Compared to the simple diode needed to demodulate AM radio signals, the detector ... circuit generates the pulses at the zero-crossing point, a low-pass filter cleans up the signal, and a cheap ...

Spectrum Control's family of software-definable, RF+ sysetm blocks work with mixed-signal devices like Direct RF FPGAs (see ...

A Butterworth low pass filter processes the DDS signal and then feeds a two-transistor amplifier. The circuit will output about 0dBm into 50 ohms. The power detector is an Analog Devices AD8307 ...