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公开(公告)号：JP2013048467A
公开(公告)日：2013-03-07
申请号：JP2012231828
申请日：2012-10-19
发明人： WANG XINWEI , ZHANG XIANGDONG
CPC分类号： H03D7/1441 , H03D7/125 , H03D7/1458 , H03D7/1466 , H03D7/1491 , H03D7/165 , H03D2200/0025
摘要： PROBLEM TO BE SOLVED: To provide an amplified stepped gain mixer portion which improves the signal-to-noise ratio of a receiver by using multiple gain states to improve linearity.SOLUTION: The mixer portion comprises: an amplifier; a switch; and two transistors. The amplifier output is coupled to the sources of the two transistors. An oscillating signal is present on the transistor gates. The transistor drains are coupled to one another through the switch when the switch is closed. The mixer portion operates in two modes. In a 1/2 mode, the mixer portion output current flows only through the first transistor and not through the second transistor because the switch is open. In a 2/2 mode, the mixer portion output current flows through both transistors. The mixer portion is configured such that the switch is closed when a switching signal is asserted.
摘要翻译： 解决的问题：提供一种通过使用多个增益状态来提高线性度来提高接收机的信噪比的放大的阶梯式增益混频器部分。 混合器部分包括：放大器; 开关 和两个晶体管。 放大器输出耦合到两个晶体管的源极。 振荡信号存在于晶体管栅极上。 当开关关闭时，晶体管漏极通过开关彼此耦合。 混频器部分以两种模式工作。 在1/2模式下，由于开关断开，混频器部分的输出电流仅流过第一晶体管而不通过第二晶体管。 在2/2模式中，混频器部分输出电流流过两个晶体管。 混频器部分被配置成当断言切换信号时开关闭合。 版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2013048429A
公开(公告)日：2013-03-07
申请号：JP2012204566
申请日：2012-09-18
发明人： ZHANG XIANGDONG , WALTON JAY RODNEY
摘要： PROBLEM TO BE SOLVED: To provide a technology for coupling antennas to a transceiver.SOLUTION: A multi-antenna station has multiple remote front-ends 140n coupled to multiple antennas 150n. Each remote front-end includes a power amplifier (PA), a low noise amplifier (LNA), and first and second coupling units. On a transmit path, a first RF signal is received via a first port, routed by the first coupling unit to the power amplifier, amplified to obtain a desired output power level, and routed by the second coupling unit to a second port for transmission via the antennas. On a receive path, a second RF signal is received via the second port, routed by the second coupling unit to the LNA, amplified to obtain a higher signal level, and routed by the first coupling unit to the first port for transmission to a transceiver 130.
摘要翻译： 要解决的问题：提供将天线耦合到收发器的技术。 解决方案：多天线站具有耦合到多个天线150n的多个远端前端140n。 每个远程前端包括功率放大器（PA），低噪声放大器（LNA）以及第一和第二耦合单元。 在发送路径上，经由第一端口接收第一RF信号，由第一耦合单元路由到功率放大器，被放大以获得期望的输出功率电平，并由第二耦合单元路由到第二端口以便经由 天线。 在接收路径上，通过第二端口接收第二RF信号，由第二耦合单元路由到LNA，被放大以获得更高的信号电平，并由第一耦合单元路由到第一端口以传输到收发机 130.版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2010193462A
公开(公告)日：2010-09-02
申请号：JP2010046416
申请日：2010-03-03
发明人： ZHANG XIANGDONG , WALTON JAY RODNEY
摘要： PROBLEM TO BE SOLVED: To prevent system performance from being deteriorated due to a signal loss caused by a long connection between an antenna and a transceiver in a plurality of remote front-ends connected to a plurality of antennas at a multi-antenna station.
SOLUTION: Each remote front-end includes a power amplifier (PA), a low noise amplifier (LNA), and first and second coupling units. On the transmit path, a first RF signal is received via a first port, routed by the first coupling unit to the power amplifier, amplified to obtain the desired output power level, and routed by the second coupling unit to a second port for transmission via the antenna. On the receive path, a second RF signal is received via the second port, routed by the second coupling unit to the LNA, amplified to obtain a higher signal level, and routed by the first coupling unit to the first port for transmission on a transceiver 130.
COPYRIGHT: (C)2010,JPO&INPIT摘要翻译： 要解决的问题：为了防止系统性能由于在多天线处连接到多个天线的多个远程前端中的天线和收发器之间的长连接引起的信号损失而恶化 站。 解决方案：每个远程前端包括功率放大器（PA），低噪声放大器（LNA）以及第一和第二耦合单元。 在发送路径上，经由第一端口接收第一RF信号，由第一耦合单元路由到功率放大器，被放大以获得期望的输出功率电平，并且由第二耦合单元路由到第二端口用于经由 天线。 在接收路径上，通过第二端口接收第二RF信号，由第二耦合单元路由到LNA，被放大以获得更高的信号电平，并由第一耦合单元路由到第一端口以在收发信机上传输 （C）2010年，JPO＆INPIT
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