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This paper describes design and analysis of monolithic triple-stacked power amplifiers (PAs) in 2-µm / 0.5-µm GaAs HBT-HEMT process. The proposed PAs are designed using both heterojunction bipolar transistor (HBT) and high electron-mobility transistor (HEMT). Based on a common-emitter (CE) configuration of HBT with stacked common-gate (CG) configuration of HEMTs or stacked common-base (CB) configuration of HBT as the third-stacked transistor, better power performances with good PAEs can be achieved as compared with the CE or common-source (CS) amplifier due to high output stacking impedance. The bandwidth with HEMT/CG configuration as the third-stacked transistor is investigated. The proposed stacked PAs demonstrate a maximum output powers of 31.7 dBm, a compact chip size of within 1.6 × 1 mm2, and a maximum power added efficiency (PAE) of 38.3% at 5 GHz.
|Journal||IEICE Electronics Express|
|State||Published - 2020|
- Heterojunction bipolar transistor (HBT)
- High electron-mobility transistor (HEMT)
- Microwave circuits
- Monolithic microwave integrated circuit (MMIC)
- Power amplifier (PA)
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Research on W-Band Radar Frontend Integrated Circuits for Miniature Unmanned Aerial Vehicle Applications(3/3)
1/08/19 → 31/01/21