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1. 发明申请

WO1998010514A1 GAIN CONTROLLING METHOD AND RECEIVER 审中-公开
标题翻译：增益控制方法与接收机
公开(公告)号：WO1998010514A1
公开(公告)日：1998-03-12
申请号：PCT/JP1996002510
申请日：1996-09-05
申请人： MITSUBISHI DENKI KABUSHIKI KAISHA , TOMOE, Naohito
发明人： MITSUBISHI DENKI KABUSHIKI KAISHA
IPC分类号： H03G03/20
CPC分类号： H03G3/3078 , H03G3/3052 , H03G3/3068 , H04L7/04 , H04L7/08
摘要： For a nonperiodical burst signal transmitted from a mobile station in an AGC mode with an unknown transmission power, the AGC is converged in a short time at the beginning of the nonperiodical signal. For a periodical burst signal, transmission power control and interference wave detection are performed according to the presence/absence of the voice signal from the mobile station. These processings are for preventing erroneous control of the AGC and maintaining the communication quality of the radio base station system. In the case of a nonperiodic burst signal, the receiving level is detected at a high speed by only turning on/off an attenuator which has a quick transient response and fixing the gain of the AGC amplifier which has a slow transient response, both being provided as gain control elements. In the case of a periodic burst signal, the erroneous control of AGC is prevented and interferences are detected by utilizing synchronous words contained in the burst signal.
摘要翻译：对于从具有未知发射功率的AGC模式的移动站发送的非周期性突发信号，AGC在非周期性信号的开始处在短时间内收敛。对于周期性突发信号，根据来自移动台的语音信号的存在/不存在来执行发送功率控制和干扰波检测。这些处理用于防止AGC的错误控制和维持无线基站系统的通信质量。在非周期性突发信号的情况下，仅通过接通/断开具有快速瞬态响应的衰减器并且固定具有缓慢瞬态响应的AGC放大器的增益来检测接收电平，两者都被提供作为增益控制元件。在周期性突发信号的情况下，防止AGC的错误控制，并通过利用突发信号中包含的同步字来检测干扰。

2. 发明申请

WO1991007817A1 RF WIDEBAND HIGH POWER AMPLIFIER 审中-公开
标题翻译：射频宽带大功率放大器
公开(公告)号：WO1991007817A1
公开(公告)日：1991-05-30
申请号：PCT/EP1990001889
申请日：1990-11-12
申请人： MOTOROLA INC. , POWELL, Jack , HA, Thomas
发明人： MOTOROLA INC.
IPC分类号： H03G03/20
CPC分类号： H03G3/3047 , H03F1/3235 , H03F2201/3212
摘要： An r.f. wideband high power amplifier (1) receives an input signal at its input via a coupling (7) whenever a signal for amplification is applied to input port (15). The output of the amplifier (1) is tapped by a coupler (8) and fed to an input of a comparator (3). The input signal applied at port (14) is fed to a second input of comparator (3) via a delay line (5), arranged to introduce a delay substantially equal to that of the power amplifier (1). Comparator (3) thus produces at its output an error signal representative of the difference between the input signal fed via the amplified and the delayed path. Combiner (16) serves to introduce the amplified error signal to the amplifier output signal such that the error signal is in anti-phase therewith. The resultant signal produced at output port (4) thus has had feed forward distortion cancellation applied. The arrangement further includes compensating networks (8, 9) controlled by signals representing the amplitude and phase distortion introduced by power amplifier (1). The feedback control loops are arranged to function with a fast response time, thereby to achieve amplifier distortion correction which may be additional to prior art slow response amplitude and phase balancing.
摘要翻译：一个r.f. 宽带大功率放大器（1）每当放大信号被施加到输入端口（15）时，经由耦合器（7）在其输入处接收输入信号。放大器（1）的输出由耦合器（8）抽头并馈送到比较器（3）的输入端。在端口（14）处施加的输入信号经由延迟线（5）馈送到比较器（3）的第二输入端，布置成引入与功率放大器（1）的延迟基本相等的延迟。因此，比较器（3）在其输出端产生表示通过放大和延迟路径馈送的输入信号之间的差的误差信号。组合器（16）用于将放大的误差信号引入放大器输出信号，使得误差信号与其反相。因此，在输出端口（4）处产生的结果信号已经施加了前馈失真消除。该装置还包括由表示由功率放大器（1）引入的幅度和相位失真的信号控制的补偿网络（8,9）。反馈控制回路被布置为以快速响应时间起作用，从而实现可能是现有技术的慢响应幅度和相位平衡附加的放大器失真校正。

