BARBI A NEW MICROWAVE PRECOLLISION AUTOMOBILES - SENSOR FOR AIRBAG ACTIVATION IN Gerald F. Ross This paper describes a novel and low-cost scheme for automotive precollision sensing called BARBI, an acronym for BAseband Radar Bag Initiator. The proposed technique involves the transmission and reception of a subnanosecond baseband or video impulse-like signal (i.e., no rf carrier) and requires

THE RroENERATIVE DIGITAL TRANSDUCER (RDT): A NmY ACTIVE MICROWAVEFIELD SENSOR FOR INDUSTRIAL MEASUREMENTSAND CONTROL R. G. Bosisio, ABSTRACT L. Nappert and H. Hua Quoc A regenerative digital transducer (RDT) with an active linear response is described. The RDT can be operated in a contact or non-contact mode for moisture measurements in dielectric webs and in liquids or oils flowing inside di

MICROWAVE METHOD FOR MEASUREMENT OF FIBER ORIENTATION IN PAPER Martti Tiuri and Pauli Liimatainen ABSTRACT A microwave method for the measurement of fiber orientation in paper, is described. The method uses a dual mode microwave cavity where the modes have equal resonant frequencies and mutually perpendicular electric fields. The paper is inserted through the cavity so that the electric

NON-DESTRUCTIVE REINFORCED By B~rje ABSTRACT MEASUREMENTS BY MEANS OF THE GLASS-FIBRE OF MICROWAVES CONTENT IN PLASTICS Forssell * So far, the usual means of measuring the glass content in glass-fibre reinforced plastics has involved destruction of the material. A new method developed at ELAB allows such measurements to be made non-destructively by means of microwaves. The method is based u

A COMPUTER MODEL FOR THE AND & DYNAMIC DRYING BEHAVIOUR SYSTEMS OF MICROWAVE HEATING E M EL DEEK* R B SMITH* ABSTRACT A general computer model has been developed to investigate the dynamic behaviour of microwave drying and heating of sheet and filamentary materials. It accommodates a variety of waveguide applicator configurations. The input information is the physical properties of the

DESIGN OF RESONANT CAVITIES AS HEATING DEVICES AT 896 MHz AND 345 GHz. A.C.Metaxas * ABSTRACT A new method is presented which employs dimensions of TM0l0 cavities for the heat samples of known dielectric properties. The treat a column of distilled water is described efficiencies and the average electric field water in the 2.45 GHz cavity are obtained a theory to calculate the treatment of cyl

HIGH POWER MULTIPLE IMPATT AMPLIFIERS J. Hughes and K. Wilson ABSTRACT A method of producing high power amplification by combining a number of moderate power Impatt reflection amplifiers is proposed and initial experimental results are reported. Power combination is to be effected by means of a new power combiner, the "Shybrid", which has particular merits making it well suited for this app

A MULTI-STAGE SOLID STATE AMPLIFIER AMARJIT S. BAINS ABSTRACT - A solid state X-band amplifier consisting of five cascaded stages is described. The amplifier is of hybrid type, where combination of high power silicon IMPATT amplifier modules with a Gunn diode preamplifier stage provides an output power of greater than l3.0watts. The gain of the amplifier is 26-dB, with an instantaneous bandwidth