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1. 发明授权

US4887052A Tuned oscillator utilizing thin film ferromagnetic resonator 失效
标题翻译：使用薄膜铁磁谐振器的调谐振荡器
公开(公告)号：US4887052A
公开(公告)日：1989-12-12
申请号：US276146
申请日：1988-11-25
申请人： Yoshikazu Murakami , Yasuyuki Mizunuma , Takahiro Ohgihara , Hiroyuki Nakano , Kanako Niikura , Tsutomu Okamoto
发明人： Yoshikazu Murakami , Yasuyuki Mizunuma , Takahiro Ohgihara , Hiroyuki Nakano , Kanako Niikura , Tsutomu Okamoto
IPC分类号： H03B1/00 , H03B5/04 , H03B5/18 , H03D7/16
CPC分类号： H03B5/1894 , H03B2201/0241 , H03B5/04 , H03D7/161
摘要： A tuned oscillator utilizing a thin film ferromagnetic resonator is disclosed. The oscillator comprises an active element for oscillator and a YIG thin film resonator connected to the active element as a part of feed-back circuit for the active element. The YIG thin film resonator is applied with a bias magnetic field perpendicular to a surfce of a YIG disk which is generated by a permanent magnet for a fixed component and a coil for a variable component for the resonance frequency. The resonance frequency is stabilized by use of a PLL circuit connected to an output of the oscillator and feeding back to the coil. Since the YIG thin film tuned oscillator has a high Q value, high quality communication signal processing can be achieved. The YIG tuned oscillator is used as local oscillator for a transciever.

2. 发明授权

US4945324A Thin film ferromagnetic resonance tuned filter 失效
标题翻译：薄膜铁磁谐振调谐滤波器
公开(公告)号：US4945324A
公开(公告)日：1990-07-31
申请号：US326430
申请日：1989-03-17
申请人： Yoshikazu Murakami , Takahiro Ohgihara , Kanako Niikura , Yasuyuki Mizunuma , Hiroyuki Nakano
发明人： Yoshikazu Murakami , Takahiro Ohgihara , Kanako Niikura , Yasuyuki Mizunuma , Hiroyuki Nakano
IPC分类号： H01P1/218
CPC分类号： H01P1/218
摘要： In a thin film ferromagnetic resonance tuned filter is disclosed which comprises a ferrimagnetic thin films, input and output signal transmission lines respectively coupled with the ferrimagnetic thin films, and a magnetic circuit for applying a DC magnetic field to the ferrimagnetic thin films, the present invention expands the variable frequency band by forming extensions each extending from the signal transmission line so that the distance from the coupling point of the signal transmission line coupled with the corresponding ferrimagnetic thin film to the grounded end thereof is 1/10 or above and less than 1/4 the wavelength of a wave transmitted in the transmission lines at the upper limit frequency of a tuning frequency band. Further the deterioration of the isolation characteristics is suppressed by bending the extended portions not to form parallel portions to another transmission line.
摘要翻译：本发明公开了一种薄膜铁磁谐振调谐滤波器，其包括铁氧体薄膜，分别与铁磁薄膜耦合的输入和输出信号传输线以及用于向铁磁性薄膜施加直流磁场的磁路通过形成从信号传输线延伸的扩展扩展可变频带，使得从与相应的铁磁性薄膜耦合到其接地端的信号传输线的耦合点的距离为1/10以上且小于1 / 4是在调谐频带的上限频率处在传输线中传输的波的波长。此外，通过弯曲延伸部分而不形成平行部分到另一传输线来抑制隔离特性的劣化。

3. 发明授权

US4873496A Tuned oscillator 失效
标题翻译：调谐振荡器
公开(公告)号：US4873496A
公开(公告)日：1989-10-10
申请号：US281289
申请日：1988-12-08
申请人： Takahiro Ohgihara , Yoshikazu Murakami , Yasuyuki Mizunuma , Hiroyuki Nakano
发明人： Takahiro Ohgihara , Yoshikazu Murakami , Yasuyuki Mizunuma , Hiroyuki Nakano
IPC分类号： H03B5/40 , H01P3/08 , H03B1/00 , H03B5/18 , H03B19/00
CPC分类号： H03B5/1894 , H03B19/00 , H03B2201/0241 , H03B5/1852
摘要： A tuned oscillator is disclosed which consists of an active element for oscillation, a ferrimagnetic resonant element connected to part of feedback of the active element, and a matching circuit connected to the active element. The matching cirucit is designed to reflect the fundamental wave produced by the ferrimagnetic resonant element and active and pass the second harmonic wave. Consequently, the magnetic circuit has its load reduced in applying a D.C. magnetic field necessary for frequency tuning to the ferrimagnetic resonance element.

