公开(公告)号：US06438394B1

公开(公告)日：2002-08-20

申请号：US08706974

申请日：1996-09-03

申请人： Dawei Zhang ,  Guo-Chun Liang ,  Chien-Fu Shih

发明人： Dawei Zhang ,  Guo-Chun Liang ,  Chien-Fu Shih

IPC分类号： H03H7075

CPC分类号： H01P1/20336 ,  H01P1/20381 ,  Y10S505/70 ,  Y10S505/866

摘要： The present invention provides for a super-narrow band filter using frequency dependent L-C components. The invention utilizes a frequency dependent L-C circuit with a positive slope k for the inductor values as a function of frequency. The positive k value allows the realization of a very narrow-band filter.

摘要翻译： 本发明提供一种使用频率依赖的L-C分量的超窄带滤波器。 本发明利用具有正斜率k的频率相关L-C电路作为电感值作为频率的函数。 正k值允许实现非常窄带滤波器。

公开(公告)号：US06529750B1

公开(公告)日：2003-03-04

申请号：US09285350

申请日：1999-04-02

申请人： Dawei Zhang ,  Ji-Fuh Liang ,  Chien-Fu Shih

发明人： Dawei Zhang ,  Ji-Fuh Liang ,  Chien-Fu Shih

IPC分类号： H03H701

CPC分类号： H01P1/20336 ,  H01P1/20381 ,  Y10S505/70 ,  Y10S505/866

摘要： The present invention provides for a method and apparatus to control non-adjacent cross-coupling in a micro-strip filter. In instances of weak cross-coupling, such as a filter circuit on a high dielectric constant substrate material (e.g., LaAIO3 with dielectric constant of 24), a closed loop is used to inductively enhance the cross-coupling. The closed loop increases the transmission zero levels. For strong cross-coupling cases, such as a filter circuit on a lower dielectric constant substrate material (e.g., MgO with dielectric constant of 9.6), a capacitive cross-coupling cancellation mechanism is introduced to reduce the cross-coupling. In the latter instance, the transmission zero levels are moved down.

摘要翻译： 本发明提供了一种用于控制微带滤波器中的非相邻交叉耦合的方法和装置。 在弱交叉耦合的情况下，例如高介电常数衬底材料（例如，介电常数为24的LaAlO 3）上的滤波器电路，使用闭环来感应地增强交叉耦合。 闭环增加传输零电平。 对于强交叉耦合情况，例如在较低介电常数衬底材料（例如，介电常数为9.6的MgO）上的滤波器电路，引入电容性交叉耦合消除机制以减少交叉耦合。 在后一种情况下，传输零电平向下移动。

公开(公告)号：US07317364B2

公开(公告)日：2008-01-08

申请号：US11484254

申请日：2006-07-11

申请人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

发明人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

IPC分类号： H03H7/12 ,  H01B12/02

CPC分类号： H03J1/0008 ,  H03J5/0245 ,  Y10S505/70 ,  Y10S505/866

摘要： A method and apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the capacitance in a narrow band filter circuit. A varactor such as a GaAs varactor may be used. Alternatively, a capacitor having a voltage-sensitive dielectric such as SrTiO3 may be used. A computer may be connected to the varactor to provide for automated tuning. The voltage-sensitive capacitor may be integral with the resonator element. The invention provides for remote and dynamic tuning of a narrow bandpass filter while located within its sealed cryo-cooled environment.

摘要翻译： 公开了一种用于提供低温冷却带通滤波器的动态和远程调谐的方法和装置。 该器件包括谐振元件和电压敏感元件作为窄带滤波器电路中电容的一部分。 可以使用诸如GaAs变容二极管的变容二极管。 或者，可以使用具有诸如SrTiO 3 3这样的电压敏感电介质的电容器。 计算机可以连接到变容二极管以提供自动调谐。 电压敏感电容器可以与谐振器元件成一体。 本发明提供了窄带通滤波器的远程和动态调谐，同时位于其密封的低温冷却环境中。

公开(公告)号：US07738933B2

公开(公告)日：2010-06-15

申请号：US11970695

申请日：2008-01-08

申请人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

发明人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

IPC分类号： H03H7/12 ,  H01B12/02

CPC分类号： H03J1/0008 ,  H03J5/0245 ,  Y10S505/70 ,  Y10S505/866

摘要： An apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the capacitance in a narrow band filter circuit. A varactor such as a GaAs varactor may be used. Alternatively, a capacitor having a voltage-sensitive dielectric such as SrTiO3 may be used. A computer may be connected to the varactor to provide for automated tuning. The voltage-sensitive capacitor may be integral with the resonator element. The invention provides for remote and dynamic tuning of a narrow bandpass filter while located within its sealed cryo-cooled environment.

