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1. 发明公开

EP2360835A1 Down-conversion using square wave local oscillator signals 有权
标题翻译： Abwärtswandlungmithilfe Rechteckwellen-Empfangsoszillatorsignalen
公开(公告)号：EP2360835A1
公开(公告)日：2011-08-24
申请号：EP10154072.2
申请日：2010-02-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： Andersson, Stefan , Tillman, Fredrik , Din, Imad ud , Eckerbert, Daniel
IPC分类号： H03D7/16 , H03D7/18
CPC分类号： H03D7/165 , H03D7/18 , H03D2200/0086
摘要： In a method of frequency down-converting an input signal to an output signal, a first local oscillator signal is generated as a square wave having a duty cycle of 1/3 or 2/3, and the input signal is mixed with the first oscillator signal to achieve a first down-converted signal, A second local oscillator signal is generated as a modified square wave having the same period time and a duty cycle of 2/3, of which one part has a positive amplitude and another part has a negative amplitude. The input signal is mixed with the second oscillator signal to achieve a second down-converted signal. The first oscillator signal has a delay of 1/4 of the period time to achieve a phase shift of π/2 between the oscillator signals, and at least one down-converted signal is multiplied by a pre-calculated factor. The resulting down-converted signals are added to achieve the output signal.
摘要翻译：在将输入信号下变频为输出信号的方法中，产生第一本地振荡器信号作为占空比为1/3或2/3的方波，并且输入信号与第一振荡器信号以实现第一下变频信号，第二本地振荡器信号被生成为具有相同周期时间和2/3的占空比的修改的方波，其中一个部分具有正幅度，另一部分具有负的振幅。输入信号与第二振荡器信号混合以实现第二下变频信号。第一振荡器信号具有周期时间的1/4的延迟，以实现振荡器信号之间的±/ 2的相移，并且至少一个下变频信号乘以预先计算的因子。所产生的下变频信号被加入以实现输出信号。

2. 发明公开

EP2456068A1 Low-noise amplifier with impedance boosting circuit 有权
标题翻译： RauscharmerVerstärkermitImpedanzerhöhungsschaltung
公开(公告)号：EP2456068A1
公开(公告)日：2012-05-23
申请号：EP10014844.4
申请日：2010-11-22
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Din, Imad ud , Sjöland, Henrik
IPC分类号： H03F1/02 , H03F1/22 , H03F1/56 , H03F3/45 , H03F3/193
CPC分类号： H03F3/193 , H03F1/0205 , H03F1/223 , H03F1/565 , H03F3/45179 , H03F3/45197 , H03F2200/181 , H03F2200/294 , H03F2200/451 , H03F2200/489 , H03F2200/492 , H03F2203/45316
摘要： A low-noise amplifier (300) is provided which comprises an input circuit (301) with a transistor (302), a gate inductor (304), and a source inductor (306), configured to operate with a variable bias current and an impedance boosting circuit (314) electrically connected to the input circuit (301). The impedance boosting circuit (314) comprises at least one switch (316) and at least one tail inductor (318) electrically connected with the at least one switch (316). The low-noise amplifier (300) is configured to activate the impedance boosting circuit (314) if the variable bias current is reduced, and the impedance boosting circuit (314) is configured to increase the input impedance of the low-noise amplifier (300) if the impedance boosting circuit (314) is activated.
摘要翻译：提供了一种低噪声放大器（300），其包括具有晶体管（302）的输入电路（301），栅极电感器（304）和源极电感器（306），其被配置为利用可变偏置电流和电连接到输入电路（301）的阻抗提升电路（314）。阻抗提升电路（314）包括与至少一个开关（316）电连接的至少一个开关（316）和至少一个尾电感器（318）。如果可变偏置电流减小，则低噪声放大器（300）被配置为激活阻抗提升电路（314），并且阻抗提升电路（314）被配置为增加低噪声放大器（300）的输入阻抗），如果阻抗提升电路（314）被激活。

