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71. 发明授权

US06353735B1 MDG method for output signal generation 有权
标题翻译：用于输出信号生成的MDG方法
公开(公告)号：US06353735B1
公开(公告)日：2002-03-05
申请号：US09379497
申请日：1999-08-23
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
IPC分类号： H04B104
CPC分类号： H03D7/00 , H03C1/62 , H04B7/12
摘要： A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The up-conversion is accomplished by controlling a switch with an oscillating signal, the frequency of the oscillating signal being selected as a sub-harmonic of the desired output frequency. When the invention is being used as a frequency or phase reference, the oscillating signal is not modulated, and controls a switch that is connected to a bias signal. When the invention is being used in the frequency modulation (FM) or phase modulation (PM) implementations, the oscillating signal is modulated by an information signal before it causes the switch to gate the bias signal. In the amplitude modulation implementation (AM), the oscillating signal is not modulated, but rather causes the switch to gate a reference signal that is substantially equal to or proportional to the information signal. In the FM and PM implementations, the signal that is output from the switch is modulated substantially the same as the modulated oscillating signal. In the AM implementation, the signal that is output from the switch has an amplitude that is a function of the information signal. In both embodiments, the output of the switch is filtered, and the desired harmonic is output.
摘要翻译：描述了一种方法和系统，其中具有较低频率的信号被上变频到更高的频率。在一个实施例中，较高频率信号用作稳定的频率和相位参考。在另一个实施例中，本发明用作发射机。通过用振荡信号控制开关来实现上变换，振荡信号的频率被选择为所需输出频率的次谐波。当本发明用作频率或相位参考时，振荡信号不被调制，并且控制连接到偏置信号的开关。当本发明用于频率调制（FM）或相位调制（PM）实施方案中时，振荡信号在信号信号被调制之前，使开关门偏置偏置信号。在幅度调制实现（AM）中，振荡信号不被调制，而是使开关栅极基本上等于或者与信息信号成比例的参考信号。在FM和PM实现中，从开关输出的信号被调制为基本上与调制振荡信号相同。在AM实现中，从开关输出的信号具有作为信息信号的函数的幅度。在两个实施例中，开关的输出被滤波，并且输出所需的谐波。

72. 发明授权

US06334050B1 Arrangement and a method relating to a radio unit 失效
标题翻译：无线电单元的布置和方法
公开(公告)号：US06334050B1
公开(公告)日：2001-12-25
申请号：US09095942
申请日：1998-06-12
申请人： Ulf Bertil Christian Skärby
发明人： Ulf Bertil Christian Skärby
IPC分类号： H04B104
CPC分类号： H03G3/3068 , H03G3/3047
摘要： An arrangement for controlling and adjusting the output power of radio frequency signals sent from a radio unit (100) and the input power of radio frequency signals received by the radio unit. Variations in the amplification/attenuation of transmitter-and-receiver units are simultaneously compensated for in both the transmitter part and the receiver part of the units so that the amplification will remain the same irrespective of these variations in operation. A detector signal (Udet) is compared with a reference signal (Uref) by a difference amplifier (112), which generates a difference signal (Ue). The detector signal (Udet) is measured by a power sensing means provided in the vicinity of an antenna (113), and corresponds to the power at which radio frequency signals are transmitted. The reference signal (Uref) corresponds to a desired power of transmitted radio frequency signals. The difference signal (Ue) generated by the difference amplifier (112) controls the setting of the amplification of a first variable amplifier (109) and a second variable amplifier (110), adapted to amplify radio frequency signals that are transmitted and received respectively.
摘要翻译：一种用于控制和调整从无线电单元（100）发送的射频信号的输出功率和由无线电单元接收的射频信号的输入功率的装置。发射器和接收器单元的放大/衰减的变化在单元的发射器部分和接收器部分中同时被补偿，使得放大将保持相同，而与操作的这些变化无关。检测器信号（Udet）通过差分放大器（112）与参考信号（Uref）进行比较，差分放大器（112）产生差分信号（Ue）。检测器信号（Udet）由设置在天线（113）附近的功率检测装置测量，并且对应于发射射频信号的功率。参考信号（Uref）对应于所发送的射频信号的期望功率。由差分放大器（112）产生的差分信号（Ue）控制第一可变放大器（109）和第二可变放大器（110）的放大设置，其适于放大分别发射和接收的射频信号。

