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1. 发明授权

US07187909B2 Current mode transmitter 有权
标题翻译：电流模式变送器
公开(公告)号：US07187909B2
公开(公告)日：2007-03-06
申请号：US10811704
申请日：2004-03-29
申请人： Heng-Chih Lin , Ranjit Gharpurey , Paul A. Fontaine
发明人： Heng-Chih Lin , Ranjit Gharpurey , Paul A. Fontaine
IPC分类号： H04B1/02 , H04B17/00
CPC分类号： H03F3/24 , H03F3/345 , H04B1/04
摘要： A current-domain transmitter is configured to receive an input signal and provide a transmitted signal. The transmitter has a plurality of elements, operatively arranged between the input signal and the transmitted signal and configured to represent the input signal with respective electric currents whose respective current magnitudes are each substantially proportional to the input signal. The elements may include a current-steering digital-to-analog converter (DAC), a current mode filter (such as an LPF), a current mode mixer, and/or a current mode amplifier.
摘要翻译：当前域发射机被配置为接收输入信号并提供发射信号。发射机具有多个元件，可操作地布置在输入信号和发射信号之间，并被配置为用相应的电流表示输入信号，其各自的电流幅度大致与输入信号成比例。元件可以包括电流转向数模转换器（DAC），电流模式滤波器（例如LPF），电流模式混频器和/或电流模式放大器。

2. 发明授权

US07187917B2 Current interpolation in multi-phase local oscillator for use with harmonic rejection mixer 有权
标题翻译：用于谐波抑制混频器的多相本机振荡器中的电流插值
公开(公告)号：US07187917B2
公开(公告)日：2007-03-06
申请号：US10811584
申请日：2004-03-29
申请人： Heng-Chih Lin , Ranjit Gharpurey
发明人： Heng-Chih Lin , Ranjit Gharpurey
IPC分类号： H04B1/26
CPC分类号： H03B27/00 , H03D7/1441 , H03D7/1458 , H03D7/1475 , H03D7/1483 , H03D7/165 , H03D2200/0033 , H03D2200/0086
摘要： A circuit provides a reduced harmonic content output signal OUTA and/or OUTB that is modulated according to an input signal 231. The circuit has an oscillator circuit 210 and a harmonic rejection mixer (HRM) 230. The oscillator circuit 210 includes at least one “circuit portion” (FIG. 2A) configured to receive first and second orthogonal oscillator input signals (two of I, I−, Q, Q−) having respective first and second phases, and to provide an arbitrarily large number of oscillator output signals (φM) having respective mutually distinct phases that are interpolated between the first and second phases. Harmonic rejection mixer 230 is configured to use the input signal to modulate a combination of the oscillator output signals, the oscillator output signals being respectively weighted so as to provide an emulated sinusoidal signal constituting the reduced harmonic content output signal.
摘要翻译：电路提供根据输入信号231调制的减少的谐波含量输出信号OUTA和/或OUTB。电路具有振荡电路210和谐波抑制混频器（HRM）230。振荡器电路210包括至少一个“电路部分”（图2A），其被配置为接收具有相应的第一和第二相位的第一和第二正交振荡器输入信号（I，I，I，Q-中的两个），并且提供任意大量的振荡器输出信号（phiM），其具有在第一和第二相之间插值的各自相互不同的相位。谐波抑制混频器230被配置为使用输入信号来调制振荡器输出信号的组合，振荡器输出信号被分别加权，以便提供构成还原谐波内容输出信号的仿真正弦信号。

