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1. 发明授权

US06289205B1 Transmitter for communication devices 失效
标题翻译：发射机用于通信设备
公开(公告)号：US06289205B1
公开(公告)日：2001-09-11
申请号：US09000752
申请日：1997-12-30
申请人： Ossi Pöllänen , Esko Järvinen
发明人： Ossi Pöllänen , Esko Järvinen
IPC分类号： H04B104
CPC分类号： H03G3/3036 , H03F2200/504
摘要： A transmitter (2) for communication devices according to the invention comprises a high-frequency power amplifier for amplifying the high-frequency signal to be transmitted, which high-frequency power amplifier includes an output stage for giving an amplified high-frequency signal, and measuring devices for measuring the power (Pdc) of the high-frequency signal. The measuring devices comprise devices (A1, RECT1, INT1, A2, RECT2, INT2) for measuring the voltage (VCE) and current (IE) of the high-frequency signal in said output stage, and means (M1, INT3) for calculating the power of the high-frequency signal on the basis of the measured high-frequency voltage (Vmeas) and high-frequency current (Imeas). A mobile station (1) according to the invention has a transmitter (2) for transmitting signals, which transmitter (2) includes a high-frequency power amplifier for amplifying the high-frequency signal to be transmitted. The high-frequency power amplifier includes an output stage (4) for giving an amplified high-frequency signal, and measuring devices for measuring the power (Pdc) of the high-frequency signal. The measuring devices comprise devices (A1, RECT1, INT1, A2, RECT2, INT2) for measuring the voltage (VCE) and current (IE) in said output stage (4), and means (M1, INT3) for calculating the power of the high-frequency signal on the basis of the measured high-frequency voltage (Vmeas) and high-frequency current (Imeas).
摘要翻译：根据本发明的用于通信设备的发射机（2）包括用于放大要发射的高频信号的高频功率放大器，该高频功率放大器包括用于给出放大的高频信号的输出级，以及用于测量高频信号功率（Pdc）的测量装置。测量装置包括用于测量所述输出级中的高频信号的电压（VCE）和电流（IE）的装置（A1，RECT1，INT1，A2，RECT2，INT2）和用于计算的装置（M1，INT3）基于测得的高频电压（Vmeas）和高频电流（Imeas）的高频信号的功率。根据本发明的移动台（1）具有用于发送信号的发射机（2），所述发射机（2）包括用于放大待传输的高频信号的高频功率放大器。高频功率放大器包括用于提供放大的高频信号的输出级（4）和用于测量高频信号功率（Pdc）的测量装置。测量装置包括用于测量所述输出级（4）中的电压（VCE）和电流（IE）的装置（A1，RECT1，INT1，A2，RECT2，INT2）和用于计算所述输出级基于测量的高频电压（Vmeas）和高频电流（Imeas）的高频信号。

2. 发明授权

US06670864B2 Matching circuit including a MEMS capacitor 有权
标题翻译：匹配电路包括一个MEMS电容器
公开(公告)号：US06670864B2
公开(公告)日：2003-12-30
申请号：US09892674
申请日：2001-06-27
申请人： Lassi Hyvönen , Esko Järvinen
发明人： Lassi Hyvönen , Esko Järvinen
IPC分类号： H03H738
CPC分类号： H03H7/40
摘要： The invention relates to a matching circuit for adapting an amplifier to load impedance at various output power levels of the amplifier, and a method for adapting the amplifier to load impedance at various output power levels of the amplifier. The matching circuit comprises an LC circuit, i.e. an electric circuit switching consisting of at least one coil and at least one capacitor for tuning harmonic signals resulting from amplifier non-linearities. At least one capacitor of the LC circuit (600, 602, 604, 606) is an adjustable microelectromechanical (MEMS) capacitor (602, 606). The LC circuit comprises an interface for receiving control signals (220) adjusting capacitance of the microelectromechanical (MEMS) capacitor. The control signals (220) adjust the capacitance of the microelectromechanical (MEMS) capacitor (602, 606) such that the LC circuit (600, 602, 604, 606) resonates at the frequency of the harmonic signal to be tuned.
摘要翻译：本发明涉及一种用于使放大器适应放大器的各种输出功率电平处的负载阻抗的匹配电路，以及用于使放大器适应放大器的各种输出功率电平处的负载阻抗的方法。匹配电路包括LC电路，即由至少一个线圈和至少一个用于调谐由放大器非线性产生的谐波信号的电容器组成的电路开关。 LC电路（600,602,604,606）的至少一个电容器是可调微机电（MEMS）电容器（602,606）。 LC电路包括用于接收调整微机电（MEMS）电容器的电容的控制信号（220）的接口。控制信号（220）调节微机电（MEMS）电容器（602,606）的电容，使得LC电路（600,602,604,606）以要调谐的谐波信号的频率谐振。

