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    • 2. 发明公开
    • Planar filter and filter system
    • 平面过滤器和Filtersysstem
    • EP1089374A3
    • 2002-10-09
    • EP00308030.6
    • 2000-09-15
    • KABUSHIKI KAISHA TOSHIBA
    • Terashima, YoshiakiFuke, HiroyukiKayano, HiroyukiYoshino, Hisashi
    • H01P1/203
    • H01P1/20363Y10S505/70Y10S505/701Y10S505/866
    • There is disclosed a planar filter which can variably control a pass frequency band with a high precision and which is superior in skirt property and little in ripple. A planar filter member (1) and tuning member (2) are disposed opposite to each other via a predetermined gap. The filter member (1) is structured in such a manner that an input/output portion (5) formed of a superconductor and a plurality of resonance elements (6) are formed on a substrate (4). The tuning member (2) is structured in such a manner that on the surface of a magnetic plate (7) with a permeability changing by an applied magnetic field, a plurality of dielectric thin films (8), and a plurality of electrodes (9) for applying electric fields to the dielectric thin films (8) are arranged. Each of the dielectric thin films (8) is disposed in a position opposite to a gap between the resonance elements (6) of the filter member (1), or a gap between the filter member (1) and the input/output portion (5). By applying a voltage between the electrodes (9), an effective permittivity ε of the gap between the resonance elements (6), or the gap between the resonance element (6) and the input/output portion (5) is variably controlled, and the skirt property and ripple are adjusted. Moreover, a resonance frequency of the resonance elements (6), a coupling between the resonance elements (6), and a coupling between the resonance element (6) and the input/output portion (5) may be individually and independently controlled.
    • 3. 发明公开
    • Planar filter and filter system
    • Planares Filter und Filterssstem
    • EP1089374A2
    • 2001-04-04
    • EP00308030.6
    • 2000-09-15
    • KABUSHIKI KAISHA TOSHIBA
    • Terashima, YoshiakiFuke, HiroyukiKayano, HiroyukiYoshino, Hisashi
    • H01P1/203
    • H01P1/20363Y10S505/70Y10S505/701Y10S505/866
    • There is disclosed a planar filter which can variably control a pass frequency band with a high precision and which is superior in skirt property and little in ripple.
      A planar filter member (1) and tuning member (2) are disposed opposite to each other via a predetermined gap. The filter member (1) is structured in such a manner that an input/output portion (5) formed of a superconductor and a plurality of resonance elements (6) are formed on a substrate (4). The tuning member (2) is structured in such a manner that on the surface of a magnetic plate (7) with a permeability changing by an applied magnetic field, a plurality of dielectric thin films (8), and a plurality of electrodes (9) for applying electric fields to the dielectric thin films (8) are arranged. Each of the dielectric thin films (8) is disposed in a position opposite to a gap between the resonance elements (6) of the filter member (1), or a gap between the filter member (1) and the input/output portion (5). By applying a voltage between the electrodes (9), an effective permittivity ε of the gap between the resonance elements (6), or the gap between the resonance element (6) and the input/output portion (5) is variably controlled, and the skirt property and ripple are adjusted. Moreover, a resonance frequency of the resonance elements (6), a coupling between the resonance elements (6), and a coupling between the resonance element (6) and the input/output portion (5) may be individually and independently controlled.
    • 公开了一种平面滤波器,其能够以高精度可变地控制通过频带,并且具有优异的裙带性能和较小的纹波。 平面过滤器构件(1)和调节构件(2)经由预定的间隙彼此相对设置。 过滤构件(1)的结构使得由超导体和多个谐振元件(6)形成的输入/输出部分(5)形成在基板(4)上。 调谐构件(2)的结构是这样一种方式:在磁导板(7)的表面上,通过所施加的磁场改变磁导率的磁性板(7)的表面,多个电介质薄膜(8)和多个电极 )用于向电介质薄膜(8)施加电场。 每个电介质薄膜(8)设置在与过滤构件(1)的谐振元件(6)之间的间隙相反的位置,或者过滤构件(1)和输入/输出部分 5)。 通过在电极(9)之间施加电压,谐振元件(6)之间的间隙或谐振元件(6)与输入/输出部分(5)之间的间隙的有效介电常数ε被可变地控制,并且 裙子的性质和纹理被调整。 此外,谐振元件(6)的谐振频率,谐振元件(6)之间的耦合以及谐振元件(6)与输入/输出部分(5)之间的耦合可以单独和独立地控制。