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91. 发明公开

EP1878121A2 A DIGITAL AMPLITUDE MODULATION TRANSMITTER WITH PULSE WIDTH MODULATING RF DRIVE 有权
标题翻译：数字幅度调制发射脉冲宽度调制RF控制
公开(公告)号：EP1878121A2
公开(公告)日：2008-01-16
申请号：EP06748514.4
申请日：2006-03-20
申请人： Harris Corporation
发明人： LUU, Ky Thoai
IPC分类号： H04B1/02 , H03C1/52
CPC分类号： H03C1/36 , H03C1/00 , H03C1/62 , H04B1/04
摘要： A digital amplitude modulation (AM) transmitter with pulse width modulating RF drive is presented. A plurality of RF amplifiers, each, when turned on, amplifies an applied RF drive signal by the same amount to provide a unit step RF output. An encoder supplies turn-on signals to turn on a number of the RF amplifiers wherein the number varies as a function of the value of an applied audio signal. The width of the unit step RF output is varied as a function of the number of the RF amplifiers that are turned on.

92. 发明公开

EP1623574A2 INTEGER CYCLE FREQUENCY HOPPING MODULATION FOR THE RADIO FREQUENCY TRANSMISSION OF HIGH SPEED DATA 审中-公开
标题翻译：整数频率调制JUMP高频用更快的数据
公开(公告)号：EP1623574A2
公开(公告)日：2006-02-08
申请号：EP04749306.9
申请日：2004-01-27
申请人： XG TECHNOLOGY, LLC
发明人： BOBIER, Joseph , KHAN, Nadeem , GREER, Mike
IPC分类号： H04N7/12 , H03K7/06 , H04L27/04 , H03C1/52 , H03C1/62 , H04B1/04
CPC分类号： H04L27/122 , H04B1/713 , H04L27/10 , H04L27/2014
摘要： The invention disclosed in this application uses a method of modulation named Integer Cycle Frequency Hopping (ICFH). (The Single Cycle DDS) will produce un-modulated digital pulses to (the D/A) converter) such that it outputs sine wave of consistent frequency. If data is present, the SCDDS will ouput digital pulses of a different overall period and the D/A converter will convert to sine wavw of a different frequency. The SCDDS will output X number of samples, (8,16,32, etc. depending upon desired resolution) to (the D/A converter). The digitally formed sine wave output of the D/A is filtered to remove higher frequency components and a pure sine wave is resulted.

93. 发明公开

EP1080529A1 QUADRATURE MODULATOR WITH CARRIER LEAKAGE COMPENSATION 审中-公开
标题翻译：休息载流子补偿平方调制器
公开(公告)号：EP1080529A1
公开(公告)日：2001-03-07
申请号：EP00915166.3
申请日：2000-03-06
申请人： Koninklijke Philips Electronics N.V.
发明人： MOHINDRA, Rishi , STROET, Peter
IPC分类号： H03C1/52 , H04L27/36
CPC分类号： H03C5/00 , H03C3/406 , H04L27/367
摘要： A quadrature modulator with set-and-forget carrier leakage compensation. The quadrature modulator comprises an in-phase and a quadrature branch. In the in-phase and quadrature branches, real-time digital signals are converted to analog signals, the analog signals are filtered, and the filtered analog signals are modulated with a carrier signal and a ninety degrees phase shifted version of the carrier, respectively. The modulated in-phase and quadrature signals are added so as to form a quadrature amplitude modulated signal. Preferably upon powering up of the quadrature modulator, in the in-phase and quadrature branches, carrier leakage is measured. The measured carrier leakage is supplied to comparators, which toggle, when carrier leakage is minimal in the respective in-phase and quadrature branches. Upon powering up of the quadrature modulator, the state machine starts signal generators which inject compensation signals into the in-phase and quadrature branches, respectively, so that dc-offsets in the in-phase and quadrature branches are reduced, thereby reducing the carrier leakage in the in-phase and quadrature branches. When the comparators toggle, the state machine is commanded to stop controlling the corresponding signal generators of which output signals are then frozen.

94. 发明公开

EP1027768A1 DIGITAL MODULATION EMPLOYING SINGLE SIDEBAND WITH SUPPRESSED CARRIER 审中-公开
标题翻译：数字单带抑制载波
公开(公告)号：EP1027768A1
公开(公告)日：2000-08-16
申请号：EP98956404.2
申请日：1998-10-30
申请人： Walker, Harold R.
发明人： Walker, Harold R.
IPC分类号： H03C1/52 , H03M5/08 , H03M5/14 , H04L27/04
CPC分类号： H04L25/493 , H03M5/08 , H03M5/12 , H04L25/4904 , H04L27/02 , H04L27/2025
摘要： A method of transmitting 'biphase' encoded digital signals comprised of the steps of receiving one of a multiplicity of input data bits, wherein each data bit is characterized by a temporal data bit length (12), a temporal bit center (T3) and a temporal state indicative of a logical 1 or 0, and generating an encoded digital baseband signal characterized by a temporal state indicate of a logical state therein the encoded digital baseband signal changes its temporal state according to whether the one input data bit changes its temporal state at a time prior to (T1 or 6) or after (T2 or 7) the temporal bit center (T3). A single sideband with this coding is generated independently by digital synthesis. Detection of the single sideband does not require re-insertion of the carrier.

