会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Super shielding of finite length structures in open magnetic and electric systems
    • 开放式磁力和电气系统中有限长度结构的超级屏蔽
    • US06236203B1
    • 2001-05-22
    • US09162005
    • 1998-09-28
    • Shmaryu M. ShvartsmanRobert W. BrownHiroyuki FujitaMichael A. MorichLabros S. Petropoulos
    • Shmaryu M. ShvartsmanRobert W. BrownHiroyuki FujitaMichael A. MorichLabros S. Petropoulos
    • G01R3320
    • G01R33/4215
    • Methods of designing an active shield for substantially zeroing an electro-magnetic field on one side of a predetermined boundary in open magnetic resonance imaging systems and in open electric systems are provided. The methods include defining a finite length geometry for a primary structure which, in the case of zeroing a magnetic field, carries a first current distribution on its surface. A finite length geometry is also defined for a secondary structure which, in the case of zeroing a magnetic field, carries a second current distribution on its surface. In the case of zeroing an electric field, the current distributions are replaced with charge distributions. A total magnetic or electric field resulting from a combination of the first and second current or charge distributions respectively is constrained such that normal components (in the magnetic field case) or tangential components (in the electric field case) thereof substantially vanish at the surface of one of the primary and secondary structures. The first current or charge distribution is constrained to the surface of the primary structure, and the second current or charge distribution is constrained to the surface of the secondary structure. The first and second current or charge distributions are then calculated concurrently allowing both the first and second current or charge distributions to vary while observing the constraints such that a predetermined magnetic or electric field is achieved in a first region and a magnetic or electric field on one side of a predetermined boundary is substantially zeroed.
    • 提供了在开放式磁共振成像系统和开放式电气系统中设计用于使预定边界的一侧上的电磁场基本归零的有源屏蔽的方法。 这些方法包括为初级结构定义有限长几何形状,在使磁场归零的情况下,其在其表面上承载第一电流分布。 还对二次结构定义了有限长几何形状,在二次结构的归零的情况下,在其表面上承载第二电流分布。 在电场归零的情况下,电流分布被电荷分布替代。 分别由第一和第二电流或电荷分布的组合产生的总磁场或电场被约束,使得正常分量(在磁场情况下)或切向分量(在电场情况下)基本上消失在 主要和次要结构之一。 第一电流或电荷分布被约束到初级结构的表面,并且第二电流或电荷分布被约束到二级结构的表面。 然后同时计算第一和第二电流或电荷分布,同时允许第一和第二电流或电荷分布同时观察约束,使得在第一区域中实现预定的磁场或电场,并且在一个区域上实现磁场或电场 预定边界的一侧基本为零。
    • 5. 发明授权
    • Technique for designing distributed radio frequency coils and
distributed radio frequency coils designed thereby
    • 用于设计分布式射频线圈和由此设计的分布式射频线圈的技术
    • US5689189A
    • 1997-11-18
    • US638203
    • 1996-04-26
    • Michael A. MorichLabros S. PetropoulosHiroyuki FujitaShmaryu ShvartsmanRobert W. Brown
    • Michael A. MorichLabros S. PetropoulosHiroyuki FujitaShmaryu ShvartsmanRobert W. Brown
    • A61B5/055G01R33/34G01V3/00
    • G01R33/341
    • A localized coil (30) is disposed in the temporally constant magnetic field of a magnetic resonance imaging system. The localized coil is designed in five steps: a static problem formulation step, a static current solution step, a discretization step, a current loop connection step, and a high frequency solution step. One radio frequency coil designed by this process to be carried on a circularly cylindrical former includes two coil sections (60, 62) disposed on opposite sides of the dielectric former. Each of the two coil sections includes a pair of inner loops (64.sub.1, 64.sub.2) disposed symmetrically relative to a z=0 plane of symmetry and a second pair of loops (68.sub.1, 68.sub.2) also disposed symmetrically about the plane of symmetry. To raise self-resonance frequency, the inner and outer loops are connected in parallel. The resonance frequency is fine-tuned with reactive elements (66.sub.1, 66.sub.2). To ensure balanced current flow between the two coil portions, the two portions are connected (78) in parallel.
    • 局部线圈(30)设置在磁共振成像系统的时间上恒定的磁场中。 局部线圈设计有五个步骤:静态问题制定步骤,静态电流解决步骤,离散化步骤,电流环路连接步骤和高频解决步骤。 通过该工艺设计的一个射频线圈被承载在圆柱形成形器上,包括设置在电介体的相对侧上的两个线圈部分(60,62)。 两个线圈段中的每一个包括一对相对于z = 0对称平面对称设置的内环(641,642),以及也围绕对称平面对称设置的第二对环(681,682)。 为了提高自谐振频率,内环和外环并联。 谐振频率与无功元件(661,662)进行微调。 为了确保两个线圈部分之间的平衡电流流动,两个部分平行连接(78)。
    • 9. 发明授权
    • Wireless communication apparatus having wireless communication functions conforming to incompatible communication standards
    • 具有符合不兼容通信标准的无线通信功能的无线通信装置
    • US08005504B2
    • 2011-08-23
    • US11560170
    • 2006-11-15
    • Eiichi SanoHiroyuki Fujita
    • Eiichi SanoHiroyuki Fujita
    • H04M1/00
    • H04W52/42H04B7/0602H04B7/0805H04B7/0825H04M2250/02H04M2250/06
    • A wireless communication apparatus is provided. The wireless communication apparatus includes wireless communication functions conforming to incompatible first and second communication standards. The wireless communication apparatus includes a first transceiver that performs a wireless communication operation conforming to the first communication standard and includes a first transmission/reception port, a second transceiver that performs a wireless communication operation conforming to the second communication standard and includes a second transmission/reception port, a shared antenna shared by the first and the second transceivers, an antenna connecting unit that connects the shared antenna and the first and the second transmission/reception ports, and a control unit that controls the communication operations in the first and the second transceivers.
    • 提供一种无线通信装置。 无线通信装置包括符合不兼容的第一和第二通信标准的无线通信功能。 无线通信装置包括执行符合第一通信标准的无线通信操作的第一收发器,并且包括第一发送/接收端口,执行符合第二通信标准的无线通信操作的第二收发器,并且包括第二发送/ 接收端口,由第一和第二收发器共享的共享天线,连接共享天线与第一和第二发送/接收端口的天线连接单元,以及控制单元,其控制第一和第二收发器中的通信操作 收发器