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公开(公告)号：US09153869B1
公开(公告)日：2015-10-06
申请号：US13718628
申请日：2012-12-18
发明人： Tzung-I Lee , In Chul Hyun , Cheol Su Kim
摘要： A wideband antenna apparatus including a harmonically suppressed low band antenna is provided. The low band antenna is configured as a folded monopole antenna with patch coupling for resonance in a first frequency band. A patch portion of the low band antenna is widely separated from a folded feed portion of the low band antenna to avoid slot resonances above the first frequency band. The patch portion is relatively large to avoid folding of the patch portion that could introduce resonances above the first frequency band. The wideband antenna apparatus may also include a high band antenna proximate with the low band antenna. The high band antenna may be a folded monopole patch coupled antenna configured for resonating in a second frequency band. The high band antenna may optionally be configured like the low band antenna to suppress resonances of the high band antenna above the second frequency band.
摘要翻译： 提供了包括谐波抑制的低频带天线的宽带天线装置。 低频天线被配置为具有用于在第一频带中谐振的贴片耦合的折叠单极天线。 低频带天线的贴片部分与低频带天线的折叠馈电部分广泛分开，以避免在第一频带之上的时隙谐振。 贴片部分相对较大以避免可能引入高于第一频带的谐振的贴片部分的折叠。 宽带天线装置还可以包括靠近低频带天线的高频带天线。 高频带天线可以是被配置为在第二频带中谐振的折叠单极贴片耦合天线。 高带天线可以可选地被配置为类似于低频带天线，以抑制高频带天线高于第二频带的谐振。
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公开(公告)号：US09130279B1
公开(公告)日：2015-09-08
申请号：US13789455
申请日：2013-03-07
发明人： Tzung-I Lee , In Chul Hyun , Cheol Su Kim , Jerry Weiming Kuo
摘要： Antenna structures and methods of operating the same of a multi-feed antenna of an electronic device are described. A multi-feed antenna includes a first antenna element coupled to a first tuner circuit that is coupled a first radio frequency (RF) feed, and a second antenna element coupled to a second tuner circuit that is coupled to a second RF feed. The first tuner circuit is programmable to independently adjust a first impedance of the first antenna element and the second tuner circuit is programmable to independently adjust a second impedance of the second antenna element.
摘要翻译： 对电子设备的多馈电天线的天线结构及其操作方法进行说明。 多馈天线包括耦合到耦合到第一射频（RF）馈电的第一调谐器电路的第一天线元件和耦合到耦合到第二RF馈送的第二调谐器电路的第二天线元件。 第一调谐器电路是可编程的以独立地调整第一天线元件的第一阻抗，并且第二调谐器电路可编程以独立地调整第二天线元件的第二阻抗。
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公开(公告)号：US08878602B1
公开(公告)日：2014-11-04
申请号：US13797956
申请日：2013-03-12
CPC分类号： H04B3/32
摘要： Approaches are described for managing effects such as interference, crosstalk, and other types of noise in an electronic environment using a physical and/or electronic switch to improve antenna performance. For example, in the situation where the connector is connected to the device and no data and/or power is being transferred through the connector, the switch is caused to be open. In this situation, because the connector will be an electrically floating metal instead of a grounded metal due to the open switch, at least a portion of the radiated and/or received antenna signals will not couple to the connector. In the situation where the connector is connected to the device and is being used to transfer data and/or power, the switch is caused to be closed, which will result in the connector being grounded. In such a situation, at least a portion of the noise generated by the connector due to transferring data and/or power will be grounded instead of being coupled to the antenna.