3. 发明申请

WO1991002406A1 CIRCUIT ARRANGEMENT FOR AUTOMATIC GAIN CONTROL 审中-公开
标题翻译：用于自动增益控制的电路布置
公开(公告)号：WO1991002406A1
公开(公告)日：1991-02-21
申请号：PCT/EP1990001127
申请日：1990-07-11
申请人： DEUTSCHE THOMSON-BRANDT GMBH , ZUCKER, Friedhelm
发明人： DEUTSCHE THOMSON-BRANDT GMBH
IPC分类号： H03G03/20
CPC分类号： H03G3/3026 , G11B7/0941
摘要： Automatic gain control, frequently abbreviated to AGC, is applied, for example, in radio receivers in order to control the maximum output level at a constant value independently of fluctuations in the receiver field strength. To obtain simple automatic gain control which requires no equalization, the input signal (S) to be amplified is fed via a controllable switch (SC) and a first low pass (TP1) to an amplifier (V) and via a second low pass (TP2) and an analog-digital converter (AD) to a microprocessor (MP) the output of which is connected to the input of a pulse width modulator (PM). The output of the pulse width modulator (PM) is connected to the control input of the controllable switch (SC). The microprocessor (MP) generates a control signal for the pulse width modulator (PM) in function of the digital values at the output of the analog-digital converter (AD); the pulse width modulator therefore modifies the pulse-width repetition rate of its output signal in function of the control signal. Application to automatic gain control.
摘要翻译：自动增益控制（通常缩写为AGC）被应用于例如无线电接收机中，以便独立于接收机场强度的波动来将最大输出电平控制在恒定值。为了获得不需要均衡的简单的自动增益控制，要被放大的输入信号（S）经由可控开关（SC）和第一低通（TP1）馈送到放大器（V）并经由第二低通 TP2）和模拟数字转换器（AD）连接到微处理器（MP），其输出端连接到脉冲宽度调制器（PM）的输入端。脉冲宽度调制器（PM）的输出端连接到可控开关（SC）的控制输入端。微处理器（MP）根据模拟数字转换器（AD）输出端的数字值产生脉冲宽度调制器（PM）的控制信号; 脉冲宽度调制器因此根据控制信号修改其输出信号的脉冲宽度重复率。应用于自动增益控制。

4. 发明申请

WO1991001592A1 AUTOMATIC GAIN CONTROL CIRCUIT 审中-公开
标题翻译：自动增益控制电路
公开(公告)号：WO1991001592A1
公开(公告)日：1991-02-07
申请号：PCT/JP1990000915
申请日：1990-07-16
申请人： PHILIPS JAPAN, LTD. , SUGAWA, Katsushi , ENDO, Katsuhiro
发明人： PHILIPS JAPAN, LTD.
IPC分类号： H03G03/20
CPC分类号： H03G3/3052 , H03G3/3068
摘要： An automatic gain control circuit that can be suitably used for communication equipment such as a radio receiver and communication equipment provided with such an automatic gain control circuit. Signals received by an antenna (20) pass through a first band-pass filter (21), an h-f amplifier stage (22), a mixer (24), a second band-pass filter (23) and an i-f amplifier stage (26), and are detected by a detector stage (27). The detected signals are output from an output terminal 28. A gain control voltage VAGC derived at the detector stage (27) from the output of the i-f amplifier stage (26) is fed to the first and second band-pass filters (21, 23) to shift the center frequencies in the passband of these filters from the received frequency by an amount corresponding to the voltage VAGC. Therefore, the gains decrease relative to the received signals in these filters.

