US Patent 11664883 Time domain duplexing repeater using envelope detection

Aspects of the subject disclosure may include, a device having an envelope detector, an oscillator, a switch driver, a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations of comparing a first signal received from the envelope detector and a second signal received from the oscillator within a high probability interval, thereby generating a valid detection; and activating the switch driver responsive to the valid detection. Other embodiments are disclosed.