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公开(公告)号：US20100151801A1
公开(公告)日：2010-06-17
申请号：US12335691
申请日：2008-12-16
摘要： A Multiple Protocol Signal Detector, MPSD (320, 500) has a mixer (406) that receives signal energy from a multi-band antenna system (324) via a low noise amplifier (402) and from a variable frequency synthesizer (408) via a first variable band pass filter (410). The output of the mixer (406) passes through a second variable band pass filter (416) to an envelope detector (418) a power detector (419) and a low resolution A/D (420) that inputs digitized samples to a binary modulation detector, BMD (422). A controller (424) configures the aforementioned devices of the MPSD (320) to detect communications using different protocols based on a scan Look Up Table (426).
摘要翻译： 多协议信号检测器，MPSD（320,500）具有混频器（406），其经由低噪声放大器（402）和来自可变频率合成器（408）的多频带天线系统（324）经由 第一可变带通滤波器（410）。 混频器（406）的输出通过第二可变带通滤波器（416）到包络检测器（418），功率检测器（419）和低分辨率A / D（420），其将数字化采样输入到二进制调制 检测器，BMD（422）。 控制器（424）根据扫描查找表（426）配置MPSD（320）的上述设备以检测使用不同协议的通信。
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2.发明授权Satellite telecommunication system with apparatus for protecting radio astronomy and method of using same 失效具有用于保护射电天文学的卫星电信系统及其使用方法
公开(公告)号：US5548800A
公开(公告)日：1996-08-20
申请号：US254012
申请日：1994-06-03
CPC分类号： H04B7/18513
摘要： A constellation of satellites distributed around the earth serves as a communication network that supports global communication of subscriber units. Subscriber units may potentially transmit from any location on earth. Some locations such as radio astronomy sites may be interfered with by nearby transmissions from subscriber units. Subscriber units located within a potentially interfering proximity to radio astronomy sites are prohibited from transmitting potentially interfering signals by reception of a non-interfering beacon at radio astronomy sites. The beacon repeatedly transmits a synchronous control signal with a subscriber unit's servicing satellite's control signal. The beacon's control signal is compatible with a subscriber unit's communication receiver. Control signal information contained in a beacon control signal inhibits the subscriber unit from transmitting.
摘要翻译： 分布在地球上的卫星星座作为支持用户单元全球通信的通信网络。 用户单元可能可能从地球上的任何位置传输。 诸如射电天文遗址的某些位置可能受到来自用户单元的附近传输的干扰。 位于与射电天文台站潜在干扰接近的订户单元被禁止通过在射电天文站点接收非干扰信标来发送潜在的干扰信号。 信标反复发送具有用户单元的维修卫星的控制信号的同步控制信号。 信标的控制信号与用户单元的通信接收机兼容。 包含在信标控制信号中的控制信号信号禁止用户单元的发送。
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公开(公告)号：US4608699A
公开(公告)日：1986-08-26
申请号：US453846
申请日：1982-12-27
摘要： An improved simulcast transmission in which a signal transmitted by a master station provides a reference frequency signal, as well as a voice and data path, is described. The system can be configured such that a master station can transmit AFSK data and voice or FSK data and voice. In either case, the remote transmitter will retransmit FSK and voice.
摘要翻译： 描述了由主站发送的信号提供参考频率信号以及语音和数据路径的改进的联播传输。 可以配置系统，使得主站可以发送AFSK数据和语音或FSK数据和语音。 在任一情况下，远程发射机将重发FSK和语音。
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公开(公告)号：US4491806A
公开(公告)日：1985-01-01
申请号：US433066
申请日：1982-10-06
申请人： Gary R. Reynolds , Thomas R. Gaynor , Raul Olivera , Ross E. Ruthenberg , Jay G. Smith , Christopher N. Kurby , Terry K. Mansfield
发明人： Gary R. Reynolds , Thomas R. Gaynor , Raul Olivera , Ross E. Ruthenberg , Jay G. Smith , Christopher N. Kurby , Terry K. Mansfield
CPC分类号： H01P7/04
摘要： The invention is a microphonics suppression means for a high frequency resonant cavity. The resonant cavity is used in a RF oscillator to generate UHF/VHF frequencies. The resonant cavity comprises an outer wall portion, a center conductor portion, a tuning slug and a plurality of coupling probes. The coupling probes, tuning slug and center conductor are held in a fixed relationship by a microphonics suppression means made of a low dielectric material which fits over and around the center conductor and encapsulates the coupling probes and collars the tuning slug. The microphonics suppression means reduces the effect of microphonics on the output signal of the RF oscillator, thus allowing a clean output signal suitable for high power applications.