5. 发明申请

WO1998025340A1 AUTOMATIC DYNAMIC RANGE CONTROLLING CIRCUIT 审中-公开
标题翻译：自动动态范围控制电路
公开(公告)号：WO1998025340A1
公开(公告)日：1998-06-11
申请号：PCT/JP1997004457
申请日：1997-12-05
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION , NTT ELECTRONICS CORPORATION , ASAHI KASEI MICROSYSTEMS CO., LTD. , HOSHINO, Toshio , DAIKOKU, Kazuhiro , YAMADA, Kenji , TAKASAKI, Tomokazu
发明人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION , NTT ELECTRONICS CORPORATION , ASAHI KASEI MICROSYSTEMS CO., LTD.
IPC分类号： H03G03/20
CPC分类号： H03G1/0088 , H03G3/30
摘要： An automatic dynamic range controlling circuit which is provided with a first circuit of a fixed gain, and a second circuit that has substantially the same propagation delay time as the first one and has a variable gain. The automatic dynamic range controlling circuit holds a peak value of an input signal and selects the first circuit when the peak value of the input signal is smaller than a reference signal level, and selects the second circuit when the peak value of the input signal exceeds the reference signal level. When the held peak value is smaller than the reference signal level, this controlling circuit is operated at the same gain as that of the first circuit for the input signal by setting the gain to that of the second circuit by the reference signal. When the held peak value exceeds the reference signal level, the gain of the second circuit is limited by the held peak value and the output level is made a specified level or below. Therefore, the discontinuity of a waveform of the output signal is prevented not only on the time base but also on the amplitude base for an excessive input signal level, thereby switching a selected circuit smoothly from the first one to the second one.
摘要翻译：具有固定增益的第一电路的自动动态范围控制电路和具有与第一电路基本上相同的传播延迟时间并具有可变增益的第二电路。自动动态范围控制电路保持输入信号的峰值，并且当输入信号的峰值小于参考信号电平时选择第一电路，并且当输入信号的峰值超过参考信号电平时选择第二电路参考信号电平。当保持的峰值小于参考信号电平时，通过将参考信号的增益设置为与第二电路的增益相比，该控制电路以与用于输入信号的第一电路相同的增益工作。当保持的峰值超过参考信号电平时，第二电路的增益被保持的峰值限制，并且输出电平被设定在指定电平以下。因此，输出信号的波形的不连续性不仅在时基上而且在过大的输入信号电平的幅度基础上被防止，从而使所选择的电路从第一个平滑地切换到第二个电路。

6. 发明申请

WO1996033555A1 TEMPERATURE COMPENSATED AUTOMATIC GAIN CONTROL 审中-公开
标题翻译：温度补偿自动增益控制
公开(公告)号：WO1996033555A1
公开(公告)日：1996-10-24
申请号：PCT/US1996005573
申请日：1996-04-22
申请人： QUALCOMM INCORPORATED
发明人： QUALCOMM INCORPORATED , KORNFELD, Richard, K.
IPC分类号： H03G03/20
CPC分类号： H03G3/3042 , H04B1/036 , H04B1/04
摘要： The process and apparatus of the present invention limits the output power of a radio in response to the temperature of key components of the radio. Temperature sensors (1025) measure the temperature of the components and send the temperature signals to power control circuitry (1030). The transmit power is measured (1020) at the output of the power amplifier (1015). As the temperature increases, the power control circuitry (1030) reduces the transmit power to reduce the temperature of the key components. The power is monitored so that it is not reduced below the power level required by standards.
摘要翻译：本发明的方法和装置响应于无线电的关键部件的温度来限制无线电的输出功率。温度传感器（1025）测量组件的温度并将温度信号发送到功率控制电路（1030）。在功率放大器（1015）的输出处测量发射功率（1020）。随着温度升高，功率控制电路（1030）降低发射功率以降低关键部件的温度。监控电源，使其不降低到标准要求的功率水平以下。

