Raytheon Company

Christopher L Smith

James T Johnson

Michael D Gordon

Matthew Salem

Robert L Sisk, Iii

Daniel P Margavio

Tiffany Pouw

Methods and apparatus for a desiccant saturation monitoring system having a body with a first portion configured to hold a desiccant material and a second portion configured to position a sensor in relation to the desiccant material. A light source can irradiate the desiccant material and the sensor can detect irradiance from the desiccant material for at least one wavelength to determine saturation information for the desiccant material.

Desiccant saturation level monitoring

Embodiments of the present disclosure relate to a substrate integrated waveguide monopulse antenna. The antenna comprises a substrate having first and second opposing surfaces. A first conductor is disposed on the first surface of the substrate. A plurality of antenna elements are provided on the first surface of the substrate. A second conductor is disposed on the second surface of the substrate. A plurality of conductive via holes extend through said substrate and extend between the first and second surfaces. The via holes are arranged to form a plurality of resonant cavities with at least one resonant cavity coupled to each of the antenna elements. The substrate also comprises a plurality of hybrid couplers, and two of the plurality of resonant cavities are coupled to at least one port of the plurality of hybrid couplers. A plurality of output couplers provided on the second surface of the substrate.

Substrate integrated waveguide monopulse and antenna system

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Van Alstyne, TX, United States of America

Christopher L Smith