3. 发明申请

US20050212599A1 Adaptive amplifier output common mode voltage adjustment 有权
标题翻译：自适应放大器输出共模电压调节
公开(公告)号：US20050212599A1
公开(公告)日：2005-09-29
申请号：US10806962
申请日：2004-03-23
申请人： Heng-Chih Lin , Ranjit Gharpurey
发明人： Heng-Chih Lin , Ranjit Gharpurey
IPC分类号： H03F3/45
CPC分类号： H03F3/45659 , H03F2200/453
摘要： The circuit with adaptive amplifier output common mode voltage adjustment includes: a differential pre-amplifier; a re-generated comparator having a differential input coupled to a differential output of the pre-amplifier; and a replica comparator coupled to a common mode node of the pre-amplifier for adjusting a common mode of the pre-amplifier. The replica comparator provides a trip-point reference to set the output common mode of the pre-amplifier. This sets the output common mode of the pre-amplifier to the most sensitive region of the re-generated comparator.
摘要翻译：具有自适应放大器输出共模电压调节的电路包括：差分前置放大器; 重新产生的比较器，其具有耦合到前置放大器的差分输出的差分输入; 以及耦合到前置放大器的共模节点的复制比较器，用于调整前置放大器的共模。复制比较器提供了一个跳变点参考，用于设置前置放大器的输出共模。这将前置放大器的输出共模设置为重新产生的比较器的最敏感区域。

4. 发明授权

US07440491B2 Ultra-wideband communications system devices 有权
标题翻译：超宽带通信系统设备
公开(公告)号：US07440491B2
公开(公告)日：2008-10-21
申请号：US10759480
申请日：2004-01-16
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak , Abdellatif Bellaouar , Paul H. Fontaine , Michel Frechette , Ranjit Gharpurey , Heng-Chih Lin
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak , Abdellatif Bellaouar , Paul H. Fontaine , Michel Frechette , Ranjit Gharpurey , Heng-Chih Lin
IPC分类号： H04B1/00
CPC分类号： H04B1/719 , H04B1/71635 , H04B1/71637
摘要： System for ultra-wideband communications providing high data rates over an extended operating range in the presence of interferers. A preferred embodiment comprises an ultra-wideband (UWB) device that makes use of a portion of the UWB frequency range to help provide good performance in the presence of interferers. Additionally, since only a portion of the UWB frequency range is used, multiple devices can simultaneously transmit and receive by using different portions of the UWB frequency range.
摘要翻译：用于在存在干扰源的情况下在扩展工作范围内提供高数据速率的超宽带通信系统。优选实施例包括利用UWB频率范围的一部分来帮助在存在干扰源的情况下提供良好性能的超宽带（UWB）设备。此外，由于仅使用UWB频率范围的一部分，所以多个设备可以通过使用UWB频率范围的不同部分同时发送和接收。

5. 发明授权

US06975170B2 Adaptive amplifier output common mode voltage adjustment 有权
公开(公告)号：US06975170B2
公开(公告)日：2005-12-13
申请号：US10806962
申请日：2004-03-23
申请人： Heng-Chih Lin , Ranjit Gharpurey
发明人： Heng-Chih Lin , Ranjit Gharpurey
IPC分类号： H03F3/45
CPC分类号： H03F3/45659 , H03F2200/453
摘要： The circuit with adaptive amplifier output common mode voltage adjustment includes: a differential pre-amplifier; a re-generated comparator having a differential input coupled to a differential output of the pre-amplifier; and a replica comparator coupled to a common mode node of the pre-amplifier for adjusting a common mode of the pre-amplifier. The replica comparator provides a trip-point reference to set the output common mode of the pre-amplifier. This sets the output common mode of the pre-amplifier to the most sensitive region of the re-generated comparator.

