Accession Number : ADA181258

Title :   Development of a Pulsed Millimeter-Wave Network Analyzer.

Descriptive Note : Annual technical rept. (Final) 1 Feb 84-31 Mar 86,

Corporate Author : GEORGIA INST OF TECH ATLANTA BIOMEDICAL RESEARCH DIV

Personal Author(s) : Seals,Joseph ; Sharpe,Steven M. ; MacDonald,Anita ; Voeks,Robert E.

Report Date : NOV 1986

Pagination or Media Count : 225

Abstract : A pulsed millimeter-wave network analyzer operating in the 40-60 GHz band has been developed at Georgia Tech. The network analyzer consists of three custom-built units: (1) a MMW six-port system that includes sensitive superheterodyne receivers, ()2) a phaselocked MMW frequency synthesizer, and (3) a microprocessor-based system controller that provides internal control functions and communication interfaces. An IBM-PC desktop computer is used to input instructions, collect data, and perform required computations. This report summarizes the design, development, and operation of the network analyzer and discusses algorithms used for (1) calibration of the six-port system, (2) complex reflection coefficient computations, and (3) tissue dielectric property computations. Keywords: Bioeffects; Millimeter wave; Pulsed/continuous wave; and Permittivity measurement.

Descriptors :   *SPECTRUM ANALYZERS, ALGORITHMS, INTERFACES, INPUT, INSTRUCTIONS, CONTROL, MICROPROCESSORS, NETWORKS, CONTINUOUS WAVES, PULSES, CALIBRATION, COMPUTATIONS, INTERNAL, MILLIMETER WAVES, DIELECTRIC PROPERTIES, MEASUREMENT, MEDICAL EQUIPMENT, MICROWAVE EQUIPMENT, TISSUES(BIOLOGY), ELECTRICAL NETWORKS, SENSITIVITY, SUPERHETERODYNE RECEIVERS

Subject Categories : Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE