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1. 发明专利

JP3255248B2 失效
公开(公告)号：JP3255248B2
公开(公告)日：2002-02-12
申请号：JP35028192
申请日：1992-12-02
IPC分类号： H03B5/30 , H03B5/12 , H03B5/32 , H03B19/14 , H03B27/00 , H03H9/68
摘要： A surface acoustic wave resonator has a plural number N of interdigital transducers arranged in a sequence on a piezoelectric substrate to generate N surface acoustic wave signals with a predetermined frequency f0 and having phase difference of 2 pi /N radian therebetween. Oscillation circuits are individually connected to the N interdigital transducers and generate N oscillation signals with the same frequency f0 and having phase difference of 2 pi /N radian therebetween. These oscillation signals are multiplied together to generate a signal with frequency N times the predetermined frequency f0.

2. 发明专利

JPH04179309A SURFACE ACOUSTIC WAVE ELEMENT 失效
公开(公告)号：JPH04179309A
公开(公告)日：1992-06-26
申请号：JP30785290
申请日：1990-11-14
申请人： SEIKO EPSON CORP
发明人： IWAMOTO OSAMU
IPC分类号： H03H9/68
摘要： PURPOSE:To improve the connecting strength of an external circuit and connecting pins by means of soldering and to miniaturize an element by providing the layer of Ag or Au on a connecting part of the external circuit added to an electrode made of Al or Al alloy. CONSTITUTION:The element is a one port-typed resonator where reflectors 3 are arranged at the both sides of an interdigital transducer electrode 2 made of Al on a crystal substrate 1. It has the connecting part 4 to the external circuit taken out from the interdigital transducer electrode 2 and the Ag layer 4 or the Au layer are provided as a second electrically conductive metal by a laminated structure on the connecting part 4. Through the connecting strength of Al or Al alloy is low, but that of Ag or Au can be made extremely strong. Thus, the connecting strength of the connecting pin 5 and the connecting part 4 of the external circuit by soldering is improved and the miniaturized surface acoustic wave element is obtained.

3. 发明专利

JPH0159765B2 失效
公开(公告)号：JPH0159765B2
公开(公告)日：1989-12-19
申请号：JP90380
申请日：1980-01-10
申请人： TEII DEII KEI KK , TODA KOJI
发明人： TODA KOJI
IPC分类号： H03H3/08 , H03H9/68

4. 发明专利

JPS6132846B2 失效
公开(公告)号：JPS6132846B2
公开(公告)日：1986-07-30
申请号：JP2036778
申请日：1978-02-23
申请人： TEKTRONIX INC
发明人： UIRIAMU SESU DORUMONDO
IPC分类号： H03H9/25 , H03H3/08 , H03H9/02 , H03H9/68

5. 发明专利

JPS5964911A Surface acoustic wave variable phase shifter 失效
标题翻译：表面声波可变相位移
公开(公告)号：JPS5964911A
公开(公告)日：1984-04-13
申请号：JP17448582
申请日：1982-10-06
申请人： Nippon Telegr & Teleph Corp
发明人： URABE SHIYUUJI , SAITOU SHIGEKI
IPC分类号： H03H3/08 , H03H9/68
CPC分类号： H03H9/68
摘要： PURPOSE:To obtain a variable phase shifter which can be integrated and miniaturized by varying the gain of a variable gain amplifier which amplifies each output signal of a surface acoustic wave element and then varying the phase of the output of a synthesizing element which synthesizes the output of the variable gain amplifier. CONSTITUTION:For a surface acoustic wave element 1, the surface acoustic wave excited by an input electrode 1a is converted into an electric signal by output electrodes 1b and 1c. These electrodes 1b and 1c produce different output phases. The output of the electrode 1b is amplified by a variable gain amplifier 2; while the output of the electrode 1c is amplified by a variable gain amplifier 1c. These amplified outputs are applied to input electrodes 7a and 7b of a surface acoustic wave element 7, and this element 7 functions as a synthesizing element. The gains of amplifiers 2 and 3 are varied to change the output phase shift generated from the electrode 7b of the element 7. Both elements 1 and 7 can be formed on the same surface acoustic wave substrate U and also converted into an IC. Thus, a compact and light-weight variable phase shifter is obtained.
摘要翻译：目的：获得一个可变相移器，通过改变可变增益放大器的增益可以集成和小型化，该可变增益放大器放大表面声波元件的每个输出信号，然后改变合成元件的输出的相位，该合成元件的合成输出的可变增益放大器。构成：对于表面声波元件1，由输入电极1a激励的表面声波由输出电极1b和1c转换成电信号。这些电极1b和1c产生不同的输出相位。电极1b的输出由可变增益放大器2放大; 而电极1c的输出由可变增益放大器1c放大。这些放大的输出被施加到表面声波元件7的输入电极7a和7b，并且该元件7用作合成元件。改变放大器2和3的增益以改变从元件7的电极7b产生的输出相移。元件1和7可以形成在相同的表面声波衬底U上，并且也被转换为IC。因此，获得了紧凑且轻量级的可变移相器。

