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1. 发明授权

US5887247A Radio transmission system and a radio apparatus for use therein 失效
标题翻译：无线电传输系统和用于其中的无线电设备
公开(公告)号：US5887247A
公开(公告)日：1999-03-23
申请号：US977260
申请日：1997-11-24
申请人： Petrus G. M. Baltus , Lukas Leyten , Hendrik A. Visser , Antoon M. H. Tombeur , Antonius G. Wagemans , Jan Van Sinderen
发明人： Petrus G. M. Baltus , Lukas Leyten , Hendrik A. Visser , Antoon M. H. Tombeur , Antonius G. Wagemans , Jan Van Sinderen
IPC分类号： H01Q3/36 , H01Q3/24 , H01Q3/26 , H04B1/30 , H04B7/04 , H04B7/06 , H04B7/08 , H04B7/26 , H04B17/02 , H04B1/06
CPC分类号： H01Q3/24 , H01Q3/26 , H04B1/30 , H04B7/0695 , H04B7/0811 , H04B7/088 , H04B7/086
摘要： A radio transmission system is disclosed for operating in a multipath transmission environment having improved reception, and in the case of bi-directional systems, also improved transmission. This is achieved by using at least two reception beams, corresponding to one fixed reception beam and one scanning reception beam, and by continuously evaluating the quality of these beams as to their signal-to-noise-and-interference ratios or bit-error-rates (BERs). The best beam is dynamically chosen to be the fixed beam. Alternatively, the fixed beam is updated with the best beam acquired by the scanning beam as compared to the current fixed beam. In a bi-directional system, the receiving radio apparatus applies the direction of the best reception beam for transmission to the opposite radio apparatus.
摘要翻译：公开了用于在具有改进的接收的多径传输环境中操作的无线电传输系统，并且在双向系统的情况下，还改进了传输。这通过使用对应于一个固定接收波束和一个扫描接收波束的至少两个接收波束来实现，并且通过连续评估这些波束的信号与噪声干扰比或比特误差比特的质量，率（BER）。动态选择最佳光束为固定光束。或者，与当前固定光束相比，用扫描光束获取的最佳光束更新固定光束。在双向系统中，接收无线电设备将用于传输的最佳接收波束的方向应用于相对的无线电设备。

2. 发明授权

US5751249A Radio transmission system and a radio apparatus for use in such a system 失效
标题翻译：无线电传输系统和用于这种系统的无线电装置
公开(公告)号：US5751249A
公开(公告)日：1998-05-12
申请号：US527738
申请日：1995-09-13
申请人： Petrus G. M. Baltus , Lukas Leyten , Jan Van Sinderen , Antoon M. H. Tombeur , Hendrik A. Visser , Antonius G. Wagemans
发明人： Petrus G. M. Baltus , Lukas Leyten , Jan Van Sinderen , Antoon M. H. Tombeur , Hendrik A. Visser , Antonius G. Wagemans
IPC分类号： H01Q3/36 , H01Q3/24 , H01Q3/26 , H04B1/30 , H04B7/08 , H04B7/26
CPC分类号： H01Q3/24 , H01Q3/26 , H01Q3/2605 , H04B1/30 , H04B7/086
摘要： A radio transmission system comprises a phased-array radio apparatus for optimizing reception in a multipath transmission environment. In the phased-array radio apparatus, phase shifting is performed after down-conversion of received RF signals. Phase control and beam-forming are simple. By applying a zero-IF or low-IF receiver structure, the complete structure can easily be fully integrated.
摘要翻译：无线电传输系统包括用于在多径传输环境中优化接收的相控阵无线电装置。在相控阵无线电设备中，在接收的RF信号的下变频之后执行相移。相位控制和波束形成简单。通过应用零中频或低中频接收机结构，完整的结构可以很容易地完全集成。

3. 发明授权

US06192229B1 Diode mixer circuit 失效
标题翻译：二极管混频电路
公开(公告)号：US06192229B1
公开(公告)日：2001-02-20
申请号：US09207526
申请日：1998-12-08
申请人： Eduard F. Stikvoort , Petrus G. M. Baltus , Antoon M. H. Tombeur
发明人： Eduard F. Stikvoort , Petrus G. M. Baltus , Antoon M. H. Tombeur
IPC分类号： H04B100
CPC分类号： H03D7/1408
摘要： In a diode mixer circuit MIX, a driving circuit DRIV produces a first, second, third and fourth drive signal DS1, DS2, DS3, DS4. Each drive signal is a combination of a first and a second input signal LO, RF with the following signs: DS1: +LO+RF DS2: +LO−RF DS3: −LO+RF DS4: −LO−RF A first, second, third and fourth diode D1, D2, D3, D4 transfer the first, second, third and fourth drive signal DS1, DS2, DS3, DS4 respectively, to an output O1. The first and fourth diodes D1, D4 have the same polarity relative to the output. The second and third diodes D2, D3 also have the same polarity relative to the output, but opposite to that of the first and fourth diodes D1, D4. A mixer circuit of this type is suitable for a relatively large variety of applications, notably because it may be realized in the form of an integrated circuit.
摘要翻译：在二极管混频器电路MIX中，驱动电路DRIV产生第一，第二，第三和第四驱动信号DS1，DS2，DS3，DS4。每个驱动信号是具有以下符号的第一和第二输入信号LO，RF的组合：DS1：+ LO + RFDS2：+ LO-RFDS3：-LO + RFDS4：-LO-RFA第一，第二，第三和第四二极管D1，D2，D3，D4分别将第一，第二，第三和第四驱动信号DS1，DS2，DS3，DS4传送到输出O1。第一和第四二极管D1，D4具有与输出相同的极性。第二和第三二极管D2，D3也具有与输出相同的极性，但与第一和第四二极管D1，D4的极性相反。这种类型的混频器电路适用于相当多种应用，特别是因为它可以以集成电路的形式实现。

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