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    • 93. 发明申请
    • HEADPHONE ANTENNA FOR RADIO COMMUNICATIONS DEVICE
    • 用于无线电通信设备的耳机天线
    • US20120171976A1
    • 2012-07-05
    • US13337789
    • 2011-12-27
    • Frank M. Caimi
    • Frank M. Caimi
    • H04B1/18
    • H04B1/18H01Q1/46H01Q5/335
    • A radio communications device includes a headphone assembly, which includes at least one aural speaker or transducer and a headphone cable functioning as an antenna and providing electrical signals carrying audio information to the at least one aural speaker or transducer. A signal separator coupled to the headphone cable separates the electrical signals carrying audio information transmitted to the headphone cable and radio frequency (RF) signals received from the headphone cable. A radio receiver receives the RF signals from the signal separator and converts the RF signals to electrical signals carrying audio information. A tuner is provided for tuning the headphone cable to a selected operating frequency of the radio receiver. An audio amplifier amplifies electrical signals carrying audio information from the radio receiver to be transmitted through the headphone cable to the at least one aural speaker or transducer.
    • 无线电通信设备包括耳机组件,耳机组件包括至少一个听觉扬声器或换能器以及用作天线的耳机线缆,并向至少一个听觉扬声器或换能器提供携带音频信息的电信号。 耦合到耳机线的信号分离器将承载传输到耳机线的音频信息的电信号和从耳机线缆接收的射频(RF)信号分开。 无线电接收机从信号分离器接收RF信号,并将RF信号转换成携带音频信息的电信号。 提供调谐器用于将耳机线缆调谐到无线电接收机的所选操作频率。 音频放大器将携带来自无线电接收机的音频信息的电信号放大以通过耳机线传输到至少一个听觉扬声器或换能器。
    • 94. 发明授权
    • Multimode antenna structure
    • 多模天线结构
    • US08164538B2
    • 2012-04-24
    • US12750196
    • 2010-03-30
    • Mark T. MontgomeryFrank M. CaimiMark W. Kishler
    • Mark T. MontgomeryFrank M. CaimiMark W. Kishler
    • H01Q9/16
    • H01Q1/243H01Q1/36H01Q1/521H01Q1/523H01Q3/2617H01Q5/15H01Q5/307H01Q5/371H01Q9/145H01Q9/16H01Q9/285H01Q9/30H01Q21/20H01Q21/28H01Q21/30
    • One or more embodiments are directed to a multimode antenna structure for transmitting and receiving electromagnetic signals in a communications device. The communications device includes circuitry for processing signals communicated to and from the antenna structure. The antenna structure is configured for optimal operation in a given frequency range. The antenna structure includes a plurality of antenna ports operatively coupled to the circuitry, and a plurality of antenna elements, each operatively coupled to a different one of the antenna ports. Each of the plurality of antenna elements is configured to have an electrical length selected to provide optimal operation within the given frequency range. The antenna structure also includes one or more connecting elements electrically connecting the antenna elements 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 are 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 without the use of a decoupling network connected to the antenna ports, and the antenna structure generates diverse antenna patterns.
    • 一个或多个实施例涉及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。 通信设备包括用于处理与天线结构通信的信号的电路。 天线结构被配置为在给定频率范围内的最佳操作。 天线结构包括可操作地耦合到电路的多个天线端口,以及多个天线元件,每个天线元件可操作地耦合到不同的一个天线端口。 多个天线元件中的每一个被配置为具有选择的电长度以在给定频率范围内提供最佳操作。 天线结构还包括电连接天线元件的一个或多个连接元件,使得一个天线元件上的电流流向连接的相邻天线元件,并且通常绕过耦合到相邻天线元件的天线端口。 流过一个天线元件和相邻天线元件的电流通常在大小上相等,使得由一个天线端口激励的天线模式通常在给定的期望信号频率范围内被另一个天线端口激发的模式电隔离,而没有 使用连接到天线端口的去耦网络,并且天线结构产生不同的天线方向图。
    • 99. 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.