3. 发明授权

US06301467B1 Bias voltage controlled parallel active components 失效
标题翻译：偏置电压控制并联有源元件
公开(公告)号：US06301467B1
公开(公告)日：2001-10-09
申请号：US09082735
申请日：1998-05-21
申请人： Esko Järvinen , Jukka Varis
发明人： Esko Järvinen , Jukka Varis
IPC分类号： H04B146
CPC分类号： H03F3/62 , H03F1/302 , H03F3/72 , H03F2200/294 , H03F2200/372 , H04B1/48
摘要： The course of an oscillating signal is controlled in mutually alternative first active component (31) and second active component (32), both of which can be set into active state by a certain first value of a control signal brought to the component and which are in inactive state with a certain second value of the control signal. The signal is directed to pass through the first active component (31) by setting it into active state by a control signal (33) brought to it. At the same time, the second active component (32) is prevented from affecting the course of the signal by setting a control signal brought to it to a second value (107, 111).
摘要翻译：振荡信号的过程在相互替代的第一有源分量（31）和第二有源分量（32）中被控制，这两个有源分量（32）可以通过提供给分量的控制信号的某一第一值而被设置为有效状态，处于非活动状态，具有控制信号的某一第二值。该信号被引导通过第一有源部件（31）通过其被带到其的控制信号（33）而被设置成活动状态。同时，通过将提供给它的控制信号设置为第二值（107,111）来防止第二有源部件（32）影响信号的过程。

4. 发明授权

US08041315B2 Method and a device for adjusting power amplifier properties 有权
标题翻译：方法和调整功率放大器性能的装置
公开(公告)号：US08041315B2
公开(公告)日：2011-10-18
申请号：US10547240
申请日：2004-02-25
申请人： Miikka Hämäläinen , Esko Järvinen
发明人： Miikka Hämäläinen , Esko Järvinen
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H03F1/0261 , H03F1/0205 , H03F1/0227 , H03F1/32 , H03F3/24 , H03F2201/3203 , H03G3/004
摘要： A method and a device for tuning power amplifier (PA, 203) properties such as back-off. A peak-to-average value (PAR) of the amplifier input signal is first obtained by control means (206) and then used for adjusting the power amplifier (203) with tuning means (204, 208, 210) functionally connected to the amplifier (203). The suggested solution is advantageously exploited in a wireless communications device like a mobile terminal to optimize the performance thereof by, for example, reducing the power dissipation in the transmitter.
摘要翻译：一种用于调谐功率放大器（PA，203）属性（如退避）的方法和装置。放大器输入信号的峰值平均值（PAR）首先由控制装置（206）获得，然后用于通过功能上连接到放大器的调谐装置（204,208,210）来调节功率放大器（203）（203）。所提出的解决方案有利地被利用在诸如移动终端的无线通信设备中，以通过例如降低发射机中的功率消耗来优化其性能。

5. 发明授权

US07400865B2 Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method 有权
标题翻译：用于包络消除和恢复发射机架构和方法的可变带宽包络调制器
公开(公告)号：US07400865B2
公开(公告)日：2008-07-15
申请号：US11055133
申请日：2005-02-09
申请人： Esko Järvinen
发明人： Esko Järvinen
IPC分类号： H04B1/02 , H04B1/04
CPC分类号： H03C5/00 , H03F1/0205 , H03F1/0211 , H03F1/0227 , H03F1/32 , H03F3/24 , H03F2200/324 , H03F2200/351 , H03F2200/451 , H03F2200/504 , H03F2200/511 , H04B1/0067 , H04L27/0008 , H04L27/361
摘要： A RF transmitter has at least one amplifier having an input terminal for receiving a phase modulated signal to be transmitted on an RF carrier and an input node for receiving a modulation signal for amplitude modulating the RF carrier. The RF transmitter further includes an amplitude modulator having an output coupled to the input node of the power amplifier through a low-pass filter. The low-pass filter includes at least one variable filter component for varying a bandwidth of the low-pass filter. In a preferred embodiment an envelope elimination and restoration (EER) RF transmitter includes at least one power RF amplifier having the input terminal for receiving the phase modulated signal to be transmitted on the RF carrier, and further including an input power node for receiving a modulated voltage for amplitude modulating the RF carrier. The EER RF transmitter further includes a class-S modulator having a variable bandwidth low-pass filter having an output coupled to the input power node and including at least one first variable capacitance.
摘要翻译： RF发射机具有至少一个放大器，其具有用于接收在RF载波上传输的相位调制信号的输入端子和用于接收用于幅度调制RF载波的调制信号的输入节点。 RF发射机还包括幅度调制器，其具有通过低通滤波器耦合到功率放大器的输入节点的输出。低通滤波器包括用于改变低通滤波器的带宽的至少一个可变滤波器组件。在优选实施例中，包络消除和恢复（EER）RF发射器包括至少一个功率RF放大器，其具有用于接收要在RF载波上传输的相位调制信号的输入端，并且还包括输入功率节点，用于接收调制用于幅度调制RF载波的电压。 EER RF发射机还包括具有可变带宽低通滤波器的S类调制器，该可变带宽低通滤波器具有耦合到输入功率节点并包括至少一个第一可变电容的输出。

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