Motorola Corporation

Joseph H Kao

Warren L Seely

James H Stilwell

James Harvey Fleming

A sampling phase detector for a data bit synchronizer produces a constant level in the absence of data bit transitions. Reference voltages are provided and a switch selects between these reference voltages to provide an output which changes only when a data bit is detected and otherwise remains at a constant level. A loop filter operates together with the sampling phase detector to provide the constant voltage output in the absence of data bit transitions.

Sampling phase detector arrangement

A high isolation microwave module includes a housing floor with mounting surfaces for placing microwave components and housing walls ending in housing wall ends coupled to and projecting from the housing floor. A lid including a lid plate and lid walls ending in lid wall ends projects from the lid plate. The lid walls extend toward the housing floor and the plurality of housing walls extend toward the lid plate but neither the lid wall ends nor the housing wall ends are coupled to the housing floor or lid plate, respectively. A plurality of cavities exist between the adjacent lid walls between the housing and the lid plate and a plurality of irises exist between immediately adjacent housing walls and corresponding lid walls. The irises and cavities act as a multi-section high pass filter to provide attenuation to a microwave signal passing through the module.

Growing community of inventors

Mesa, AZ, United States of America

Joseph H Kao