Polyphase PDM amplifier

摘要: A polyphase PDM amplifier is disclosed including plural parallel stages (10, 12, 14, 16), all amplifying the same input signal. The outputs are combined to produce a output. various modulate carrier signals of like frequencies but differing phases. Capacitors (40, 42, 44, 46) connected from each output common circuit node (48). These capacitors reduce amplitudes spurious, out-of-phase components in which introduced by modulation-demodulation process.