7. 发明申请

WO1996029779A2 A METHOD FOR IMPLEMENTING A SOUND REPRODUCTION SYSTEM FOR A LARGE SPACE, AND A SOUND REPRODUCTION SYSTEM 审中-公开
标题翻译：一种用于实现大空间的声音再现系统和声音再现系统的方法
公开(公告)号：WO1996029779A2
公开(公告)日：1996-09-26
申请号：PCT/FI1996000156
申请日：1996-03-15
申请人： FARM FILM OY , LAITINEN, Arvo, Olavi , VUORI, Jarkko, Tapio
发明人： FARM FILM OY
IPC分类号： H03G03/20
CPC分类号： H04R29/007 , H04R27/00 , H04S1/007
摘要： The invention relates to a method for implementing a sound reproduction system for a large space, and a sound reproduction system. In accordance with the invention, a) loudspeaker units (LU) are placed in different parts of said space, and the information to be transmitted by the loudspeaker unit to its environment is fed to said loudspeaker unit from an information source (CPU) common to several loudspeaker units, b) determinations specific to said loudspeaker unit are carried out in a separate loudspeaker unit (LU), and c) a message is sent from the loudspeaker unit (LU) to the common information source (CPU), said message (20) containing information obtained on the basis of said determination. For accomplishing a system that is able to transmit individual information effectively to the different parts of the system, a reply message is transmitted in response to said message from the common information source (CPU) to the loudspeaker unit that has carried out the transmission, said reply message containing such information intended to be transmitted by the loudspeaker unit in which the message depends on the information received by the common information source.
摘要翻译：本发明涉及一种用于实现大空间的声音再现系统的方法和声音再现系统。根据本发明，a）扬声器单元（LU）被放置在所述空间的不同部分中，并且由扬声器单元发送到其环境的信息由公共信息源（CPU）的信息源（CPU）馈送到所述扬声器单元多个扬声器单元，b）特定于所述扬声器单元的确定在单独的扬声器单元（LU）中执行，以及c）将消息从扬声器单元（LU）发送到公共信息源（CPU），所述消息 20）包含基于所述确定获得的信息。为了实现能够将个人信息有效地发送到系统的不同部分的系统，响应于从公共信息源（CPU）到已经执行传输的扬声器单元的所述消息来发送应答消息，所述响应消息答复消息包含旨在由扬声器单元发送的信息，其中消息取决于由公共信息源接收的信息。

8. 发明申请

WO1995030274A1 METHOD AND APPARATUS FOR AUTOMATIC GAIN CONTROL IN A DIGITAL RECEIVER 审中-公开
标题翻译：数字接收机自动增益控制的方法与装置
公开(公告)号：WO1995030274A1
公开(公告)日：1995-11-09
申请号：PCT/US1995005250
申请日：1995-04-28
申请人： QUALCOMM INCORPORATED
发明人： QUALCOMM INCORPORATED , PETERZELL, Paul, E. , WILSON, Nathaniel, B. , BLACK, Peter, J.
IPC分类号： H03G03/20
CPC分类号： H03G3/3078 , H03G3/3089
摘要： An automatic gain control (AGC) apparatus for a digital receiver is disclosed herein. The AGC apparatus includes an adjustable gain amplifier (18) having an input port for receiving an input signal, a control port for receiving a gain control signal, and an output port for providing an output signal. The AGC apparatus further includes a measurement circuit for generating a received power signal based on the power of the output signal. A saturating integrator (22) compares the received power signal to a reference signal and generates a gain control signal in response to a result of the comparison. The saturating integrator (22) includes a decision circuit (46) for enabling integration based on values of the received power signal, the reference signal, and the gain control signal. In a preferred implementation, the utilization of an input limiter in conjunction with an analog to digital converter enables accommodation of an increased input signal dynamic range.
摘要翻译：本文公开了一种用于数字接收机的自动增益控制（AGC）装置。 AGC装置包括具有用于接收输入信号的输入端口的可调增益放大器（18），用于接收增益控制信号的控制端口和用于提供输出信号的输出端口。 AGC装置还包括用于基于输出信号的功率产生接收功率信号的测量电路。饱和积分器（22）将接收的功率信号与参考信号进行比较，并且响应于比较的结果生成增益控制信号。饱和积分器（22）包括用于基于接收功率信号，参考信号和增益控制信号的值进行积分的判定电路（46）。在优选实施方式中，输入限幅器与模数转换器结合使用能够调节增加的输入信号动态范围。

