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公开(公告)号：US20120112971A1
公开(公告)日：2012-05-10
申请号：US13380356
申请日：2010-04-28
申请人： Kazuhiko Takeyama , Kenji Yanagi , Masao Otani
发明人： Kazuhiko Takeyama , Kenji Yanagi , Masao Otani
摘要： It is an object to provide an antenna unit capable of operating in response to a plurality of types of counterpart equipment that operate at different resonance frequencies while enhancing its passing characteristic, as well as providing a portable wireless device equipped with the antenna unit. An antenna unit that performs wireless communication originating from induction coupling includes a loop antenna coiled by a conductor in a planar shape; and a metallic plate that is positioned while displaced from the loop antenna in one direction and that partially encloses a circumference of the loop antenna when viewed from the direction, wherein each of ends of the metallic plate overlaps a portion of the loop antenna when viewed from the direction.
摘要翻译： 本发明的目的是提供一种天线单元，其能够响应于以不同谐振频率工作的多种类型的配对设备而工作，同时增强其通过特性，以及提供配备有天线单元的便携式无线设备。 执行从感应耦合发起的无线通信的天线单元包括由平面形状的导体线圈化的环形天线; 以及金属板，其从所述环形天线沿一个方向位移而定位，并且当从所述方向观察时部分地包围所述环形天线的圆周，其中，当从所述方向观察时，所述金属板的每个端部与所述环形天线的一部分重叠 方向。
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公开(公告)号：US20080219372A1
公开(公告)日：2008-09-11
申请号：US12027035
申请日：2008-02-06
申请人： Kazuyuki Hori , Yuji Ishida , Shouhei Murakami , Kenji Yanagi
发明人： Kazuyuki Hori , Yuji Ishida , Shouhei Murakami , Kenji Yanagi
IPC分类号： H04L5/12
CPC分类号： H04L27/2614 , H04L27/2624
摘要： An OFDM modulator having a peak factor reduction function. The OFDM modulator has a peak factor reduction unit between an IFFT unit and a guard interval insertion unit thereof. The peak factor reduction unit converts a complex signal X1 outputted from the IFFT unit into a complex signal X2 with a reduced peak factor based on subcarrier map information. The peak factor reduction unit generates a peak factor reduction signal by a linear combination of complex exponential functions that correspond to subcarrier frequencies to be used for wave transmission, as bases. The peak factor reduction signal is derived by repetition of, for example, a weighted least squares method or convolution processing by a fast Fourier transform.
摘要翻译： 一种具有峰值因子减小函数的OFDM调制器。 OFDM调制器在IFFT单元与其保护间隔插入单元之间具有峰值因子减小单元。 峰值因子降低单元基于副载波映射信息将从IFFT单元输出的复信号X 1以具有降低的峰值因子的复信号X 2转换。 峰值因子降低单元通过对应于用于波传输的副载波频率的复指数函数的线性组合作为基础产生峰值因子减小信号。 通过重复例如加权最小二乘法或快速傅里叶变换的卷积处理来导出峰值因子降低信号。
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公开(公告)号：US07809078B2
公开(公告)日：2010-10-05
申请号：US12027035
申请日：2008-02-06
申请人： Kazuyuki Hori , Yuji Ishida , Shouhei Murakami , Kenji Yanagi
发明人： Kazuyuki Hori , Yuji Ishida , Shouhei Murakami , Kenji Yanagi
CPC分类号： H04L27/2614 , H04L27/2624
摘要： An OFDM modulator having a peak factor reduction function. The OFDM modulator has a peak factor reduction unit between an IFFT unit and a guard interval insertion unit thereof. The peak factor reduction unit converts a complex signal X1 outputted from the IFFT unit into a complex signal X2 with a reduced peak factor based on subcarrier map information. The peak factor reduction unit generates a peak factor reduction signal by a linear combination of complex exponential functions that correspond to subcarrier frequencies to be used for wave transmission, as bases. The peak factor reduction signal is derived by repetition of, for example, a weighted least squares method or convolution processing by a fast Fourier transform.
摘要翻译： 一种具有峰值因子减小函数的OFDM调制器。 OFDM调制器在IFFT单元与其保护间隔插入单元之间具有峰值因子减小单元。 峰值因子降低单元基于子载波映射信息将从IFFT单元输出的复信号X1转换为具有降低的峰值因子的复信号X2。 峰值因子降低单元通过对应于用于波传输的副载波频率的复指数函数的线性组合作为基础产生峰值因子减小信号。 通过重复例如加权最小二乘法或快速傅里叶变换的卷积处理来导出峰值因子降低信号。
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