Patent ID: 11923904
Assignee: APPLE INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method of operating an electronic device having an array of antennas that include antenna radiating elements and photodiodes coupled to the antenna radiating elements, the method comprising:
generating, using the photodiodes, current on the antenna radiating elements that transmits first wireless signals at a frequency greater than or equal to 100 GHz while the photodiodes are illuminated using a first optical local oscillator (LO) signal and a second optical LO signal that is offset in wavelength with respect to the first optical LO signal; and
reflecting, using the antenna radiating elements, second wireless signals at the frequency while the photodiodes are controlled to exhibit one or more output impedances that are mismatched at the frequency with respect to input impedances of the antenna radiating elements.