| 摘要 |
A superregenerative radio receiver (22) includes an antenna (24), configured to receive a radio frequency (RF) input signal. A pulse generator (30,46) generates a sequence of pulses at a sampling frequency, the pulses having a smooth rising edge and a fast falling edge. An RF oscillator (42), driven by the pulses generated by the pulse generator, has a positive feedback loop (64) coupled to the antenna, so that a characteristic of oscillation of the RF oscillator, when driven by the pulses, varies responsive to the RF input signal. Amplification circuitry (48) is coupled to the RF oscillator so as to generate an output signal having a level that varies responsive to the characteristic of the oscillation.
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