6. 发明申请

US20050280462A1 INVERSE FUNCTION METHOD FOR SEMICONDUCTOR MIXER LINEARITY ENHANCEMENT 有权
标题翻译：用于半导体混合器线性增强的反相函数方法
公开(公告)号：US20050280462A1
公开(公告)日：2005-12-22
申请号：US10869680
申请日：2004-06-16
申请人： Heng-Chih Lin , Chien-Chung Chen , Ranjit Gharpurey
发明人： Heng-Chih Lin , Chien-Chung Chen , Ranjit Gharpurey
IPC分类号： H03D7/14 , H03G3/10
CPC分类号： H03D7/1441 , H03D7/1408 , H03D7/1458 , H03D7/1491
摘要： The mixer circuit includes a differential rf input driver; a differential local oscillator input circuit coupled to the differential rf input driver; a non-linear load coupled to the differential local oscillator input circuit wherein the non-linear load compensates for non-linearity of the differential rf input driver. The non-linear load has a V-I (voltage-current) transfer function the inverse of the input driver. This improves the mixer linearity without sacrificing the Gain or Noise Figure.
摘要翻译：混频器电路包括差分rf输入驱动器; 耦合到差分rf输入驱动器的差分本地振荡器输入电路; 耦合到差分本地振荡器输入电路的非线性负载，其中非线性负载补偿差分rf输入驱动器的非线性。非线性负载具有V-I（电压 - 电流）传递函数，与输入驱动器相反。这可以提高混频器的线性度，而不会牺牲增益或噪声系数。

7. 发明申请

US20050215223A1 Current interpolation in multi-phase local oscillator for use with harmonic rejection mixer 有权
标题翻译：用于谐波抑制混频器的多相本机振荡器中的电流插值
公开(公告)号：US20050215223A1
公开(公告)日：2005-09-29
申请号：US10811584
申请日：2004-03-29
申请人： Heng-Chih Lin , Ranjit Gharpurey
发明人： Heng-Chih Lin , Ranjit Gharpurey
IPC分类号： H03B27/00 , H03D7/14 , H04B1/10
CPC分类号： H03B27/00 , H03D7/1441 , H03D7/1458 , H03D7/1475 , H03D7/1483 , H03D7/165 , H03D2200/0033 , H03D2200/0086
摘要： A circuit provides a reduced harmonic content output signal OUTA and/or OUTB that is modulated according to an input signal 231. The circuit has an oscillator circuit 210 and a harmonic rejection mixer (HRM) 230. The oscillator circuit 210 includes at least one “circuit portion” (FIG. 2A) configured to receive first and second orthogonal oscillator input signals (two of I, I-, Q, Q-) having respective first and second phases, and to provide an arbitrarily large number of oscillator output signals (φM) having respective mutually distinct phases that are interpolated between the first and second phases. Harmonic rejection mixer 230 is configured to use the input signal to modulate a combination of the oscillator output signals, the oscillator output signals being respectively weighted so as to provide an emulated sinusoidal signal constituting the reduced harmonic content output signal.
摘要翻译：电路提供根据输入信号231调制的减少的谐波含量输出信号OUTA和/或OUTB。电路具有振荡器电路210和谐波抑制混频器（HRM）230.振荡器电路210包括至少一个“ 电路部分“（图2A），被配置为接收具有相应的第一和第二相位的第一和第二正交振荡器输入信号（I，I，I，Q-中的两个），并且提供任意大量的振荡器输出信号（phiM）具有在第一和第二相之间插值的各自相互不同的相位。谐波抑制混频器230被配置为使用输入信号来调制振荡器输出信号的组合，振荡器输出信号被分别加权，以便提供构成还原谐波内容输出信号的仿真正弦信号。

8. 发明申请

US20050213672A1 Current mode transmitter 有权
标题翻译：电流模式变送器
公开(公告)号：US20050213672A1
公开(公告)日：2005-09-29
申请号：US10811704
申请日：2004-03-29
申请人： Heng-Chih Lin , Ranjit Gharpurey , Paul Fontaine
发明人： Heng-Chih Lin , Ranjit Gharpurey , Paul Fontaine
IPC分类号： H03F3/24 , H03F3/345 , H04B1/04 , H04B3/00
CPC分类号： H03F3/24 , H03F3/345 , H04B1/04
摘要： A current-domain transmitter is configured to receive an input signal and provide a transmitted signal. The transmitter has a plurality of elements, operatively arranged between the input signal and the transmitted signal and configured to represent the input signal with respective electric currents whose respective current magnitudes are each substantially proportional to the input signal. The elements may include a current-steering digital-to-analog converter (DAC), a current mode filter (such as an LPF), a current mode mixer, and/or a current mode amplifier.
摘要翻译：当前域发射机被配置为接收输入信号并提供发射信号。发射机具有多个元件，可操作地布置在输入信号和发射信号之间，并被配置为用相应的电流表示输入信号，其各自的电流幅度大致与输入信号成比例。元件可以包括电流转向数模转换器（DAC），电流模式滤波器（例如LPF），电流模式混频器和/或电流模式放大器。