95. 发明授权

EP3384647B1 WIDEBAND POLAR RECEIVER ARCHITECTURE AND SIGNAL PROCESSING METHODS 有权转让
公开(公告)号：EP3384647B1
公开(公告)日：2021-07-21
申请号：EP16871639.7
申请日：2016-12-02
发明人： XU, Yang , HERMOSO, Sara Munoz , PEREZ, Roc Berenguer
IPC分类号： H04L27/04 , H03C1/52

96. 发明授权

EP1776777B1 METHOD AND TRANSMITTER EMPLOYING AN ANTENNA AND BALANCED AMPLIFIER ARCHITECTURE WHICH PROVIDES POWER AMPLIFIER LOAD BALANCING INDEPENDENT OF SINGLE OR DUAL SIGNAL OPERATION OF THE TRANSMITTER 有权
标题翻译：方法和Station支持REGARDLESS单或双信号操作变送器的提供动力AMP-NLB天线和平衡放大器架构
公开(公告)号：EP1776777B1
公开(公告)日：2015-10-14
申请号：EP05774586.1
申请日：2005-07-08
申请人： Cisco Technology, Inc.
发明人： ANDERSON, Fred , STAGER, Paul , LYONS, Daniel
IPC分类号： H04B7/185 , H04K1/02 , H04L25/03 , H04L25/49 , H04J3/26 , H04J3/22 , H04J1/14 , H04J3/08 , H04L27/36 , H04L27/04 , H04L27/12 , H04L27/20 , H04L1/00 , H04L25/08 , H03C1/52 , H03D1/24 , H03D1/04 , H03D1/06 , H04B7/06 , H04B1/04
CPC分类号： H04B7/0693 , H04B1/0483 , H04B7/0613

97. 发明公开

EP2870698A1 SYSTEM AND METHOD FOR MOBILE DATA EXPANSION 审中-公开
标题翻译：系统和方法对移动数据扩展
公开(公告)号：EP2870698A1
公开(公告)日：2015-05-13
申请号：EP13813585.0
申请日：2013-05-20
申请人： Neutronic Perpetual Innovations LLC
发明人： BERRY, Terrance
IPC分类号： H04B1/38 , H03C1/52 , H04W36/00 , H04M1/00
CPC分类号： H04B7/2606 , H04B1/3888 , H04W16/26
摘要： A data expansion system that provides continuum of discrete wireless small cell coverage areas for mobile terminals includes a set of roadway reflectors (610) configured to provide wireless broadband data services to a mobile terminal (490). Each reflector (100) includes processing circuitry (410) configured to establish communications between the mobile terminal (490) and a backhaul network (480). Each reflector (100) includes a wireless transceiver (420) configured to transmit and receive data. Each reflector (100) includes a power source (440) that converts solar energy into electricity. Each reflector (100) includes a housing (460) configured to contain the processing circuitry, the transceiver, and the power source. The housing (460) has a raised reflective surface.

98. 发明公开

EP1776777A4 A TRANSMIT SYSTEM EMPLOYING AN ANTENNA AND BALANCED AMPLIFIER ARCHITECTURE WHICH PROVIDES POWER AMPLIFIER LOAD BALANCING INDEPENDENT OF SINGLE OR DUAL SIGNAL OPERATION OF THE TRANSMITTER 有权
标题翻译：随着对REGARDLESS单或双信号操作变送器的提供动力AMP-NLB天线和平衡放大器架构传输系统
公开(公告)号：EP1776777A4
公开(公告)日：2012-09-26
申请号：EP05774586
申请日：2005-07-08
申请人： CISCO TECH INC
发明人： ANDERSON FRED , STAGER PAUL , LYONS DANIEL
IPC分类号： H04B7/185 , H03C1/52 , H03D1/04 , H03D1/06 , H03D1/24 , H04B1/04 , H04B7/06 , H04J1/14 , H04J3/08 , H04J3/22 , H04J3/26 , H04K1/02 , H04L1/00 , H04L25/03 , H04L25/08 , H04L25/49 , H04L27/04 , H04L27/12 , H04L27/20 , H04L27/36
CPC分类号： H04B7/0693 , H04B1/0483 , H04B7/0613