6. 发明专利

JPS58197912A Surface acoustic wave filter having function for dividing wave 失效
标题翻译：具有分波功能的表面声波滤波器
公开(公告)号：JPS58197912A
公开(公告)日：1983-11-17
申请号：JP7996482
申请日：1982-05-14
申请人： Hitachi Ltd
发明人： HIKITA MITSUTAKA
IPC分类号： H03H9/145 , H03H3/08 , H03H9/02 , H03H9/68
CPC分类号： H03H9/02574
摘要： PURPOSE:To obtain a surface acoustic wave band pass filter equipped with a wave dividing function and formed on a single substrate or a single chip, by providing plural piezoelectric thin films on the substrate. CONSTITUTION:Two layers of the piezoelectric thin films 16, 18 consisting of ZnO are formed on the substrate 19 through a thin metallic film 17 for short circuit. Transducers 13, 14 are formed on the upper surface of the piezoelectric thin film 16 and a transducer 15 is formed between the substrate 19 and the piezoelectric thin film 18. The transducers 13, 15 are connected to an antenna and the terminal of a transmitter respectively.
摘要翻译：目的：通过在基板上设置多个压电薄膜，获得具有分波功能的表面声波带通滤波器，形成在单个基板或单个芯片上。构成：通过用于短路的金属薄膜17在基板19上形成由ZnO组成的两层压电薄膜16,18。传感器13,14形成在压电薄膜16的上表面上，并且在基板19和压电薄膜18之间形成换能器15.换能器13,15分别连接到天线和发射器的端子。

7. 发明专利

JPS52135646A ELASTIC SURFACE WAVE FILTER 失效
公开(公告)号：JPS52135646A
公开(公告)日：1977-11-12
申请号：JP5214376
申请日：1976-05-10
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ONODERA TOSHIHIRO , KODAMA RIICHI , TAKAHASHI SADAO
IPC分类号： H03H9/145 , H03H3/08 , H03H9/64 , H03H9/68
摘要： PURPOSE:To enable the desired filter characteristics, by selecting the assymmetrical characteristics for left and right of subrobe and the deviation between the distances of the main robe electrode chips.

8. 发明专利

JP2643172B2 失效
公开(公告)号：JP2643172B2
公开(公告)日：1997-08-20
申请号：JP21633687
申请日：1987-09-01
申请人： TODA KOJI
发明人： TODA KOJI
IPC分类号： H03H9/42 , H03H3/08 , H03H3/10 , H03H9/68 , H04L27/12

9. 发明专利

JPH06177644A SURFACE ACOUSTIC WAVE OSCILLATOR 失效
公开(公告)号：JPH06177644A
公开(公告)日：1994-06-24
申请号：JP35028192
申请日：1992-12-02
申请人： MURATA MANUFACTURING CO
发明人： KATO AKIRA
IPC分类号： H03B5/30 , H03B5/12 , H03B5/32 , H03B19/14 , H03B27/00 , H03H9/68
摘要： PURPOSE:To provide a surface acoustic wave oscillator by which a desired signal with small spurious radiation and a high frequency is obtained without the use of an expensive component such as a band pass filter. CONSTITUTION:A surface acoustic wave resonator 2 is formed by arranging two interdigital transducers 12,14 on a piezoelectric substrate 4 at positions causing a phase difference of pi-radian for a prescribed frequency f0. Circuit 24,26 are oscillated at the prescribed frequency f0 with cooperation of the interdigital transducers 12,14. Then outputs of the circuits 24,26 have a phase difference of pi-radian because the interdigital transducers 12,14 are arranged at positions causing a phase difference of m-radian. A computing element 28 multiplies two signals whose frequency is f0 and whose phase difference is pi-radian outputted from the oscillators 24,26 with each other to output a signal whose frequency is 2f0 being a multiple of two of the frequency f0. Thus, a desired signal with a high frequency and small spurious radiation is obtained inexpensively.

10. 发明专利

JPH02288605A MAGNETOSTATIC WAVE DELAY LINE TYPE OSCILLATOR 失效
公开(公告)号：JPH02288605A
公开(公告)日：1990-11-28
申请号：JP11005489
申请日：1989-04-28
申请人： YOKOGAWA ELECTRIC CORP
发明人： UEHARA GEN , KATAKURA HISAO
IPC分类号： H03H9/68 , H01P9/00 , H03B5/18 , H03B5/30
摘要： PURPOSE:To minimize the SSB phase noise by using an optical group delay time including a residual phase noise of an amplifier so as to design any of unknown value among an interval l of input and output transducers, a thickness (t) of a YIG thin film and a wavelength lambda. CONSTITUTION:An optimum group delay (taugs) of a magnetostatic wave is calculated according to equation I taking the effect of residual phase noise of an amplifier into account, and any unknown values among an interval l of input and output transducers 5a, 5b, a thickness (t) of a YIG thin film and a wavelength lambda of a propagated wave is decided. In equation I, L(f) is a residual phase noise [dBc/Hz] of an amplifier, F is a noise figure [dB] of the amplifier, Pin is a magnetostatic wave delay line input [dBm], DELTAH is magnetic resonance half value [Oe] of the YIG, Pn is a thermal noise level [dBm/Hz] and 76.4X10 is a proportional constant of a loss of a delay line and taug (group delay time of a magnetostatic wave, variable). Thus, the SSB phase noise is minimized.

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