Rockwell International Corporation

Alcatel Network Systems, Inc.

Michael Brian

William F Weber

Larry D McPherson

A springy, low dielectric retainer device in the form of a rod, a triangle, an ellipse or whatever, is used in a compressed condition to hold RF energy absorber blocks in position juxtaposed 'energy leaky' RF circuitry. The absorber blocks are held in position due to frictional forces provided by the compressed retainer. In this manner, the absorber blocks can be re-positioned to obtain optimum amplitude/frequency response characteristics from the affected RF circuit.

Absorber tuning block retainer apparatus

If the timing of detection of an analog signal, by an A/D converter, with respect to its theoretical value is optimum, the most significant error bit output by the A/D converter will integrate to a zero value. The present invention takes the information indicative of the most recent history of amplitude variation of the analog signal to logically modify (affect polarity) the most significant error bit and apply it to an integrator. The integrated value is used to adjust a variable time delay clock circuit use in determining the detection time in the A/D converter.

Dynamic strobe timing circuitry for A/D conversion apparatus

When an A/D converter is converting a multilevel analog signal into a plurality of distinct digital words, it needs to have a very accurate reference voltage which is tied to the voltage levels of the analog signal being converted for high accuracy. The present invention takes the most significant bit and an error bit signal from the analog-to-digital converter and logically combines these signals in such a way that error feedback signals are generated which are integrated over the long term and used to adjust the reference voltages supplied to the analog-to-digital converter wherein the feedback error signals average to zero.

Growing community of inventors

Garland, TX, United States of America

Michael Brian