Coherent radar receiver that comprises a sigma delta modulator
| DWPI Title: System for receiving and processing coherent signals, has integrated circuit with sigma delta modulator that receives analog signal and convert it to digital signal, the analog signal based upon pulsed signal and reference signal |
| Abstract: Described herein are various technologies relating to processing a coherent signal. A receiver is configured to receive an analog signal, and process the analog signal to generate an input analog signal. The input analog signal has been modulated according to a suitable modulation sequence. A coherent signal sampler coherently samples the modulation sequence, and the result of such sampling is in turn used to demodulate the input analog signal. The resultant signal is then passed to a sigma delta modulator, where it is converted to digital form. |
| Use: System for receiving and processing coherent signals. |
| Advantage: The system is relatively simple to implement and reduces the noise level and pulse modulation can be used instead of impulse modulation. |
| Novelty: The system (200) has a receiver with an antenna that is configured to receive a pulsed signal. An integrated circuit that comprises of a coherent signal sampler (110) that is configured to coherently sample a pseudorandom sequence to generate a reference signal, the pseudorandom sequence used to modulate a transmitted signal, and the pulsed signal is based upon the transmitted signal. And a sigma delta modulator (112) that is configured to receive an analog signal and convert the analog signal to a digital signal, the analog signal based upon the pulsed signal and the reference signal. |
| Filed: 3/18/2015 |
| Application Number: US14662106A |
| Tech ID: SD 13154.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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