公开(公告)号：US20070066249A1

公开(公告)日：2007-03-22

申请号：US11385389

申请日：2006-03-21

申请人： Spyridon Kavadias

发明人： Spyridon Kavadias

IPC分类号： H03C1/52

CPC分类号： H04B1/28 ,  H03J3/06 ,  H04B1/1036 ,  H04H20/57 ,  H04H40/27

摘要： Methods and systems for programmable baseband filters supporting auto-calibration in a mobile digital cellular television environment are provided. Aspects of the method may include generating within a single-chip multi-band RF receiver, at least one control signal based on signal strength of a baseband frequency signal generated within the single-chip multi-band RF receiver. A bandwidth of a filter integrated within the single-chip multi-band RF receiver may be adjusted via the generated at least one control signal. The filter may be used for filtering the generated baseband frequency signal. A frequency response signal of the filter integrated within the single-chip multi-band RF receiver may be determined via a reference frequency signal. An attenuated reference frequency signal may be generated by attenuating the reference frequency signal. The attenuated reference frequency signal may be compared with the frequency response signal. The at least one control signal may be generated based on the comparison.

摘要翻译： 提供了在移动数字蜂窝电视环境中支持自动校准的可编程基带滤波器的方法和系统。 该方法的方面可以包括在单芯片多频带RF接收机内生成基于在单芯片多频带RF接收机内生成的基带频率信号的信号强度的至少一个控制信号。 集成在单芯片多频带RF接收机内的滤波器的带宽可以经由所生成的至少一个控制信号进行调整。 滤波器可以用于对生成的基带频率信号进行滤波。 可以通过参考频率信号来确定集成在单芯片多频带RF接收机内的滤波器的频率响应信号。 可以通过衰减参考频率信号来产生衰减的参考频率信号。 衰减的参考频率信号可以与频率响应信号进行比较。 可以基于比较来生成至少一个控制信号。