摘要翻译： 本发明是用于高频谐振腔的麦克风抑制装置。 谐振腔用于RF振荡器以产生UHF / VHF频率。 谐振腔包括外壁部分，中心导体部分，调谐段和多个耦合探针。 耦合探头，调谐段和中心导体通过由低介电材料制成的麦克风抑制装置保持固定关系，该低介电材料装配在中心导体上并围绕中心导体并封装耦合探头并将调谐段插入。 麦克风抑制装置降低了麦克风对RF振荡器的输出信号的影响，从而允许适用于大功率应用的干净的输出信号。
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公开(公告)号：US06476776B1
公开(公告)日：2002-11-05
申请号：US09712767
申请日：2000-11-14
申请人： Christopher N. Kurby
发明人： Christopher N. Kurby
IPC分类号： H01Q124
CPC分类号： H01Q21/29 , H01Q1/244 , H01Q3/26 , H01Q21/245
摘要： A satellite adapted antenna system has at least spaced apart first and second elements (104, 106), the first and second elements (104, 106) having substantially a common first polarization. A third element (108) has a second polarization that is opposite the first polarization of the first element (104). An antenna mode selector system selects between operatively connecting the first and second elements (104, 106) to form a specular antenna and operatively connecting the first and third elements (104, 108) to form a diversity antenna. Each of the first, second and third elements (104, 106, 108) are quadrifilar helix antennas. The first and second elements (104, 106) are quadrifilar helix antenna having right hand circuit polarization, and the third element (108) is a quadrifilar helix antenna having a left hand circuit polarization. The method for adapting a satellite antenna system has the steps of providing a diversity antenna having a polarization diversity mode defined by the first and third elements (104, 108); providing a specular antenna having a pattern gain mode defined by the first and second elements (104, 106); using the diversity mode for communicating with a satellite; and switching to the specular mode for communicating with the satellite in response to at least one predetermined characteristic.
摘要翻译： 卫星适配天线系统具有至少间隔开的第一和第二元件（104,106），所述第一和第二元件（104,106）具有基本上共同的第一偏振。 第三元件（108）具有与第一元件（104）的第一极化相反的第二极化。 天线模式选择器系统在可操作地连接第一和第二元件（104,106）之间选择以形成镜面天线并且可操作地连接第一和第三元件（104,108）以形成分集天线。 第一，第二和第三元件（104,106,108）中的每一个都是四极螺旋天线。 第一和第二元件（104,106）是具有右手电路极化的四极螺旋天线，并且第三元件（108）是具有左手电路极化的四极螺旋天线。 适应卫星天线系统的方法具有以下步骤：提供具有由第一和第三元件（104,108）定义的极化分集模式的分集天线; 提供具有由第一和第二元件（104,106）定义的图案增益模式的镜面天线; 使用分集模式与卫星通信; 以及响应于至少一个预定特性切换到用于与卫星进行通信的镜面模式。
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6.发明授权Satellite-based messaging system transmitting during guard band of satellite-based telephone system and method of operation thereof 失效基于卫星电话系统保卫频段的基于卫星的消息收发系统及其操作方法
公开(公告)号：US5603079A
公开(公告)日：1997-02-11
申请号：US317090
申请日：1994-10-03
CPC分类号： H04B7/18567
摘要： A satellite-based, world-wide cellular messaging system transmits paging messages to pagers. The messages are transmitted during a guard-band time-slot of a compatible world-wide cellular telephone system. In order to achieve better penetration, the satellites boost their transmit power for paging messages. One or more paging carrier frequencies may be used to accommodate differences in paging demand among different terrestrial cells.
摘要翻译： 基于卫星的全球蜂窝消息系统向寻呼机发送寻呼消息。 消息在兼容的全球蜂窝电话系统的保卫频段时隙期间被发送。 为了实现更好的穿透，卫星提高了寻呼消息的发射功率。 可以使用一个或多个寻呼载波频率来适应不同陆地小区之间寻呼需求的差异。
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7.发明授权Geographic-area selective low-earth satellite-based paging broadcast system and method 失效地理区域选择性低地球卫星寻呼广播系统及方法
公开(公告)号：US5396643A
公开(公告)日：1995-03-07
申请号：US933550
申请日：1992-08-24
申请人： Michael W. Frenzer , Robert J. Locascio , Joan E. Zocher , Dwight D. Walthers , Martin V. Seitz , Christopher N. Kurby
发明人： Michael W. Frenzer , Robert J. Locascio , Joan E. Zocher , Dwight D. Walthers , Martin V. Seitz , Christopher N. Kurby
CPC分类号： H04B7/18567
摘要： The present invention includes a low-earth satellite-based paging broadcast system (100) and method (200, 300) that maximizes spectral efficiency and minimizes power expenditure for the broadcast of paging messages by broadcasting the messages to terminator- or originator-selectable portions of the total system coverage area. The terminator selects a long-term preferred geographic area (LTPGA), and optionally, a short-term preferred geographic area (STPGA). The originator provides the terminator ID, the message, and optionally provides a customized preferred geographic area (CPGA). Terminators and originators can easily modify the selectable geographic areas (SGA(s)): LTPGA(s), STPGA(s), and CPGA(s). The gateway converts the SGA(s) to addressable coverage areas (ACA(s)), and transmits a signal including the paging information, and ACA(s) to at least a first communication satellite (COM SAT). The COM SAT(s) provide for crosslinking the signal to other COM SAT(s) and for broadcasting the paging information to the ACA(s).
