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    • 3. 发明申请
    • ANTENNA SYSTEM WITH PARASITIC ELEMENT FOR HEARING AID COMPLIANT ELECTROMAGNETIC EMISSION
    • 用于听力辅助电磁辐射的PARASITIC元件的天线系统
    • US20110312393A1
    • 2011-12-22
    • US12818288
    • 2010-06-18
    • Narendra PulimiHugh SmithIstvan Szini
    • Narendra PulimiHugh SmithIstvan Szini
    • H04W88/02H01Q19/06
    • H01Q1/52H01Q1/243H01Q1/245H01Q9/42
    • A system for production of an electromagnetic (EM) field having EM emissions mitigated at one or more predetermined locations within a Hearing Aid Compliant (HAC) measurement plane is provided. The EM field mitigation system includes a ground plane, an antenna element, and a parasitic resonator element. The antenna element is coupled to the ground plane and resonates within at least one predetermined frequency band for transmitting and receiving the radio frequency (RF) signals modulated at one or more frequencies within the at least one predetermined first frequency band. The parasitic resonator element includes at least a first leg and a second leg connected to the ground plane and located a predetermined distance from the antenna element for mitigation of the EM emissions of the antenna element at the one or more predetermined locations within the HAC measurement plane. The first leg of the parasitic resonator element is connected to the ground plane on a first side of an effective electric field mid-line laterally dividing the ground plane and the second leg of the parasitic antenna element is connected to the ground plane on a second side of the effective electric field mid-line of the ground plane.
    • 提供了一种用于生产在听力辅助(HAC)测量平面内的一个或多个预定位置处减轻的EM发射的电磁(EM)场的系统。 EM场缓解系统包括接地平面,天线元件和寄生谐振元件。 天线元件耦合到接地平面,并在至少一个预定频带内谐振,用于发送和接收在至少一个预定的第一频带内以一个或多个频率调制的射频(RF)信号。 寄生谐振元件至少包括连接到接地平面并且与天线元件隔开预定距离的第一支路和第二支路,以便在HAC测量平面内的一个或多个预定位置处减轻天线元件的EM发射 。 寄生谐振元件的第一支路在横向划分接地平面的中线的有效电场的第一侧上连接到接地平面,而第二侧的寄生天线元件的第二支路连接到接地平面 的地平面有效电场中线。
    • 4. 发明授权
    • Antenna system with parasitic element for hearing aid compliant electromagnetic emission
    • 天线系统,具有用于助听器符合电磁辐射的寄生元件
    • US08483415B2
    • 2013-07-09
    • US12818288
    • 2010-06-18
    • Narendra PulimiHugh SmithIstvan Szini
    • Narendra PulimiHugh SmithIstvan Szini
    • H01Q1/24H01Q1/38H01Q1/48H01Q9/04H01Q19/00H04B1/04H04M1/00H04R25/00
    • H01Q1/52H01Q1/243H01Q1/245H01Q9/42
    • A system for production of an electromagnetic (EM) field having EM emissions mitigated at one or more predetermined locations within a Hearing Aid Compliant (HAC) measurement plane is provided. The EM field mitigation system includes a ground plane, an antenna element, and a parasitic resonator element. The antenna element is coupled to the ground plane and resonates within at least one predetermined frequency band for transmitting and receiving the radio frequency (RF) signals modulated at one or more frequencies within the at least one predetermined first frequency band. The parasitic resonator element includes at least a first leg and a second leg connected to the ground plane and located a predetermined distance from the antenna element for mitigation of the EM emissions of the antenna element at the one or more predetermined locations within the HAC measurement plane. The first leg of the parasitic resonator element is connected to the ground plane on a first side of an effective electric field mid-line laterally dividing the ground plane and the second leg of the parasitic antenna element is connected to the ground plane on a second side of the effective electric field mid-line of the ground plane.
