Robert Y. Loo

TL;DR: In this article, a periodic surface texture is used to alter the electromagnetic properties of a metal ground plane by covering the surface with varactor diodes, and a tunable impedance surface is built, in which an applied bias voltage controls the resonance frequency and the reflection phase.

TL;DR: In this article, two different switch designs with three different switch fabrication techniques are presented for a total of six switch structures, each switch has a multiple-layer armature with a suspended biasing electrode and a conducting transmission line affixed to the structural layer of the armature.

TL;DR: In this paper, a reconfigurable microwave surface that performs as a new kind of beam steering reflector is described. The surface is textured with an array of tiny resonators, which provide a frequency-dependent surface impedance.

TL;DR: In this article, a flexible antenna array comprises a plurality of layers of thin metal and a flexible insulating medium arranged as a sandwich of layers, each layer of the sandwich is patterned as needed to define: (i) antenna segments patterned in one of the metal layers, (ii) an array of metallic top elements formed in a layer spaced from the antenna segments, (iii) a metallic ground plane formed from another metal layer, and (iv) inductive elements coupling each of the top elements in the array of top elements with said ground plan.

TL;DR: In this article, a microelectromechanical system (MEMS) switch consisting of a transmission line formed on a substrate, a substrate electrostatic plate formed on the substrate, and an actuating portion was used to bridge the transmission line gap and close the circuit.