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    Electrically tunable filters with dielectric varactors
    1.
    发明申请
    Electrically tunable filters with dielectric varactors 有权
    带电介质变压器的电可调滤波器

    公开(公告)号：US20050088255A1

    公开(公告)日：2005-04-28

    申请号：US10979001

    申请日：2004-11-01

    申请人： Louise Sengupta ,  Steven Stowell ,  Yongfei Zhu ,  Somnath Sengupta ,  Luna Chiu ,  Xubai Zhang

    发明人： Louise Sengupta ,  Steven Stowell ,  Yongfei Zhu ,  Somnath Sengupta ,  Luna Chiu ,  Xubai Zhang

    IPC分类号： H01G7/06 ,  H01P1/20 ,  H03H7/01

    CPC分类号： H01P1/20

    摘要： This invention provides a voltage tunable filter comprising an input connection point, an output connection point, and at least one circuit branch electrically coupled to the input connection point and the output connection point and including a voltage tunable dielectric varactor electrically connected to an inductor. The voltage tunable filter can be one of a low-pass, high-pass, band-pass, or band-stop filter. The varactor can include built-in DC blocking capacitors.

    摘要翻译： 本发明提供了一种电压可调谐滤波器，包括输入连接点，输出连接点和电耦合到输入连接点和输出连接点的至少一个电路支路，并且包括电连接到电感器的电压可调介质变容二极管。 电压可调滤波器可以是低通，高通，带通或带阻滤波器之一。 变容二极管可以包括内置的直流阻塞电容器。

    Voltage tunable varactors and tunable devices including such varactors
    6.
    发明授权
    Voltage tunable varactors and tunable devices including such varactors 有权
    电压可调变容二极管和包括这种变容二极管的可调谐装置

    公开(公告)号：US06686814B2

    公开(公告)日：2004-02-03

    申请号：US10223745

    申请日：2002-08-19

    申请人： Luna H. Chiu ,  Yongfei Zhu ,  Xubai Zhang ,  Steven C. Stowell ,  Andrey Kozyrev ,  Somnath Sengupta ,  Louise Sengupta

    发明人： Luna H. Chiu ,  Yongfei Zhu ,  Xubai Zhang ,  Steven C. Stowell ,  Andrey Kozyrev ,  Somnath Sengupta ,  Louise Sengupta

    IPC分类号： H01P118

    CPC分类号： H01P1/2016 ,  H01P1/181

    摘要： A voltage tunable dielectric varactor includes a substrate having a low dielectric constant and having generally planar surface, a tunable ferroelectric layer positioned on the generally planar surface of the substrate, and first and second electrodes positioned on a surface of the tunable ferroelectric layer opposite the generally planar surface of the substrate. The first and second electrodes are separated to form a gap therebetween. The varactor includes an input for receiving a radio frequency signal and an output for delivering the radio frequency signal. A bias voltage applied to the electrodes changes the capacitance of the varactor between the input and output thereof. Phase shifters and filters that include the varactor are also described.

    摘要翻译： 电压可调介质变容二极管包括具有低介电常数且具有大体上平坦表面的基板，位于基板的大体平坦表面上的可调铁电层，以及位于可调谐铁电层的表面上的第一和第二电极， 基板的平面。 分离第一和第二电极以在它们之间形成间隙。 变容二极管包括用于接收射频信号的输入和用于传送射频信号的输出。 施加到电极的偏置电压改变变容二极管的输入和输出之间的电容。 还描述了包括变容二极管的移相器和滤波器。

    Electrically tunable filters with dielectric varactors
    9.
    发明授权
    Electrically tunable filters with dielectric varactors 有权
    带电介质变压器的电可调滤波器

    公开(公告)号：US07145415B2

    公开(公告)日：2006-12-05

    申请号：US10979001

    申请日：2004-11-01

    申请人： Louise C. Sengupta ,  Steven C. Stowell ,  Yongfei Zhu ,  Somnath Sengupta ,  Luna H. Chiu ,  Xubai Zhang

