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1. 发明申请

US20180227154A1 Method and Device for Phase Modulation of a Carrier Wave and Application to the Detection of Multi-Level Phase-Encoded Digital Signals 审中-公开
公开(公告)号：US20180227154A1
公开(公告)日：2018-08-09
申请号：US15548519
申请日：2016-01-29
申请人： Commissariat A L'Engergie Atomique Et Aux Energies Alternatives
发明人： Denis Christian Glattli , Séverin Preden Roulleau
IPC分类号： H04L27/20 , H04L27/22 , H04L27/32 , H04L27/00 , H04L27/04 , H03C1/52 , H04L27/10
CPC分类号： H04L27/2017 , H03C1/52 , H04L27/0008 , H04L27/04 , H04L27/10 , H04L27/20 , H04L27/22 , H04L27/32
摘要： The method of phase modulating a carrier wave involves creating a set of signals sh(t) constituted by a carrier wave of frequency fC and of phase φ(t)=hφ0(t) that is modulated in time t in such a manner that sh(t)=cos(2πfCt+hφ0(t)), where h is an integer and where φ0(t)=2 arctan((t−t0)/w0). The modulation corresponds to a single phase pulse centered on a time t0 of characteristic duration w0 that is positive, and incrementing the phase of the signal sh(t) by the quantity h2π, in such a manner as to generate a single sideband frequency spectrum directly. The carrier wave may be of electromagnetic type or of acoustic type. The method applies in particular to transporting binary information by single sideband phase coding, to generating single sideband orthogonal signals, to detecting single sideband phase coded multiple-level digital signals, to transmitting single sideband phase coded binary signals in-phase and out-of-phase, and to single sideband combined amplitude-and-phase modulation.

2. 发明授权

US08907738B1 Suppressed carrier harmonic amplitude modulator 有权
标题翻译：抑制载波谐波振幅调制器
公开(公告)号：US08907738B1
公开(公告)日：2014-12-09
申请号：US13802665
申请日：2013-03-13
申请人： Cypress Semiconductor Corporation
发明人： Dennis R Seguine
IPC分类号： H03C1/02
CPC分类号： H03C1/52
摘要： A circuit includes a switched modulator stage combining an information signal with a square wave carrier to produce a first modulated signal; and a second modulation stage forming additional steps in the first modulated signal to produce a second modulated signal.
摘要翻译：电路包括将信息信号与方波载波组合以产生第一调制信号的开关调制器级; 以及第二调制级，在第一调制信号中形成附加步骤，以产生第二调制信号。

3. 发明授权

US07805123B2 RF transceiver using hopping frequency synthesizer 失效
标题翻译： RF收发器采用跳频合成器
公开(公告)号：US07805123B2
公开(公告)日：2010-09-28
申请号：US11737802
申请日：2007-04-20
申请人： Yoshikazu Sugiyama , Isao Ikuta , Yusaku Katsube
发明人： Yoshikazu Sugiyama , Isao Ikuta , Yusaku Katsube
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H04L27/2067 , H03C1/52 , H03C3/00 , H04B1/7136 , H04B1/71635
摘要： A technique of frequency hopping communication capable of high-speed switching of a plurality of signals having ultra-wide band 528 MHz bandwidth at high-speed and setting and switching a band center frequency and the number of bands arbitrary is provided. A radio transceiver has a frequency hopping communication function of UWB system for switching the ultra wide band signal. In the device, high-speed frequency hopping is realized by controlling an SSB mixer in a local oscillator circuit and switching the frequency of a DDS. The device sets NCO data to the DDS and switches a quadrature phase signal of an output, and switches a signal input of an input terminal of the SSB mixer by a control of a phase switching switch. One of a sum component and a difference component of a mixture of first and second quadrature phase signals is outputted from the output terminal of the SSB mixer.
摘要翻译：提供一种跳频通信技术，其能够高速切换具有超宽带528MHz带宽的多个信号，并且设置和切换频带中心频率和频带数量的跳频通信。无线电收发器具有用于切换超宽带信号的UWB系统的跳频通信功能。在设备中，通过在本地振荡器电路中控制SSB混频器并切换DDS的频率来实现高速跳频。该装置将NCO数据设置为DDS并切换输出的正交相位信号，并通过相位切换开关的控制切换SSB混频器的输入端的信号输入。从SSB混频器的输出端子输出第一和第二正交相位信号的混合的和分量和差分分量之一。

4. 发明授权

US6167241A Technique for performing amplitude modulation without cheating side-bands 失效
标题翻译：执行幅度调制而不作弊边带的技术
公开(公告)号：US6167241A
公开(公告)日：2000-12-26
申请号：US955534
申请日：1997-10-22
申请人： Barry Thornton
发明人： Barry Thornton
IPC分类号： H03C1/52 , H04B1/68 , H04L27/02 , H03C3/00
CPC分类号： H03C1/52 , H04B1/68 , H04L27/02
摘要： A technique for amplitude modulating a carrier without producing side-bands is disclosed. In a preferred embodiment, a signal carrier is directly modulated and no energy side-bands are produced. This is accomplished by amplitude quantizing the data or information to be transmitted at the carrier rate or frequency and then resetting the amplitude of the carrier during one of the two 0-crossing times for each cycle of the carrier.
摘要翻译：公开了一种用于幅频调制载波而不产生边带的技术。在优选实施例中，信号载体被直接调制，并且不产生能量边带。这是通过幅度量化要以载波速率或频率发射的数据或信息，然后在载波的每个周期的两个0交叉时间中的一个期间复位载波的振幅来实现的。

5. 发明授权

US5859876A Method and apparatus for improving AM compatible digital broadcast analog fidelity 失效
标题翻译：用于改善AM兼容数字广播模拟保真度的方法和装置
公开(公告)号：US5859876A
公开(公告)日：1999-01-12
申请号：US671252
申请日：1996-06-27
申请人： Mark J. Dapper , Michael J. Geile , Barry Walter Carlin
发明人： Mark J. Dapper , Michael J. Geile , Barry Walter Carlin
IPC分类号： H03C1/52 , H04H20/30 , H04H20/36 , H04L27/04 , H03C1/00 , H04L23/02 , H04N7/24
CPC分类号： H03C1/52 , H04H20/36 , H04H20/30 , H04H2201/186
摘要： A digital signal transmission system is provided which minimizes the AM signal envelope distortion caused by multiple digitally modulated carriers in the same band as the AM signal. The system transmits an amplitude modulated signal. Digital carriers for the digital signal are placed both above and below the frequency of the analog AM carrier. Certain digital carriers that are above the frequency of the analog AM carrier have an associated digital carrier that is at an equal frequency offset below the analog AM carrier. The data and modulation placed on the upper digital carrier and its counterpart are such that the signal resulting from their addition has no component that is in-phase with the analog AM carrier. The signal envelope is predistorted to counteract the distortion added by the digital carriers.
摘要翻译：提供一种数字信号传输系统，其最小化由与AM信号相同的频带中的多个数字调制载波引起的AM信号包络失真。系统发送振幅调制信号。用于数字信号的数字载波被放置在模拟AM载波的频率之上和之下。高于模拟AM载波频率的某些数字载波具有与模拟AM载波相同频率偏移的相关联的数字载波。放置在上数字载波及其对应物上的数据和调制使得由它们的相加产生的信号没有与模拟AM载波同相的分量。信号包络是预失真的，以抵消由数字载体添加的失真。

6. 发明授权

US5644260A RC/CR automatic quadrature network 失效
标题翻译： RC / CR自动正交网络
公开(公告)号：US5644260A
公开(公告)日：1997-07-01
申请号：US542745
申请日：1995-10-13
申请人： Marcus K. DaSilva , Andrew M. Teetzel
发明人： Marcus K. DaSilva , Andrew M. Teetzel
IPC分类号： H03H7/20 , H03C1/02 , H03C1/52 , H03C1/60 , H03C3/00 , H03C3/40 , H03C5/00 , H03D1/22 , H03D3/00 , H03H7/21 , H03H11/16 , H03H11/18 , H03H11/22 , H04L27/20 , H04L27/36
CPC分类号： H03C5/00 , H03C1/52 , H03C3/00 , H03C3/40 , H03H11/16 , H03H11/18 , H03H11/22 , H03C1/02 , H03C1/60 , H03C2200/0016 , H03C2200/0058 , H03D1/2245 , H03D3/007
摘要： An IQ modulator incorporates a quadrature network that is responsive to a frequency dependent control signal and that has in-phase and quadrature signals that are of equal amplitude and in exact quadrature over a wide range of applied frequencies. The quadrature network includes RC and CR phase shifters whose C's are fixed capacitors of equal value and whose R's are made equal to each other and to the capacitive reactance of the C's by the action of the frequency dependent control signal. The R's may be FET's. The frequency dependent control signal may be generated without express knowledge of the applied frequency by a servo loop that nulls out the amplitude difference between the in-phase and quadrature outputs from the quadrature network; it may also be generated from a look-up table as an express function of frequency. The frequency dependent control signal is split into separate instances that are applied to each R, and an offset may be introduced therebetween to provide extreme precision. The offset may be fixed or programmatically controlled as a function of frequency. Varactors may be used to provide variable C's in cooperation with fixed R's. The entire circuit may be fabricated as a GaAs IC for use in the frequency range of 200 MHz to 3 GHz.
摘要翻译： IQ调制器包括正交网络，该正交网络响应于频率相关的控制信号，并且具有同相和正交信号，它们在宽的施加频率范围内具有相等幅度和准确的正交。正交网络包括RC和CR相移器，其C是相等值的固定电容器，并且R通过频率相关控制信号的作用使得R相互相等并且与C的容性电抗相对应。 R的可能是FET的。频率相关控制信号可以在没有通过伺服环路的应用频率的明确知识的情况下产生，从而消除来自正交网络的同相和正交输出之间的幅度差异; 它也可以从查找表生成为频率的表达功能。频率相关控制信号被分割成分别应用于每个R的实例，并且可以在其间引入偏移以提供极高的精度。偏移可以是固定的或者作为频率的函数被编程地控制。 Varactors可以用于与固定R协作提供变量C。整个电路可以被制造为在200MHz至3GHz的频率范围内使用的GaAs IC。

7. 发明授权

US5303412A Composite direct digital synthesizer 失效
标题翻译：复合直接数字合成器
公开(公告)号：US5303412A
公开(公告)日：1994-04-12
申请号：US851481
申请日：1992-03-13
申请人： Lawrence J. Kushner
发明人： Lawrence J. Kushner
IPC分类号： G06J1/00 , H03C1/52 , H03C3/40 , H04L27/12 , H04L27/20 , H03D7/16
CPC分类号： H03C3/40 , G06J1/00 , H03C1/52 , H04L27/122 , H04L27/2092
摘要： A low-power digital frequency synthesizer combining direct digital frequency synthesis techniques with serrodyne frequency translation principles to produce a wideband frequency response with high spectral purity. A conventional direct digital synthesizer is used to generate a high-resolution analog carrier signal from a low-speed digital clock signal. The carrier signal is phase modulated by a low-resolution signal generated from a high-speed digital clock signal. The modularity signal is a higher frequency signal than the carrier signal. The phase modulation is accomplished by exact decoded attenuators. The spectral purity of the resulting high-resolution output signal is unobtainable by conventional direct digital synthesizers, while providing significant power savings.
摘要翻译：低功率数字频率合成器将直接数字频率合成技术与serrodyne频率转换原理相结合，产生具有高光谱纯度的宽带频率响应。常规的直接数字合成器用于从低速数字时钟信号产生高分辨率模拟载波信号。载波信号由从高速数字时钟信号产生的低分辨率信号进行相位调制。模块化信号是比载波信号更高的频率信号。相位调制由精确解码的衰减器完成。所得到的高分辨率输出信号的光谱纯度是传统的直接数字合成器无法获得的，同时提供了显着的功率节省。

