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1. 发明授权

US07526263B2 Input arrangement for a low-noise amplifier pair 有权
标题翻译：低噪声放大器对的输入布置
公开(公告)号：US07526263B2
公开(公告)日：2009-04-28
申请号：US11469725
申请日：2006-09-01
申请人： Erkki Niiranen , Harri Närhi , Jukka Puoskari , Pertti Koskela
发明人： Erkki Niiranen , Harri Närhi , Jukka Puoskari , Pertti Koskela
IPC分类号： G06F3/033
CPC分类号： H01P1/2053 , H01P5/16
摘要： An arrangement for processing the antenna signal of a radio receiver and for leading it to low-noise amplifiers LNA of parallel amplifier branches. On the transmission path of the receiver from the antenna to the amplifiers LNA, functionally different elements are combined into physically united elements, such as the conductors (432, 433) of the low-passing part of the antenna filter and the division conductors of the Wilkinson divider (430), and the conductor (441) of the phase-shifter and the inductive part (L1) of the LNA matching circuit. Each physically united element is a conductor, which is insulated from the ground plane by air or a low-loss dielectric material. The arrangement reduces the number of lossy parts between the antenna and the amplifiers, and placing these parts on an ordinary circuit board is also avoided. For these reasons, inferior noise values compared to the prior art can be allowed for each LNA. In addition, the matching of the input impedance of the LNA becomes more accurate when no discrete coil is needed in it.
摘要翻译：用于处理无线电接收机的天线信号并将其引导到并行放大器分支的低噪声放大器LNA的装置。在从天线到放大器LNA的接收器的传输路径上，功能上不同的元件被组合成物理上结合的元件，例如天线滤波器的低通部分的导体（432,433）和 Wilkinson分压器（430）和移相器的导体（441）和LNA匹配电路的电感部分（L1）。每个物理上联合的元件是导体，其通过空气或低损耗介电材料与地平面绝缘。该布置减少了天线和放大器之间的有损部分的数量，并且也避免了将这些部件放置在普通电路板上。由于这些原因，对于每个LNA，可以允许与现有技术相比较差的噪声值。此外，当不需要分立线圈时，LNA的输入阻抗的匹配变得更加准确。

2. 发明授权

US08150353B2 Masthead amplifier unit 有权
标题翻译：标头放大器单元
公开(公告)号：US08150353B2
公开(公告)日：2012-04-03
申请号：US12434512
申请日：2009-05-01
申请人： Harri Närhi
发明人： Harri Närhi
IPC分类号： H04B7/02 , H04B1/10 , H04B1/50
CPC分类号： H04B1/0483
摘要： An amplifier unit to be placed in an antenna mast and belonging to a two-way radio system. The amplifier unit comprises two front stages for implementing diversity, each front stage comprising a receiving branch with an amplifier and a transmitting branch including a transmit bandpass filter. In both front stages the output of the receiving branch and the input of the transmitting branch are coupled together and further to a base station (BT1, BT2) by an intermediate cable. There is at least one pair of antenna radiators. One radiator of the pair is coupled to the input of the receiving branch of the first front stage and the output of the transmitting branch of the second front stage, and the other radiator to the input of the receiving branch of the second front stage and the output of the transmitting branch of the first front stage. Then, the feedback path of the signal amplified in the receiving branch circulates for the part of both front stages via both radiators and the airspace. Because of isolation between the radiators, the attenuation of the feedback path increases, in which case the transmit bandpass filters can be made smaller and cheaper.
摘要翻译：放置在天线桅杆中并属于双向无线电系统的放大器单元。放大器单元包括用于实现分集的两个前级，每个前级包括具有放大器的接收支路和包括发射带通滤波器的发射支路。在两个前级中，接收分支的输出和发送分支的输入通过中间电缆耦合在一起并进一步耦合到基站（BT1，BT2）。至少有一对天线辐射器。该对的一个散热器耦合到第一前级的接收分支的输入端和第二前级的发射支路的输出，另一个散热器耦合到第二前级的接收支路的输入端输出第一前级的发送支路。然后，在接收分支中放大的信号的反馈路径通过两个散热器和空域对两个前级的一部分进行循环。由于辐射器之间的隔离，反馈路径的衰减增加，在这种情况下，可以使发射带通滤波器更小更便宜。

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