3. 发明授权

EP2333949B1 Mixer arrangement 有权
标题翻译：混合器组件
公开(公告)号：EP2333949B1
公开(公告)日：2016-06-29
申请号：EP09178903.2
申请日：2009-12-11
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Din, Imad ud , Strandberg, Roland , Sundström, Lars
IPC分类号： H03D7/14 , H03D7/16
CPC分类号： H03D7/165 , H03D7/1441 , H03D7/1458 , H03D7/1483 , H03D2200/006

4. 发明授权

EP2733855B1 TRANSCEIVER FRONT-END 有权
标题翻译： SENDER接收机前端
公开(公告)号：EP2733855B1
公开(公告)日：2016-07-27
申请号：EP12192761.0
申请日：2012-11-15
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Sjöland, Henrik , Andersson, Stefan , Din, Imad ud , Wernehag, Johan
IPC分类号： H04B1/52
CPC分类号： H04B1/48 , H04B1/525 , H04B2001/485
摘要： A transceiver front-end for a communication device is connectable to a signal transmission and reception arrangement (310) adapted to transmit a transmit signal having a transmit frequency and to receive a receive signal having a receive frequency. The transceiver front-end is also connectable to a transmitter (330) adapted to produce the transmit signal, and to a receiver (320) adapted to process the receive signal. The transceiver front-end comprises a transmit frequency suppression filter arrangement (351, 352) and a receive frequency suppression filter arrangement (341, 342). The transmit frequency suppression filter arrangement is adapted to suppress transfer of a signal having the transmit frequency and to pass a signal having the receive frequency. The receive frequency suppression filter arrangement is adapted to suppress transfer of a signal having the receive frequency and to pass a signal having the transmit frequency. The transceiver front-end also comprises a transmit frequency cancellation arrangement (371, 372) and a receive frequency cancellation arrangement (361, 362). The transmit frequency cancellation arrangement is adapted to produce a first cancellation signal for cancellation, at receiver nodes (322, 323), of a suppressed signal having the transmit frequency, transferred by the transmit frequency suppression filter arrangement. The receive frequency cancellation arrangement is adapted to produce a second cancellation signal for cancellation, at signal transmission and reception arrangement nodes (312, 313), of a suppressed signal having the receive frequency, transferred by the receive frequency suppression filter arrangement. Corresponding transceiver, communication device and method are also disclosed.

5. 发明授权

EP2456068B1 Low-noise amplifier with impedance boosting circuit 有权
标题翻译：与阻抗增大电路的低噪声放大器
公开(公告)号：EP2456068B1
公开(公告)日：2013-06-19
申请号：EP10014844.4
申请日：2010-11-22
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Din, Imad ud , Sjöland, Henrik
IPC分类号： H03F1/02 , H03F1/22 , H03F1/56 , H03F3/45 , H03F3/193
CPC分类号： H03F3/193 , H03F1/0205 , H03F1/223 , H03F1/565 , H03F3/45179 , H03F3/45197 , H03F2200/181 , H03F2200/294 , H03F2200/451 , H03F2200/489 , H03F2200/492 , H03F2203/45316

6. 发明授权

EP2360835B1 Down-conversion using square wave local oscillator signals 有权
标题翻译：下变频用的方波的本地振荡器信号
公开(公告)号：EP2360835B1
公开(公告)日：2012-12-05
申请号：EP10154072.2
申请日：2010-02-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： Andersson, Stefan , Tillman, Fredrik , Din, Imad ud , Eckerbert, Daniel
IPC分类号： H03D7/16 , H03D7/18
CPC分类号： H03D7/165 , H03D7/18 , H03D2200/0086
摘要： In a method of frequency down-converting an input signal to an output signal, a first local oscillator signal is generated as a square wave having a duty cycle of 1/3 or 2/3, and the input signal is mixed with the first oscillator signal to achieve a first down-converted signal, A second local oscillator signal is generated as a modified square wave having the same period time and a duty cycle of 2/3, of which one part has a positive amplitude and another part has a negative amplitude. The input signal is mixed with the second oscillator signal to achieve a second down-converted signal. The first oscillator signal has a delay of 1/4 of the period time to achieve a phase shift of À/2 between the oscillator signals, and at least one down-converted signal is multiplied by a pre-calculated factor. The resulting down-converted signals are added to achieve the output signal.

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