8. 发明授权

US5012208A Quadrature modulator having compensation for local oscillator leak 失效
标题翻译：具有补偿本地振荡器泄漏的正交调制器
公开(公告)号：US5012208A
公开(公告)日：1991-04-30
申请号：US506781
申请日：1990-04-10
申请人： Jarmo Makinen , Reino Talarmo
发明人： Jarmo Makinen , Reino Talarmo
IPC分类号： H03C1/52
CPC分类号： H03C1/52
摘要： The invention relates to a quadrature modulator comprising a circuit for the compensation of a local oscillator leak signal in an output signal of the modulator, which circuit adds different compensation voltages to two modulation signals. To provide an automatic compensation of the local oscillator leak signal, the quadrature modulator of the invention comprises a regulating circuit for the regulation of the intensity of the compensation voltages irrespective of each other on the basis of the correlation between the amplitude variation in the output signal and the corresponding modulation signal.
摘要翻译：本发明涉及一种正交调制器，其包括用于补偿调制器的输出信号中的本地振荡器泄漏信号的电路，该电路向两个调制信号增加了不同的补偿电压。为了提供本地振荡器泄漏信号的自动补偿，本发明的正交调制器包括调节电路，用于根据输出信号的振幅变化之间的相关性来调节补偿电压的强度，而不管彼此如何和相应的调制信号。

9. 发明授权

US4835791A Single sideband signal generator 失效
标题翻译：单边带信号发生器
公开(公告)号：US4835791A
公开(公告)日：1989-05-30
申请号：US17125
申请日：1987-02-20
申请人： Edward D. Daoud
发明人： Edward D. Daoud
IPC分类号： H03C1/52 , H04B1/68 , H04J3/16
CPC分类号： H04J3/1688 , H03C1/52 , H04B1/68
摘要： The method and apparatus disclosed for more efficient use of the bandwidth of a communication channel includes steps of generating a single sideband signal, including inputting a digital signal into an N-tap Hilbert transform filter, modulating the output of the ((N-1)/2)th tap of the filter onto a first carrier signal, and modulating the output of the Nth tap of the filter onto a second carrier signal. The second carrier signal has the same frequency as, and is separated by 90 degrees in phase from, the first carrier signal. The modulated first and second carrier signals are combined to produce a single sideband signal. A second signal is similarly processed to produce a second single sideband signal. The two single sideband signals may be combined on a single output line. Each single sideband modulation process may be preceded by the steps of receiving an analog signal, sampling the signal to produce a digital signal, and compressing in time the digital signal to produce a compressed signal, wherein each compressed signal is input to the corresponding single sideband signal generator.
摘要翻译：公开的用于更有效地使用通信信道的带宽的方法和装置包括以下步骤：产生单个边带信号，包括将数字信号输入到N抽头希尔伯特变换滤波器中，调制（（N-1） / 2）抽头到第一载波信号，并且将滤波器的第N抽头的输出调制到第二载波信号上。第二载波信号具有与第一载波信号相同的频率，并与第一载波信号相位相差90度。调制的第一和第二载波信号被组合以产生单个边带信号。类似地处理第二信号以产生第二单边带信号。两个单边带信号可以组合在单个输出线上。每个单边带调制过程之前可以是接收模拟信号，对信号进行采样以产生数字信号的步骤，并且在时间上压缩数字信号以产生压缩信号，其中每个压缩信号被输入到相应的单边带信号发生器。

10. 发明授权

US3284711A Amplitude modulation to single or double sideband suppressed carrier converter 失效
标题翻译：单幅或双边带抑制载波转换器的幅度调制
公开(公告)号：US3284711A
公开(公告)日：1966-11-08
申请号：US27134163
申请日：1963-04-08
申请人： GEN RADIOTELEPHONE COMPANY
发明人： MESSENGER CHARLES A , MARYGOLD ALFRED E
IPC分类号： H03C1/52
CPC分类号： H03C1/52

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