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1. 发明专利

JPH1064729A REFLEX S/N ENHANCER 失效
公开(公告)号：JPH1064729A
公开(公告)日：1998-03-06
申请号：JP22238996
申请日：1996-08-23
申请人： JAPAN BROADCASTING CORP , SHINETSU CHEMICAL CO
发明人： KUKI TAKAO , NOMOTO TOSHIHIRO , TANNO MASAYUKI , IKARI MASANORI , RIYUUOU TOSHIHIKO
IPC分类号： C30B29/28 , H01F10/28 , H03H2/00
摘要： PROBLEM TO BE SOLVED: To obtain a S/N enhancer capable of operation at 400MHz band and improvement of the figure of merit. SOLUTION: About a static magnetic wave device formed by a magnetic thin film 2, transducer 4, and a bias magnetic field, the magnetic thin film 2 is formed on the dielectric substrate 1 off angled one to five degrees from 110} face by liquid phase epitaxial method. The magnetic thin film 2 is in the saturation magnetization range of 500G-1100G and is formed on the substrate 1 in one layer or multi layer so that the angle should be |θ1 +θ2 | direction 7 of crystal of the magnetic thin film 2 and the θ2 is the angle between the vertical direction 6 in the horizontal plane of the transducer 4 and the supplied magnetic field direction 3 of the bias magnetic field against the longer side direction of the transducer 4.

2. 发明专利

JPH11251140A MAGNETOSTATIC WAVE ELEMENT 失效
公开(公告)号：JPH11251140A
公开(公告)日：1999-09-17
申请号：JP5075598
申请日：1998-03-03
申请人： SHINETSU CHEMICAL CO , JAPAN BROADCASTING CORP
发明人： IKARI MASANORI , TANNO MASAYUKI , RIYUUOU TOSHIHIKO , KUKI TAKAO , NOMOTO TOSHIHIRO
IPC分类号： C30B29/28 , H01F10/24 , H01F10/28 , H01F41/28 , H01P1/23 , H01P3/00 , H01P7/00 , H03H9/25
摘要： PROBLEM TO BE SOLVED: To provide a reflection type magnetostatic wave element which is excellent in temperature characteristics in 1-1.35 GHz band where dynamic characteristics is improved than 400 MHz band. SOLUTION: A garnet magnetic thin film for a magnetostatic wave element, a transducer 4 for exciting the magnetic thin film with magnetostatic wave, and a bias magnetic field are provided. Here, the magnetic thin film is formed on a Gd3 Ga5 O12 substrate 1 off-angled by 1-5 deg. from a surface (110) by liquid- phase epitaxial method, and with an angle between the longitudinal direction of the transducer 4 and the vertical direction relative to direction of the magnetic thin film's crystal being θ1 , while an angle between the vertical direction relative to the longitudinal direction of the transducer 4 and a magnetic field application direction of a bias magnetic field being θ2 , a range is 0 deg.

3. 发明专利

JPH1064728A MAGNETOSTATIC WAVE DEVICE 失效
公开(公告)号：JPH1064728A
公开(公告)日：1998-03-06
申请号：JP22238496
申请日：1996-08-23
申请人： SHINETSU CHEMICAL CO , JAPAN BROADCASTING CORP
发明人： IKARI MASANORI , TANNO MASAYUKI , RIYUUOU TOSHIHIKO , KUKI TAKAO , NOMOTO TOSHIHIRO
IPC分类号： C30B29/28 , H01F10/28
摘要： PROBLEM TO BE SOLVED: To obtain a magnetostatic wave device with its excited frequency shifted to the lower frequency side. SOLUTION: About a magnetostatic wave device formed by a magnetic thin film 2, transducer 4, and a bias magnetic field, the magnetic thin film 2 is formed on the substrate 1 off angled one to five degrees from 110} face by liquid phase epitaxial method. Provided that θ1 is an angle between a longer side direction 8 of the transducer 4 and a crystal direction of magnetic thin film 2 and θ2 is an angle between a vertical direction 6 against longer side direction 8 of the transducer 4 and a supplied magnetic field direction 3 of the bias magnetic field, the magnetostatic wave device is formed so that the θ1 +θ2 is in the range of 20 deg.

