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1. 发明授权

US07227482B2 Complex band-pass filter for use in digital radio receiver and complex band-pass Δ-Σ AD modulator using the same 失效
标题翻译：用于数字无线电接收机的复合带通滤波器和使用其的复合带通Delta-Sigma AD调制器
公开(公告)号：US07227482B2
公开(公告)日：2007-06-05
申请号：US11408941
申请日：2006-04-24
申请人： Hao San , Haruo Kobayashi , Hiroki Wada , Akira Hayakawa , Hiroyuki Hagiwara , Yoshitaka Jingu , Kazuyuki Kobayashi , Toshiro Tsukada
发明人： Hao San , Haruo Kobayashi , Hiroki Wada , Akira Hayakawa , Hiroyuki Hagiwara , Yoshitaka Jingu , Kazuyuki Kobayashi , Toshiro Tsukada
IPC分类号： H03M3/00
CPC分类号： H03M3/34 , H03M3/40 , H03M3/402 , H03M3/424 , H03M3/454
摘要： In a first-order complex band-pass filter, multiplexers are alternately switched over between time intervals of phases A and B, where the multiplexers includes two multiplexers provided at input and output stages, and a multiplexer provided in a feedback circuit of each of first-order filters and being switching over whether to invert a sign of a feedback signal. Then in a circuit part sandwiched between the multiplexers, a processing performed by an I circuit part and a processing performed by a Q circuit part are alternately switched over so that a sign of a signal inputted to an adder is inverted.
摘要翻译：在一阶复数带通滤波器中，多路复用器在相位A和B的时间间隔之间交替切换，其中多路复用器包括在输入和输出级提供的两个多路复用器，以及多路复用器，其设置在第一 - 顺序滤波器并切换是否反转反馈信号的符号。然后在夹在多路复用器之间的电路部分中，交替地切换由I电路部分执行的处理和由Q电路部分执行的处理，使得输入到加法器的信号的符号反转。

2. 发明申请

US20060284751A1 Complex band-pass filter for use in digital radio receiver and complex band-pass delta-sigma AD modulator using the same 失效
标题翻译：用于数字无线电接收机的复合带通滤波器和使用该带通滤波器的复数带通Δ-ΔAD调制器
公开(公告)号：US20060284751A1
公开(公告)日：2006-12-21
申请号：US11408941
申请日：2006-04-24
申请人： Hao San , Haruo Kobayashi , Hiroki Wada , Akira Hayakawa , Hiroyuki Hagiwara , Yoshitaka Jingu , Kazuyuki Kobayashi , Toshiro Tsukada
发明人： Hao San , Haruo Kobayashi , Hiroki Wada , Akira Hayakawa , Hiroyuki Hagiwara , Yoshitaka Jingu , Kazuyuki Kobayashi , Toshiro Tsukada
IPC分类号： H03M3/00
CPC分类号： H03M3/34 , H03M3/40 , H03M3/402 , H03M3/424 , H03M3/454
摘要： In a first-order complex band-pass filter, multiplexers are alternately switched over between time intervals of phases A and B, where the multiplexers includes two multiplexers provided at input and output stages, and a multiplexer provided in a feedback circuit of each of first-order filters and being switching over whether to invert a sign of a feedback signal. Then in a circuit part sandwiched between the multiplexers, a processing performed by an I circuit part and a processing performed by a Q circuit part are alternately switched over so that a sign of a signal inputted to an adder is inverted.
摘要翻译：在一阶复数带通滤波器中，多路复用器在相位A和B的时间间隔之间交替切换，其中多路复用器包括在输入和输出级提供的两个多路复用器，以及多路复用器，其设置在第一 - 顺序滤波器并切换是否反转反馈信号的符号。然后在夹在多路复用器之间的电路部分中，交替地切换由I电路部分执行的处理和由Q电路部分执行的处理，使得输入到加法器的信号的符号反转。

