Title :
CAD oriented design methods of frequency multipliers. Application to a millimeterwave MMIC PHEMT tripler and a microwave HBT doubler
Author :
Thibaud, B. ; Barataud, D. ; Campovecchio, M. ; Nebus, J.M. ; Tranchant, S. ; Quentin, P. ; Floriot, D.
Author_Institution :
IRCOM, Limoges Univ., France
Abstract :
Two specific design methods of frequency multipliers are presented. The first one is CAD oriented and based on the "Substitute Generator Technique" using nonlinear device models. The second one is based on a novel time-domain load-pull setup to measure and optimize voltage/current waveforms at both ports of frequency multipliers. These complementary design approaches allow to quickly and accurately determine all the optimum operating conditions for any frequency multiplier. The first design methodology is applied to the optimization of a broadband (34.5-39) GHz PHEMT MMIC tripler integrated into a transceiver manufactured at the UMS foundry. In the same way, the time-domain load-pull characterization is applied to the optimization of a S-band HBT doubler.
Keywords :
CAD; HEMT integrated circuits; MMIC frequency convertors; frequency multipliers; heterojunction bipolar transistors; microwave bipolar transistors; microwave frequency convertors; millimetre wave frequency convertors; 34.5 to 39 GHz; CAD; S-band; Substitute Generator Technique; design; frequency multiplier; microwave HBT doubler; millimeter-wave MMIC PHEMT tripler; nonlinear device model; time-domain load-pull characteristics; transceiver; Current measurement; Design automation; Design methodology; Design optimization; Frequency measurement; MMICs; PHEMTs; Time domain analysis; Transceivers; Voltage measurement;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.780309