    发明人： Louise C. Sengupta ,  Steven C. Stowell ,  Yongfei Zhu ,  Somnath Sengupta ,  Luna H. Chiu ,  Xubai Zhang

    IPC分类号： H03H7/01

    CPC分类号： H01P1/20

    摘要： This invention provides a voltage tunable filter comprising an input connection point, an output connection point, and at least one circuit branch electrically coupled to the input connection point and the output connection point and including a voltage tunable dielectric varactor electrically connected to an inductor. The voltage tunable filter can be one of a low-pass, high-pass, band-pass, or band-stop filter. The varactor can include built-in DC blocking capacitors.

    摘要翻译： 本发明提供了一种电压可调谐滤波器，包括输入连接点，输出连接点和电耦合到输入连接点和输出连接点的至少一个电路支路，并且包括电连接到电感器的电压可调介质变容二极管。 电压可调滤波器可以是低通，高通，带通或带阻滤波器之一。 变容二极管可以包括内置的直流阻塞电容器。

    Ferroelectric varactor with built-in DC blocks
    10.
    发明授权
    Ferroelectric varactor with built-in DC blocks 有权
    铁电变容二极管内置直流电阻

    公开(公告)号：US06727535B1

    公开(公告)日：2004-04-27

    申请号：US09434433

    申请日：1999-11-04

    申请人： Louise C. Sengupta ,  Steven C. Stowell ,  Yongfei Zhu ,  Somnath Sengupta

    发明人： Louise C. Sengupta ,  Steven C. Stowell ,  Yongfei Zhu ,  Somnath Sengupta

    IPC分类号： H01L2976

    CPC分类号： H01L27/016 ,  H01G7/06 ,  H01L29/93

    摘要： A voltage tunable dielectric varactor includes a tunable ferroelectric layer and first and second non-tunable dielectric layers. First and second electrodes positioned adjacent to the tunable ferroelectric layer form a tunable capacitor. A third electrode is positioned adjacent to the first non-tunable dielectric layer such that the third and first electrodes and the first non-tunable dielectric layer form a first blocking capacitor. A fourth electrode is positioned adjacent to the second non-tunable dielectric layer such that the fourth and second electrodes and the second non-tunable dielectric layer form a second blocking capacitor. The first and second electrodes can be positioned on a surface of the tunable ferroelectric layer opposite the generally planar surface of the substrate, with the first and second electrodes being separated to form a gap. The first and second non-tunable dielectric layers can also be positioned on the generally planar surface of the substrate. The third electrode can be positioned on the surface of the first non-tunable dielectric layer opposite the generally planar surface of the substrate such that the third and first electrodes form a second gap. The fourth electrode can be positioned on the surface of the second non-tunable dielectric layer opposite the generally planar surface of the substrate such that the fourth and second electrodes form a third gap.

    摘要翻译： 电压可调介质变容二极管包括可调谐铁电层和第一和第二不可调电介质层。 位于与可调谐铁电体层相邻的第一和第二电极形成可调电容器。 第三电极定位成与第一非可调电介质层相邻，使得第三电极和第一电极和第一非可调电介质层形成第一阻塞电容器。 第四电极定位成与第二非可调电介质层相邻，使得第四和第二电极和第二非可调电介质层形成第二阻塞电容器。 第一和第二电极可以位于与基板的大致平坦的表面相对的可调谐铁电层的表面上，其中第一和第二电极被分离以形成间隙。 第一和第二非可调电介质层也可以位于基底的大致平坦的表面上。 第三电极可以位于与基板的大致平坦的表面相对的第一非可调电介质层的表面上，使得第三和第一电极形成第二间隙。 第四电极可以位于与基板的大致平坦的表面相对的第二非可调电介质层的表面上，使得第四和第二电极形成第三间隙。