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1. 发明授权

US06826389B2 Transmitter and method of generating a transmission signal 有权
标题翻译：发送器和发送信号的生成方法
公开(公告)号：US06826389B2
公开(公告)日：2004-11-30
申请号：US09799839
申请日：2001-03-05
申请人： Winfrid Birth , Andreas Fröhlich
发明人： Winfrid Birth , Andreas Fröhlich
IPC分类号： H04B104
CPC分类号： H04L27/2017 , H03C1/545 , H03C3/40
摘要： The invention relates to a transmitter and a method of generating a transmission signal. A first modulation device 12 generates an uncompensated transmission signal Y(t) by modulating at least one baseband signal I, Q with a respective oscillation signal LOQ, LOI. The invention improves a transmitter with such a modulation device so as to reduce the expenditure for the filtering at a later stage that is necessary to attenuate undesirable components in the uncompensated transmission signal Y(t). This is achieved in that a compensation signal C(t) is formed on the output of a second modulation device (14), the compensation signal representing essentially the components to be compensated in the uncompensated transmission signal Y(t).
摘要翻译：本发明涉及发射机和产生发射信号的方法。第一调制装置12通过用相应的振荡信号LOQ调制至少一个基带信号I，Q来产生未补偿的发送信号Y（t）。本发明通过这种调制装置来改进发射机，从而减少在未补偿的传输信号Y（t）中衰减不需要的分量所需的后期的滤波费用。这是通过在第二调制装置（14）的输出上形成补偿信号C（t）的，补偿信号基本上表示在未补偿的发送信号Y（t）中待补偿的分量。

2. 发明授权

US06765929B1 Method and apparatus for combining signals 失效
标题翻译：用于组合信号的方法和装置
公开(公告)号：US06765929B1
公开(公告)日：2004-07-20
申请号：US09245295
申请日：1999-02-05
申请人： Robert Louis Cupo , E Anthony Hinds
发明人： Robert Louis Cupo , E Anthony Hinds
IPC分类号： H04B104
CPC分类号： H04H20/46 , H03C5/00 , H04B1/0483 , H04H20/72 , H04H2201/183 , H04H2201/20
摘要： An FM transmitter forms a Digital Audio Broadcasting (DAB) signal comprising a digital FM signal and an analog FM signal. The FM transmitter comprises an RF nonlinear amplifier coupled to a first antenna and an RF linear amplifier coupled to a second antenna. The RF non-linear amplifier and antenna transmit the analog FM signal. The RF linear amplifier and antenna transmit the digital FM signal. The FM transmitter controls the signal transmissions such that the transmitted analog FM signal and the transmitted digital FM signal are combined, or multiplexed, together in the channel itself (here, the atmosphere) to form the DAB signal.
摘要翻译： FM发射机形成包括数字FM信号和模拟FM信号的数字音频广播（DAB）信号。 FM发射机包括耦合到第一天线的RF非线性放大器和耦合到第二天线的RF线性放大器。 RF非线性放大器和天线发射模拟FM信号。 RF线性放大器和天线发射数字FM信号。 FM发射机控制信号传输，使得传输的模拟FM信号和发射的数字FM信号在信道本身（这里是大气）中组合或复用在一起，以形成DAB信号。

3. 发明授权

US06754476B1 Transportable radio transmitter, especially a remote 失效
标题翻译：可移动无线电发射机，特别是遥控器
公开(公告)号：US06754476B1
公开(公告)日：2004-06-22
申请号：US09503150
申请日：2000-02-11
申请人： Matthias Reinhardt
发明人： Matthias Reinhardt
IPC分类号： H04B104
CPC分类号： H03G3/3036
摘要： A portable radio transmitter, especially a remote for a motor vehicle, has a voltage generator for generating an alternating voltage signal, a power-regulatable amplifier stage for amplifying the alternating voltage signal, and a power-regulating circuit with an operational amplifier. One input of the operational amplifier is supplied with a power setting voltage and other input is supplied through a rectifier stage with a feedback voltage signal. A transmitting antenna is supplied by the amplified alternating-voltage signal. The voltage signal generator includes an oscillator and the amplifier stage contains at least one bipolar transistor with its base connected to the oscillator, in whose collector-emitter current path a current adjustment element, controlled by the operational output, is wired. The rectifier stage includes a pair of diodes connected in parallel and in opposite directions and a capacitor and a resistor that are connected in parallel with one of the diodes.
摘要翻译：一种便携式无线电发射器，特别是用于机动车辆的遥控器，具有用于产生交流电压信号的电压发生器，用于放大交流电压信号的功率可调节放大器级和具有运算放大器的功率调节电路。运算放大器的一个输入端具有功率设定电压，其他输入端通过整流级提供反馈电压信号。发射天线由放大的交流电压信号提供。电压信号发生器包括振荡器，并且放大器级包含至少一个双极晶体管，其基极连接到振荡器，其集电极 - 发射极电流路径中的电流调节元件由操作输出控制。整流器级包括并联连接并且相反方向的一对二极管以及与其中一个二极管并联连接的电容器和电阻器。

