| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a direct sampling circuit having excellent frequency characteristics and a receiver by the use of a relatively simple structure and simple clocks. <P>SOLUTION: In each of discrete-time circuits 102-1 to 102-4, a charging switch 1021 is on/off-controlled by using any of four-phase control signals; a rotate capacitor 1022 shares, via the charging switch 1021, charge stored in an IQ generating circuit 101; a dump switch 1023 is on/off-controlled by use of another one out of the four-phase control signals, the phase of which is different from that of the control signal used to on/off-control the charging switch 1021; and a buffer capacitor 1026 shares, via the dump switch 1023, charge with the rotate capacitor 1022, thereby forming an output value. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