73. 发明授权

US06289216B1 Method and system for measuring standing wave ratio in a mobile communications system 失效
标题翻译：移动通信系统驻波比测量方法及系统
公开(公告)号：US06289216B1
公开(公告)日：2001-09-11
申请号：US09050888
申请日：1998-03-31
申请人： Kwang-Il Koh , Wan-Soo Kim , Jin-Soo Park
发明人： Kwang-Il Koh , Wan-Soo Kim , Jin-Soo Park
IPC分类号： H04B104
CPC分类号： G01R27/06
摘要： A method for measuring a voltage standing wave ratio (VSWR) without another test device for testing a radio unit of a base station in a mobile communications system is disclosed. The method for measuring a standing wave ratio for a transmission antenna in a base station of a mobile communications system, which includes at least one transmission antenna, comprises the steps of: (a) generating a test signal by using a given test terminal included in the base station and transmitting the generated test signal to the transmission antenna; (b) upon the test signal being transmitted to the transmission antenna, measuring the strength of a forward signal and a reflect signal for the transmission antenna; and (c) obtaining the difference between the strength of the forward signal, and the strength of the reflect signal and calculating the standing wave ratio for the transmission antenna by using the difference therebetween. A similar method is employed for measuring the standing wave ratio for a reception antenna. Moreover, in another embodiment, a valuable attenuator is adjusted to make the forward and reflect signals equal, and the adjusted signal is used to calculate the VSWR.
摘要翻译：公开了一种用于测量移动通信系统中用于测试基站的无线电单元的另一测试装置的电压驻波比（VSWR）的方法。包括至少一个发送天线的移动通信系统的基站中的发送天线的驻波比的测定方法包括以下步骤：（a）通过使用包含在并将生成的测试信号发送到发送天线; （b）在测试信号被发送到发射天线时，测量发射天线的正向信号强度和反射信号; 以及（c）通过使用它们之间的差来获得正向信号的强度与反射信号的强度之间的差异，并计算发射天线的驻波比。采用类似的方法来测量接收天线的驻波比。此外，在另一个实施例中，调整有价值的衰减器以使正向和反射信号相等，并且使用经调整的信号来计算VSWR。

74. 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。

75. 发明授权

US06282411B1 Mobile communication terminal device 有权
公开(公告)号：US06282411B1
公开(公告)日：2001-08-28
申请号：US09726396
申请日：2000-12-01
申请人： Koji Higuchi
发明人： Koji Higuchi
IPC分类号： H04B104
摘要： A mobile communication terminal device of the present invention includes: a voltage detector for detecting a battery voltage at the time of a voltage drop; a correction phase storage section for storing pieces of correction phase information each having a characteristic opposite to that of a phase error in a carrier wave produced due to a drop in the battery voltage; a correction phase outputting section for selecting correction phase information based on the battery voltage at the time of the voltage drop and outputting the selected correction phase information to a baseband modulator to change phase information in a baseband signal; and a modulator for modulating a carrier wave according to the baseband signal output from the correction phase outputting section so as to cancel the phase error included in the carrier wave.

76. 发明授权

US06173163B2 Switched sampling systems and methods for monitoring radio transmit power 失效
标题翻译：用于监测无线电发射功率的开关采样系统和方法
公开(公告)号：US06173163B2
公开(公告)日：2001-01-09
申请号：US09108014
申请日：1998-06-30
申请人： John Northcutt
发明人： John Northcutt
IPC分类号： H04B104
CPC分类号： H04W52/367 , H03F1/0261 , H04B2001/0416 , H04W52/362
摘要： A radio communications device includes a transmitter, a switch, and a measurement circuit wherein the transmitter transmits radio communications at a transmitted power. The switch couples a portion of the transmitted power during spaced apart intervals of time and blocks coupling of the portion of the transmitted power between the spaced apart intervals of time. The measuring circuit measures the coupled portion of the transmitted power during the spaced apart intervals of time. The radio communications device can also include a feedback circuit that maintains the transmitted power at a desired level responsive to the coupled portion of the transmitted power.
摘要翻译：无线电通信设备包括发射机，交换机和测量电路，其中发射机以发射功率发射无线电通信。开关在间隔的时间间隔中耦合一部分发射功率，并且在间隔开的时间间隔之间阻止发射功率的部分的耦合。测量电路在间隔开的时间间隔期间测量发射功率的耦合部分。无线电通信设备还可以包括反馈电路，其响应于发射功率的耦合部分将发射功率维持在期望的电平。

77. 发明授权

US06836646B2 Circuit and method for compensating for non-linear distortion 失效
标题翻译：用于补偿非线性失真的电路和方法
公开(公告)号：US06836646B2
公开(公告)日：2004-12-28
申请号：US10102313
申请日：2002-03-20
申请人： Hiroyuki Nagasaka
发明人： Hiroyuki Nagasaka
IPC分类号： H04B104
CPC分类号： H04B1/0475 , H03F1/3294 , H04L27/368
摘要： An apparatus for compensating for non-linear distortion generated during non-linear high-power amplification in a transmitter for non-linearly high-power amplifying a baseband signal by a high-power amplifier after quadrature modulation having a distortion extractor for extracting a non-linear distortion component from the non-linearly high-power amplified modulated signal. A quadrature modulator quadrature-modulates the non-linear distortion component into a baseband distortion component after phase adjustment. A distortion overlapping section overlaps the baseband signal with a phase-inverted distortion component of the baseband distortion component. A converter converts the non-linear distortion component output from the distortion extractor into a DC component. A controller automatically controls an attenuation of the output signal of the high-power amplifier to minimize the DC component output from the converter.
摘要翻译：一种用于补偿发射机中的非线性高功率放大期间产生的非线性失真的装置，用于在具有用于提取非线性高斯功率的失真提取器的正交调制之后由大功率放大器非线性高功率放大基带信号的基带信号，来自非线性高功率放大调制信号的线性失真分量。正交调制器在相位调整之后将非线性失真分量正交调制成基带失真分量。失真重叠部分与基带信号与基带失真分量的相位反相失真分量重叠。 A转换器将从失真提取器输出的非线性失真分量转换为DC分量。控制器自动控制大功率放大器的输出信号的衰减，以使从转换器输出的直流分量最小化。

