A BROADBAND TRAKING YIG- TUNED MIXER SPECI'RUMANALYZER FOR A StATE-OF-THE-ART Rohnert Hassan Tanbakuchi Hewlett Packard Park. California 95401 ABSTRACf A switched. YIG-tuned Filter/mixer/discriminator has been developed For a microwave spectrum analyzer to eliminate tuning problems associated with magnetically tuned Filters. Such problems arise From nonlinear hysteresis and eddy current de

COMPONENTS FOR A SMALL SIS MIXER ARRAY AT 350 GHz + A. van Ardenne*. L.J. van der Ree* and S. Davies ABSTRACT Prototype components for a triple beam linear mixer array operating around 350 GHz have been developed. Performance results of these are presented and the overall configuration is described. The array is to operate in a newly finished telescope for (sub)millimeter wave astronomy. 

LOW-NoISE HEMT bY MOCVD FOR SATELLITE RECEPTION K. Tanaka, H. Suzuki, K. Togashi, H. Takakuwa, S. Tsurumaru . and Y. Kato ABSTRACT AlGaAs/GaAs HEMTs for microwave applications have been MOCVD (Metal Organic Chemical Vapor Deposition). The HEMTs described in this paper, having gate lengths of 0.5 microns and gate widths of 200 and 300 microns, have displayed low noise figure, high reliabi

A NOVEL METHOD FOR CALCULATING THE NOISE FIGURE OF MICROWAVE MESFET MIXERS * ** J. Dreifuss *+, A. Madjar and A. Bar-Lev ABSTRACT A new computer analysis method is presented by which the noise contributions of the various noise sources within a MESFET mixer can be determined and its overall single sideband and double sideband noise figure and noise temperature calculated. The method utilizes a fr

INTEGRATED APPLICATIONS SLOT LINE ANTENNA WITH SIS MIXER FOR FOCAL PLANE IMAGING R 'IC h ar d Murowlns ' I k '+ , A n d ers Ska 1 are, ++, Joaklm ++ Johansson, Erik Kollberg ++ ABSTRACT Recently, the possibility of constructing millimeter wave imaging array receivers for use in radio astronomy has excited much interest, In this paper, we present results obtained to date in effor

A SELF-OSCILLATING SINGLE GATE MESFET X-BAND MIXER A. Elias Fuste * , J. Terradas Busquets ** ,E. de 10s Reyes Davo * ABSTRACT The non1inear properties of GaAs MESFET can be used oscillating mixers. This paper describes a new single-gate xer of this kind built on a microstrip circuit, its design the results obtained. to implement se1fMESFET X-Band mi constraints and 

GaAs MMIC YIELD EVALUATION M.W. Geen, R.F.B. Conlon, B.J. Buck, R.W.W. Charlton+, J.A. Jenkins, ABSTRACT The results of a yield evaluation programme are described in which prime yield determining factors affecting MMIC production were examthe first A two-stage S-band low noise amplifier vehicles. Results will be stages from initial process ined. This is such exercise reported on a major

ACTIVE FILTERS FOR MMICS Michael Healy, Roger D. Pollard, Christopher M. Snowdent ABSTRACT Improved design and implementation techniques are proposed for microwave active transversal filters. The compact configuration is achieved by using only a single MESFET to produce the required gain and phase reversal. The realization is appropriate to discrete forms and, more importantly, to MMICs. 

A MINIATURE 4 BIT OCTAVE BANDWIDTH SWITCHED FILTER PHASE SHIFTER GaAs MMIC A.A. Lane, M.W. Geen ABSTRACT This paper describes the design of a 4 bit phase shifter GaAs MMIC for operation over a 4-8 GHz bandwidth. Phase shifting is achieved by using GaAs MESFETs to switch the circuit transfer function from high pass to low pass and vice versa. In order to achieve small chip size and im

RADIATION FROM VIA-HOLES IN MMICs C R Brewitt-Taylor* ABSTRACT A calculation is made of the radiation from a via-hole current in a micros trip circuit, yielding formulae for the radiation resistance and mutual coupling. It is found that the effects are considerably greater than for a similar length of microstrip track.