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1. 发明授权

US07403750B2 Reuse of digital-to-analog converters in a multi-mode transmitter 有权
标题翻译：数模转换器在多模发射机中的重用
公开(公告)号：US07403750B2
公开(公告)日：2008-07-22
申请号：US11114732
申请日：2005-04-25
申请人： Seppo Rosnell , Mika Salmi , Simo Murtojärvi
发明人： Seppo Rosnell , Mika Salmi , Simo Murtojärvi
IPC分类号： H04B1/04
CPC分类号： H04B1/0003 , H04B1/406 , H04B2201/7071
摘要： A transmitter for generating modulated signals is shown, wherein in a first-type operating mode, a first digital signal is input into a digital-to-analog converter to obtain a first analog signal that is input into a first-type unit, in which a first-type modulated signal is generated in dependence on at least the first analog signal; and wherein in a second-type operating mode, a second digital signal is input into the digital-to-analog converter to obtain a second analog signal that is input into a second-type unit, in which a second-type modulated signal is generated in dependence on at least the second analog signal. Correspondingly, a wireless communication device is shown, as well as a base station, a module in a wireless communication device, a module in a base station, an integrated circuit, a method, a computer program and a computer program product.
摘要翻译：示出了用于产生调制信号的发射机，其中在第一类型操作模式中，第一数字信号被输入到数模转换器以获得被输入到第一类型单元中的第一模拟信号，其中根据至少第一模拟信号产生第一类型调制信号; 并且其中在第二类型操作模式中，第二数字信号被输入到数模转换器中以获得输入到第二类型单元的第二模拟信号，其中产生第二类型调制信号至少依赖于第二模拟信号。相应地，示出了无线通信设备，以及基站，无线通信设备中的模块，基站中的模块，集成电路，方法，计算机程序和计算机程序产品。

2. 发明授权

US07010057B2 Dual mode multi-slot EGPRS transmitter 有权
公开(公告)号：US07010057B2
公开(公告)日：2006-03-07
申请号：US10656403
申请日：2003-09-04
申请人： Jukka Väyrynen , Antti H. Rauhala , Simo Murtojärvi
发明人： Jukka Väyrynen , Antti H. Rauhala , Simo Murtojärvi
IPC分类号： H04L27/04
CPC分类号： H04B1/406 , H03F1/02 , H03F1/0205 , H03F1/3223 , H03G3/3047 , H04B1/0067 , H04B2001/0416
摘要： A method is disclosed to operate a dual mode multi-timeslot RF transmitter, as is an RF transmitter that include a control unit that operates in accordance with the method. The method includes, prior to a first timeslot, setting a plurality of control signals for the RF transmitter in accordance with a first modulation format used during the first timeslot; and during a guard period between the first timeslot and a next, temporally adjacent timeslot, setting the plurality of control signals for the RF transmitter in accordance with a second modulation format used during the second timeslot, where the first modulation format differs from the second modulation format. In a preferred embodiment one of the modulation formats is 8-PSK that uses a power amplifier in a fixed gain mode, the other of the modulation formats is GMSK that uses the power amplifier in a variable gain mode, one of the plurality of control signals sets the power amplifier gain mode and is ramped during the guard period, and another one of the plurality of control signals sets the power amplifier quiescent current.

3. 发明授权

US08089253B2 Power supplies for RF power amplifier 有权
标题翻译：射频功率放大器的电源
公开(公告)号：US08089253B2
公开(公告)日：2012-01-03
申请号：US12072621
申请日：2008-02-27
申请人： Simo Murtojärvi
发明人： Simo Murtojärvi
IPC分类号： G05F3/16 , G05F1/00
CPC分类号： H03F3/21 , H02J7/0065 , H02M3/156 , H02M3/158 , H02M3/1582 , H02M2001/007 , H03F1/0211
摘要： Switched-mode power supplies (SMPSs) and their control methods for radio frequency (RF) power amplifiers in battery-powered wireless transmitter devices involve a Boost-type SMPS and a Buck-type SMPS in cascade connection which are controlled so that high efficiency is maintained for various loads and transmission power levels. The Boost SMPS and the Buck SMPS can be controlled based on the mode of operation of the transmitter, such as the actual battery voltage, the needed output power, the selected frequency band, the selected RF power amplifier (PA), the selected modulation method of the transmission signal, and/or the selected PA voltage control method, such as the envelope elimination and restoration (EER) technique, the envelope tracking (ET) technique, or the power-level tracking (PT) technique.
摘要翻译：电池供电的无线发射机设备中的开关电源（SMPS）及其射频（RF）功率放大器的控制方法涉及级联连接中的升压型SMPS和降压型SMPS，这些控制使得高效率保持各种负载和传输功率水平。 Boost SMPS和Buck SMPS可以根据变送器的工作模式进行控制，例如实际的电池电压，所需的输出功率，所选频带，所选择的RF功率放大器（PA），选择的调制方式的传输信号和/或选择的PA电压控制方法，例如包络消除和恢复（EER）技术，包络跟踪（ET）技术或功率级跟踪（PT）技术。

