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1. 发明授权

US06480706B1 High sensitivity radio receiver 有权
标题翻译：高灵敏度无线电接收机
公开(公告)号：US06480706B1
公开(公告)日：2002-11-12
申请号：US09466062
申请日：1999-12-17
申请人： Tetsuya Mimura , Kei Satoh , Shoichi Narahashi , Toshio Nojima
发明人： Tetsuya Mimura , Kei Satoh , Shoichi Narahashi , Toshio Nojima
IPC分类号： H04Q1112
CPC分类号： H01Q3/36 , H01Q1/364 , H04B1/036 , H04B1/18 , H04B7/084
摘要： A receiver directs the center of the main beam of the antenna directivity response in a desired direction by passing signals received by n antenna elements 1a to 1d through a phase shifter 3. An output from the phase shifter 3 is passed through a receiving filter 5 and is then amplified by a low noise amplifier 6 to be delivered as an output. The phase shifter 3 is confined together with the receiving filter 5 and the amplifier 6 in a cryostat 8, and the phase shifter 3 as well as the receiving filter 5 and the amplifier 6 are cooled down by cooling means 9 through a cold stage 9a, whereby the thermal noises generated therein are reduced to a minimum.
摘要翻译：接收器通过将n个天线元件1a至1d接收的信号通过移相器3，将天线方向性响应的主波束的中心在期望的方向上引导。来自移相器3的输出通过接收滤波器5和然后被低噪声放大器6放大，作为输出被输送。移相器3与低频恒温器8中的接收滤波器5和放大器6一起被限制，并且移相器3以及接收滤波器5和放大器6通过冷却装置9通过冷级9a冷却，由此其中产生的热噪声减小到最小。

2. 发明授权

US06792251B2 Arrangement and method for improving multi-carrier power amplifier efficiency 有权
标题翻译：改善多载波功率放大器效率的方案和方法
公开(公告)号：US06792251B2
公开(公告)日：2004-09-14
申请号：US09350719
申请日：1999-07-09
申请人： Björn Johannisson , Jarek Luberek
发明人： Björn Johannisson , Jarek Luberek
IPC分类号： H04Q1112
CPC分类号： H03F1/3252 , H01Q3/2605 , H01Q23/00 , H03F1/3229 , H03F1/3241 , H03F3/211
摘要： A multi-carrier power amplifying arrangement has a number of amplifying devices, each of which includes a main amplifier and a linearizing device. Furthermore it includes a device signal for adding the adding output signals from the amplifying devices in phase, a device for detecting the average phase error of the amplified signals and for providing a compensating control signal. The compensating control signal is provided to each amplifying device at least to compensate for the average phase error.
摘要翻译：多载波功率放大装置具有多个放大装置，每个放大装置包括主放大器和线性化装置。此外，它还包括一个装置信号，用于同相放大放大装置的相加输出信号，用于检测放大信号的平均相位误差的装置和用于提供补偿控制信号的装置。补偿控制信号至少提供给每个放大装置以补偿平均相位误差。

3. 发明授权

US06782244B2 Segmented power amplifier and method of control 有权
标题翻译：分段功率放大器及其控制方法
公开(公告)号：US06782244B2
公开(公告)日：2004-08-24
申请号：US09810009
申请日：2001-03-16
申请人： Victor E. Steel , Jon D. Jorgenson , Khoi Tam Vu
发明人： Victor E. Steel , Jon D. Jorgenson , Khoi Tam Vu
IPC分类号： H04Q1112
CPC分类号： H03F1/0277 , H03F1/0261 , H03F3/211 , H03F3/245 , H03F2200/411 , H03F2200/451 , H03F2203/21191 , H03F2203/21193
摘要： An amplifier provides two or more selectively enabled amplifier segments allowing a source signal to be amplified with a selectable output power. A bias circuit responsive to a bias control signal enables selectable combinations of one or more amplifier segments, thus allowing selection of a desired output power. Selecting a desired output signal power via the bias control signal corresponds to selecting an overall amplifier quiescent current that decreases with decreasing output signal power. Thus, the amplifier permits a controlling system, such as a mobile terminal (e.g., cellular telephone) to amplify a transmit signal with a selectable transmit signal output power and corresponding level of amplifier quiescent power consumption. Preferably, each segment comprises one or more transistor amplification stages which, when enabled by the bias circuit, are biased to permit maximum power linear amplification for the transmit signal.
摘要翻译：放大器提供两个或更多个选择性使能的放大器段，允许以可选择的输出功率放大源信号。响应于偏置控制信号的偏置电路使得能够选择一个或多个放大器段的组合，从而允许选择期望的输出功率。通过偏置控制信号选择所需的输出信号功率对应于选择随着输出信号功率的降低而减小的整体放大器静态电流。因此，放大器允许诸如移动终端（例如，蜂窝电话）之类的控制系统以可选择的发射信号输出功率和相应的放大器静态功率消耗水平来放大发射信号。优选地，每个段包括一个或多个晶体管放大级，当由偏置电路使能时，该晶体管放大级被偏置以允许发射信号的最大功率线性放大。

