Title :
38/76 GHz GaAs PHEMT Frequency Doublers in CPW Technology
Author :
Roca, Y.Campos ; Marsetz, W. ; Barciela, M. Fernández ; Verweyen, L. ; Neumann, M. ; Demmler, M. ; Massler, H. ; Haydl, W.H. ; Francos, M. C Currás ; Sànchez, E. ; Hülsmann, A. ; Schlechtweg, M.
Author_Institution :
Universidade de Vigo, E.T.S.I.Telecomunicación, Campus Universitario, 36200, Vigo, Spain. Phone: +34 986 - 81 3756 Fax: +34 986 - 81 2116 E-mail: yolanda@tsc.uvigo.es
Abstract :
This paper presents the design and performance of a single-ended and a balanced MMIC frequency doublers from 38 to 76 GHz, realized in CPW technology using 0.15-¿m PM-HEMTs on GaAs. These circuits have demonstrated an output power of nearly 10 dBm for a 16-dBm 38-GHz input signal. Their compact size and good power performance makes them attractive candidates for application in FMCW collision-avoidance radar systems, eliminating the need for W-band amplifier stages. A table-based large-signal HEMT model has been used successfully for the design of both circuits, resulting in very good agreement between predicted and measured power performance.
Keywords :
Circuits; Coplanar waveguides; Frequency; Gallium arsenide; HEMTs; MMICs; PHEMTs; Power amplifiers; Power generation; Radar applications;
Conference_Titel :
Microwave Conference, 1998. 28th European
Conference_Location :
Amsterdam, Netherlands
DOI :
10.1109/EUMA.1998.337986
