器，以及扩展 电感（Lx，Lx）连接到弹性波谐振器。

公开(公告)号：EP1323232B1

公开(公告)日：2004-07-14

申请号：EP01978176.4

申请日：2001-09-20

申请人： Siemens Aktiengesellschaft

发明人： OSTERTAG, Thomas ,  KORDEN, Christian ,  RUILE, Werner

IPC分类号： H03H9/64 ,  H03H3/04

CPC分类号： H03L7/18 ,  H03H3/04 ,  H03H9/6403 ,  H03H2009/02196 ,  H03J3/08 ,  H03J3/28 ,  H03J5/0272 ,  H03L7/0805

公开(公告)号：EP1410501A2

公开(公告)日：2004-04-21

申请号：EP01953078.1

申请日：2001-07-19

申请人： Nortel Networks Limited

发明人： LIU, Wen ,  BEAUDIN, Steve, A. ,  GRATTON, Conrad, F.

IPC分类号： H03H9/00

CPC分类号： H03H9/6403 ,  H03H9/0042 ,  H03H9/02771 ,  H03H9/14505 ,  H03H9/14517 ,  H03H9/14558 ,  H03H9/643

摘要： A tapered IDT function is provided in an IDT of a SAW device having fingers substantially parallel to one another by applying a static electric field to a piezoelectric substrate of the SAW device to generate in the substrate a strain which varies across the aperture of the IDT, thereby varying a center frequency of the IDT across the aperture of the IDT. The electric field can be perpendicular to the fingers and created by applying a dc voltage between conductors at least one of which can be tapered or angled, either in the region of the IDT to produce a strain directly or adjacent to the IDT to produce a strain indirectly, or it can be parallel to the fingers, two fields with opposite directions being created at the two sides of the IDT.

公开(公告)号：EP1407547A4

公开(公告)日：2004-04-14

申请号：EP01916725

申请日：2001-02-01

申请人： UNIV RUTGERS

发明人： ZHU JIAHUA ,  LU YICHENG ,  KOSINSKI JOHN ,  PASTORE ROBERT

IPC分类号： H03H9/145 ,  H03H9/25 ,  H03H9/64 ,  H03H9/48

CPC分类号： H03H9/6403

摘要： A novel programmable SAW filter (100) with switchable multi-element interdigital transducers (IDTs) controlled by a microprocessor or a computer is provided that realizes the tunability of both center frequency and 3dB bandwidth of the SAW filter (100). As an example design, the center frequency of the SAW filter (100) provided in a dual in line package (102) ranges from 126.8 MHz to 199.1 MHz, while the 3 dB bandwidth ranges from 18.8 MHz to 58.9 MHz. The multi-input configuration increases the programmability of the device and improves insertion loss. A matching network further improves insertion loss level and stopband attenuation. A resistance weighting method improves in band ripple with the passband ripple being reduced from 6.44 dB to 1.37 dB. The programmable SAW filter (100) simplifies the device structure and fabrication process by shaping frequency response without apodization, and by eliminating the tap weighting and summing circuits, resulting in smaller devices and lower costs.

摘要翻译： 提供了一种具有由微处理器或计算机控制的可切换多元件叉指换能器（IDT）的新型可编程SAW滤波器（100），其实现了SAW滤波器（100）的中心频率和3dB带宽的可调性。 作为示例设计，在双列直插式封装（102）中提供的SAW滤波器（100）的中心频率范围从126.8MHz到199.1MHz，而3dB带宽范围从18.8MHz到58.9MHz。 多输入配置增加了器件的可编程性并提高了插入损耗。 匹配网络进一步提高了插入损耗水平和阻带衰减。 电阻加权法可以改善带纹波，通带纹波从6.44 dB降至1.37 dB。 可编程SAW滤波器（100）通过整形频率响应而无需切趾，并通过消除抽头加权和求和电路来简化器件结构和制造工艺，从而实现更小的器件和更低的成本。

公开(公告)号：EP1257050A3

公开(公告)日：2003-11-26

申请号：EP02253163.6

申请日：2002-05-07

申请人： Nihon Dempa Kogyo Co., Ltd.

发明人： Oita, Takeo, c/o Nihon Dempa Kogyo, Co. Ltd.

IPC分类号： H03B5/36

CPC分类号： H03B5/36 ,  H03H9/6403

摘要： An oscillator of frequency switching type according to the present invention can select and output any of a plurality of high frequencies, and can downsize a device. The oscillator of frequency switching type operates any of a plurality of crystal oscillators whose fundamental frequencies are different, and filters a signal output from the operating crystal oscillator with a SAW filter configured by forming a plurality of IDTs, which set passbands of different frequencies, on the same piezoelectric substrate, or with a filter arranged for each frequency. Or, a filter filtering a signal output from one crystal oscillator is selected.

公开(公告)号：EP0548911A1

公开(公告)日：1993-06-30

申请号：EP92121794.9

申请日：1992-12-22

申请人： NEC CORPORATION

发明人： Yamamoto, Yasushi, c/o NEC Corporation

IPC分类号： H03H9/64

CPC分类号： H03H9/6403

摘要： In a surface acoustic wave filter having a piezoelectric substrate (11) on which an input interdigital transducer (12) and first and second output interdigital transducers (15, 16) are disposed with the output interdigital transducers opposed to the input interdigital transducer apart therefrom, a first output port (17) for the first output interdigital transducer is directly connected to a filter output terminal (20). Between the filter output terminal and a second output port (18) for the second output interdigital transducer, a switch (22) selectively connects the second output port to the filter output terminal to make the filter output terminal produce a filtered output signal which is equal to a sum of at least one of output electric signals supplied from the first and the second output ports. The switch may be a PIN diode or a mechanical switch. The input interdigital transducer may be divided into a plurality of partial input interdigital transducers for supplying a surface acoustic wave to the output interdigital transducers, respectively. The first output interdigital transducer has a primary weighting factor while the second output interdigital transducer has a difference weighting factor.

摘要翻译： 在具有压电基板（11）的表面声波滤波器中，输入叉指式换能器（12）和第一和第二输出叉指式换能器（15,16）设置有与输入叉指式换能器相对的输出叉指式换能器， 用于第一输出叉指式换能器的第一输出端口（17）直接连接到滤波器输出端子（20）。 在第二输出叉指式换能器的过滤器输出端和第二输出端口（18）之间，开关（22）选择性地将第二输出端口连接到滤波器输出端子，使滤波器输出端产生相等的滤波输出信号 到从第一和第二输出端口提供的输出电信号中的至少一个的和。 开关可以是PIN二极管或机械开关。 输入叉指式换能器可以被分成多个部分输入叉指式换能器，用于将声表面波分别提供给输出叉指式换能器。 第一输出叉指式换能器具有主加权因子，而第二输出叉指换能器具有不同的加权因子。