Motorola Corporation

Motorola Solutions, Inc.

Andreas Schaller

Timothy J Collins

Theodore Hockey

Benjamin Bekritsky

Marcus Reister

Siegfried Pongratz

Thorsten Machande

An apparatus system, and techniques for detecting temperature change are disclosed. The system includes a temperature sensitive antenna that can be included in an RFID tag device. The antenna is associated with a temperature sensitive material that, upon being exposed to a particular temperature level over a time interval, causes at least one of a change in the resonance frequency of the antenna and change in antenna signal strength (e.g., antenna gain). An RFID reader is also provided that sends commands to the tag device and determines the existence of a temperature change based on a comparison of signal strengths received on different frequencies from the antenna.

RFID tag device with temperature sensitive antenna

An optical planar wavelength selective filter is formed on a printed circuit substrate. Low optical loss polymers are used to make a layered structure that contains waveguides and free travel zones. A diffraction grating is strategically placed on the printed circuit substrate so that light from one waveguide is diffracted by the grating to exit the free travel zone and pass through the other waveguides. The low optical loss polymer is a reaction product of the hydrolysis and polycondensation reaction of organically functionalized alkoxysilanes. With a proper grating, the apparatus can be used as an optical triplexer at frequencies of 1310, 1490, and 1550 nanometers.

Optical planar wavelength selective filter and method of manufacture

A method and arrangement for aligning an optical component () on a printed wiring board () by using a reflector () below a surface mount technology camera to determine the offset (&#x394;) between the printed wiring board electrical layout and the light beam in the printed wiring board optical layer.

Method and arrangement for aligning an optical component on a printed wiring board

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Wiesbaden, Germany

Andreas Schaller