4. 发明授权

US4755780A Ferromagnetic resonator having temperature compensation means using pre-coded compensation data 失效
标题翻译：具有使用预编码补偿数据的温度补偿装置的铁磁谐振器
公开(公告)号：US4755780A
公开(公告)日：1988-07-05
申请号：US101646
申请日：1987-09-28
申请人： Seigo Ito , Yoshikazu Murakami , Tomikazu Watanabe , Takahiro Ohgihara
发明人： Seigo Ito , Yoshikazu Murakami , Tomikazu Watanabe , Takahiro Ohgihara
IPC分类号： G01N24/00 , H01F7/20 , H01P1/215 , H01P1/218 , H01P1/30 , H01P7/00
CPC分类号： H01P1/218 , H01P1/30
摘要： A ferrimagnetic resonator is disclosed which is stabilized upon temperature deviation and operable over a wide frequency range. The resonator comprises a ferrimagnetic thin film resonance element, a temperature detector for the resonance element a bias magnetic field generating coil, a compensation coil and a compensation circuit. The compensation circuit has a pre-coded compensation data upon operation temperature range and generates a compensation signal in response a detected temperature of the resonance element. The compensation signal is then fed to the compensation coil to generate an additional magnetic field to the resonance element thus the resonance frequency of the resonance element is stabilized upon temperature.
摘要翻译：公开了一种亚铁磁共振器，其在温度偏差下稳定并且可在宽的频率范围上操作。谐振器包括铁氧体薄膜谐振元件，用于谐振元件的温度检测器，偏置磁场产生线圈，补偿线圈和补偿电路。补偿电路在操作温度范围内具有预编码的补偿数据，并根据谐振元件的检测温度产生补偿信号。然后将补偿信号馈送到补偿线圈以产生对谐振元件的附加磁场，因此谐振元件的谐振频率在温度下稳定。

5. 发明授权

US5633610A Monolithic microwave integrated circuit apparatus 失效
标题翻译：单片微波集成电路设备
公开(公告)号：US5633610A
公开(公告)日：1997-05-27
申请号：US536245
申请日：1995-09-29
申请人： Itaru Maekawa , Takahiro Ohgihara , Kuninobu Tanaka
发明人： Itaru Maekawa , Takahiro Ohgihara , Kuninobu Tanaka
IPC分类号： H03D7/12 , H03F1/30 , H03F3/193 , H03F3/21 , G06G7/14
CPC分类号： H03F3/211 , H03D7/125 , H03F1/301 , H03F3/1935
摘要： A monolithic microwave semiconductor integrated circuit including a bias stabilizing circuit of a current mirror type formed of a bias control transistor formed of an enhancement mode compound semiconductor field effect transistor and a biased transistor formed of an enhancement mode compound semiconductor field effect transistor.
摘要翻译：一种单片微波半导体集成电路，包括由增强型化合物半导体场效应晶体管形成的偏置控制晶体管和由增强型化合物半导体场效应晶体管形成的偏置晶体管形成的电流镜型偏压稳定电路。

6. 发明授权

US5486787A Monolithic microwave integrated circuit apparatus 失效
标题翻译：单片微波集成电路设备
公开(公告)号：US5486787A
公开(公告)日：1996-01-23
申请号：US179048
申请日：1994-01-07
申请人： Itaru Maekawa , Takahiro Ohgihara , Kuninobu Tanaka
发明人： Itaru Maekawa , Takahiro Ohgihara , Kuninobu Tanaka
IPC分类号： H03D7/12 , H03F1/30 , H03F3/193 , H03F3/21 , H03F1/00 , H02J1/00
CPC分类号： H03F3/211 , H03D7/125 , H03F1/301 , H03F3/1935
摘要： A monolithic microwave semiconductor integrated circuit including a bias stabilizing circuit of a current mirror type formed of a bias control transistor formed of an enhancement mode compound semiconductor field effect transistor and a biased transistor formed of an enhancement mode compound semiconductor field effect transistor.
摘要翻译：一种单片微波半导体集成电路，包括由增强型化合物半导体场效应晶体管形成的偏置控制晶体管和由增强型化合物半导体场效应晶体管形成的偏置晶体管形成的电流镜型偏压稳定电路。

7. 发明授权

US5900765A Bias circuit 失效
标题翻译：偏置电路
公开(公告)号：US5900765A
公开(公告)日：1999-05-04
申请号：US811948
申请日：1997-03-05
申请人： Hidetoshi Kawasaki , Takahiro Ohgihara
发明人： Hidetoshi Kawasaki , Takahiro Ohgihara
IPC分类号： G05F3/20 , H03F1/30 , G06G7/12
CPC分类号： G05F3/205 , H03F1/301
摘要： A transistor-bias voltage stabilizing circuit comprises a current saturating resistor connected in series to the output of an FET, the gate bias voltage of which is to be stabilized and a capacitor connected in parallel to the current saturating resistor. The transistor-bias voltage stabilizing circuit may comprise a voltage detecting circuit and a negative-feedback circuit connected between the input and output of an FET, the gate bias voltage of which is to be stabilized.
摘要翻译：晶体管偏置稳压电路包括与FET的输出串联连接的电流饱和电阻器，其栅极偏置电压将被稳定，并且电容器并联连接到电流饱和电阻器。晶体管偏压稳定电路可以包括电压检测电路和连接在FET的输入和输出之间的负反馈电路，其栅极偏置电压将被稳定。

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