4. 发明授权

US06754474B1 Radio transmission system 有权
标题翻译：无线电传输系统
公开(公告)号：US06754474B1
公开(公告)日：2004-06-22
申请号：US09621815
申请日：2000-07-21
申请人： Patrick Savelli , Vassiliki Nikolopoulou
发明人： Patrick Savelli , Vassiliki Nikolopoulou
IPC分类号： H04B104
CPC分类号： H03C3/0983 , H03C3/0933 , H03C3/0975 , H03L7/1974 , H04B1/408 , H04L27/2017
摘要： In a transmission system, a modulator and a fractional frequency divider are introduced into the control loop of a voltage-controlled oscillator. It is shown that the benefit of this is a reduction in noise associated with the reduction of noise due to using a divider with a lower division coefficient. In one embodiment, the fractional divider is obtained by selecting different dividers in turn in accordance with temporal proportions corresponding to a required division fraction.
摘要翻译：在传输系统中，调制器和分数分频器被引入到压控振荡器的控制环路中。显示出这样的益处是由于使用具有较低分频系数的分频器而与降低噪声相关联的噪声的降低。在一个实施例中，通过根据对应于所需分割分数的时间比例依次选择不同的分频器来获得分数分频器。

5. 发明授权

US06745015B2 Method for automatic carrier suppression tuning of a wireless communication device 失效
标题翻译：一种用于无线通信设备的自动载波抑制调谐的方法
公开(公告)号：US06745015B2
公开(公告)日：2004-06-01
申请号：US09779805
申请日：2001-02-08
申请人： Donald M. Yochem
发明人： Donald M. Yochem
IPC分类号： H04B104
CPC分类号： H03C3/406
摘要： This invention is a method of carrier suppression tuning of a wireless communication device (100) utilizing a quadrature modulator (104) in a transmission path (102). A power detector (128) and a processor (132) are coupled to the ends of the transmission path (102) to provide feedback to the quadrature modulator (104) and, thus, minimizes carrier feedthrough. For this invention, the transmission path (102) of the device (100) is enabled and “I” and “Q” DC offset values are set to default values. Then, output voltages from the power detector (128) are sampled and the “I” DC offset value is adjusted based on the sampled voltages. Similarly, output voltages from the power detector (128) are sampled and the “Q” DC offset value is adjusted based on the sampled voltages. These steps of sampling and adjusting for the “I” and “Q” DC offset values are repeated until the power detector (128) produces an output that is less than a predetermined threshold value.
摘要翻译：本发明是利用传输路径（102）中的正交调制器（104）的无线通信设备（100）的载波抑制调谐的方法。功率检测器（128）和处理器（132）耦合到传输路径（102）的端部，以向正交调制器（104）提供反馈，从而使载波馈通最小化。对于本发明，设备（100）的传输路径（102）被使能，并且“I”和“Q”DC偏移值被设置为默认值。然后，来自功率检测器（128）的输出电压被采样，并且基于采样电压来调整“I”DC偏移值。类似地，来自功率检测器（128）的输出电压被采样，并且基于采样的电压来调整“Q”DC偏移值。重复对“I”和“Q”DC偏移值的采样和调整的这些步骤，直到功率检测器（128）产生小于预定阈值的输出。

6. 发明授权

US06708022B1 Power amplification system and mobile radio communication terminal 失效
标题翻译：功率放大系统和移动无线电通信终端
公开(公告)号：US06708022B1
公开(公告)日：2004-03-16
申请号：US09530878
申请日：2000-05-08
申请人： Atsushi Kurokawa , Masao Yamane
发明人： Atsushi Kurokawa , Masao Yamane
IPC分类号： H04B104
CPC分类号： H03F3/24 , H03F1/301 , H03F1/565 , H03F3/1935 , H03F3/245 , H03F2200/18 , H03F2200/451 , H04B1/0475
摘要： A power amplifier system has a high frequency power amplifier circuit section employing source-grounded enhancement type n-channel MESFETs for receiving a drain bias voltage and a gate bias voltage of zero volts or positive low potentials supplied from a unipolar power supply, and amplifying a superposed input signal therewith to output an amplified signal indicative of a change in drain currents. An output matching circuit section applies impedance matching to the amplified signal and outputs the resultant signal. A gate bias voltage circuit section supplies a gate bias voltage to the high frequency power amplifier circuit. When a forward direct current gate voltage is applied to a gate terminal with a source terminal coupled to ground, the DC gate voltage becomes greater than or equal to 0.65 volts, the DC gate voltage causing a gate current value per gate width of 100 micrometers to exceed 100 microamperes.
摘要翻译：功率放大器系统具有采用源极接地增强型n沟道MESFET的高频功率放大器电路部分，用于接收从单极电源提供的漏极偏置电压和零伏的栅极偏置电压或正低电位，并且放大叠加输入信号以输出表示漏极电流变化的放大信号。输出匹配电路部分对放大的信号施加阻抗匹配并输出结果信号。栅极偏压电路部分向高频功率放大器电路提供栅极偏置电压。当正向直流栅极电压施加到具有耦合到地的源极端子的栅极端子时，DC栅极电压变得大于或等于0.65伏，DC栅极电压使得每个栅极宽度的栅极电流值为100微米，超过100微安。

