Ami Research & Development, LLC

Brian Molen

John T Apostolos

William Mouyos

Benjamin G McMahon

Judy Feng

Paul Gili

Kurt Colon

Walter Chase

Techniques for implementing series-fed antenna arrays with a variable dielectric waveguide. In one implementation, coupling elements with optional controlled phase shifters are placed adjacent each radiating element of the array. To avoid frequency sensitivity of the resulting array, one or more waveguides have a variable propagation constant. The variable waveguide may use certain materials exhibiting this phenomenon, or may have configurable gaps between layers. Plated-through holes and pins can control the gaps; and/or a 2-D circular or a rectangular travelling wave array of scattering elements can be used as well.

Travelling wave antenna feed structures

A dielectric travelling wave antenna (DTWA) using a TEM mode transmission line and variable dielectric substrate.

Quasi TEM dielectric travelling wave scanning array

A Nuclear Quadrupole Resonance detection system with features that include:

Nuclear quadrupole resonance system

A cylindrically symmetric satellite antenna that provides directional and omnidirectional operating modes in a compact form factor. Feed points located at the top of the cylindrical structure provide increased platform isolation. Combining networks, disposed below or within the cylindrical structure, may be replaced with inexpensive baluns composed of coaxial line sections.

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Windham, NH, United States of America

Brian Molen