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1. 发明申请

WO00039918A1 ANALOGUE MODULATION METHOD AND MONOLITHIC INTEGRATED CIRCUIT WITH MIXER STAGE COMPRISING NON-POLARISED FIELD-EFFECT TRANSISTORS 审中-公开
标题翻译：具有非极化场效应晶体管的混频器的模拟调制方法和单片集成电路
公开(公告)号：WO00039918A1
公开(公告)日：2000-07-06
申请号：PCT/FR1999/003276
申请日：1999-12-23
IPC分类号： H03C1/54 , H03C7/02
CPC分类号： H03C1/547 , H03C7/025
摘要： The invention concerns a method and a circuit for analogue phase and/or amplitude modulation of a high frequency carrier signal with an Î or Q low frequency analogue modulation signal, comprising at a least mixer stage (5, 6) including two field-effect transistor, called modulation transistors (21, 22), mounted with the sources (23, 24) jointly connected to ground, and whereof the drains (25, 26) are not polarised. The method consists in applying on the gates (30, 31) of the modulation transistors (21, 22) I or Q modulating analog electric signals, I or Q at low frequency matching each other, whereof the amplitude is less than a maximum value Amax beyond which the power of the signal modulated in output is no longer proportional to the power of the modulating signal.
摘要翻译：本发明涉及一种用于具有β或Q低频模拟调制信号的高频载波信号的模拟相位和/或幅度调制的方法和电路，其包括至少混合级（5,6），包括两个场效应晶体管，称为调制晶体管（21,22），其安装有共同连接到地的源极（23,24），并且其中的漏极（25,26）不被极化。该方法包括在调制晶体管（21,22）I或Q的栅极（30,31）上施加低频调制模拟电信号，即低频或低电平Q 彼此匹配，其幅度小于最大值Amax，超过该最大值Amax，在输出中调制的信号的功率不再与调制信号的功率成比例。

2. 发明申请

WO2010045720A1 METHODS AND SYSTEMS FOR PROGRAMMABLE DIGITAL UP-CONVERSION 审中-公开
标题翻译：可编程数字上转换的方法和系统
公开(公告)号：WO2010045720A1
公开(公告)日：2010-04-29
申请号：PCT/CA2009/001495
申请日：2009-10-20
申请人： NORTEL NETWORKS LIMITED , MORRIS, Bradley John , FULLER, Arthur Thomas Gerald
发明人： MORRIS, Bradley John , FULLER, Arthur Thomas Gerald
IPC分类号： H04L27/00 , H03H17/02 , H03M1/66
CPC分类号： H03D7/161 , H03C1/547
摘要： Methods and apparatus are described herein that make use of complex tuning, the inherently repetitive nature of sampled signals, and programmable digital filtering to create a flexible digital up-conversion system that utilizes a digital-to-analog converter (DAC) with a fixed effective sample rate while still being adapted for tunability over a wide frequency range. With a knowledge of the fixed effective sample rate of the DAC and a desired frequency of up-conversion and combining complex tuning at baseband and up-sampling by a factor of N with a programmable passband filter configured to select one of a plurality of signal images resulting from the up-sampling, it is possible to translate a baseband input signal to a wide range of frequencies above or below Fs, without changing the sampling rate of the fixed rate DAC used in the up-conversion process.
摘要翻译：本文描述了使用复杂调谐，采样信号的固有重复性质和可编程数字滤波来创建灵活的数字上变频系统的方法和装置，其利用具有固定有效的数模转换器（DAC）采样率仍然适应于宽频率范围内的可调谐性。通过了解DAC的固定有效采样率和期望的上变频频率，并将基带上的复杂调谐和N倍的上采样与可配置为选择多个信号图像之一的可编程通带滤波器由于上采样，可以将基带输入信号转换到高于或低于Fs的宽频率范围，而不会改变上转换过程中使用的固定速率DAC的采样率。

