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公开(公告)号：US07403756B1
公开(公告)日：2008-07-22
申请号：US11603392
申请日：2006-11-22
CPC分类号： H04B1/0096 , H04B1/0007 , H04B1/18 , H04B1/30
摘要： The present invention is directed to a highly-integrated MEMS-based miniaturized transceiver. The transceiver utilizes a low band front-end to direct sample low band signals and a high band front-end to translate high band signals that cannot be directly sampled to low band before low band front-end processing. The low band front-end comprises an array of High-Q MEMS (microelectromechanical systems)-based filters/resonators separated by isolation amplifiers in selectable cascade with narrower bandwidth filters. Dynamic tuning ability is provided through the isolation amplifiers and the sample frequency of the analog-to-digital converter. This architecture is amenable to monolithic fabrication. The input frequency range is scalable with analog-to-digital conversion sampling rate improvements. Re-utilization of filters is spatially efficient and cost effective. Tuning time is limited only by the analog-to-digital conversion and digital signal processing, not synthesizer settling times. This architecture eliminates major sources of traditional intermodulation distortion and reduces complex hardware, increasing reliability.
摘要翻译： 本发明涉及一种高度集成的基于MEMS的小型化收发器。 收发器利用低频前端来引导采样低频带信号和高频带前端，以便在低频带前端处理之前，将不能直接采样到低频段的高频带信号进行转换。 低频带前端包括由具有窄带宽滤波器的可选级联的隔离放大器隔开的高Q MEMS（微机电系统）基滤波器/谐振器阵列。 通过隔离放大器和模数转换器的采样频率提供动态调谐能力。 这种架构适合于单片制造。 输入频率范围可以通过模数转换采样率提升来扩展。 过滤器的再利用在空间上是有效的并且具有成本效益。 调谐时间仅限于模数转换和数字信号处理，而不是合成器建立时间。 该架构消除了传统互调失真的主要来源，并降低了复杂的硬件，提高了可靠性。
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2.发明授权公开(公告)号：US07957451B1
公开(公告)日：2011-06-07
申请号：US12074799
申请日：2008-03-06
申请人： David K. Baugh , Joseph F. Jiacinto , Robert J. Frank , Michael N. Newhouse , Dana J. Jensen , Kent D. Benson , Daniel M. Zange , Gunther B. Frank , Bruce S. Kloster , Richard L. Robertson , Karl F. Hoech
发明人： David K. Baugh , Joseph F. Jiacinto , Robert J. Frank , Michael N. Newhouse , Dana J. Jensen , Kent D. Benson , Daniel M. Zange , Gunther B. Frank , Bruce S. Kloster , Richard L. Robertson , Karl F. Hoech
IPC分类号： H04B1/00
CPC分类号： H04B1/7143
摘要： A spread spectrum communication system includes a transceiver configured to transmit a spread spectrum waveform. The spread spectrum waveform comprises transmitted signals at varying frequencies within a radio frequency spectrum of operation. The frequency variation is controlled according to a hopping sequence. A spectral sensor of the communication system is configured to dynamically scan the radio frequency spectrum of operation and to generate channel occupancy data based upon the scans. A real time hopping sequence generator is configured to dynamically generate the hopping sequence in real time as a function of the channel occupancy data.
摘要翻译： 扩频通信系统包括被配置为发射扩频波形的收发器。 扩频波形包括在操作的射频频谱内的变化频率的发射信号。 根据跳频序列控制频率变化。 通信系统的光谱传感器被配置为动态地扫描操作的射频频谱并且基于扫描生成信道占用数据。 实时跳频序列生成器被配置为根据信道占用数据实时动态生成跳频序列。
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公开(公告)号：US09554352B1
公开(公告)日：2017-01-24
申请号：US11800132
申请日：2007-05-04
摘要： A mobile radio has more than one channel, each channel corresponding to a programmable transceiver circuit. The mobile radio also includes at least one high gain antenna coupled to at least one of the programmable transceiver circuits. A location determining circuit is configured to determine the location of the mobile radio. A processor is coupled to the transceivers and to the location determining circuit. The processor runs a program logic that is configured to identify whether the mobile radio is in a location that enables the mobile radio to extend the reach of the network both due to its location and due to the use of the at least one high gain antenna. The processor also runs a program logic to carry out spectrum sensing to identify available spectral resources based on communication traffic on various frequency bands.
摘要翻译： 移动无线电具有多于一个信道，每个信道对应于可编程收发器电路。 移动无线电还包括耦合到至少一个可编程收发器电路的至少一个高增益天线。 位置确定电路被配置为确定移动无线电的位置。 处理器耦合到收发器和位置确定电路。 处理器运行程序逻辑，其被配置为识别移动无线电是否处于使移动无线电能够由于其位置以及由于使用至少一个高增益天线而延伸网络的覆盖范围的位置。 处理器还运行程序逻辑以执行频谱感测以基于各种频带上的通信业务来识别可用的频谱资源。
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