4. 发明授权

US06392501B1 Method and arrangement for tuning a resonator 有权
标题翻译：用于调谐谐振器的方法和装置
公开(公告)号：US06392501B1
公开(公告)日：2002-05-21
申请号：US09551429
申请日：2000-04-18
申请人： Simo Murtojärvi
发明人： Simo Murtojärvi
IPC分类号： H03H502
CPC分类号： H03J3/20
摘要： The invention relates to a bandpass filter that follows the frequency of an input signal especially for reducing the noise on the receive band of mobile communications devices. More specifically the invention relates to a method and arrangement for tuning a resonator (100), where an input signal feeds the resonator in such a manner that the resonator oscillates at, the frequency of the input signal, and where the center frequency of the pass band of the resonator is set substantially to the frequency of the input, signal. In accordance with the invention, there is generated (200) a difference signal (Vc, Ve) proportional to the phase difference (&Dgr;&phgr;) between the input signal voltage (Vi) and resonator voltage (Vo) and the resonance frequency of the resonator is changed using the difference signal in such a manner that said phase difference becomes smaller. Using the invention, the resonance frequency of the resonator can be set relatively accurately to the input signal frequency because the phase characteristic of the resonator is at its steepest at the resonance frequency, whereby the phase difference detector reacts strongly on even the slightest changes in frequency.
摘要翻译：本发明涉及一种跟随输入信号的频率的带通滤波器，特别是用于减少移动通信设备的接收频带上的噪声。更具体地，本发明涉及一种用于调谐谐振器（100）的方法和装置，其中输入信号以谐振器在输入信号的频率振荡的方式馈送谐振器，并且其中通过的中心频率谐振器的频带基本上被设定为输入信号的频率。根据本发明，产生（200）与输入信号电压（Vi）和谐振电压（Vo）之间的相位差（DELTA））成比例的差分信号（Vc，Ve）和谐振器的谐振频率是使用差分信号以使得所述相位差变小的方式改变。使用本发明，谐振器的谐振频率可以相对于输入信号频率相对精确地设置，因为谐振器的相位特性在谐振频率处最陡，由此相位差检测器即使在频率上的微小变化也很强烈地反应。

5. 发明授权

US06259312B1 Circuit arrangement for adjusting the impedance of a differential active component 有权
标题翻译：用于调整差分有源分量的阻抗的电路装置
公开(公告)号：US06259312B1
公开(公告)日：2001-07-10
申请号：US09265165
申请日：1999-03-09
申请人： Simo Murtojärvi
发明人： Simo Murtojärvi
IPC分类号： G06G712
CPC分类号： H03F3/45071 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D2200/0043 , H03F1/56 , H03F2200/294 , H03F2200/372
摘要： The active component (400, 500) of a radio device comprises a first transistor (Q1) and a second transistor (Q2). The differential input of the active component comprises a first input line (RF+) and a second input line (RF−), of which the first input line is coupled to the base of the first transistor (Q1) and the second input line is coupled to the base of the second transistor (Q2). In order to match the input impedance there is cross-feedback (Rfb′) between the first transistor (Q1) and the second transistor (Q2).
摘要翻译：无线电设备的有源组件（400,500）包括第一晶体管（Q1）和第二晶体管（Q2）。有源分量的差分输入包括第一输入线（RF +）和第二输入线（RF-），其中第一输入线耦合到第一晶体管（Q1）的基极，并且第二输入线耦合到第二晶体管（Q2）的基极。为了匹配输入阻抗，在第一晶体管（Q1）和第二晶体管（Q2）之间存在交叉反馈（Rfb'）。

