Patent ID: 11881974
Assignee: UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A demodulation apparatus comprising:
an analog front end configured to down-convert a radio frequency (RF) signal to baseband and output envelope signals;
a time difference demodulation path configured to demodulate a time difference between the envelope signals and output data; and
an amplitude demodulation path configured to demodulate the amplitude of the envelope signals and output data,
wherein the time difference demodulation path comprises:
a comparator configured to compare the envelope signals to a threshold voltage to form pulses corresponding to the envelope signals;
an edge detector configured to detect edges of the pulses; and
a time-to-digital converter (TDC) configured to form digital code corresponding to a time difference between the detected edges of the pulses.