| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a poly-phase filter circuit capable of obtaining eight sets of high-frequency signals having the phase difference of 45 degrees mutually without adjusting especially the resistance value of a resistor or the capacitance value of a capacitor which are constituting a poly-phase filter. <P>SOLUTION: The poly-phase filter 3, in which eight pieces of resistors having the same resistance value and capacitors having the same capacitance value are connected annularly and when eight high-frequency signals outputted from the output terminals 231-238 of the poly-phase filter 2 are inputted from input terminals 301-308, eight kinds of high frequency signals having the phase difference of 45 degrees mutually and equal amplitude substantially are outputted from output terminals 311-318, is provided. <P>COPYRIGHT: (C)2008,JPO&INPIT |
