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MICROWAVE AQUAMETRY
MICID'IAVE AQUAMETRY Andrzej Kraszewski ABSTRAcr. Sane problems ronnected with application of micra-lave techniques for m::Jisture content rreasurement in solid and liquid materials have been oresented. It has been shown that in many cases microwaves are superior to other rrethods because of the specific micIUNave prOPerties of materials and the =ssiliility of contactless, rerrote probing. Pres
LOW NOISE MM-WAVE RECEIVERS
LOW NOISE MM-WAVE RECEIVERS Erik L. Kollberg ABSTRACT In this review paper coherent low noise receivers for frequencies from about 20 GHz up to a few hundred GHz are discussed. Mixers using Schottky barrier diodes, the working horses in mm-wave receivers, are described in some detail. The noise sources are identified and methods to minimize the noise of room temperature and cooled single ende
MIC WAVE-GUIDING STRUCTURES FILLED WITH ANISOTROPIC MEDIA
MIC WAVE-GUIDING STRUCTURES FILLED WITH ANISOTROPIC MEDIA K.S.Grabowski, ~.Mazur, M.Kitlinski ABSTRACT There are considered generalized multiconductor lines with aany anisotropic layers which cover a broad range of practically iaportent microwave guides suitable for present and future applications in HIC technology. After a short review and evaluation of existing analyses enabling to study s
NEW SEMICONDUCTOR MATERIALS FOR MICROWAVE APPLICATIONS
GIGABIT ELECTRONICS - PRESENT STATE AND TRENDS
GIGABIT ELECTRONICS - PRESENT STATE AND TRENDS Berthold G. Bosch ABSTRACT Application fields for Gb/s electronics, with high-throughput signal processing as the prime motive, are indicated. Recent implementations of Gb/s ICs are mentioned. After describing and commenting on the multitude of silicon and GaAs approaches, a projection on their ultimate functional throughput rate (FTR) is attempt
OPTICAL COMMUNICATIONS VERSUS MICROWAVE TRANSMISSION SYSTEMS
TRAVELLING WAVE TUBE APPLICATIONS FOR MILLIMETRE WAVES
DESIGN AND PERFORMANCE OF A ONE MEGAWATT, 3.1 - 3.5 GHz COAXIAL MAGNETRON
DESIGN AND PERFORMANCE OF A ONE MEGAWATT, 3.1 - 3.5 GHz COAXIAL MAGNETRON Thomas E. Ruden ABSTRACT This paper describes a one megawatt coaxial magnetron which is mechanically tunable over a 12% frequency range. A new mode control technique for suppression of competing cavity modes is employed. Spurious signals are reduced to better than 55 dB below the peak output power of the tube via thi
IMAGE RECOVERY MILLIMETER-WAVE MIXER
IMAGE RECOVERY MILLIMETER-WAVE MIXER B. Vowinke1* ABSTRACT This paper describes the design of an 80 GHz image recovery mixer that has a conversion loss of 4.4 dB. The image filter is a circular highpass filter using the cutoff properties of a waveguide section with reduced diameter. LO injection is performed by a TE111-mode bandpass filter. The mixer noise temperature is 650 K at room temperatu
MILLIMETRE WAVE FINLINE BALANCED MIXERS
MILLIMETRE WAVE FINLINE BALANCED MIXERS R.N. Bates and M.D. Coleman * Abstract This paper describes the design and performance of balanced mixers for use in the frequency ranges 27 to 40 GHz and 60 to 90 GHz. The transmission medium used is integrated finline which is potentially cheap to produce and has lower loss than micros trip while remaining compatible with beam lead diodes. The pe