摘要翻译： 本发明包括一种低地球卫星寻呼广播系统（100）和方法（200,300），其通过将消息广播到终端器或发起者可选择部分来最大化频谱效率并最小化用于广播寻呼消息的功率消耗 的系统覆盖面积。 终端选择长期优选地理区域（LTPGA），以及可选的短期优选地理区域（STPGA）。 发起者提供终结者ID，消息，并且可选地提供定制的优选地理区域（CPGA）。 终结者和发起者可以轻松地修改可选地理区域（SGA）：LTPGA（s），STPGA和CPGA（s）。 网关将SGA转换为可寻址覆盖区域（ACA），并将包括寻呼信息和ACA的信号发送到至少第一通信卫星（COM SAT）。 COM SAT提供将信号交叉到其他COM SAT并将寻呼信息广播到ACA。
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8.发明授权
公开(公告)号：US5613194A
公开(公告)日：1997-03-18
申请号：US317083
申请日：1994-10-03
IPC分类号： H04B7/185
CPC分类号： H04B7/18567
摘要： A satellite-based, world-wide cellular messaging system transmits paging messages to pagers. The messages are transmitted at unique times, on unique frequencies, and into uniquely identified cells according to a plan which is periodically revised and transmitted in advance to the pagers. Battery resources in the satellites and pagers are thereby conserved, and interference between transmissions to adjacent cells is minimized.
摘要翻译： 基于卫星的全球蜂窝消息系统向寻呼机发送寻呼消息。 根据周期性修改并预先传送到寻呼机的计划，消息在唯一的时间，在唯一的频率上被发送到唯一标识的小区。 因此卫星和寻呼机中的电池资源被保存，并且使相邻小区的传输之间的干扰最小化。
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公开(公告)号：US5606332A
公开(公告)日：1997-02-25
申请号：US517520
申请日：1995-08-21
IPC分类号： H01Q21/24 , H01Q1/24 , H01Q1/36 , H01Q1/42 , H01Q11/08 , H01Q21/29 , H01Q25/04 , H04B1/38 , H01Q9/04
摘要： A dual function antenna structure transceives in first and second modes. A first feed (120) feeds a primary antenna element (110) for operation in the first mode. A second feed (240) connects to the first feed (120). An upper choke (150) and a metal layer (160) are tuned to a wavelength of the radio frequency energy to be transceived in the second mode. The primary antenna element (110) and the metal layer (160) thus realize a secondary antenna element for operation in the second mode. In a portable radio, dual function operation is thus possible by a compact structure by the first and second feeds (120, 140).
摘要翻译： 双功能天线结构在第一和第二模式中收敛。 第一馈送（120）馈送用于在第一模式中操作的主天线元件（110）。 第二进料（240）连接到第一进料（120）。 上部扼流圈（150）和金属层（160）被调谐到在第二模式中被收发的射频能量的波长。 因此，主天线元件（110）和金属层（160）实现用于在第二模式中操作的辅助天线元件。 在便携式无线电装置中，通过第一和第二馈送（120,140）的紧凑结构，双功能操作是可能的。
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公开(公告)号：US5521941A
公开(公告)日：1996-05-28
申请号：US620601
申请日：1990-11-29
IPC分类号： H04L25/06
CPC分类号： H04L25/062 , H04L25/066 , Y10T307/664
摘要： Symbol recovery for multi-level digital signals has traditionally been difficult because of the nature of the eye pattern output by the discriminator (103), and especially its response to a noisy or impeded signal environment. This method and apparatus for recovery thresholds adjusts (411 and 417) to the current state of the discriminator (103) output of the received signal, based on an attenuated (301) version of that signal. Using a fast adjust mode and slow adjust mode, the threshold generating circuitry (331 and 361) adapts to the signal based on data from the received signal fed into lock detectors (329 and 359) which determine the mode to use.
摘要翻译： 传统上由于鉴别器（103）输出的眼图的性质，特别是其对噪声或阻碍的信号环境的响应，多级数字信号的符号恢复是困难的。 该恢复阈值的方法和装置基于该信号的衰减（301）版本，调整（411和417）到接收信号的鉴别器（103）输出的当前状态。 使用快速调整模式和慢速调整模式，阈值产生电路（331和361）根据来自确定使用模式的锁定检测器（329和359）的接收信号的数据适应信号。
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