    • 提供了一种用于生产在听力辅助(HAC)测量平面内的一个或多个预定位置处减轻的EM发射的电磁(EM)场的系统。 EM场缓解系统包括接地平面,天线元件和寄生谐振元件。 天线元件耦合到接地平面,并在至少一个预定频带内谐振,用于发送和接收在至少一个预定的第一频带内以一个或多个频率调制的射频(RF)信号。 寄生谐振元件至少包括连接到接地平面并且与天线元件隔开预定距离的第一支路和第二支路,以便在HAC测量平面内的一个或多个预定位置处减轻天线元件的EM发射 。 寄生谐振元件的第一支路在横向划分接地平面的中线的有效电场的第一侧上连接到接地平面,而第二侧的寄生天线元件的第二支路连接到接地平面 的地平面有效电场中线。
    • 5. 发明授权
    • Antenna apparatus with inner antenna and grounded outer helix antenna
    • 天线内置天线和接地外螺旋天线
    • US07158819B1
    • 2007-01-02
    • US09606445
    • 2000-06-29
    • Narendra PulimiLi ChenVimal Natarajan
    • Narendra PulimiLi ChenVimal Natarajan
    • H04Q7/20
    • H01Q1/362H01Q1/40H01Q5/378H01Q9/30H01Q9/36H01Q11/08
    • A dual-band cellular telephone antenna. A monopole antenna is tuned to a first resonant frequency of operation. A first helical antenna is coupled to the monopole antenna and has turns surrounding the monopole antenna, where the first helical antenna is tuned to a second resonant frequency of operation. A grounded second helical antenna surrounds the first helical antenna and is formed to have an upper capacitive loading segment to tune the grounded second helical antenna at substantially the second resonant frequency of operation. The cellular telephone has a housing formed of a conductive material. A printed circuit board (PCB) has a metalized ground plane, wherein the metalized ground plane and the grounded second helical antenna are coupled to the cellular telephone housing.
    • 双频蜂窝电话天线。 单极天线被调谐到第一谐振频率。 第一螺旋天线耦合到单极天线,并且具有围绕单极天线的转向,其中第一螺旋天线被调谐到第二共振频率操作。 接地的第二螺旋天线围绕第一螺旋天线并且形成为具有上电容性负载段,以在基本上第二谐振频率处调谐接地的第二螺旋天线。 蜂窝电话具有由导电材料形成的壳体。 印刷电路板(PCB)具有金属化的接地平面,其中金属化的接地平面和接地的第二螺旋天线耦合到蜂窝式电话机壳体。
    • 7. 发明授权
    • Antenna system with channeled RF currents
    • 具有通道RF电流的天线系统
    • US06421016B1
    • 2002-07-16
    • US09694247
    • 2000-10-23
    • James P. PhillipsEric L. KrenzAndrew A. EfanovNarendra Pulimi
    • James P. PhillipsEric L. KrenzAndrew A. EfanovNarendra Pulimi
    • H01Q124
    • H01Q1/48H01Q1/245
    • An improved antenna system to channel counterpoise currents for an unbalanced antenna such as a helical monopole. A first conductor, or ground resonator, is coupled to a ground connection near the antenna and is located distally from a user to reduce electromagnetic exposure. The first conductor presents a low impedance path at an operating frequency of the antenna such that RF currents are attracted onto the first conductor. A second conductor, such as a printed circuit board or user interface circuitry, is also coupled to the ground connection of the first conductor. The second conductor presents a high impedance path at the operating frequency of the antenna such that RF currents are diverted away from the second conductor which is held closer to a user than the first conductor.
    • 改进的天线系统,用于引导不平衡天线(例如螺旋单极)的平衡电流。 第一导体或接地谐振器耦合到天线附近的接地连接并且位于远离使用者的位置以减少电磁辐射。 第一导体在天线的工作频率处呈现低阻抗路径,使得RF电流被吸引到第一导体上。 诸如印刷电路板或用户接口电路的第二导体也耦合到第一导体的接地连接。 第二导体在天线的工作频率处呈现高阻抗路径,使得RF电流被转移离开比第一导体更靠近用户的第二导体。
    • 9. 发明授权
    • Antenna with branching arrangement for multiple frequency bands
    • 天线具有多个频段的分支布置
    • US06559811B1
    • 2003-05-06
    • US10054380
    • 2002-01-22
    • Narendra PulimiChristopher P. Cash
    • Narendra PulimiChristopher P. Cash
    • H01Q136
    • H01Q21/30H01Q1/242H01Q1/362H01Q5/371H01Q9/32
    • A communication device operable in multiple frequency bands includes a branching antenna adapted to operate in at least two frequency bands. The antenna includes a first conductive element having a connection at one end for driving the antenna. The first conductive element is resonant at a first frequency. On the first conductive element, a feed point is located away from either end of the first conductive element, and particularly the driving connection point. A second conductive element is coupled to the feed point such that the second conductive element in conjunction with the portion of the first conductive element between the drive connection and the feed point is resonant at a second frequency. This allows for a more compact and versatile multi-band antenna.
    • 可在多个频带中操作的通信设备包括适于在至少两个频带中操作的分支天线。 天线包括在一端具有用于驱动天线的连接的第一导电元件。 第一导电元件以第一频率谐振。 在第一导电元件上,馈电点远离第一导电元件的任一端,特别是驱动连接点。 第二导电元件耦合到馈电点,使得第二导电元件与驱动连接和馈电点之间的第一导电元件的部分结合在第二频率处共振。 这允许更紧凑和多功能的多频带天线。