A radiofrequency transceiver system comprising: an antenna to receive a radiofrequency tag input signal; a clock extractor coupled with the antenna to extract a clock input signal from the tag input signal; an oscillator controller coupled with the clock extractor to generate a plurality of clock output signals responsive to the clock input signal, each clock output signal having a different respective phase; a multiphase selector coupled with the antenna and the oscillator controller to output one of the plurality of clock output signals as a peak sampling clock signal, the respective phase of the one of the plurality of clock output signals determined to be closest, relative to others of the plurality of clock output signals, to a phase of the tag input signal; and a single-path detector coupled with the antenna and the multiphase selector to output a data output signal generated by sampling the tag input signal responsive to the peak sampling clock signal; a local oscillator to generate a reference clock signal, wherein the oscillator controller coupled with the local oscillator to generate the plurality of clock output signals further responsive to the reference clock signal; a delay controller coupled with the clock extractor to output a delayed clock input signal by applying, to the clock input signal, an adjustable phase delay that is responsive to a delay control signal; and a phase frequency detector coupled with the local oscillator and the delay controller to generate the delay control signal responsive to comparing the reference clock signal and the delayed clock input signal; wherein the oscillator controller is coupled with the clock extractor via the delay controller and receives the clock input signal as the delayed clock input signal, such that the oscillator controller is phase-synchronized according to the delayed clock input signal and the oscillator controller is frequency-synchronized according to the reference clock signal. an antenna to receive a radiofrequency tag input signal; a clock extractor coupled with the antenna to extract a clock input signal from the tag input signal; an oscillator controller coupled with the clock extractor to generate a plurality of clock output signals responsive to the clock input signal, each clock output signal having a different respective phase; a multiphase selector coupled with the antenna and the oscillator controller to output one of the plurality of clock output signals as a peak sampling clock signal, the respective phase of the one of the plurality of clock output signals determined to be closest, relative to others of the plurality of clock output signals, to a phase of the tag input signal; and a single-path detector coupled with the antenna and the multiphase selector to output a data output signal generated by sampling the tag input signal responsive to the peak sampling clock signal; a local oscillator to generate a reference clock signal, wherein the oscillator controller coupled with the local oscillator to generate the plurality of clock output signals further responsive to the reference clock signal; a delay controller coupled with the clock extractor to output a delayed clock input signal by applying, to the clock input signal, an adjustable phase delay that is responsive to a delay control signal; and a phase frequency detector coupled with the local oscillator and the delay controller to generate the delay control signal responsive to comparing the reference clock signal and the delayed clock input signal; wherein the oscillator controller is coupled with the clock extractor via the delay controller and receives the clock input signal as the delayed clock input signal, such that the oscillator controller is phase-synchronized according to the delayed clock input signal and the oscillator controller is frequency-synchronized according to the reference clock signal.