9. 发明申请

WO1994001930A1 RF AMPLIFIER BIAS CONTROL METHOD AND APPARATUS 审中-公开
标题翻译：射频放大器偏置控制方法和装置
公开(公告)号：WO1994001930A1
公开(公告)日：1994-01-20
申请号：PCT/US1993005623
申请日：1993-06-14
申请人： MOTOROLA INC.
发明人： MOTOROLA INC. , SOLIDAY, John, L.
IPC分类号： H03G03/20
CPC分类号： H03F1/0272 , H03F1/0261 , H03F1/0266 , H03F2200/192 , H03F2200/204 , H03G3/3042
摘要： A bias control circuit (100) for use with an RF amplifier (102) comprises a detector (112) coupled to the RF amplifier (102) for detecting a signal proportional to the RF amplifier's output signal power level (POUT), a comparator (106), coupled to the detector (112) for comparing the detected signal to a reference (Vref), and an adjustment circuit (108), coupled to the comparator (106) and the RF amplifier (102), for adjusting the amplifier's bias voltage (Vbias) as a function of the comparison in order to control the RF amplifier's quiescent operating point (bias current) and thereby optimize the RF amplifier's operation for selected operating performance characteristics like gain performance, intermodulation performance, and efficiency. In accordance with another embodiment (200), the RF amplifier's quiescent operating point is adjusted as a function of the current drawn by the RF amplifier (202). In accordance with yet another embodiment (300), the RF amplifier's quiescent operating point is adjusted as a function of the RF amplifier's (302) detected input power level (PIN).
摘要翻译：与RF放大器（102）一起使用的偏置控制电路（100）包括耦合到RF放大器（102）的检测器（112），用于检测与RF放大器的输出信号功率电平（POUT）成比例的信号，比较器 106），耦合到检测器（112），用于将检测到的信号与参考（Vref）进行比较;以及调整电路（108），耦合到比较器（106）和RF放大器（102），用于调整放大器的偏置电压（Vbias）作为比较的函数，以便控制RF放大器的静态工作点（偏置电流），从而优化RF放大器对所选操作性能特性的操作，如增益性能，互调性能和效率。根据另一实施例（200），根据RF放大器（202）所绘制的电流调节RF放大器的静态工作点。根据又一实施例（300），根据RF放大器（302）检测到的输入功率电平（PIN）的函数调整RF放大器的静态工作点。

10. 发明申请

WO1990006018A1 POWER AMPLIFIER FOR A RADIO FREQUENCY SIGNAL 审中-公开
标题翻译：用于无线电频率信号的功率放大器
公开(公告)号：WO1990006018A1
公开(公告)日：1990-05-31
申请号：PCT/US1989004311
申请日：1989-10-05
申请人： MOTOROLA, INC.
发明人： MOTOROLA, INC. , JENSEN, Ole, Hederang , LITTLE, Richard, I. , SCHULER, Joseph, John
IPC分类号： H03G03/20
CPC分类号： H04W52/367 , H03G3/3047 , H04W52/362 , H04W52/52
摘要： A power amplifier is provided for amplifying a radio frequency signal such as in a burst modulation manner for use in GSM cellular radio. The amplifier has means, such as a ROM (16), for producing a predetermined sequence of values in response to a control pulse. Means (21) are provided for converting each value into a power control signal, and control means (9) are provided for controlling the amplifier output power in accordance with said power control signal. In this manner, the power/time characteristic can be made to take the form of a raised cosine. The invention also provides power selection means for selecting a nominal output level from a plurality of discrete levels and for selecting power sub-levels offset from said selected level. An indication is recorded as to which sub-level best represents the nominal power level.

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