Abstract: A system and method for record linkage includes performing an entity augmentation process for linking new data records with existing entities in a database. Performing the entity augmentation process includes performing an exact matching sub-process that includes accessing existing entity unique identifier (UID) keys in a memory cache layer and comparing a new data record UID key to the existing entity UID keys.

Abstract: A system and method for record linkage includes performing an entity augmentation process for linking new data records with existing entities in a database. Performing the entity augmentation process includes performing an exact matching sub-process that includes accessing existing entity unique identifier (UID) keys in a memory cache layer and comparing a new data record UID key to the existing entity UID keys.

Abstract: A method for designing a filtering device essentially comprising the steps of determining a desired response of the filtering device at a selected frequency; and selecting a circuit element that exhibits a parasitic effect at the selected frequency, wherein the parasitic effect results in the circuit element having the desired response at the selected frequency. A second method for designing a filtering device, similar to the first, but utilizes a field effect at the selected frequency, instead of a parasitic effect.A frequency converter comprising a notch filter which filters a first frequency and does not filter a second frequency. The notch filter comprises a lumped parameter element and a transmission line, wherein the transmission line is coupled to the lumped parameter element.

Abstract: A method and apparatus for a phase shifter includes a controller controlling a voltage controlled phase shifting circuit for shifting the phase of a high frequency input signal. The phase shifting circuit includes microstrip elements arranged in a 3 dB hybrid structure, and also includes first and second reverse-biased diodes electrically connected to the microstrip elements and operating as varactors. The controller drives a D/A converter to control the bias voltage of the phase shifting circuit and thereby to adjust the phase shift of a high frequency output signal relative to the high frequency input signal.

Abstract: A biasing and monitoring system for use with a circuit. The system comprises a biasing device, which is coupled to the circuit and which biases a circuit variable; and a monitoring device, which monitors a first indicator variable, and which comprises means for communicating information about the first indicator variable; and a controlling device. The controlling device controls the biasing device, receives information about the first indicator variable, is coupled to the biasing device and to the monitoring device, and comprises means for determining a desired value for the circuit variable.The system can be implemented in an amplifier system comprising a field effect transistor ("FET"). The system biases the gate voltage of the FET so as to minimize the intermodulation products for any given value of temperature. The system uses a look-up table to determine the proper biasing voltage, and desired source current, for any given temperature.