摘要翻译： 公开了一种用于提供冷却带通滤波器的动态和远程调谐的装置。 该器件包括谐振元件和电压敏感元件作为窄带滤波器电路中电容的一部分。 可以使用诸如GaAs变容二极管的变容二极管。 或者，可以使用具有诸如SrTiO 3的电压敏感电介质的电容器。 计算机可以连接到变容二极管以提供自动调谐。 电压敏感电容器可以与谐振器元件成一体。 本发明提供了窄带通滤波器的远程和动态调谐，同时位于其密封的低温冷却环境中。

公开(公告)号：US20060250196A1

公开(公告)日：2006-11-09

申请号：US11484254

申请日：2006-07-11

申请人： Chien-Fu Shih ,  Yongming Zhang ,  Brian Moeckly

发明人： Chien-Fu Shih ,  Yongming Zhang ,  Brian Moeckly

IPC分类号： H03H7/12 ,  H01B12/02

CPC分类号： H03J1/0008 ,  H03J5/0245 ,  Y10S505/70 ,  Y10S505/866

摘要： A method and apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the capacitance in a narrow band filter circuit. A varactor such as a GaAs varactor may be used. Alternatively, a capacitor having a voltage-sensitive dielectric such as SrTiO3 may be used. A computer may be connected to the varactor to provide for automated tuning. The voltage-sensitive capacitor may be integral with the resonator element. The invention provides for remote and dynamic tuning of a narrow bandpass filter while located within its sealed cryo-cooled environment.

公开(公告)号：US07117025B2

公开(公告)日：2006-10-03

申请号：US10162531

申请日：2002-06-03

申请人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

发明人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

IPC分类号： H03H7/01

CPC分类号： H03J1/0008 ,  H03J5/0245 ,  Y10S505/70 ,  Y10S505/866

摘要： A method and apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the capacitance in a narrow band filter circuit. A varactor such as a GaAs varactor may be used. Alternatively, a capacitor having a voltage-sensitive dielectric such as SrTiO3 may be used. A computer may be connected to the varactor to provide for automated tuning. The voltage-sensitive capacitor may be integral with the resonator element. The invention provides for remote and dynamic tuning of a narrow bandpass filter while located within its sealed cryo-cooled environment.

摘要翻译： 公开了一种用于提供低温冷却带通滤波器的动态和远程调谐的方法和装置。 该器件包括谐振元件和电压敏感元件作为窄带滤波器电路中电容的一部分。 可以使用诸如GaAs变容二极管的变容二极管。 或者，可以使用具有诸如SrTiO 3 3这样的电压敏感电介质的电容器。 计算机可以连接到变容二极管以提供自动调谐。 电压敏感电容器可以与谐振器元件成一体。 本发明提供了窄带通滤波器的远程和动态调谐，同时位于其密封的低温冷却环境中。

公开(公告)号：US20090079515A1

公开(公告)日：2009-03-26

申请号：US11970695

申请日：2008-01-08

申请人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

发明人： Chien-Fu Shih ,  Yongming Zhang ,  Brian H. Moeckly

IPC分类号： H03H7/12

CPC分类号： H03J1/0008 ,  H03J5/0245 ,  Y10S505/70 ,  Y10S505/866

摘要： An apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the capacitance in a narrow band filter circuit. A varactor such as a GaAs varactor may be used. Alternatively, a capacitor having a voltage-sensitive dielectric such as SrTiO3 may be used. A computer may be connected to the varactor to provide for automated tuning. The voltage-sensitive capacitor may be integral with the resonator element. The invention provides for remote and dynamic tuning of a narrow bandpass filter while located within its sealed cryo-cooled environment.

摘要翻译： 公开了一种用于提供冷却带通滤波器的动态和远程调谐的装置。 该器件包括谐振元件和电压敏感元件作为窄带滤波器电路中电容的一部分。 可以使用诸如GaAs变容二极管的变容二极管。 或者，可以使用具有诸如SrTiO 3的电压敏感电介质的电容器。 计算机可以连接到变容二极管以提供自动调谐。 电压敏感电容器可以与谐振器元件成一体。 本发明提供了窄带通滤波器的远程和动态调谐，同时位于其密封的低温冷却环境中。