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1. 发明申请

US20110115571A1 QUADRATURE MODULATOR AND SEMICONDUCTOR INTEGRATED CIRCUIT WITH IT BUILT-IN 失效
标题翻译：二次调制器和半导体集成电路与内置
公开(公告)号：US20110115571A1
公开(公告)日：2011-05-19
申请号：US12942533
申请日：2010-11-09
申请人： Takahiro NAKAMURA , Taizo YAMAWAKI , Takayasu NORIMATSU , Takao KIHARA
发明人： Takahiro NAKAMURA , Taizo YAMAWAKI , Takayasu NORIMATSU , Takao KIHARA
IPC分类号： H03C5/00
CPC分类号： H04L27/36
摘要： A quadrature modulator has first to fourth transistors, a first node, a second node, and a first output node. A non-inversion in-phase analog signal, an inversion in-phase analog signal, a non-inversion quadrature analog signal, and an inversion quadrature analog signal are supplied to input electrodes of the first to fourth transistors, respectively. Control electrodes of the first to fourth transistors respond to a non-inversion in-phase RF signal, an inversion in-phase RF signal, a non-inversion quadrature RF signal, and an inversion quadrature RF signal, respectively. Output electrodes of the first and second transistors are coupled to the first node, and output electrodes of the third and fourth transistors are coupled to the second node. A first high-pass filter is coupled between the first node and the first output node, and a second high-pass filter is coupled between the second node and the first output node.
摘要翻译：正交调制器具有第一至第四晶体管，第一节点，第二节点和第一输出节点。分别向第一至第四晶体管的输入电极提供非反相同相模拟信号，反相同相模拟信号，非反相正交模拟信号和反相正交模拟信号。第一至第四晶体管的控制电极分别响应非反相同相RF信号，反相同相RF信号，非反相正交RF信号和反相正交RF信号。第一和第二晶体管的输出电极耦合到第一节点，并且第三和第四晶体管的输出电极耦合到第二节点。第一高通滤波器耦合在第一节点和第一输出节点之间，并且第二高通滤波器耦合在第二节点和第一输出节点之间。

2. 发明申请

US20110059704A1 TRANSMITTER AND SEMICONDUCTOR INTEGRATED CIRCUIT AVAILABLE FOR IT 有权
标题翻译：发射机和半导体集成电路可供选择
公开(公告)号：US20110059704A1
公开(公告)日：2011-03-10
申请号：US12854216
申请日：2010-08-11
申请人： Takayasu NORIMATSU , Taizo YAMAWAKI , Yukinori AKAMINE , Koji MAEDA
发明人： Takayasu NORIMATSU , Taizo YAMAWAKI , Yukinori AKAMINE , Koji MAEDA
IPC分类号： H04B1/04
CPC分类号： H04B1/0483 , H03C5/00 , H04B2001/0491
摘要： The transmitter synthesizes amplitude and phase components and calibrates a delay mismatch between amplitude and phase components with high accuracy at high speed. The transmitter has: a digital-to-analog converter (DAC) and a low-pass filter (LPF) in its amplitude-signal path; and a phase modulator operable to convert up a phase component into an RF component in its phase-signal path. In an operation of delay calibration, a test input signal is supplied to a delay-calibrating unit in the amplitude-signal path, and the delay-calibrating unit provides a test input signal to DAC. Then, LPF generates a test output signal. The delay-calibrating unit detects a delay of the test output signal relative to the test input signal, calibrates an amplitude signal delay in a range from the input of the delay-calibrating unit to the output of LPF, reduces the difference between amplitude and phase signal delays of the phase modulator in the phase-signal path.
摘要翻译：发射机合成幅度和相位分量，并以高精度高速校准振幅和相位分量之间的延迟失配。发射机具有：幅度信号路径中的数模转换器（DAC）和低通滤波器（LPF）; 以及相位调制器，其可操作以将相位分量转换成其相位信号路径中的RF分量。在延迟校准的操作中，将测试输入信号提供给幅度信号路径中的延迟校准单元，并且延迟校准单元向DAC提供测试输入信号。然后，LPF产生测试输出信号。延迟校准单元检测测试输出信号相对于测试输入信号的延迟，校准从延迟校准单元的输入到LPF的输出的范围内的振幅信号延迟，减小振幅和相位之间的差异相位调制器在相位信号路径中的信号延迟。

3. 发明申请

US20090034650A1 SEMICONDUCTOR INTEGRATED CIRCUIT AND METHOD FOR OPERATING ULTRA WIDE BAND-IMPULSE RADIO-TRANSMITTER 审中-公开
标题翻译：半导体集成电路和操作超宽带波段无线电发射机的方法
公开(公告)号：US20090034650A1
公开(公告)日：2009-02-05
申请号：US12181333
申请日：2008-07-29
申请人： Takayasu NORIMATSU , Masayuki Miyazaki
发明人： Takayasu NORIMATSU , Masayuki Miyazaki
IPC分类号： H04L27/00
CPC分类号： H04L25/03834 , H04B1/71635 , H04B1/7174 , H04L25/06
摘要： Provided is a semiconductor integrated circuit, in which a transmit pulse having an impulse waveform is produced using pull-up and pull-down currents of the charge pumps of pattern-generating cells of the pattern generator. During the first calibrating operation of semiconductor integrated circuit, the variation in amplitude of the transmit pulse is detected. At least one of pull-up and pull-down currents of the charge pumps is controlled according to a first calibration control signal responsive to the result of detection of the amplitude. During the second calibrating operation, the fluctuation in DC level just after producing of a repeat pulse of the transmit pulse is also detected. Imbalance between the pull-up and pull-down currents of the charge pumps are lowered according to a second calibration control signal responsive to the result of detection of the DC level fluctuation.
摘要翻译：提供了一种半导体集成电路，其中使用图案发生器的图案生成单元的电荷泵的上拉和下拉电流产生具有脉冲波形的发射脉冲。在半导体集成电路的第一次校准操作期间，检测发射脉冲的幅度变化。响应于振幅的检测结果，根据第一校准控制信号来控制电荷泵的上拉和下拉电流中的至少一个。在第二次校准操作期间，也检测到在产生发射脉冲的重复脉冲之后的直流电平的波动。响应于DC电平波动的检测结果，根据第二校准控制信号降低电荷泵的上拉和下拉电流之间的不平衡。

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