4. 发明授权

US06728520B2 System and method for constant loop gain in a closed loop circuit 失效
标题翻译：闭环电路中恒定环路增益的系统和方法
公开(公告)号：US06728520B2
公开(公告)日：2004-04-27
申请号：US09387137
申请日：1999-08-31
申请人： Phil Coan , Seng-Woon Chen
发明人： Phil Coan , Seng-Woon Chen
IPC分类号： H04Q1112
CPC分类号： H04B7/18534
摘要： A system and method for controlling transmitted output power of outdoor antenna units coupled to hand held wireless devices. When the antenna unit is operating with wireless network technology it may also be referred to as an outdoor unit. Transmit power level of an information signal is controlled in the outdoor unit by obtaining a control voltage from the hand held unit. The control voltage is used by the outdoor unit, to adjust the power level of the transmitted information signal. The transmit power level is adjusted by the outdoor unit performing the following steps: (1) detecting the transmit power level of the antenna unit, (2) determining whether the transmit power level is equal to a control voltage, and (3) adjusting the transmit power level based on the control voltage if the transmit power level is not equal to the control voltage. The adjustment of the transmit power level is accomplished by a closed loop circuit that maintains a constant loop gain.
摘要翻译：用于控制耦合到手持无线设备的室外天线单元的发射输出功率的系统和方法。当天线单元使用无线网络技术进行操作时，也可以称为室外机。通过从手持单元获取控制电压，在室外机中控制信息信号的发射功率电平。室外机使用控制电压来调整发送信息信号的功率电平。发射功率电平由室外机进行以下步骤的调整：（1）检测天线单元的发射功率电平，（2）确定发射功率电平是否等于控制电压;（3）如果发射功率电平不等于控制电压，则基于控制电压发射功率电平。发射功率电平的调节由保持恒定环路增益的闭环电路来实现。

5. 发明授权

US06735420B2 Transmit power control for multiple rate wireless communications 有权
标题翻译：发送多速率无线通信的功率控制
公开(公告)号：US06735420B2
公开(公告)日：2004-05-11
申请号：US10024949
申请日：2001-12-18
申请人： Keith R. Baldwin
发明人： Keith R. Baldwin
IPC分类号： H04Q1112
CPC分类号： H04W52/267 , H04B17/21 , H04W52/52
摘要： An RF device including a control loop for maximizing output power for each of several data rates or constellation types. The RF device includes a power detector, a power amplifier and a MAC that includes input and output adjust circuits. A power level value is generated from measured output power. The MAC compares an adjusted power level value with a set point value and generates an error value. The MAC adjusts a power control value based on the error value for controlling the gain of the power amplifier. The MAC uses a data rate signal indicative of a selected constellation type or data rate. The input adjust circuit stores one or more input adjustment values selected by the data select signal for adjusting the power level value. The output adjust circuit stores one or more output adjustment values selected by the data select signal for adjusting the power control value.
摘要翻译：一种RF装置，包括用于使多个数据速率或星座类型中的每一个最大化输出功率的控制回路。 RF设备包括功率检测器，功率放大器和包括输入和输出调整电路的MAC。从测量的输出功率产生功率电平值。 MAC将调整后的功率电平值与设定值进行比较，并生成错误值。 MAC基于用于控制功率放大器的增益的误差值来调整功率控制值。 MAC使用指示所选择的星座类型或数据速率的数据速率信号。输入调整电路存储由数据选择信号选择的用于调整功率电平值的一个或多个输入调整值。输出调整电路存储由数据选择信号选择的一个或多个输出调整值，以调整功率控制值。

6. 发明授权

US06377785B1 Portable telephone set and communications system incorporating same 失效
标题翻译：便携式电话机和通讯系统相结合
公开(公告)号：US06377785B1
公开(公告)日：2002-04-23
申请号：US09287586
申请日：1999-04-06
申请人： Tooru Ogino
发明人： Tooru Ogino
IPC分类号： H04Q1112
CPC分类号： H04W52/52
摘要： A portable telephone set controls the amplification factor of an amplifier to control the transmission power of the portable telephone set based on a control signal transmitted from the base station. If the control signal transmitted from the base station controls the transmission power so as to be equal to or smaller than a predetermined level, then a first switching means sets the amplifier to an ON-state. If the control signal transmitted from the base station controls the transmission power so as to be greater than the predetermined level, then the first switching means sets the amplifier to an OFF-state. While the amplifier is being set to the OFF-state by the first switching means, if the amplifier is set to the ON-state by a second switching means only when the user of the portable telephone set communicates via the portable telephone set, then the amplifier is in the ON-state only during the communication if the transmission power is controlled so as to exceed the predetermined level.
摘要翻译：便携式电话机控制放大器的放大系数，以便基于从基站发送的控制信号来控制便携式电话机的发送功率。如果从基站发送的控制信号将发送功率控制为等于或小于预定电平，则第一开关装置将放大器设置为接通状态。如果从基站发送的控制信号将发送功率控制为大于预定电平，则第一开关装置将放大器设置为截止状态。当放大器被第一开关装置设置为OFF状态时，只有当便携式电话机的用户经由便携式电话机进行通信时，放大器才被第二切换装置设置为ON状态，则如果发送功率被控制以超过预定电平，则放大器仅在通信期间处于接通状态。

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