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公开(公告)号：EP1869769B1
公开(公告)日：2013-05-01
申请号：EP04786460.8
申请日：2004-08-04
IPC分类号： H03M1/00
CPC分类号： H03F3/3432 , H03F1/22 , H03F2200/331 , H03M1/0863 , H03M1/742
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公开(公告)号：EP1668856A2
公开(公告)日：2006-06-14
申请号：EP04786458.2
申请日：2004-08-04
IPC分类号： H04L25/49
摘要： A noise-shaping coder with variable or reconfigurable characteristics is disclosed. In one exemplary embodiment, an improved apparatus for signal modulation is disclosed. The apparatus (see figure 1) generally comprises a noise-shaping coder having programmable coefficients, (see figure 1, CSEL), programmable coder order (see figure 1, MSEL), programmable oversampling frequency (see figure 1, CKEN), and/or programmable dither (see figure 1, D). In a second exemplary embodiment, an improved method for implementing noise shaping coding is disclosed. The apparatus generally compromises a means for switching from one order coder to another order coder, as well as switching oversampling frequency.
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公开(公告)号：EP1668856B1
公开(公告)日：2012-02-08
申请号：EP04786458.2
申请日：2004-08-04
摘要： A noise-shaping coder with variable or reconfigurable characteristics is disclosed. In one exemplary embodiment, an improved apparatus for signal modulation is disclosed. The apparatus (see figure 1) generally comprises a noise-shaping coder having programmable coefficients, (see figure 1, CSEL), programmable coder order (see figure 1, MSEL), programmable oversampling frequency (see figure 1, CKEN), and/or programmable dither (see figure 1, D). In a second exemplary embodiment, an improved method for implementing noise shaping coding is disclosed. The apparatus generally compromises a means for switching from one order coder to another order coder, as well as switching oversampling frequency.
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公开(公告)号：EP1869769A2
公开(公告)日：2007-12-26
申请号：EP04786460.8
申请日：2004-08-04
IPC分类号： H03M1/00
CPC分类号： H03F3/3432 , H03F1/22 , H03F2200/331 , H03M1/0863 , H03M1/742
摘要： A radio frequency digital-to-analog converter with a programmable current output. In exemplary aspects of the invention, improved apparatus and methods for providing (i) current mirror matching, (ii) enhanced current pulse rising edge performance, (ii) reduced base voltage swing, and (iv) compensated high voltage swing, are provided. The foregoing apparatus and methods can be applied to any RF signal application (wireless or otherwise), including for example wireless cellular handsets.
摘要翻译： 具有可编程电流输出的射频数字 - 模拟转换器。 在本发明的示例性方面中，提供了用于提供（i）电流镜像匹配，（ii）增强的电流脉冲上升沿性能，（ii）降低的基极电压摆幅和（iv）补偿的高电压摆幅的改进的装置和方法。 上述装置和方法可以应用于任何RF信号应用（无线或其他），包括例如无线蜂窝手机。
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5.发明公开
公开(公告)号：EP1665701A2
公开(公告)日：2006-06-07
申请号：EP04780201.2
申请日：2004-08-04
IPC分类号： H04L27/10
CPC分类号： H03H17/0628 , G06F5/14 , G06F2205/061 , H03H17/0614
摘要： Improved interpolator (1304) and decimator (1324) apparatus and methods, including the addition of an elastic storage element (192) comprises a FIFO which advantageously allows short term variation in sample clocks to be absorbed, and also provides a feedback mechanism for controlling a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified imterpolator and decimator.
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