| 摘要 |
<p>An envelope detector for an amplitude and phase modulated carrier includes in-phase and quadrature-phase product demodulators 104, 106 whose outputs are passed through low pass filters 110, 112 separately. These separate filtered outputs are then squared 114, 116 and summed 118. The square root 120 of the resulting sum signal is taken to produce the desired output signal whose amplitude is proportional to the envelope of the composite modulated carrier. <IMAGE></p> |