78. 发明授权

US06790116B2 Radio communication apparatus and radio frequency correcting method 失效
标题翻译：无线电通信装置和射频校正方法
公开(公告)号：US06790116B2
公开(公告)日：2004-09-14
申请号：US09824784
申请日：2001-04-04
申请人： Atusi Inahashi
发明人： Atusi Inahashi
IPC分类号： H04B104
CPC分类号： H03J7/02 , H03J7/04
摘要： To ensure frequency stability of a radio frequency in a radio communication apparatus for generating the radio frequency synchronizing with a transmission path frequency of digital data transmitted from a wire digital transmission path and so on. Concerning influence of a difference of a transmission path frequency that obstructs stability of a radio carrier frequency, the difference of a transmission path frequency 12b is compared with a high-stability radio reference clock 22a, the difference frequency 17a is detected by a counter 71, and frequency offset of a radio-station-transmission signal of a local oscillator 61 is made on the basis of the differential frequency. By the operation, the influence of the difference of the transmission path frequency that obstructs the stability of the radio carrier frequency 63a can be compensated.
摘要翻译：确保无线电通信装置中的射频的频率稳定性，用于生成与从有线数字传输路径发送的数字数据的传输路径频率同步的射频等。关于妨碍无线电载波频率的稳定性的传输路径频率的差异的影响，将传输路径频率12b的差与高稳定性无线电参考时钟22a进行比较，通过计数器71检测差频17a，并且基于差分频率进行本地振荡器61的无线电台发送信号的频率偏移。通过该操作，可以补偿妨碍无线电载波频率63a的稳定性的传输路径频率的差异的影响。

79. 发明授权

US06763228B2 Precision automatic gain control circuit 有权
标题翻译：精密自动增益控制电路
公开(公告)号：US06763228B2
公开(公告)日：2004-07-13
申请号：US10027386
申请日：2001-12-21
申请人： John S. Prentice , Patrick J. Landy
发明人： John S. Prentice , Patrick J. Landy
IPC分类号： H04B104
CPC分类号： H03F3/45085 , H03G3/3052 , H03G7/06
摘要： An automatic gain control (AGC) amplifier including a high gain transimpedance amplifier, a resistive feedback network and multiple transconductance stages coupled in the feedback path of the AGC amplifier. The feedback network receives an input signal and is coupled to the output of the high gain amplifier and has multiple intermediate nodes. Each transconductance stage has an input coupled to an intermediate node of the feedback network and an output coupled to the input of the high gain amplifier. Each transconductance stage is independently controllable to position a virtual ground within the feedback network to control closed loop gain. Each transconductance stage may have a bias current input coupled to a bias current control circuit. The control circuit controls each bias current to vary the gain of the AGC amplifier. The bias currents may be linearly controlled employing a ramp function to achieve a linear in dB gain response.
摘要翻译：包括耦合在AGC放大器的反馈路径中的高增益跨阻抗放大器，电阻反馈网络和多个跨导级的自动增益控制（AGC）放大器。反馈网络接收输入信号并耦合到高增益放大器的输出并具有多个中间节点。每个跨导级具有耦合到反馈网络的中间节点的输入和耦合到高增益放大器的输入的输出。每个跨导级可独立控制，以便在反馈网络内定位虚拟地，以控制闭环增益。每个跨导级可以具有耦合到偏置电流控制电路的偏置电流输入。控制电路控制每个偏置电流以改变AGC放大器的增益。偏置电流可以采用斜坡函数进行线性控制，以实现dB增益响应的线性。

80. 发明授权

US06701138B2 Power amplifier control 有权
公开(公告)号：US06701138B2
公开(公告)日：2004-03-02
申请号：US09878461
申请日：2001-06-11
申请人： Darrell Epperson , Leendert Quist
发明人： Darrell Epperson , Leendert Quist
IPC分类号： H04B104
CPC分类号： H03F1/0211 , H03F2200/408 , H03F2200/504 , H03F2200/516 , H03G3/004 , H03G3/3047
摘要： The present invention provides for power amplifier control of amplifier circuitry including an input stage and one or more output stages. The input stage is powered separately from the output stage by a relatively fixed power source. The one or more output stages are supplied with power via a voltage regulator having a controllable output voltage. A closed loop control integrated with the amplifier stages forces the voltage output of the voltage regulator to track the profile of an adjustable control signal, such as VRAMP.

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