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1. 发明授权

US06868279B2 Power characteristic of a radio transmitter 有权
标题翻译：无线电发射机的功率特性
公开(公告)号：US06868279B2
公开(公告)日：2005-03-15
申请号：US10169141
申请日：2000-12-29
申请人： Karl Gösta Sahlman , Hans Eriksson
发明人： Karl Gösta Sahlman , Hans Eriksson
IPC分类号： H03G3/00 , H03G3/30 , H04B7/00
CPC分类号： H03G3/001 , H03G3/3047 , H03G2201/708 , H04W52/50 , H04W52/52
摘要： The present invention relates to radio transmission of bursts in for example a TDMA cellular radio system. The burst starts with a ramping up period, ends with a corresponding ramping down ramping down period and with the pay-load information therebetween. The ramp form is created in a ramp generator (13) which gives a multiplication value to multiply the digital information to be transmitted in multipliers (15, 16). The multiplied values are converted into analogue form and amplified before being transferred to the antenna (21). Output power and temperature of the transmitting equipment are measured (22, 23) and used to update the output power levels during the next burst.
摘要翻译：本发明涉及例如TDMA蜂窝无线电系统中的脉冲串的无线电传输。突发从加速期开始，以相应的斜坡下降周期结束，并且其间的付费信息。在斜坡发生器（13）中创建斜坡形式，斜坡发生器（13）给出乘法值乘以要在乘法器（15,16）中发送的数字信息。相乘的值被转换成模拟形式，并在被传送到天线（21）之前被放大。测量发射设备的输出功率和温度（22,23），并用于在下一个脉冲串期间更新输出功率电平。

2. 发明授权

US07944995B2 Variable bandwidth receiver 有权
标题翻译：可变带宽接收器
公开(公告)号：US07944995B2
公开(公告)日：2011-05-17
申请号：US11545782
申请日：2006-10-11
申请人： Ulf Skarby , Karl Gösta Sahlman
发明人： Ulf Skarby , Karl Gösta Sahlman
IPC分类号： H03K9/00
CPC分类号： H04B1/1027 , H04L27/265 , H04L27/2653
摘要： A variable bandwidth receiver uses allocated bandwidth more efficiently and ensures that blocking signals do not overload receiver components. The receiver includes multiple branches for receiving a first bandwidth signal. Each receiver branch has a filter for passing signals in a frequency band corresponding to a second bandwidth less that the first bandwidth and an analog-to-digital converter for converting the baseband signal into a digital signal. A controller digitally combines the digital signals from two or more of the receiver branches to produce a received signal having a bandwidth substantially wider than the first bandwidth. Because combining is done after analog-to-digital conversion in the digital domain, the controller can combine the digital signals from two or more of the receiver branches having adjacent corresponding frequency bands without the normal guard band separating them.
摘要翻译：可变带宽接收器更有效地使用分配的带宽，并确保阻塞信号不会使接收器组件过载。接收机包括用于接收第一带宽信号的多个分支。每个接收机分支具有用于在对应于小于第一带宽的第二带宽的频带中传递信号的滤波器和用于将基带信号转换为数字信号的模数转换器。控制器将来自两个或多个接收机分支的数字信号进行数字组合，以产生具有比第一带宽大得多的带宽的接收信号。因为在数字域中的模数转换之后进行组合，所以控制器可以组合来自具有相邻相应频带的两个或多个接收器分支的数字信号，而不分离它们的正常保护带。

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