Title :
An S-Band Image Rejection Receiver Front-End Incorporating GaAs MMICs
Author :
Beech, G. ; Suckling, C.W. ; Suffolk, J.R.
Author_Institution :
Plessey Research (Caswell) Ltd., Casewell, Towcester, Northants., U.K.
Abstract :
An S-band image rejection receiver front-end has been designed, using GaAs MMICs to provide all the necessary functions up to, and including, the mixers. The receiver system incorporates the following GaAs MMICs: lownoise amplifier, in-phase signal splitter, quadrature local oscillator splitter, passive routing chip and dual-channel mixer. The mixer chip is novel in that a single-gate FET is used in conjunction with a passive 3 dB RF/LO-combiner. The design and performance of these circuits are discussed in the paper, together with measured results for complete receiver front-ends using these circuits.
Keywords :
Circuits; FETs; Gallium arsenide; Image converters; Local oscillators; MMICs; Radio frequency; Radiofrequency amplifiers; Routing; Semiconductor device measurement;
Conference_Titel :
Microwave Conference, 1985. 15th European
Conference_Location :
Paris, France
DOI :
10.1109/EUMA.1985.333611
