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41. 发明专利

JP2003283290A Surface acoustic wave device and communication apparatus having the same 审中-公开
标题翻译：表面声波装置及其通信装置
公开(公告)号：JP2003283290A
公开(公告)日：2003-10-03
申请号：JP2002348949
申请日：2002-11-29
申请人： Murata Mfg Co Ltd , 株式会社村田製作所
发明人： TAKAMINE YUICHI
IPC分类号： H03H9/145 , H03H9/00 , H03H9/10 , H03H9/25 , H03H9/64 , H03H9/68
CPC分类号： H03H9/0071 , H03H9/14582
摘要： PROBLEM TO BE SOLVED: To provide a surface acoustic wave device improved about its VSWR and the deviation in its pass band, and a communication apparatus having the same. SOLUTION: The device comprises two surface acoustic wave filters 1, 2 involving at least three or more odd number of IDTs arranged in a propagating direction of surface acoustic waves on a piezoelectric substrate. The filters 1, 2 provide output signals with mutually different phases of about 180° from input signals and have balanced-to-unbalanced conversion functions. If the number of the IDTs is N, (N-1)/2+1 IDTs are connected to unbalanced signal terminals 13, and (N-1)/2 IDTs are connected to balanced signal terminals 14, 15 of the filters 1, 2, respectively. Each filter 1, 2 has 71 or more electrode fingers of the IDTs in total. If the electrode fingers of the IDTs connected to the unbalanced signal terminals 14, 15 of each filter 1, 2 total to N1 and the electrode fingers of the IDTs connected to the balanced signal terminal total to N2, then they satisfy the relation N1>N2. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种改善其VSWR和其通带偏差的弹性表面波装置，以及具有该弹性波装置的通信装置。解决方案：该装置包括两个表面声波滤波器1,2，其包括在压电基片上以声表面波的传播方向布置的至少三个或更多奇数个IDT。滤波器1,2提供具有与输入信号约180°的相互不同相位的输出信号，并且具有平衡到不平衡的转换功能。如果IDT的数量为N，则将（N-1）/ 2 + 1个IDT连接到不平衡信号端子13，并且将（N-1）/ 2个IDT连接到滤波器1的平衡信号端子14,15， 2。每个滤光器1,2总共具有71个或更多个IDT的电极指。如果连接到每个滤波器1,2的不平衡信号端子14,15的总数为N1的IDT的电极指和连接到平衡信号端的IDT的电极指总数为N2，那么它们满足关系N1> N2 。版权所有（C）2004，JPO

42. 发明专利

JP2615020B2 失效
公开(公告)号：JP2615020B2
公开(公告)日：1997-05-28
申请号：JP20550686
申请日：1986-09-01
IPC分类号： H01L41/257 , G01H3/00 , G01H9/00 , H01L41/18 , H03H3/08 , H03H9/25 , H03H9/68 , H04R17/00 , H01L41/22

43. 发明专利

JPH01318402A MSW CHANNELIZER 失效
公开(公告)号：JPH01318402A
公开(公告)日：1989-12-22
申请号：JP15260088
申请日：1988-06-20
申请人： MURATA MANUFACTURING CO
发明人： NISHIKAWA TOSHIO , TANAKA HIROAKI , NIIMURA SATORU
IPC分类号： H01P1/213 , H01P1/215 , H01P1/218 , H03H3/08 , H03H9/68
摘要： PURPOSE:To reduce the size of a channelizer and to improve the productivity of the channelizer by applying the magnetic fields of different intensities to a YIG thin film prepared between a 1st antenna and plural 2nd antennas and therefore forming plural filters having different pass frequency bands on a signal YIG thin film. CONSTITUTION:A stepped magnet 22 is set on a YIG thin film 14 and therefore the magnetic fields of different intensities are applied between a 1st antenna 18 and each of 2nd antennas 20 of the film 14 respectively. When such an MSW (magneto-static wave) channelizer 10 is used, both antennas 18 and 20 are grounded at a single end respectively and an input signal of a microwave, etc., is supplied through the other end of the antenna 18. This input signal functions to propagate the MSWs of different frequencies to each second antenna 20 from the antenna 18 over the film 14. As a result, plural filters are formed on a single film 14 and therefore the channelizer 10 can be miniaturized.

