CARRIER WAVE REPRODUCTION CIRCUIT

Title:

CARRIER WAVE REPRODUCTION CIRCUIT

Document Type and Number:

Japanese Patent JP2019220797

Kind Code:

A

Abstract:

To achieve high demodulation performance by estimating phase noise of a carrier wave with high precision.SOLUTION: The carrier wave reproduction circuit includes: a first phase rotation device 2 which rotates a phase of an input signal; an adaptive equalizer 3 which compensates for a frequency characteristic of a phase rotation signal of an input signal with a phase rotated; a phase error detector 4 which detects a phase error included in the compensated phase rotation signal; a rotation signal generation section 6 which generates a phase rotation control signal on the basis of a phase error; and a second phase rotation device 7 which rotates a phase of an input signal on the basis of the phase rotation control signal. The first phase rotation device 2 rotates a phase of an input signal on the basis of the phase rotation control signal.SELECTED DRAWING: Figure 1

Inventors:

TANAKA YASUHIDE
MURATA HIDESHI

Application Number:

JP2018115523A

Publication Date:

December 26, 2019

Filing Date:

June 18, 2018

Export Citation:

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