3. 发明申请

US20080169953A1 SEMICONDUCTOR INTEGRATED CIRCUIT 有权
标题翻译：半导体集成电路
公开(公告)号：US20080169953A1
公开(公告)日：2008-07-17
申请号：US12013855
申请日：2008-01-14
申请人： Takaya YAMAMOTO , Tatsuji Matsuura , Masumi Kasahara , Hideo Nakane , Junya Kudo , Yoshitaka Jingu
发明人： Takaya YAMAMOTO , Tatsuji Matsuura , Masumi Kasahara , Hideo Nakane , Junya Kudo , Yoshitaka Jingu
IPC分类号： H03M1/12 , H04L27/06
CPC分类号： H03M3/406 , H03M3/43 , H03M3/454
摘要： The A/D converter converting an analog input signal into a digital output signal is constructed with a band pass ΔΣ modulator. The band pass ΔΣ modulator includes: a resonator showing a band-pass characteristic at a predetermined frequency and an attenuation characteristic at another frequency; a quantizer; and a local D/A converter. A signal of difference between the analog input signal and a local analog signal of the local D/A converter is supplied to the resonator. The A/D converter further includes an adder for supplying the analog input signal to an input of the quantizer. In addition, signal transmission circuits for reducing the influence of spike noise of the quantizer on the input to the resonator are connected between an input of the adder and an input of resonator selectively. The A/D converter constructed with the band pass ΔΣ modulator is improved in S/N ratio.
摘要翻译：将模拟输入信号转换为数字输出信号的A / D转换器由带通DeltaSigma调制器构成。带通DeltaSigma调制器包括：表示预定频率的带通特性和另一频率的衰减特性的谐振器; 量化器和本地D / A转换器。模拟输入信号和本地D / A转换器的本地模拟信号之间的信号被提供给谐振器。 A / D转换器还包括用于将模拟输入信号提供给量化器的输入的加法器。此外，用于减小量化器的尖峰噪声对谐振器的输入的影响的信号传输电路被选择性连接在加法器的输入和谐振器的输入之间。用带通DeltaSigma调制器构成的A / D转换器的S / N比提高了。

4. 发明授权

US07583215B2 Semiconductor integrated circuit 有权
标题翻译：半导体集成电路
公开(公告)号：US07583215B2
公开(公告)日：2009-09-01
申请号：US12013855
申请日：2008-01-14
申请人： Takaya Yamamoto , Tatsuji Matsuura , Masumi Kasahara , Hideo Nakane , Junya Kudo , Yoshitaka Jingu
发明人： Takaya Yamamoto , Tatsuji Matsuura , Masumi Kasahara , Hideo Nakane , Junya Kudo , Yoshitaka Jingu
IPC分类号： H03M3/00
CPC分类号： H03M3/406 , H03M3/43 , H03M3/454
摘要： The A/D converter converting an analog input signal into a digital output signal is constructed with a band pass ΔΣ modulator. The band pass ΔΣ modulator includes: a resonator showing a band-pass characteristic at a predetermined frequency and an attenuation characteristic at another frequency; a quantizer; and a local D/A converter. A signal of difference between the analog input signal and a local analog signal of the local D/A converter is supplied to the resonator. The A/D converter further includes an adder for supplying the analog input signal to an input of the quantizer. In addition, signal transmission circuits for reducing the influence of spike noise of the quantizer on the input to the resonator are connected between an input of the adder and an input of resonator selectively. The A/D converter constructed with the band pass ΔΣ modulator is improved in S/N ratio.
摘要翻译：将模拟输入信号转换为数字输出信号的A / D转换器由带通DeltaSigma调制器构成。带通DeltaSigma调制器包括：表示预定频率的带通特性的谐振器和另一频率处的衰减特性; 量化器和本地D / A转换器。模拟输入信号和本地D / A转换器的本地模拟信号之间的信号被提供给谐振器。 A / D转换器还包括用于将模拟输入信号提供给量化器的输入的加法器。此外，用于减小量化器的尖峰噪声对谐振器的输入的影响的信号传输电路被选择性连接在加法器的输入和谐振器的输入之间。用带通DeltaSigma调制器构成的A / D转换器的S / N比提高了。

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