Patent Number: 7,535,291

Title: AM demodulator

Abstract: An amplitude modulation receiver including an antenna for receiving a signal and an input filter connected to the antenna. A variable gain amplifier is connected to the input filter and is responsive to a gain control signal. An A/D converter is connected to the variable gain amplifier and is responsive to a sampling signal and provides a sampled digital signal. A D/A converter receives a demodulated signal and provides an analog output signal. A controller receives and demodulates the sampled digital signal from the A/D converter, generates the gain control signal for the variable gain amplifier, generates the sampling signal for the A/D converter, and provides the demodulated signal to the D/A converter. The demodulation and generation of the gain control signal and the sampling signal are performed in software.

Inventors: Iancu; Daniel (Pleasantville, NY)

Assignee: Sandbridge Technologies, Inc.

International Classification: H03D 1/18 (20060101); H03D 1/04 (20060101); H03D 1/06 (20060101)

Expiration Date: 2021-05-19 0:00:00