6. 发明授权

US07532680B2 Multi-mode radio frequency transmitter 有权
标题翻译：多模射频发射机
公开(公告)号：US07532680B2
公开(公告)日：2009-05-12
申请号：US11320181
申请日：2005-12-27
申请人： Jukka Väyrynen , Antti H. Rauhala , Simo Murtojärvi
发明人： Jukka Väyrynen , Antti H. Rauhala , Simo Murtojärvi
IPC分类号： H04L27/00
CPC分类号： H04B1/406 , H03F1/02 , H03F1/0205 , H03F1/3223 , H03G3/3047 , H04B1/0067 , H04B2001/0416
摘要： A method is disclosed to operate a multi-mode multi-timeslot RF transmitter, as is an RF transmitter that includes a control unit that operates in accordance with the method. The method includes, prior to a first timeslot, setting a plurality of control signals for the RF transmitter in accordance with a first modulation format used during the first timeslot; and during a guard period between the first timeslot and a next, temporally adjacent timeslot, setting the plurality of control signals for the RF transmitter in accordance with a second modulation format used during the second timeslot, where the first modulation format differs from the second modulation format.
摘要翻译：公开了一种操作多模多时隙RF发射机的方法，RF射频发射机还包括根据该方法操作的控制单元。该方法包括在第一时隙之前，根据在第一时隙期间使用的第一调制格式为RF发射机设置多个控制信号; 并且在所述第一时隙和下一个时间相邻的时隙之间的保护时段期间，根据在所述第二时隙期间使用的第二调制格式来设置所述RF发射机的所述多个控制信号，其中所述第一调制格式不同于所述第二调制格式。

7. 发明授权

US06668162B1 Method and an arrangement for compensating the temperature drift of a detector and a control signal in periodic control 有权
标题翻译：用于补偿检测器的温度漂移和周期性控制中的控制信号的方法和装置
公开(公告)号：US06668162B1
公开(公告)日：2003-12-23
申请号：US09496777
申请日：2000-02-03
申请人： Simo Murtojärvi
发明人： Simo Murtojärvi
IPC分类号： H04B1700
CPC分类号： H03F1/303
摘要： The object of the invention is the compensation of the drift in a detector and a control signal (TXC), particularly in the control of the transmit power (RFOUT) of an RF time division TDMA signal (RFIN), for the control of which there is performed a power detection. According to the invention the voltage difference between the output voltage of the detection and the control signal is stored during a transmission pause, and during the transmission state the stored voltage difference is used to compensate the temperature drift of the detection and the control signal (TXC) in generating the gain control voltage (VCTRL). The voltage difference is stored in a capacitor connected between the detector and a feedback connected differential amplifier by connecting the inputs of the differential amplifier to each other and by connecting the output of the differential amplifier to a constant potential when the control signal (TXC) is connected to an input of the differential amplifier which is not that input to which said capacitor is connected. Also alternative ways to perform the storage are presented.
摘要翻译：本发明的目的是对检测器和控制信号（TXC）中的漂移进行补偿，特别是在RF时分TDMA信号（RFIN）的发射功率（RFOUT）的控制中）执行功率检测。根据本发明，在传输暂停期间存储检测输出电压与控制信号之间的电压差，在传输状态期间，存储的电压差用于补偿检测温度漂移和控制信号（TXC ）产生增益控制电压（VCTRL）。通过将差分放大器的输入相互连接，并通过将控制信号（TXC）设定为恒定电位将差分放大器的输出连接到恒定电位，将电压差存储在连接在检测器和反馈连接的差分放大器之间的电容器中连接到不是所述电容器连接到的输入的差分放大器的输入。还提供了执行存储的替代方法。

8. 发明授权

US06393260B1 Method for attenuating spurious signals and receiver 有权
标题翻译：衰减信号和接收机的方法
公开(公告)号：US06393260B1
公开(公告)日：2002-05-21
申请号：US09292301
申请日：1999-04-15
申请人： Simo Murtojärvi , Antti Rauhala , Harri Kimppa
发明人： Simo Murtojärvi , Antti Rauhala , Harri Kimppa
IPC分类号： H04B102
CPC分类号： H04B1/109 , H03D7/1433 , H03D7/145 , H03D7/1458 , H03D2200/0033 , H03D2200/0043
摘要： The invention relates to a method and radio receiver for attenuating spurious signals when receiving (6 to 12) radio signals, when radio signals are mixed (10) to a second frequency, which may be the baseband frequency, for example. Spurious signals are caused by balance errors in the mixer (10) which result from component value fluctuations within tolerance limits. According to the invention, mixing is balanced by setting (12) variable-level bias voltages and/or currents to transistors in the mixer circuit (10). An advantage of the invention is that even-order spurious signals caused by balance errors in the mixing of a signal to a second frequency are considerably attenuated. The invention finds particular utility in a mobile communications device, for example.
摘要翻译：本发明涉及一种方法和无线电接收机，用于当无线电信号被混合（10）到例如可以是基带频率的第二频率时，在接收（6至12）个无线电信号时衰减杂散信号。寄生信号是由混频器（10）中的平衡误差引起的，这是由容限范围内的元件值波动引起的。根据本发明，通过将混合电路（10）中的（12）可变电平偏置电压和/或电流设置到晶体管来平衡混合。本发明的优点在于，将信号混合到第二频率时的平衡误差引起的均匀的杂散信号被显着衰减。本发明例如在移动通信设备中发现特定的用途。

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