IMPATT POWER AMPLIFIER FOR MICROWAVE-LINK-SYSTEM H.S. GILL ABSTRACT The paper describes an impatt amplifier with 20 dB gain and 1,6 Woutput power, which is being used in FM microwave link systems for amplification of RF-Signals. The link system is capable of transmitting 1260 speech channels or one TV signal for long haul applications from 6.4 to 8.5 GHz. A silicon double drift impatt diode is

BROADBAND POWER UP-CONVERSION GaAs FOR MICROWAVE RADIO LINKS USING A PHASE-LOCKED FET OSCILLATOR E.Burkert, K.Junger+ ABSTRACT A phase-locked GaAS FET oscillator serves as a broadband power amplifier and/at the same time, as an up-converter for the transmission of FM signals in microwave radio links. A new measurement method, using a combination of loadpull and reflection test to determi

ANALYTICAL ME'l'HODTO DESIGN OSCILLATORS WITH OPTIMAL NOISE SPECTRA USING THE BILINEAR TRANSFORMATION J.M.REBOLLAR * and J.ZAPATA ~ ABSTRACT A new method to design oavity-stabilized-oscillators is proposed. This method makes possible the calculation of the parameters of the network to be designed between the aotive device and the stabilizing oavity.The network simultaneously gets the oondition of

A Ku-BAND HYBRID-COUPLED FIN-LINE FRONT-END WITH A MIXER AND A GUNN OSCILLATOR BALANCED by G. Begemann, E. Kpodzo and A. Schlegel * ABSTRACT A simple and compact Ku-band fin-line front-end is described, which has been realized by an integrated fin-line hybrid-coupled balanced mixer and a Gunn oscillator. The front-end operates over a 30 per cent frequency band around 14 GHz with a convers

~lE USE OF BARITT DIODES IN SELF-OSCILLATING MIXERS Z.N.Kassab and P.W.Webb ABSTRACT Baritt diodes were used to construct single sideband X and C - band wave- guide mixers which gave conversion gain up to an IF frequency of 200 MHz. Within this band gain variation of 4 to 6 dB and noise figures of 11 to 14 dB were measured. The microwave circuit could also be used as a reflection amplifier

NUMERICAL ANALYSIS OF INFLUENCE DIODES OF C-V AND I-V CHARACTERISTICS OF SCHOTTKY-BARRIER ON MICROWAVE MIXER .PERFORMANCE J. Puchalski I, A. JelenskiII ABSTRACT A numerical method enabling the calculation of a universal microwave mixer circuit and optimization procedures determining the input and output impedances needed to minimize the receiver noise figure are presented. Results of calc

ANALYSIS OF A MICROWAVE CROSSBAR MIXER xx M.T.Faber x and W.K.Gwarek ABSTRACT A theory for analyzing microwave mixers with any number of diodes is briefly described. In this theory diodes have nonlinear conductance and nonlinear capacitance. Any linear embedding network is allowed. The theory has been utilized to analyze a crossbar mixer configuration. Some computed results are given and disc

A METHOD FOR MEASURING AN EQUIVALENT CIRCUIT OF WAVEGUIDE-MOUNTEDDIODES M.W.pospieszalskix and S.Weinrebxx ABSTRACT A new method of measurement of the embedding circuit and parasitics of a Schottky-barrier or p-n diode mounted in a waveguide is described. The method is unique in that no instrumentation is required other than an RF signal source, wide-range DC milliammeter, VSWRmeter and a sl

OCTAVE-BAND R.Knoechel ABSTRACT DOUBLE-BALANCED and A. Schlegel INTEGRATED FINLINE + MIXERS AT MM-WAVELENGTHS Several new circuits are reported, which make the double-balanced mixer scheme feasible at mm-wavelengths. Finline is employed, using an extremely simple slot-pattern. An operating frequency range of 10 to 40 GHz was obtained. Conversion loss for the full bandwidth is 7 + 0.5 dB with a