9. 发明授权

US07756002B2 Time-frequency interleaved orthogonal frequency division multiplexing ultra wide band physical layer 有权
标题翻译：时频交织正交频分复用超宽带物理层
公开(公告)号：US07756002B2
公开(公告)日：2010-07-13
申请号：US10688169
申请日：2003-10-18
申请人： Anuj Batra , Jaiganesh Balakrishnan , Anand G. Dabak , Ranjit Gharpurey , Paul H. Fontaine , Heng-Chih Lin
发明人： Anuj Batra , Jaiganesh Balakrishnan , Anand G. Dabak , Ranjit Gharpurey , Paul H. Fontaine , Heng-Chih Lin
IPC分类号： H04J11/00
CPC分类号： H04B1/7163 , H04L1/0041 , H04L1/0069 , H04L1/0071 , H04L1/0075 , H04L27/2602
摘要： A PHY entity for a UWB system utilizes the unlicensed 3.1-10.6 GHZ UWB band, as regulated in the United States by the Code of Federal Regulation, Title 47, Section 15. The UWB system provides a wireless pico area network (PAN) with data payload communication capabilities of 55, 80, 110, 160, 200, 320 and 480 Mb/s. The UWB system employs orthogonal frequency division multiplexing (OFDM) and uses a total of 122 sub-carriers that are modulated using quadrature phase shift keying (QPSK). Forward error correction coding (convolutional coding) is used with a coding rate of 11/32, 1/2, 5/8 and 3/4.
摘要翻译： UWB系统的PHY实体利用美国由“联邦法规”第47章第15节规定的未经授权的3.1-10.6 GHZ UWB频带。UWB系统提供无线微微区域网络（PAN）与数据有效载荷通信能力为55,80,110,160,200,320和480 Mb / s。 UWB系统采用正交频分复用（OFDM），并且使用使用正交相移键控（QPSK）调制的总共122个子载波。前向纠错编码（卷积编码）的编码率为11/32，1/2，5/8和3/4。

10. 发明授权

US06982588B1 Inverse function method for semiconductor mixer linearity enhancement 有权
标题翻译：半导体混合器线性增强的逆函数法
公开(公告)号：US06982588B1
公开(公告)日：2006-01-03
申请号：US10869680
申请日：2004-06-16
申请人： Heng-Chih Lin , Chien-Chung Chen , Ranjit Gharpurey
发明人： Heng-Chih Lin , Chien-Chung Chen , Ranjit Gharpurey
IPC分类号： G06G7/44 , G06G7/16
CPC分类号： H03D7/1441 , H03D7/1408 , H03D7/1458 , H03D7/1491
摘要： The mixer circuit includes a differential rf input driver; a differential local oscillator input circuit coupled to the differential rf input driver; a non-linear load coupled to the differential local oscillator input circuit wherein the non-linear load compensates for non-linearity of the differential rf input driver. The non-linear load has a V-I (voltage-current) transfer function the inverse of the input driver. This improves the mixer linearity without sacrificing the Gain or Noise Figure.
摘要翻译：混频器电路包括差分rf输入驱动器; 耦合到差分rf输入驱动器的差分本地振荡器输入电路; 耦合到差分本地振荡器输入电路的非线性负载，其中非线性负载补偿差分rf输入驱动器的非线性。非线性负载具有V-I（电压 - 电流）传递函数，与输入驱动器相反。这可以提高混频器的线性度，而不会牺牲增益或噪声系数。

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