Abstract: A system comprising a first expired drug usability device is provided. The first expired drug usability device comprises a first spectrometer and one or more first processors. The first processors are configured to: obtain at least one expired drug machine learning-artificial intelligence (ML-AI) model associated with a pharmaceutical drug; obtain drug expiration information of a sample of the pharmaceutical drug, wherein the drug expiration information comprises spectrometer data associated with using the first spectrometer on the sample; input the drug expiration information into the at least one expired drug ML-AI model to determine usability information associated with the sample of the pharmaceutical drug; and perform one or more actions based on the usability information.

Abstract: In accordance with one form of the present invention, an Adaptively Peaked Super-Regenerative Filter (APSRF) is provided, which preferably includes an interference suppression system (ISS), a summing block, a phase splitter, one or more variable attenuators, three couplers, an amplifier and a filter. The APSRF provides for significant narrowing of the bandwidth and a significant increase in the SNR and Q transfer function of the filter. The output of the amplifier or filter is sampled by one of the couplers and used as a reference sample signal to the ISS. The ISS includes an adaptive loop, which adjusts the reference sample signal in phase and amplitude to form a replica signal. The replica signal is designed to cancel an input sample signal taken from another coupler and applied to the summing block. An output of the summing block provides an error sample signal to the ISS, which enables the ISS to adaptively optimize the nulling function by adjusting the amplitude and phase of the replica signal.

Abstract: A digital system is disclosed for demodulating relative phase-shift modulated binary data using a delay circuit to store one data bit period of sample bits for phase comparison with the next data bit period of sample bits, and a cascaded delay circuit of the same length to effectively repeat the demodulation one data bit period later. An up-down counter effectively integrates the difference between current demodulated sample bits and the demodulated sample bits of the previous data bit period to enhance data bit detection. Such data demodulation is used from a selected one of three channels, a center channel for no Doppler shift compensation, and two channels for positive and negative Doppler shift compensation.