The Government of the United States of America, As Represented by the Secretary of Homeland Security

At&t Bell Laboratories

Lucent Technologies Inc.

Peter Roland Smith

Jeffrey Brian Barber

Barry Thomas Smith

James Christopher Weatherall

Yinon Degani

King Lien Tai

Martin C Nuss

George T Harvey

Michael S Heutmaker

David H Auston

The present disclosure is directed to a measurement system for measuring a reflection coefficient of a test sample, including: a transceiver antenna configured to be coupled to a source of electromagnetic radiation; and a RAM positioned between the transceiver antenna and a measurement region of the transceiver antenna, wherein the RAM comprises an aperture substantially orthogonal to and substantially aligned with a transceiving axis of the transceiver antenna. A method for obtaining error correction of a measurement system and a method of measuring a reflection coefficient in a test sample are also provided.

Measurement system and methods of measuring a reflection coefficient

Methods of obtaining error correction for reflection coefficient measurement systems

The present disclosure is directed to an artificial skin having a radar absorbing layer and a conductive layer containing an electrically conductive material, wherein the artificial skin has a reflection coefficient substantially equal to a human skin reflection coefficient, the human skin reflection coefficient being determined at an electromagnetic radiation frequency ranging from 1-500 GHz. A human phantom composed of the artificial skin and methods of testing the contrast resolution sufficiency of and active millimeter wave imaging system using the human phantom are also disclosed.

Artificial skin having a reflection coefficient substantially equal to human skin

The present disclosure is directed to an artificial skin including: a radar absorbing layer; a conductive layer comprising at least one material selected from the group consisting of a semiconductive oxide deposited onto a substrate and an electrically conductive polymer, wherein the substrate is in contact with the radar absorbing layer, and wherein the artificial skin has a reflection coefficient substantially equal to a human skin reflection coefficient, the human skin reflection coefficient being determined at an electromagnetic radiation frequency ranging from 1-500 GHz. A human phantom composed of the artificial skin and methods of using the human phantom are also disclosed.

Artificial skin and human phantom for use in active millimeter wave imaging systems

The specification describes a MCM IC package with improved RF grounding. The package has at least one RF IC chip bonded to an interconnect substrate and the substrate is interconnected to an intermediate printed wiring board (IPWB). The IPWB is interconnected in turn to a system printed wiring board (SPWB). The RF IC chip is metallized on the backside, and is flip chip bonded directly to the SPWB thereby eliminating two intermediate interconnections and reducing the impedance of the interconnection between the RF chip and the SWBP.

RF IC package

Amplitude noise is dramatically reduced in an optically pumped modelocked laser arrangement by incorporating an intra-cavity or external cavity mode selection element with a continuous-wave pump laser coupled optically to a modelocked laser. The mode selection element causes a light beam generated from the pump laser to operate nominally at a single frequency, that is, substantially a single longitudinal mode. Mode selection may be realized with an air-spaced or solid material Fabry-Perot etalon.

Amplitude noise reduction for optically pumped modelocked lasers

Direct measurements of electronic device and material response times are made by using high speed photoconductors as both pulse generators and sampling gates.

Growing community of inventors

Westfield, NJ, United States of America

Peter Roland Smith