Abstract
We report a GaN-based broadband power amplifier using AlGaN/GaN-HEMTs, grown on sapphire substrates, as the active devices. The circuit topology used novel LCR-matching networks in a 4-way binary-Wilkinson combiner structure. The devices were flip-chip bonded onto the AlN circuit for thermal management. Using devices with 0.7-μm gate length and 4-mm gate width, a small-signal gain of 7 dB was obtained with 3-10 GHz bandwidth. The saturation power level was 8.5 W at 8 GHz, which is the highest for a power amplifier using GaN-HEMTs-on-Sapphire.
Original language | English |
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Pages (from-to) | 959-962 |
Number of pages | 4 |
Journal | IEEE MTT-S International Microwave Symposium Digest |
Volume | 2 |
Publication status | Published - 11 Dec 2000 |
Externally published | Yes |
Event | Proceedings of the 1999 IEEE MTT-S International Microwave Symposium - Boson, MA, USA Duration: 11 Jun 2000 → 16 Jun 2000 |