3. 发明申请

WO2008110833A1 RFID TAGS 审中-公开
标题翻译： RFID标签
公开(公告)号：WO2008110833A1
公开(公告)日：2008-09-18
申请号：PCT/GB2008/050109
申请日：2008-02-20
申请人： CAMBRIDGE RESONANT TECHNOLOGIES LTD , HILL, Nicholas Patrick Roland
发明人： HILL, Nicholas Patrick Roland
IPC分类号： G06K19/07
CPC分类号： G06K7/10366 , G06K7/10316 , G06K19/0707 , G06K19/0712 , G06K19/0723 , G06K19/0726 , H03C1/547
摘要： We describe RFID tags that incorporate a nonlinear resonator that self-adapts to the driving frequency of a reader. More particularly we describe an RF tag for sending data to a tag reader by modulating energy drawn from an RF field of said tag reader, the tag comprising: an antenna; a resonant circuit coupled to said antenna to resonate at a frequency of said RF field; a local power store to store power extracted from said RF field; a modulation system to modulate one or both of the resonance amplitude and a relative phase of a signal in said resonant circuitwithrespect to said RF field; and a feedback circuit coupled to said resonant circuit and to said local power store to control one or both of said resonance amplitude and said relative phase to control transients in said resonance amplitude caused by said modulation.
摘要翻译：我们描述了RFID标签，其包含自适应读取器的驱动频率的非线性谐振器。更具体地，我们描述一种用于通过调制从所述标签读取器的RF场抽取的能量向标签读取器发送数据的RF标签，所述标签包括：天线; 耦合到所述天线的谐振电路以所述RF场的频率谐振; 用于存储从所述RF场提取的功率的本地电力存储器; 调制系统，用于调制所述谐振电路中的所述谐振振幅和相对于所述RF场的信号的相对相位中的一个或两个; 以及耦合到所述谐振电路和所述局部功率存储器的反馈电路，以控制所述谐振幅度和所述相对相位中的一个或两个来控制由所述调制引起的所述谐振幅度的瞬变。

4. 发明申请

WO2004084514A1 QUADRATURE MODULATOR WHICH EMPLOYS FOUR 90-DEGREES-SHIFTED CARRIERS 审中-公开
标题翻译：使用四个90度转换载体的四通道调制器
公开(公告)号：WO2004084514A1
公开(公告)日：2004-09-30
申请号：PCT/US2004/008282
申请日：2004-03-17
申请人： QUALCOMM INCORPORATED , BALLANTYNE, Gary, J.
发明人： BALLANTYNE, Gary, J.
IPC分类号： H04L27/36
CPC分类号： H03C1/547 , H03F3/2176 , H04L27/362
摘要： A quadra-polar modulator that is simple to implement and also provides good noise performance. The quadra-polar modulator includes four amplitude modulators and a combiner. Each amplitude modulator modulates a respective carrier signal with a respective input signal to provide a respective output signal. The combiner then combines the four output signals from the four amplitude modulators to provide a modulated signal. Each amplitude modulator may be implemented with a switching amplifier, such as a supply modulated class E amplifier. Two input signals are obtained by summing separately an inphase (I) modulating signal and an inverted I modulating signal with an offset value. The other two input signals are obtained by summing separately a quadrature (Q) modulating signal and an inverted Q modulating signal with the offset value. The offset value can be selected based on the expected magnitude of the modulating signals. The four carrier signals are in quadrature to each other.
摘要翻译：一种四极调制器，易于实现，并提供良好的噪声性能。四极调制器包括四个幅度调制器和一个组合器。每个幅度调制器用相应的输入信号调制相应的载波信号以提供相应的输出信号。然后，组合器组合来自四个幅度调制器的四个输出信号以提供调制信号。每个幅度调制器可以用开关放大器来实现，例如电源调制的E类放大器。通过分别对同相（I）调制信号和具有偏移值的反相I调制信号进行求和来获得两个输入信号。通过对正交（Q）调制信号和具有偏移值的反相Q调制信号进行相加来获得另外两个输入信号。可以基于调制信号的预期幅度来选择偏移值。四个载波信号彼此正交。

5. 发明申请

WO02037667A1 A DIRECT DIGITAL AMPLITUDE MODULATOR 审中-公开
标题翻译：直接数字振幅调制器
公开(公告)号：WO02037667A1
公开(公告)日：2002-05-10
申请号：PCT/SE2001/002411
申请日：2001-11-01
IPC分类号： H03C1/36 , H03C1/54 , H04L27/36 , H03C1/00
CPC分类号： H03C1/547 , H03C1/36 , H04L27/36
摘要： This invention provides various embodiments of a direct digital amplitude modulator (DDAM) for modulating radio frequency (RF) or intermediate frequency (IF) or baseband signal with the invented interpolation technique. The interpolation technique greatly reduces the amplitudes of alias signals without using an analog filter. The invention therefore is significant for various communication transmitters to achieve simple structure, good linearity and high power efficiency.
摘要翻译：本发明提供用于通过本发明的内插技术来调制射频（RF）或中频（IF）或基带信号的直接数字幅度调制器（DDAM）的各种实施例。插值技术大大降低了别名信号的幅度，而不使用模拟滤波器。因此，本发明对于各种通信发射机来说是很重要的，以实现简单的结构，良好的线性度和高功率效率。

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