Patent ID: 11956341
Assignee: APPLE INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. An electronic device comprising:
an antenna radiating element;
a first photodiode coupled to the antenna radiating element and configured to convey wireless signals at a frequency greater than 100 GHz using the antenna radiating element, a first optical local oscillator (LO) signal, and a second optical LO signal; and
optical components configured to generate the first optical LO signal and the second optical LO signal, the optical components including
a first laser configured to emit the first optical LO signal,
a second laser configured to emit the second optical LO signal,
a second photodiode configured to generate a photodiode signal based on the first optical LO signal and the second optical LO signal, and
a subsampling mixer configured to generate a subsampled photodiode signal based on the photodiode signal and configured to tune the second laser based at least in part on a phase of the subsampled photodiode signal.