National Semiconductor Corporation

Memorylink Corporation

Todd Thyes

Luu Thanh Nguyen

Peter Deane

William Paul Mazotti

Jia Liu

Haryanto Chandra

Brian Huss

Glenn Woodhouse

John Rukavina

Timothy Patrick Murphy

Daniel Thomas Sullivan

Brian John Melewski

Gregory W Burneske

Keely Anne Wagner

Techniques for manufacturing an optical transmission device in a manner so that the photonic device is protected from damage that can be caused by exposure to the environment and physical handling are described. The invention involves placing a lens or a lens array over a photonic device, either with or without the use of a receptacle device, such that the photonic device is contained within a sealed cavity. The invention has three main embodiments in which the photonic device can be hermetically sealed, quasi-hermetically sealed, or non-hermetically sealed. The optical transmission device can be configured to serve as an optical receiver, detector, or a transceiver device.

Optical sub-assembly packaging techniques that incorporate optical lenses

The quality of a channel for each of a plurality of receive antennas is determined in part by examining data collected during reception of test data. Substantially simultaneously, payload data is also used to evaluate channel quality for at least one antenna. A quality metric calculated for any given antenna is the result of measurements made upon the test and payload data. Parameters used to calculate the quality metric are preferably divided into two sets of non-identical parameters, those based on the test data and those based on the payload data. These parameters preferably include jitter, received signal strength, CRC errors and synchronization errors. By continuously updating quality metrics based on both test and payload data, more reliable assessments can be made of the various antennas being used. As a result, antenna selection is rendered commensurately more reliable thereby improving received signal quality.

Diversity reception employing periodic testing

Growing community of inventors

Appleton, WI, United States of America

Todd Thyes