7. 发明授权

US06671500B2 Frequency plan 失效
公开(公告)号：US06671500B2
公开(公告)日：2003-12-30
申请号：US09823680
申请日：2001-03-30
申请人： Morten Damgaard , Alyosha C. Molnar , Rahul Magoon , William J. Domino , Andrew Zhang
发明人： Morten Damgaard , Alyosha C. Molnar , Rahul Magoon , William J. Domino , Andrew Zhang
IPC分类号： H04B104
CPC分类号： H03D7/163 , H03L7/185 , H03L7/1974 , H04B1/403
摘要： A system is disclosed for transmitting and receiving signals. The system includes the use of a frequency plan table a system for creating the frequency plan table. The frequency plan table relates carrier frequency channels to the operation of a synthesizer and a plurality of programmable frequency dividers in a locked loop. In a transmitter, a first programmable frequency divider accepts a reference signal and produces a comparison signal. A mixer accepts the reference signal and a transmission signal and produces a loop signal. A second programmable frequency divider accepts the loop signal and produces a loop signal having a divided intermediate frequency signal. A phase detector compares the comparison signal and the loop signal having a divided intermediate frequency and produces an output that controls a variable controlled oscillator. The variable controlled oscillator produces a modulated transmission signal.

8. 发明授权

US06636726B1 Method and arrangement for radio communication 有权
标题翻译：无线电通信的方法和布置
公开(公告)号：US06636726B1
公开(公告)日：2003-10-21
申请号：US09598583
申请日：2000-06-21
申请人： Lars Erhage
发明人： Lars Erhage
IPC分类号： H04B104
CPC分类号： H01Q3/36
摘要： A method and apparatus for radio communication are presented. The method employs an antenna having multiple transceivers, each capable for receiving a part-signal of a signal received by the antenna. The phase and amplitude of the part-signals are modulated with a code that corresponds to the part-signal. The part-signals are then digitally processed using an analog-to-digital converter, and then demodulated with a demodulation code that is an inverse of the modulation code. The demodulated signal is then divided into separable part-signals which correspond to different reception patterns of the antenna.
摘要翻译：提出了一种无线电通信的方法和装置。该方法采用具有多个收发机的天线，每个收发机能够接收由天线接收的信号的部分信号。部分信号的相位和幅度用对应于零件信号的代码进行调制。然后使用模拟 - 数字转换器对部分信号进行数字处理，然后用与调制码相反的解调码进行解调。然后将解调的信号分成对应于天线的不同接收模式的可分离部分信号。

9. 发明授权

US06600906B1 Up/down converter 失效
公开(公告)号：US06600906B1
公开(公告)日：2003-07-29
申请号：US09428849
申请日：1999-10-28
申请人： Satoshi Roppongi
发明人： Satoshi Roppongi
IPC分类号： H04B104
CPC分类号： H03D7/163
摘要： The invention provides an up/down converter with low phase noise. Signals from a first local oscillator are fed through a power splitter to first and second mixers. Signals from a second local oscillator and signals from the power splitter are mixed by the second mixer. The frequency component of the difference between the two signals is removed by a first bandpass filter and passed to a third mixer. Input signals are mixed with signals from the power splitter by the first mixer, and the lower frequency component of the output signals from the first mixer is removed by a second bandpass filter and is passed to the third mixer. Signals from the first and second bandpass filters are mixed by the third mixer. The higher frequency component of the output signals is removed by a low pass filter and is output.

10. 发明授权

US06574457B1 Two-transistor mixer 有权
标题翻译：双晶体管混频器
公开(公告)号：US06574457B1
公开(公告)日：2003-06-03
申请号：US09525782
申请日：2000-03-15
申请人： Vesa-Matti Sal{dot over (m)}inen
发明人： Vesa-Matti Sal{dot over (m)}inen
IPC分类号： H04B104
CPC分类号： H03D7/1441 , H03D7/1433 , H03D7/1458 , H03D7/1491 , H03D2200/0043
摘要： A two transistor mixer for mixing radio frequency signals in a communications device. A mixer core section comprised of a pair of matched semiconductor devices having their drain ports connected to a first common node through matched load resistors and their source ports connected to a second common node end. A local oscillator (LO) signal input connected to the first and second nodes, wherein the connection to the second node is through a current source. A radio frequency (RF) signal input connected to the gate ports of said pair of semiconductor devices and an intermediate frequency (IF) output obtained from the drain ports of said pair of semiconductor devices.
摘要翻译：一种用于在通信设备中混合射频信号的双晶体管混频器。混频器核心部分由一对匹配的半导体器件组成，其半导体器件的漏极端口通过匹配的负载电阻连接到第一公共节点，其源极端口连接到第二公共节点端。连接到第一和第二节点的本地振荡器（LO）信号输入，其中到第二节点的连接是通过电流源。连接到所述一对半导体器件的栅极端口的射频（RF）信号输入和从所述一对半导体器件的漏极端口获得的中频（IF）输出。

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