Title :
50W X-band GaN MMIC HPA: Effective power capability and transient thermal analysis
Author :
Costrini, C. ; Cetronio, A. ; Romanini, P. ; Breglio, G. ; Irace, A. ; Riccio, M.
Author_Institution :
SELEX Sist. Integrati S.p.A., Rome, Italy
Abstract :
This paper reports the performance of a two-stage X-Band MMIC GaN HPA designed for radar applications. At 20V drain voltage bias and 3dB compression point the HPA delivers more than 20W of pulsed RF power with a PAE of 35% over the 8-10.5GHz frequency range, whereas at Vds=35V the MMIC provides more than 50W and 30% of PAE, with a peak power value of 58W at 9 GHz. In order to evaluate the effective HPA power capability in a real system environment and the related thermal management issues, the HPA transient thermal response for pulsed bias conditions has been investigated by means of IR thermo-camera measurements.
Keywords :
MMIC; gallium compounds; power amplifiers; thermal management (packaging); IR thermo-camera measurement; X-band MMIC GaN HPA; frequency 8 GHz to 10.5 GHz; frequency 9 GHz; power 50 W; power 58 W; power capability; pulsed bias condition; radar application; thermal management; transient thermal analysis; Gallium nitride; HEMTs; MMICs; Performance evaluation; Radio frequency; Thermal analysis; Transient analysis; MMICs; power amplifiers; radar;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2010 European
Print_ISBN :
978-1-4244-7231-4
