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    • 2. 发明授权
    • Methods for reducing near-field radiation and specific absorption rate (SAR) values in communications devices
    • US09100096B2
    • 2015-08-04
    • US14225640
    • 2014-03-26
    • SKYCROSS, INC.
    • Mark T MontgomeryFrank M CaimiPaul A Tornatta, Jr.Mark W KishlerLi Chen
    • H01Q19/06H04B1/3827H04B1/40H04B5/00
    • H04B1/3838H01Q3/26H01Q21/29H04B1/40H04B5/005H04B5/0081H04W52/18Y02D70/00Y02D70/122Y02D70/1244Y02D70/142Y02D70/146Y02D70/164Y02D70/166Y02D70/42
    • A method is provided for reducing near-field radiation and specific absorption rate (SAR) values in a communications device. The communications device includes a multimode antenna structure transmitting and receiving electromagnetic signals and circuitry for processing signals communicated to and from the antenna structure. The antenna structure includes: a plurality of antenna ports operatively coupled to the circuitry; a plurality of antenna elements, each operatively coupled to a different one of the antenna ports; and one or more connecting elements electrically connecting the antenna elements at a location on each antenna element that is spaced apart from an antenna port coupled thereto to form a single radiating structure and such that electrical currents on one antenna element flow to a connected neighboring antenna element and generally bypass the antenna port coupled to the neighboring antenna element, the electrical currents flowing through the one antenna element and the neighboring antenna element being generally equal in magnitude, such that an antenna mode excited by one antenna port is generally electrically isolated from a mode excited by another antenna port at a given desired signal frequency range and the antenna structure generates diverse antenna patterns. The method includes adjusting the relative phase between signals fed to neighboring antenna ports of the antenna structure such that a signal fed to the one antenna port has a different phase than a signal fed to the neighboring antenna port to provide antenna pattern control and to increase gain in a selected direction toward a receive point. The method features using a transmit power lower than the transmit power used in a non-pattern control operation of the antenna structure such that the communications device obtains generally equivalent wireless link performance with the receive point using reduced transmit power compared to the non-pattern control operation, thereby reducing the specific absorption rate.
    • 7. 发明申请
    • METHODS FOR REDUCING NEAR-FIELD RADIATION AND SPECIFIC ABSORPTION RATE (SAR) VALUES IN COMMUNICATIONS DEVICES
    • US20140206298A1
    • 2014-07-24
    • US14225640
    • 2014-03-26
    • SKYCROSS, INC.
    • Mark T. MontgomeryFrank M. CaimiPaul A. Tornatta, JR.Mark W. KishlerLi Chen
    • H04B1/38
    • H04B1/3838H01Q3/26H01Q21/29H04B1/40H04B5/005H04B5/0081H04W52/18Y02D70/00Y02D70/122Y02D70/1244Y02D70/142Y02D70/146Y02D70/164Y02D70/166Y02D70/42
    • A method is provided for reducing near-field radiation and specific absorption rate (SAR) values in a communications device. The communications device includes a multimode antenna structure transmitting and receiving electromagnetic signals and circuitry for processing signals communicated to and from the antenna structure. The antenna structure includes: a plurality of antenna ports operatively coupled to the circuitry; a plurality of antenna elements, each operatively coupled to a different one of the antenna ports; and one or more connecting elements electrically connecting the antenna elements at a location on each antenna element that is spaced apart from an antenna port coupled thereto to form a single radiating structure and such that electrical currents on one antenna element flow to a connected neighboring antenna element and generally bypass the antenna port coupled to the neighboring antenna element, the electrical currents flowing through the one antenna element and the neighboring antenna element being generally equal in magnitude, such that an antenna mode excited by one antenna port is generally electrically isolated from a mode excited by another antenna port at a given desired signal frequency range and the antenna structure generates diverse antenna patterns. The method includes adjusting the relative phase between signals fed to neighboring antenna ports of the antenna structure such that a signal fed to the one antenna port has a different phase than a signal fed to the neighboring antenna port to provide antenna pattern control and to increase gain in a selected direction toward a receive point. The method features using a transmit power lower than the transmit power used in a non-pattern control operation of the antenna structure such that the communications device obtains generally equivalent wireless link performance with the receive point using reduced transmit power compared to the non-pattern control operation, thereby reducing the specific absorption rate.
    • 8. 发明授权
    • Multimode antenna structure
    • 多模天线结构
    • US09401547B2
    • 2016-07-26
    • US14918895
    • 2015-10-21
    • Skycross, Inc.
    • Mark T. MontgomeryMark W. KishlerLi Chen
    • H01Q21/00H01Q21/28H01Q1/48
    • H01Q21/28H01Q1/24H01Q1/243H01Q1/36H01Q1/38H01Q1/48H01Q1/521H01Q5/0034H01Q5/321H01Q5/35H01Q5/371H01Q9/285H01Q9/30H01Q21/205H01Q21/293
    • A multimode antenna structure is provided for transmitting and receiving electromagnetic signals in a communication device. The antenna structure includes a plurality of antenna ports for coupling to the circuitry; a plurality of antenna elements, each operatively coupled to a different one of the antenna ports; and a plurality of connecting elements. The connecting elements each electrically connect neighboring antenna elements such that the antenna elements and the connecting elements are arranged about the periphery of the antenna structure and form a single radiating structure. Electrical currents on one antenna element flow to connected neighboring antenna elements and generally bypass the antenna ports coupled to the neighboring antenna elements such that an antenna mode excited by one antenna port is generally electrically isolated from a mode excited by another antenna port at a given desired signal frequency range, and the antenna structure generates diverse antenna patterns.
    • 提供了用于在通信设备中发送和接收电磁信号的多模式天线结构。 天线结构包括用于耦合到电路的多个天线端口; 多个天线元件,每个天线元件可操作地耦合到不同的一个天线端口; 和多个连接元件。 连接元件各自电连接相邻的天线元件,使得天线元件和连接元件围绕天线结构的周边布置并且形成单个辐射结构。 一个天线元件上的电流流向连接的相邻天线元件,并且通常旁路耦合到相邻天线元件的天线端口,使得由一个天线端口激励的天线模式通常与给定期望的另一个天线端口激发的模式电隔离 信号频率范围,天线结构产生不同的天线方向图。