99. 发明公开

EP1478145A1 METHOD FOR DETECTING QUADRATURE MODULATOR CARRIER LEAK ADJUSTING POINT BY GEOMETRICAL ANALYSIS/CALCULATION METHOD, CARRIER LEAK ADJUSTING METHOD, AND QUADRATURE MODULATION APPARATUS 有权
标题翻译：检测方法的现蕾调制器TRÄGERLECKEINSTELLPUNKTS以几何分析/计算程序，和平方TRÄGERLECKEINSTELLVERFAHREN调制器件
公开(公告)号：EP1478145A1
公开(公告)日：2004-11-17
申请号：EP03706969.7
申请日：2003-02-19
申请人： Anritsu Corporation
发明人： KANAZAWA, Norio , TSUCHIYA, Masahiro
IPC分类号： H04L27/00 , H03C1/52
CPC分类号： H03C3/406 , H03C3/40 , H04L27/364 , H04L2027/0016
摘要： The first, second, and third pairs of DC voltages which set a modulated signal to a predetermined reference level while the levels of I and Q signals supplied to a quadrature modulator are set at "0" are sequentially obtained. On the basis of the first, second, and third pairs of DC voltages, at least three measurement points based on a combination of pairs of DC voltages which set the level of the modulated signal to the predetermined reference level are decided. The coordinates of the center of a virtual circle having the three measurement points positioned on its circumference are automatically calculated by a geometric analytical computation. Adjustment voltages to be added to the I and Q signals so as to cancel out a carrier leak contained in the modulated signal are obtained from the coordinates of the center.
摘要翻译： DC电压的第一，第二和第三对而I和Q信号，以提供一正交调制器的电平被设定为“0”，确定调制的信号以一预定参考电平的依次取得。在第一，第二和第三对DC电压的基础上，基于DC电压的对哪组调制的信号到预定的参考电平的电平被确定的组合中的至少三个测量点。具有位于其圆周上的三个测量点的假想圆的中心的坐标是通过几何分析计算自动计算。调整电压被添加到I和Q信号，以便抵消包含在调制信号从中心的坐标而获得的载波泄漏。

100. 发明公开

EP0265218A2 Vector modulators and calibration thereof 失效
标题翻译： Vektor-Modulatoren und deren Kalibrierung。
公开(公告)号：EP0265218A2
公开(公告)日：1988-04-27
申请号：EP87309238.1
申请日：1987-10-20
申请人： Hewlett-Packard Company
发明人： Edwards, Allen P. , Gildea, David R. , Lau, Chung Yiu
IPC分类号： H03C1/52 , H04L27/20 , H03C1/40 , G01R35/00
CPC分类号： H04L27/364 , G01R35/005 , H04L2027/0016 , H04L2027/0018
摘要： Calibration of a vector modulator is done using a scalar detector (220) to measure the amplitude of the RF output signal, phase shifters (221, 223) to adjust the relative phases of the I and Q components of the RF carrier, and variable attentuators (225, 227) in the I and Q modulation signal input lines to adjust the relative amplitude of the modulation signals. DC signal sources provide reference signals for the I and Q modulation inputs, carrier leak compensation signals, and calibration signals for balancing the amplitude of the I and Q modulation signals. An iterative four step calibration process is followed until no change in the results is observed. The quadrature phase error is minimized by adjusting the phase shifters (221, 223). The carrier leakage is minimized by adjusting the carrier leak compensation sources (229, 231) to minimize RF output with the modulation inputs grounded (247, 247). The amplitudes of the I and Q modulation signals are balanced by adjusting the attenuators (225, 227) until the output amplitudes are equal. Finally, the quadrature calibration signal sources (235, 237) are adjusted until the output amplitudes they produce are balanced.
摘要翻译：使用标量检测器（220）来测量矢量调制器的校准，以测量RF输出信号的幅度，移相器（221,223）来调整RF载波的I和Q分量的相对相位，以及可变参考器（225,227）在I和Q调制信号输入线中调整调制信号的相对幅度。直流信号源为I和Q调制输入提供参考信号，载波泄漏补偿信号和用于平衡I和Q调制信号振幅的校准信号。遵循迭代的四步校准过程，直到观察不到结果的变化。通过调整移相器（221,223）使正交相位误差最小化。通过调整载波泄漏补偿源（229,231）使调制输入接地（247,247）的RF输出最小化，使载波泄漏最小化。通过调节衰减器（225,227）直到输出幅度相等来平衡I和Q调制信号的幅度。最后，调整正交校准信号源（235,237），直到它们产生的输出振幅平衡。

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