Because the network in the modulator circuit has two floating differential outputs, the demodulator network requires two floating sources. The simplest way to accomplish this requirement is by using ...

The CMX994 direct-conversion receiver targets next generation multi-mode software defined radios (SDRs). Features include a VCO for VHF applications, an operating frequency range of 100 MHz to 1 ...

That’s because this demodulator is about as close to a direct translation between a vacuum tube circuit and a silicon circuit as possible.

Based on a low IF architecture, the circuit comprises a RF receiver section, a demodulator, and an audio amplifier that, wherever needed, can be fitted directly to an external earpiece.