Direct sampling circuit and receiver

摘要

A sampling circuit is provided that includes a first sampling circuit that shifts a frequency, at which a gain of a frequency characteristic is maximized, to a lower frequency side, and a second sampling circuit that shifts the frequency, at which the gain of the frequency characteristic is maximized, to a higher frequency side. The sampling circuit also includes an output section provided in an output side of the first sampling circuit and an output side of the second sampling circuit, and outputs a sum or a difference between an output from the first sampling circuit and an output from the second sampling circuit.

主权项

1. A sampling circuit, comprising:
a first sampling circuit that has a first frequency characteristic having a first frequency that is shifted to a lower frequency than a predetermined frequency according to a carrier frequency of an input signal, and that generates first outputs from the input signal, a gain of the first frequency characteristic being maximized at the first frequency; a second sampling circuit that has a second frequency characteristic having a second frequency that is shifted to a higher frequency than the predetermined frequency, and that generates second outputs from the input signal, a gain of the second frequency characteristic being maximized at the second frequency; and an output section that is provided in an output side of the first sampling circuit and an output side of the second sampling circuit, and outputs a sum or a difference between the first outputs and the second outputs.