44. 发明专利

JPH01157582A LINBO3 SUBSTRATE WITH PARTIAL REVERSE POLARIZATION REGION, AND MANUFACTURE AND APPLICATION OF THE SAME 失效
公开(公告)号：JPH01157582A
公开(公告)日：1989-06-20
申请号：JP20550686
申请日：1986-09-01
申请人： SHIMIZU HIROSHI
发明人： SHIMIZU HIROSHI , NAKAMURA YOSHINAGA , ANDO HARUYASU
IPC分类号： H01L41/257 , G01H3/00 , G01H9/00 , H01L41/18 , H03H3/08 , H03H9/25 , H03H9/68 , H04R17/00
摘要： PURPOSE:To assure the application of the title LiNbO3 substrate to ultrasonic transducers, optical deflectors, optical modulators, or varieties of surface elastic wave devices all operative with high efficiency, by depositing a grating-shaped Ti film with a predetermined width on a +C surface of the LiNbO3 substrate, and heat-treating the film at a temperature slightly lower than the Curie temperature of the substrate to perform Ti thermal diffusion into the substrate, thereby making a thermal diffusion region with a reverse polarization. CONSTITUTION:Ti is vapor-deposited into a grating shape of the thickness of about 1000Angstrom on the +C surface of a LiMbO3z plate having a C axis perpendicular to a plate surface with a predetermined space, and is left in Ar gas including air or water vapor for 5-10 hours for a heat treatment. Temperature of the heat treatment is kept at about 1030 deg.C slightly lower than the Curie temperature (about 1150 deg.C) of LiNbO3. Thus, a reverse polarization region is formed into a grating shape just under the deposited Ti film, which region has a polarity opposite to its spontaneous polarization.

45. 发明专利

JPS6461156A MULTI-FREQUENCY DEVIATION MODULATION 失效
公开(公告)号：JPS6461156A
公开(公告)日：1989-03-08
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
摘要： PURPOSE:To contrive the simplification of a circuit configuration and the reduction in cost, by providing a rhm wave element provided with 1st, 2nd and 3rd electrodes, an amplifier and a voltage resistor converter and changing the frequency corresponding to the content of data receiving the delay time of the signal propagated through the rhm wave element. CONSTITUTION:In applying 4-bit data D0-D3 to voltage resistor converters 5a-5d, a voltage applied between a gate G and a source S of field effect transistors FETs 11,12 is changed corresponding to the voltage. Thus, since the resistance between output terminals of the FETs 11, 12 is changed, the acoustic impedance between interdigital transducers (IDT) 2b-2e and a flat electrode 3 is changed to vary the phase shift DELTAPHI of the signal via a piezoelectric ceramic board 1. The output signal of the IDT2f is fed back to the input of the amplifier 4 to form a delay line oscillator. thus, the multi-frequency deviation modulator changing the oscillated frequency fOSC of the amplifier 4 is formed corresponding to the inputted data D0-D3.

46. 实用新型

JPS5961627U JPS5961627U - 失效
公开(公告)号：JPS5961627U
公开(公告)日：1984-04-23
申请号：JP15639982
申请日：1982-10-16
IPC分类号： H03H9/145 , H03H3/08 , H03H9/68

47. 发明专利

JPS5784610A SURFACE ACOUSTIC WAVE FILTER 失效
公开(公告)号：JPS5784610A
公开(公告)日：1982-05-27
申请号：JP16046680
申请日：1980-11-14
申请人： FUJITSU LTD
发明人： KOJIMA YUUJI , FUJIWARA YOSHIAKI , ONO MASAAKI , WAKATSUKI NOBORU
IPC分类号： H03H3/08 , H03H9/02 , H03H9/64 , H03H9/68
摘要： PURPOSE:To prevent the effect of bulk waves, by locating an output transducer in series with propagating direction of waves at a location other than the opposing region with an input transducer at one side of a multistrip coupler, in a multichannel filter. CONSTITUTION:A signal from a tuner is inputted to terminals 21, 22, generated 2 surface acoustic waves are converted for transmission line at a coupler 3 and converted into electric energy. The energy passes sequentially through transducers 4, 5. First, a signal including carrier chrominance signal CC, video carrier wave PC only passes through from the filter 4, the signals around audio carrier wave is attenuated, and a signal including SC and the PC only pass at the filter 5 to attenuate signals other than the PC. The filter characteristics can be determined by selecting the crossing width of reed screen electrode of each transducer and the pitch. With the location like this, since the bulk waves passing through the coupler 3 do not give any effect on the output transducer, a surface acoustic wave filter excellent for the frequency and spurious characteristics can be achieved.

48. 发明专利

JPS5635043B1 失效
公开(公告)号：JPS5635043B1
公开(公告)日：1981-08-14
申请号：JP4382572
申请日：1972-05-04
IPC分类号： H03F13/00 , H03H9/02 , H03H9/42 , H03H9/68 , H03H9/76 , H03H9/25

49. 发明专利

JPS54160152A ELASTIC SURFACE WAVE FILTER 失效
公开(公告)号：JPS54160152A
公开(公告)日：1979-12-18
申请号：JP7106979
申请日：1979-06-06
申请人： THOMSON CSF
发明人： JIERAARU KUUSO , ORIBIE MUNAJIE , MISHIERU BAN DAN DORIISHIE
IPC分类号： H03H3/08 , H03H9/00 , H03H9/145 , H03H9/64 , H03H9/68

50. 发明专利

JPS53105337A SURFACE ELASTIC WAVE DEVICE 失效
公开(公告)号：JPS53105337A
公开(公告)日：1978-09-13
申请号：JP2036778
申请日：1978-02-23
申请人： TEKTRONIX INC
发明人： UIRIAMU SESU DOURUMONDO
IPC分类号： H03H9/25 , H03H3/08 , H03H9/02 , H03H9/68

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