摘要翻译： 描述了用于在使用物理和/或电子开关的电子环境中管理诸如干扰，串扰和其他类型的噪声的影响的方法，以改善天线性能。 例如，在连接器连接到设备而没有通过连接器传输数据和/或电力的情况下，开关被打开。 在这种情况下，因为由于打开的开关，连接器将是电浮置的金属而不是接地的金属，所以辐射和/或接收的天线信号的至少一部分将不会连接到连接器。 在连接器连接到设备并用于传输数据和/或电源的情况下，使开关闭合，这将导致连接器接地。 在这种情况下，由于传送数据和/或功率而由连接器产生的噪声的至少一部分将被接地，而不是耦合到天线。
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14.发明申请公开(公告)号：US20190020713A1
公开(公告)日：2019-01-17
申请号：US15650038
申请日：2017-07-14
发明人： Troy Hulick , In Chul Hyun , Tzung-I Lee
摘要： An electronic device includes a metal housing having a height greater than a width, four sides that form an inner chamber in a center thereof. Four sidewalls extend from a first back wall form a first chamber located at a first of the four sides. Four sidewalls extend from a second back wall form a second chamber located at a second of the four sides. A first antenna is disposed in the first chamber. A second antenna is disposed in the second chamber. A circuit board is disposed within the inner chamber and oriented longitudinally from a bottom of the inner chamber. A first radio is disposed on the circuit board and coupled to the first antenna. A second radio is disposed on the circuit board and coupled to the second antenna, such that the second antenna is electrically isolated from the first antenna.
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公开(公告)号：US09991914B1
公开(公告)日：2018-06-05
申请号：US15595538
申请日：2017-05-15
发明人： Tzung-I Lee , Omar Fawazhashim Zakaria , Cheol Su Kim , Varadarajan Gopalakrishnan , In Chul Hyun
CPC分类号： H04B1/0475 , H04B1/0092 , H04W52/52 , H04W84/18
摘要： Technology for a bi-directional radio frequency front-end (RFFE) architecture with high selectivity performance is described. One RFFE has a first mixer that receives a LO signal from the LO circuit and a transmit (TX) signal, having a first frequency, from a transmitter and produces a down-converted TX signal for channel bandwidth filtering, the TX signal having a second frequency that is lower than the first frequency. A programmable filter circuit, in response to a selection signal, filters the down-converted TX signal according to a selected channel bandwidth. The second mixer receives the LO signal from the LO circuit and a channel-filtered TX signal from the programmable filter circuit and produces an up-converted TX signal having the first frequency. The power amplifier amplifies the up-converted TX signal to produce an output TX signal to cause an antenna to radiate electromagnetic energy in the selected channel bandwidth.
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公开(公告)号：US09887708B2
公开(公告)日：2018-02-06
申请号：US15154314
申请日：2016-05-13
发明人： In Chul Hyun , Andrew David Price , Tzung-I Lee , Kwok Lee , Cheol Su Kim , Omar Fawazhashim Zakaria , Varadarajan Gopalakrishnan
IPC分类号： H04W88/10 , H04B1/00 , H04M1/02 , H01Q5/30 , H01Q1/24 , H01Q1/50 , H01Q21/29 , H04L29/08 , H04W40/02 , H04W84/22 , H01Q19/10 , H01Q19/185 , H01Q21/20 , H01Q21/24 , H01Q21/28 , H04W84/12 , H04W84/18
CPC分类号： H04B1/0057 , H01Q1/243 , H01Q1/50 , H01Q5/30 , H01Q19/106 , H01Q19/185 , H01Q21/205 , H01Q21/24 , H01Q21/28 , H01Q21/29 , H04L67/06 , H04L67/104 , H04L67/1091 , H04L67/1097 , H04M1/026 , H04W40/02 , H04W84/12 , H04W84/18 , H04W84/22
摘要： Network hardware devices organized in a Wireless mesh network (WMN) in which the network hardware devices cooperate in distribution of content files to client consumption devices in an environment of limited connectivity to broadband Internet infrastructure are described. One mesh network device includes a micro controller, RF radios, and antenna switching circuitry. The antenna switching circuitry, in response to the control signals from a micro controller, selectively couples individual ones of a first set of antennas to individual channels of the set of RF radios to communicate content data with client consumption devices and selectively couples individual ones of a second set of antennas to other individual channels of the set of RF radios to communicate content data with other mesh network devices in a WMN.
