Patent ID: 11879917
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The phase detector according to claim 1, wherein
among the phase shift circuits, each of a circuit to phase-shift the first positive-phase signal included in the first differential signal and a circuit to phase-shift the first negative-phase signal included in the first differential signal includes a high-pass filter including a resistor and a variable capacitor, and among the phase shift circuits, each of a circuit to phase-shift the second positive-phase signal included in the second differential signal and a circuit to phase-shift the second negative-phase signal included in the second differential signal includes a low-pass filter including a resistor and a variable capacitor, and
the phase detector further comprises a comparison circuit to adjust a capacitance value of each of the variable capacitor included in each of the high-pass filters and the variable capacitor included in each of the low-pass filters on a basis of an amplitude of an output signal of each of the high-pass filters and an amplitude of an output signal of each of the low-pass filters.