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11. 发明授权

US5790527A Trunked radio frequency communication system for accommodating both frequency and time division based RF communications 失效
标题翻译：用于容纳基于频率和时分的RF通信的集群射频通信系统
公开(公告)号：US5790527A
公开(公告)日：1998-08-04
申请号：US359691
申请日：1994-12-20
申请人： William O. Janky , Philip C. Gulliford , Clayton F. Helvey , Satish Kappagantula , Ross W. Lampe , Anthony B. Waldroup
发明人： William O. Janky , Philip C. Gulliford , Clayton F. Helvey , Satish Kappagantula , Ross W. Lampe , Anthony B. Waldroup
IPC分类号： H04B7/26 , H04L12/56 , H04W4/10 , H04W56/00 , H04W74/00 , H04W74/02 , H04W74/04 , H04W84/08 , H04J4/00
CPC分类号： H04W74/0891 , H04B7/2615 , H04W4/10 , H04W56/00 , H04W76/005 , H04W84/08
摘要： In a trunked radio communications system, apparatus and methods are provided for transparently updating existing frequency division multiple access (FDMA) communications facilities to accommodate time division multiple access (TDMA) communications. TDMA channels are added to existing FDMA sites on an individual basis to increase spectral efficiency and capacity while still being compatible with existing FDMA equipment and protocols. For example, the existing FDMA control channel and protocols are used by dual mode sites and dual mode radios. A dual mode radio transceiver selectively participates in trunked radio communications in either an FDMA mode or in a TDMA mode. Each dual mode radio includes a memory for storing a mode identifier identifying each channel as an FDMA or a TDMA working channel. When a channel assignment is made, the dual mode radio determines from that channel mode identifier stored in memory whether to operate in the FDMA or TDMA mode for that particular communication. Moreover, dual mode radios expedite synchronization to a TDMA working channel (time slot) using a timing relationship established between the FDMA control channel and the TDMA working channels. In the context of multiple site, trunked radio communications, the present invention provides for interoperability between sites and radios which have TDMA communications capabilities and sites and radios which have only FDMA capabilities.
摘要翻译：在集群无线电通信系统中，提供了用于透明地更新现有频分多址（FDMA）通信设施以适应时分多址（TDMA）通信的装置和方法。 TDMA信道被单独添加到现有的FDMA站点以提高频谱效率和容量，同时仍然与现有的FDMA设备和协议兼容。例如，现有的FDMA控制信道和协议由双模站点和双模式无线电使用。双模无线电收发器以FDMA模式或TDMA模式选择性地参与中继无线电通信。每个双模式无线电装置包括用于存储标识每个信道作为FDMA或TDMA工作信道的模式标识符的存储器。当进行信道分配时，双模式无线电从该存储在存储器中的信道模式标识符确定是否以该特定通信的FDMA或TDMA模式操作。此外，双模式无线电使用在FDMA控制信道和TDMA工作信道之间建立的定时关系来加速与TDMA工作信道（时隙）的同步。在多站点，中继无线电通信的背景下，本发明提供具有TDMA通信能力的站点和无线电之间的互操作性，以及仅具有FDMA能力的站点和无线电。

12. 发明授权

US5740522A Method and apparatus for reducing receive band transmitter-chain noise for a portable duplex transceiver 失效
标题翻译：用于减少便携式双工收发器的接收频带发射机链噪声的方法和装置
公开(公告)号：US5740522A
公开(公告)日：1998-04-14
申请号：US503027
申请日：1995-07-17
申请人： Rodney A. Dolman , Ross W. Lampe , Xue-Song Zhou
发明人： Rodney A. Dolman , Ross W. Lampe , Xue-Song Zhou
IPC分类号： H03B1/00 , H04B1/04
CPC分类号： H04B1/0475 , H03B2201/0208
摘要： Reduction of transmitter exciter chain generated noise from the receive bank of a portable/hand-held duplex transceiver is achieved using a high output power, low-noise voltage-controlled-oscillator (VCO) in the transmitter exciter chain. Using this high-power, low-noise oscillator as the RF source in the transmitter exciter chain precludes the need for the conventional buffer/driver amlplifier stage and an associated inter-stage noise filter. Elimination of buffer/driver stage components and bulky inter-stage noise filter components allows complete integration of transmitter exciter chain components resulting in reduced size and cost.
摘要翻译：使用发射机激励器链中的高输出功率低噪声压控振荡器（VCO）来实现从便携式/手持双工收发器的接收组中减少发射机激励器链产生的噪声。使用这种高功率，低噪声振荡器作为发射机激励器链中的RF源，排除了传统的缓冲器/驱动器放大器级和相关的级间噪声滤波器的需要。消除缓冲器/驱动器级元件和庞大的级间噪声滤波器元件允许发射机激励器链组件的完全集成，从而减小尺寸和成本。

13. 发明授权

US5649350A Method of mass producing printed circuit antennas 失效
标题翻译：大量生产印刷电路天线的方法
公开(公告)号：US5649350A
公开(公告)日：1997-07-22
申请号：US544631
申请日：1995-10-18
申请人： Ross W. Lampe , Claes Henri von Sheele
发明人： Ross W. Lampe , Claes Henri von Sheele
IPC分类号： H01Q1/38 , H01Q9/30 , H01R11/00
CPC分类号： H01Q9/30 , H01Q1/38 , Y10T29/49016
摘要： A method of mass producing printed circuit antennas is disclosed including the steps of providing a substrate of dielectric material having a first side and a second side, removing portions of the substrate to produce an array of interconnected segments of desired size, fabricating a main radiating element on the first side of each substrate segment, overmolding each substrate segment with a protective dielectric material, and separating each substrate segment from the dielectric substrate to form a plurality of individual printed circuit antennas. Preferably, each of the foregoing steps are able to be performed on each substrate segment substantially simultaneously. The method may also include the steps of freeing one end of the substrate segments, attaching an electrical connector to each substrate segment, and overmolding the electrical connector for each of the substrate segments prior to the separating step. Fabrication of additional radiating elements to the first or second side, or alternatively a reactive or parasitic element to the second side, may be undertaken so that the printed circuit antennas are capable of multi-band operation.
摘要翻译：公开了一种批量生产印刷电路天线的方法，其包括以下步骤：提供具有第一侧和第二侧的电介质材料的衬底，去除衬底的部分以产生所需尺寸的互连片段阵列，制造主辐射元件在每个衬底段的第一侧上，用保护电介质材料包覆模制每个衬底段，并且将每个衬底段与电介质衬底分离以形成多个单独的印刷电路天线。优选地，上述每个步骤能够基本上同时地在每个基片段上执行。该方法还可以包括以下步骤：释放衬底段的一端，将电连接器连接到每个衬底段，以及在分离步骤之前对每个衬底段的电连接器进行二次模制。可以进行向第一侧或第二侧的附加辐射元件的制造，或者替代地，到第二侧的反应性或寄生元件，使得印刷电路天线能够进行多频带操作。

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