4. 发明专利

JPH1064727A MAGNETOSTATIC WAVE DEVICE 失效
公开(公告)号：JPH1064727A
公开(公告)日：1998-03-06
申请号：JP22237896
申请日：1996-08-23
申请人： SHINETSU CHEMICAL CO , JAPAN BROADCASTING CORP
发明人： IKARI MASANORI , TANNO MASAYUKI , RIYUUOU TOSHIHIKO , KUKI TAKAO , NOMOTO TOSHIHIRO
IPC分类号： C30B29/28 , H01F10/24 , H01F10/28
摘要： PROBLEM TO BE SOLVED: To obtain a magnetostatic wave device having good temperature characteristics and being useful for a magnetostatic wave applied microwave band filter, resonator, S/N enhancer, etc. SOLUTION: About a magnetostatic wave device composed by a garnet magnetic thin film 2 for a magnetostatic wave device, a transducer 4 to excite magnetostatic wave on the magnetic thin film 2, and a bias magnetic field 3, the garnet magnetic thin film 2 is formed on the Gd3 Ga5 O12 substrate 1 one to five degrees off angled from 110} face by liquid phase epitaxial method and the angle θ1 +θ2 shall be 20-35 deg. or -20-35 deg. (θ1 and θ2 are plus for clockwise and minus for counterclockwise) provided that θ1 is an angle between longer side direction 8 of the transducer 4 and the crystal direction 7 of the magnetic thin film 2 and θ2 is an angle between a vertical direction 6 against to longer side direction of the transducer 4 and the supplied magnetic field direction 3 of the bias magnetic field.

5. 发明专利

JP2000315902A VARIABLE PHASE SHIFTER 失效
公开(公告)号：JP2000315902A
公开(公告)日：2000-11-14
申请号：JP12248499
申请日：1999-04-28
申请人： JAPAN BROADCASTING CORP
发明人： KUKI TAKAO , NOMOTO TOSHIHIRO , FUJIKAKE HIDEO , AIDA TADAHITO
IPC分类号： G02F1/13 , H01P1/18 , H01P5/04 , H03H7/18
摘要： PROBLEM TO BE SOLVED: To provide a variable phase shifter that reduces an insertion loss by reducing a conductor loss of a conductor line. SOLUTION: The variable phase shifter is provided with a high frequency signal use conductor line 5 formed on a ceramic substrate 2, a metallic film 6 formed on a ceramic substrate 3 and acting like a ground face, and a liquid crystal/resin composite 4 placed between both the substrates 2, 3 and made of a resin and a liquid crystal dispersed in this resin in a state that the conductor line 5 and the metallic film 6 are opposed to each other.

6. 发明专利

JPH09232814A MAGNETOSTATIC WAVE BAND-STOP FILTER 失效
公开(公告)号：JPH09232814A
公开(公告)日：1997-09-05
申请号：JP3649496
申请日：1996-02-23
申请人： JAPAN BROADCASTING CORP
发明人： KUKI TAKAO , NOMOTO TOSHIHIRO
IPC分类号： H01P1/215 , H01P3/00
摘要： PROBLEM TO BE SOLVED: To attain miniaturization with a simple structure by producing a DC magnetic field in parallel with the surface of a magnetic thin film tangent to an exciting electrode and in an oblique direction to a generated high fre quency magnetic field. SOLUTION: An exciting electrode 1 is formed as a microstrip line with one end short-circuited onto a conventional dielectric board 10, an extension direction of the line is oblique to opposed faces of permanent magnets 7, 8. The magnetostatic wave band-stop filter is in operation on the MSSW/MSBVW hybrid mode by placing the exciting electrode 1 oblique to the face of the magnets. Furthermore, a YIG thin film 2 is arranged in close contact with the exciting electrode 1 and a DC magnetic field is given externally with a magnetic circuit consisting of the permanent magnets 7, 8 and a yoke 9 interlining them magnetically. Thus, the high frequency magnetic field for exciting a magnetostatic wave and he external DC magnetic field are interlined obliquely, that is, an angle between both magnetic fields is selected to be a proper angle within the range of 0 deg.