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公开(公告)号：US20170223090A1
公开(公告)日：2017-08-03
申请号：US15154327
申请日：2016-05-13
发明人： Varadarajan Gopalakrishnan , Andrew David Price , In Chul Hyun , Jin Dong Kim , Subram Narasimhan
摘要： Wireless mesh network (WMN) architectures of network hardware devices organized in a mesh topology in which the network hardware devices cooperate in distribution of content files to client consumption devices in an environment of limited connectivity to broadband Internet infrastructure is described. A self-contained, fully connected WMN can be used for localized delivery of content files. One WMN includes a single ingress node for ingress of content files into the wireless mesh network. The WMN also includes multiple network hardware devices wirelessly connected through a network backbone formed by multiple P2P wireless connections. A first network hardware device is wirelessly connected to a client consumption device by a first node-to-client (N2C) wireless connection and a second network hardware device is wirelessly connected to the single ingress node.
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公开(公告)号：US09698857B1
公开(公告)日：2017-07-04
申请号：US14632929
申请日：2015-02-26
CPC分类号： H04B1/401 , H01Q5/00 , H01Q7/00 , H01Q9/30 , H04B7/0413 , H04B7/0693 , H04W84/12 , H04W88/06
摘要： Antenna structures and methods of operating the same of an electronic device are described. One apparatus includes an antenna element that is self-resonant at a first frequency in a first mode and self-resonant at a second frequency in a second mode. A radio frequency (RF) is coupled between the antenna element and a ground plane. A RF circuit, coupled to the antenna element via an RF feed, is operable to control the RF switch to switch the antenna element between the first mode and the second mode. The RF circuit is operable to cause the antenna element to radiate or receive electromagnetic energy in a first radiation pattern in the first mode and to radiate or electromagnetic energy in a second radiation pattern in the second mode.
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公开(公告)号：US09307499B2
公开(公告)日：2016-04-05
申请号：US14567721
申请日：2014-12-11
发明人： Gregg Zehr , Subram Narasimhan , Varadarajan Gopalakrishnan , David C. Buuck , John Depew , In Chul Hyun
CPC分类号： H04W52/18 , H01Q1/243 , H01Q1/245 , H01Q21/28 , H04B1/3838 , H04W52/228 , H04W52/36 , H04W52/367
摘要： A user device transmits data at a first transmit power level. The user device detects a presence of a human body part within a predetermined distance from an antenna of the user device using one or more sensors disposed at a back side of the user device. In response to the detection of the presence of the human body part, the user device transmits information at a second transmit power level that is less than the first transmit power level.
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公开(公告)号：US11949634B1
公开(公告)日：2024-04-02
申请号：US17706474
申请日：2022-03-28
发明人： Nathan Labadie , Divya Naveenan , In Chul Hyun , Cheol Su Kim
CPC分类号： H04L5/1461 , H03F1/3241 , H03G3/20 , H04L5/1438 , H04B2001/0416
摘要： Technologies directed to a control circuit using dynamic signal compression are described. A control circuit includes a front-end module (FEM) coupled to an RF cable, the FEM having a low-noise amplifier (LNA). The control circuit further includes an automatic gain control (AGC) circuitry coupled to the FEM. The AGC circuitry receives a first radio frequency (RF) signal having a first portion of one or more symbols and a second portion of one or more symbols. The AGC circuitry further amplifies the first portion to generate a first portion of an output signal. The AGC circuitry further compresses the second portion to obtain a second portion of the output signal. The AGC circuitry further sends a control signal to cause the FEM to change a gain state value of the LNA from a first value to a second value based on a comparison between a voltage of the output signal and a reference voltage.
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