Abstract: A system for measuring radiant signals includes a detector circuit for detecting a time multiplexed, measured radiant signal and reference signal. A switch is connected to the detector circuit for receiving signals from the detector circuit. A measured signal sampling circuit, a reference signal sampling circuit, a measured alias circuit and a reference alias circuit are connected to the switch, which is operative for switching among the sampling and alias circuits to remove sampling noise and improve switching latency.

Abstract: A millimeter wave pulsed radar system includes a radar synthesizer having a voltage controlled oscillator/phase locked loop (VCO/PLL) circuit, direct digital synthesizer (DDS) circuit and quadrature modulator circuit that are operative to generate an intermediate frequency local oscillator signal (IF/LO signal). A radar transceiver is operative with the radar synthesizer for receiving the IF/LO signal. A transmitter section has a frequency multiplier that multiplies the IF/LO signal up to a millimeter wave (MMW) radar signal and a receiver section and includes a direct conversion mixer that receives a MMW radar signal and the IF/LO signal to produce I/Q baseband signals that are later digitized and processed.

Abstract: A material separator apparatus having a continuous conveyor belt for support and transportation of materials to be separated and a motor to rotate the conveyor belt. The apparatus includes an electromagnet within the continuous belt to produce a magnetic field at the belt. An alternating current drives the electromagnet. This produces a magnetic field which in turn induces an eddy current in the materials to be separated. The eddy currents form the basis of a repulsive force which will produce different material trajectories based on the material properties such as conductivity and permeability. The wave form of the driving current is controlled to improve repulsive efficiency and help assist in differentiating among several classes of materials.