7. 发明专利

JPH0575310A THIN FERRIMAGNETIC FILM FILTER 失效
公开(公告)号：JPH0575310A
公开(公告)日：1993-03-26
申请号：JP23485791
申请日：1991-09-13
申请人： JAPAN BROADCASTING CORP
发明人： NOMOTO TOSHIHIRO
IPC分类号： H01P1/215 , H01P1/218
摘要： PURPOSE:To set an inter-resonator coupling quantity comparatively easily by coupling magnetostatic mode resonators with a magnetostatic evanescent bode waveguide part so as to adjust a magnetic field strength of an applied DC magnetic field thereby varying a propagation characteristic. CONSTITUTION:When an electromagnetic wave in a microwave band comes through a strip line 5, a DC magnetic field acts in the inside of a body thin ferrimagnetic film 9 of a region I in contact with the line 5 to generate a magnetostatic surface wave and it is orthogonal to a DC magnetic field 10 at a part of the line 5 in contact with the body thin ferrimagnetic film. Then the thin magnetic film is cut off in a direction tilted by e.g. 45 deg. in the travelling direction at a side ridge of the region I progressed in the direction of the arrow, the thin film is cut with a tilt similarly even at a backward side ridge of the region I, and the magnetic field at the forward side ridge is replaced with a weak applied DC magnetic field 11 orthogonal thereto. Since the magnetostatic surface wave propagated in the region I is reflected repetitively between the side ridges in parallel in forward/backward directions and resonated, the magnetostatic mode resonators are coupled by a magnetostatic evanescent mode waveguide part to adjust the applied DC magnetic field strength.

8. 发明专利

JPH0541605A MAGNETOSTATIC WAVE S/N ENHANCER 失效
公开(公告)号：JPH0541605A
公开(公告)日：1993-02-19
申请号：JP21661091
申请日：1991-08-02
申请人： JAPAN BROADCASTING CORP
发明人： NOMOTO TOSHIHIRO
IPC分类号： H01P1/23
摘要： PURPOSE:To improve the S/N of a desired wave without incurring increase in the quantity of use of YIG thin film and a large sized magnetic circuit used to supply a DC magnetic field. CONSTITUTION:A signal inputted from an input terminal 1 propagates to a microstrip line 4 on a dielectric board 8 via a directional coupler 3. While the other end of the microstrip line 4 is short-circuited, the characteristic impedance is coincident with the radiation impedance of an MSW and when a signal of a level lower than the saturation level or below is not almost reflected. When the level of an input signal is at a saturation level or over, the matching at the conversion section is deteriorated, the reflection quantity is increased and a large signal appears at an output terminal 2.

9. 发明专利

JPH04304701A COUPLING CAVITY FILTER 失效
公开(公告)号：JPH04304701A
公开(公告)日：1992-10-28
申请号：JP6857291
申请日：1991-04-01
申请人： JAPAN BROADCASTING CORP
发明人： SUGINOSHITA FUMIYASU , NOMOTO TOSHIHIRO , YAZAWA NORIHIKO
IPC分类号： H01P11/00 , H01P1/207 , H01P1/208 , H01P1/30
摘要： PURPOSE:To make the electric characteristic stable by the method wherein the iris plate is not deformed even when the temperature of the iris plate is changed. CONSTITUTION:In a coupling cavity filter comprising plural cavity sections 1, 2 and an iris plate 5a forming a cavity resonator are made of different kinds of metals, a thin plate 15 formed with a thin plate having a coupling hole opening 14 and a thick section 16 formed to have an inner diameter a little larger than an outer diameter of the cavity sections 1, 2 in a heated state to an outer circumferential part of the thin plate 15 form the iris plate 5a and the iris plate 5a is inserted between the cavity sections 1, 2 and they are fixed and connected so that the inner circumference of the thick part 16 is in press contact with the outer circumference of the cavity sections 1, 2 while the iris plate 5a and the cavity sections 1, 2 are heated.

10. 发明专利

JPH03253104A CIRCULARLY POLARIZED WAVE FEEDING CIRCUIT 失效
公开(公告)号：JPH03253104A
公开(公告)日：1991-11-12
申请号：JP4923490
申请日：1990-03-02
申请人： JAPAN BROADCASTING CORP
发明人： NAKAKITA HISAO , NOMOTO TOSHIHIRO
IPC分类号： H01P1/161 , H01P1/02 , H01P1/17
摘要： PURPOSE:To simplify the production of the circularly polarized wave feeding circuit and to easily adjust the circuit by arranging plural pairs of adjusting screws for adjusting the phase speeds of polarizing faces intersecting with each other at right angles at proper intervals on the side of a circular waveguide so as to be mutually opposed along a tube axis direction. CONSTITUTION:The feeding circuit is constituted of the circular waveguide 1 consisting of a bent waveguide part 1A and a straight waveguide part 1B, plural cylindrical parts 2 arranged on the side of the waveguide part 1B with proper intervals so as to be mutually opposed along the tube axis direction and plural adjusting screws 3 screwed into inside screws formed on respective cylindrical parts 2. Thus, the quantity of insertion of the screws 3 arranged as mentioned above can easily be changed. Consequently, a circularly polarized wave suppressed at its deterioration of an axial ratio can be fed, the troubles of convensional technique can be effectively resolved and the circuit can be simply produced and easily adjusted.

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