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    • 1. 发明申请
    • LOCAL OSCILLATOR SIGNAL GENERATION
    • 本地振荡器信号发生器
    • WO2015091140A1
    • 2015-06-25
    • PCT/EP2014/077186
    • 2014-12-10
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • JUSSILA, JarkkoSIVONEN, PeteSUHONEN, Markus
    • H03B27/00H04B1/00
    • H04B1/123H03B27/00H03F3/195H03F3/45928H03F2200/294H04L25/0292H04L25/085
    • A local oscillator signal generation circuit (150) for generating quadrature-related local oscillator signals comprises a source signal generator (153) arranged to generate a differential-mode source signal, a buffer stage (158) coupled to an output (156) of the source signal generator (153) and arranged to buffer the differential-mode source signal, and a quadrature generation stage (170) coupled to an output (168) of the buffer stage (158) and arranged to generate an in-phase local oscillator signal and a quadrature local oscillator signal from the buffered differential-mode source signal. The buffer stage (158) comprises a primary differential amplifier (159) having an input (162) coupled to an input (157) of the buffer stage (158), and a secondary differential amplifier (160) having an input (164) coupled to an output (163) of the primary differential amplifier (159) and an output (165) coupled to the output (168) of the buffer stage (158).
    • 用于产生与正交相关的本地振荡器信号的本地振荡器信号产生电路(150)包括被布置为产生差分模式源信号的源信号发生器(153),耦合到该信号的输出(156)的缓冲级 源信号发生器(153)并且被布置为缓冲差模源信号;以及正交产生级(170),耦合到缓冲级(158)的输出端(168)并被布置成产生同相本机振荡器信号 以及来自缓冲差分模式源信号的正交本地振荡器信号。 缓冲级(158)包括具有耦合到缓冲级(158)的输入(157)的输入(162)的一级差分放大器(159)和具有输入(164)耦合的二级差分放大器 连接到一级差分放大器(159)的输出端(163)和耦合到缓冲级(158)的输出端(168)的输出端(165)。
    • 2. 发明申请
    • A RESISTOR NETWORK AND MIXER CIRCUITS WITH PROGRAMBLE GAIN.
    • 具有可编程增益的电阻网络和混频器电路。
    • WO2015169335A1
    • 2015-11-12
    • PCT/EP2014/059122
    • 2014-05-05
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • JUSSILA, JarkkoSIVONEN, Pete
    • H04B1/00
    • H03G1/0088H01C10/50H04B1/0032H04B1/16
    • A resistor network (300) comprises one or more switched resistor branches (311, 312). Each switched resistor branch comprises a first resistor (321 ) connected in series with a first switch (331 ), wherein a first terminal (301 ) of the first resistor (321 ) is connected to the input terminal (IN) of the resistor network (300), a second terminal of the first resistor (321 ) is connected to a first terminal of the first switch (331) forming a middle node (304), and a second terminal (302) of the first switch (331 ) is connected to the output terminal (OUT) of the resistor network (300). Each switched resistor branch further comprises a second resistor (322) connected in series with a second switch (332), wherein the series connected second resistor (322) and second switch (332) is connected between the middle node (304) and a third terminal (303) of the one or more switched resistor branches (311, 312). The resistor network (300) further comprises a third resistor (323) connected between the input and output terminals of the resistor network (300).
    • 电阻网络(300)包括一个或多个开关电阻器分支(311,312)。 每个开关电阻器分支包括与第一开关(331)串联连接的第一电阻器(321),其中第一电阻器(321)的第一端子(301)连接到电阻器网络的输入端子(IN) 300),第一电阻器(321)的第二端子连接到形成中间节点(304)的第一开关(331)的第一端子,并且第一开关(331)的第二端子(302)被连接 到电阻网络(300)的输出端(OUT)。 每个开关电阻器分支还包括与第二开关(332)串联连接的第二电阻器(322),其中串联连接的第二电阻器(322)和第二开关(332)连接在中间节点(304)和第三开关 一个或多个开关电阻器分支(311,312)的端子(303)。 电阻网络(300)还包括连接在电阻网络(300)的输入和输出端子之间的第三电阻器(323)。