| 摘要 |
A superregenerative oscillator RF receiver having a differential output that has the advantage of providing an improved operating range and increased receiver sensitivity without affecting receiver cost or current requirements. The present invention comprises a receiver that has a super-regenerative oscillator from which the demodulated output is taken in differential form. This is achieved by generating collector and emitter output signals, low pass filtering both signals, and then combining them in a difference amplifier. The resulting waveform contains approximately twice the signal content than would be yielded from a singled-ended circuit. The preferred embodiment of present invention can also achieve quench noise cancellation with proper layout and the use of a common mode low pass filter followed by a difference amplifier.
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