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公开(公告)号：US06798351B1
公开(公告)日：2004-09-28
申请号：US09543867
申请日：2000-04-05
申请人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
发明人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
IPC分类号： G08C1702
摘要： Frequency translation and applications of same are described herein, including RF modem and wireless local area network (WLAN) applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and filtering, and combinations and applications of same.
摘要翻译： 本文描述了频率转换及其应用，包括RF调制解调器和无线局域网（WLAN）应用。 这样的应用包括但不限于降频转换，上变频，增强信号接收，统一下变频和滤波，以及它们的组合和应用。
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公开(公告)号：US06704549B1
公开(公告)日：2004-03-09
申请号：US09476330
申请日：2000-01-03
申请人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
发明人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
IPC分类号： H04B166
CPC分类号： H03D7/00
摘要： The present invention is directed toward the transmission subsystem of a multi-mode, multi-band communication system that can transmit and/or receive one or more information signals on one or more transmission frequencies using one or more modulation schemes. According to embodiments of the invention, the up-conversion section is implemented using a universal frequency translator (UFT).
摘要翻译： 本发明涉及可以使用一个或多个调制方案在一个或多个传输频率上发送和/或接收一个或多个信息信号的多模式多频带通信系统的传输子系统。 根据本发明的实施例，上变频部分使用通用频率转换器（UFT）来实现。
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3.发明授权Analog zero if FM decoder and embodiments thereof, such as the family radio service 有权如果FM解码器及其实施例如家庭无线电服务，则模拟为零公开(公告)号：US07209725B1
公开(公告)日：2007-04-24
申请号：US09476092
申请日：2000-01-03
申请人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
发明人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
摘要： A method and system for directly down-converting FM signals to demodulated baseband information signals that can be used to directly down-convert analog FM signals and digital FM signals to demodulated baseband information signals. In an embodiment, the method includes aliasing an FM signal at an aliasing rate substantially equal to the frequency of the FM signal or substantially equal to a sub-harmonic thereof; adjusting the aliasing rate in accordance with frequency changes on the FM signal to maintain the aliasing rate substantially equal to the frequency of the FM signal, and outputting a demodulated baseband information signal. The method optionally includes compensating for phase delays and/or other characteristics of the loop in order to maintain bandwidth and stability for the loop.
摘要翻译： 一种用于将FM信号直接降频转换为可用于将模拟FM信号和数字FM信号直接降频到解调的基带信息信号的解调基带信息信号的方法和系统。 在一个实施例中，该方法包括以基本上等于FM信号的频率或基本上等于其次谐波的混叠速率对FM信号进行混叠; 根据FM信号的频率变化调整混叠速率，以使混叠速率维持在与FM信号频率基本相等的程度，并输出解调的基带信息信号。 该方法可选地包括补偿环路的相位延迟和/或其他特性，以便保持环路的带宽和稳定性。
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4.发明授权Image-reject down-converter and embodiments thereof, such as the family radio service 有权图像拒绝下变换器及其实施例，例如家庭无线电服务公开(公告)号：US06704558B1
公开(公告)日：2004-03-09
申请号：US09476091
申请日：2000-01-03
申请人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
发明人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
IPC分类号： H04B126
CPC分类号： H03D7/00
摘要： A method and system is described for several embodiments of a communication system. In a first embodiment, a method and system is described wherein a signal is received and down-converted and wherein power consumption can be characterized as “ultra-low.” In a second embodiment, a method and system is described wherein undesirable images are rejected in a down-conversion system. In a third embodiment, a method and system is described wherein a signal is transmitted in a highly efficient manner. In one implementation the present invention is used in a family radio system.
摘要翻译： 描述了通信系统的几个实施例的方法和系统。 在第一实施例中，描述了一种方法和系统，其中信号被接收和下变频，并且其中功耗可被表征为“超低”。 在第二实施例中，描述了一种方法和系统，其中不期望的图像在下变换系统中被拒绝。 在第三实施例中，描述了以高效率的方式传输信号的方法和系统。 在一个实现中，本发明用于家庭无线电系统中。
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公开(公告)号：US07599421B2
公开(公告)日：2009-10-06
申请号：US11404957
申请日：2006-04-17
申请人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins , Gregory S. Silver
发明人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins , Gregory S. Silver
IPC分类号： H04B1/00
摘要： Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion and de-spreading, and Early/Late receivers utilizing unified down-conversion and de-spreading, and combinations and applications of same. Additionally, applications are included for limiting spectral growth during unified up-conversion and spreading of a baseband signal.
摘要翻译： 本文描述了其频率转换和扩频应用。 这样的应用包括但不限于统一的下转换和解扩，统一上转换和扩展，使用统一的下转换和解扩的RAKE接收机，以及利用统一的下转换和de 扩展，以及它们的组合和应用。 另外，包括用于限制基带信号的统一上变频和扩频期间的频谱增长的应用。
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公开(公告)号：US07110435B1
公开(公告)日：2006-09-19
申请号：US09525185
申请日：2000-03-14
申请人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins , Gregory S. Silver
发明人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins , Gregory S. Silver
摘要： Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion and de-spreading, and Early/Late receivers utilizing unified down-conversion and de-spreading, and combinations and applications of same. Additionally, applications are included for limiting spectral growth during unified up-conversion and spreading of a baseband signal.
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7.发明授权Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service 有权具有多模式和多频带功能的混叠通信系统及其实施例，例如家庭无线电业务公开(公告)号：US07006805B1
公开(公告)日：2006-02-28
申请号：US09476093
申请日：2000-01-03
申请人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
发明人： David F. Sorrells , Michael J. Bultman , Charles D. Clements , Robert W. Cook , Joseph M. Hamilla , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Silver
IPC分类号： H04B1/18
CPC分类号： H04B1/0057 , H04B1/0075 , H04B1/0082 , H04B1/406
摘要： A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a single band/channel mode, and a multiple band/channel mode. The receiver may form a portion of a transceiver. The transceiver may also include a transmitter. In an embodiment, the transceiver is a family radio service (FRS) unit, although the invention is not limited to this embodiment.
摘要翻译： 本文描述了具有多模式和多频带功能和能力的接收机。 接收机能够选择性地在多个频带和频道上操作。 接收机以多种模式操作，包括但不限于单个频带/频道模式和多频带/频道模式。 接收机可以形成收发器的一部分。 收发机还可以包括发射机。 在一个实施例中，收发器是家庭无线电服务（FRS）单元，尽管本发明不限于该实施例。
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