Tunable resonators
    1.
    发明授权
    Tunable resonators 失效
    可调谐谐振器

    公开(公告)号:US5949311A

    公开(公告)日:1999-09-07

    申请号:US18154

    申请日:1998-02-03

    IPC分类号: H01P1/215 H01P1/20 H01P1/217

    CPC分类号: H01P1/215

    摘要: In a magnetically-tunable resonator, a wave-guiding structure comprising an electromagnetic frequency filter, or component of such a filter, is placed in sufficient proximity with a magnetic structure so as to be gyromagnetically coupled therewith. The resonator is supportable of two fundamental normal modes of propagation which, in the absence of magnetic interaction are even and odd with respect to the resonator center plane of symmetry. Each normal mode possesses a spectrum of resonance frequencies. When the magnetic structure is magnetized, the formerly even and odd modes become mixed due to gyromagnetic interaction, and the resulting wave fields become elliptically polarized. With appropriate design such that the identities of the modes are preserved under conditions of resonance, this in turn results in a nonreciprocal reinforcement action in the resonator, which leads to the desired shift in resonance frequency in at least one of the two normal modes. The device is especially attractive to application in miniaturized planar microwave devices, for example MMICs, in conferring small size and weight, simplicity of structure, low power required for tuning, capability of fixed, continuous or digitally-stepped frequencies, and low-loss high-Q performance; applicable with superconducting or conventional metallic conductors.

    摘要翻译: 在磁可调谐谐振器中,包括电磁频率滤波器或这种滤波器的分量的波导结构被放置成与磁性结构足够接近以便与其进行回转磁耦合。 谐振器可支持两种基本正常传播模式,在不存在磁相互作用的情况下,相对于谐振器中心对称平面是偶数和奇数。 每个正常模式都有一个共振频率谱。 当磁结构被磁化时,由于陀螺磁相互作用,原来的偶模和奇模变得混合,并且所得到的波场变成椭圆极化。 通过适当的设计使得在共振条件下保持模式的标识,这又导致谐振器中的不可逆加强作用,这导致在两种正常模式中的至少一种中共振频率的期望偏移。 该器件特别适用于小型化平面微波器件(例如MMIC),具有小尺寸和重量,结构简单,调谐所需的低功耗,固定,连续或数字阶跃频率的能力以及低损耗高 -Q表现; 适用于超导或常规金属导体。

    Advanced ring-network circulator
    2.
    发明授权
    Advanced ring-network circulator 失效
    先进的环网环行器

    公开(公告)号:US5608361A

    公开(公告)日:1997-03-04

    申请号:US441428

    申请日:1995-05-15

    IPC分类号: H01P1/387

    CPC分类号: H01P1/387

    摘要: In an apparatus and method for forming an advanced ring-network circulator, a plurality of junctions are interconnected by a plurality of non-reciprocal phase shifters. Each junction has a predetermined inductive reactance and capacitive susceptance which renders each junction partially reflective of an incident signal in a predetermined frequency-dependent manner. The junctions are selected such that a predetermined combination of average phase shift and differential phase shift provided between junctions produces substantially ideal circulation about a designated band center, the band center being determined by the selected reactance and susceptance of the junctions. The phase shifters are selected to provide an ideal combination of average phase shift and differential phase shift for providing substantially ideal circulation within a frequency band about the band center in a predetermined frequency dependent manner. The invention is amenable to miniaturization, operation with self-biased and reversible magnetic structures, and operation with superconducting components.

    摘要翻译: 在用于形成高级环网循环器的装置和方法中,多个结通过多个非互易移相器相互连接。 每个结具有预定的电感和电容电纳,其使每个结点以预定的频率相关方式部分反射入射信号。 结点被选择为使得在结之间提供的平均相移和差分相移的预定组合在指定的带中心周围产生基本上理想的循环,所述频带中心由所选择的接点的电抗和电纳确定。 选择移相器以提供平均相移和差分相移的理想组合,以便以预定的频率依赖的方式在频带周围的频带内提供基本上理想的循环。 本发明适于小型化,具有自偏置和可逆磁性结构的操作,以及具有超导部件的操作。

    Planar gyrator
    3.
    发明授权
    Planar gyrator 失效
    平面旋转器

    公开(公告)号:US5903198A

    公开(公告)日:1999-05-11

    申请号:US902702

    申请日:1997-07-30

    申请人: Jerald A. Weiss

    发明人: Jerald A. Weiss

    IPC分类号: H01P1/32

    CPC分类号: H01P1/32

    摘要: In a planar gyrator, parallel transmission lines are positioned proximal to a magnetized gyrotropic substrate. Input and output transducers couple the ends of the transmission lines to corresponding input and output ports. The input and output transducers are configured to excite first and second partial wave fields on the transmission lines of similar or different phases respectively. The wave fields, in turn, interact gyromagnetically with the substrate, such that the resultant difference in phase change for a first wave propagating from the first to the second port and a second wave propagating from the second to the first port is an odd-integer multiple of 180 degrees. Alternatively, if the magnetization of the substrate is reversed, the phase of a wave propagating from the first to the second port is changed by 180 degrees. The planar gyrator is amenable to application in miniaturized planar microwave devices, for example as a magnetically-controlled phaser or switch, or as a component in a circulator or isolator implemented in planar microwave technology.

    摘要翻译: 在平面旋转器中,平行传输线位于磁化旋转基板的近侧。 输入和输出传感器将传输线的两端耦合到相应的输入和输出端口。 输入和输出换能器被配置为分别在类似或不同相位的传输线上激发第一和第二部分波场。 波场又与基板进行陀螺磁场相互作用,使得从第一端口传播到第二端口的第一波的相位变化的结果差和从第二端口传播到第一端口的第二波是奇整数 180度的倍数。 或者,如果基板的磁化反转,则从第一端口传播到第二端口的波的相位改变180度。 平面旋转器适用于微型平面微波装置,例如作为磁控相移器或开关,或作为在平面微波技术中实现的循环器或隔离器中的部件。