Research Article
The Design and Thermal Reliability Analysis of a High-Efficiency K-Band MMIC Medium-Power Amplifier with Multiharmonic Matching
Table 2
The efficiency comparison of K-band PAs.
| Reference | Process/topology | Frequency | | PAE | Chip size |
| [11] | GaAs pHEMT/4 stages | 17–26 GHz | 24 dBm | 15% | 4.20 mm × 1.80 mm |
| [12] | GaAs pHEMT/4 stages | 18–35 GHz | 23.5 dBm | 11% | 4.70 mm × 1.90 mm | 35–40 GHz | 22 dBm | 8% | GaAs pHEMT/6 stages | 17–36 GHz | 23 dBm | 8% | NA | 36–40 GHz | 22.5 dBm | 14% |
| [13] | GaAs pHEMT/2 stages | 24–28 GHz | 19.8 dBm | 19.8% | 1.44 mm × 2.45 mm |
| [14] | GaAs pHEMT/4 stages | 17–35 GHz | 22 dBm | 30% | 1.50 mm × 1.00 mm |
| [15] | GaAs pHEMT/3 stages | 20–30 GHz | 22 dBm | 21% | 1.44 mm × 2.45 mm |
| This work | GaAs pHEMT/4 stages | 25–27 GHz | 20 dBm | 40% | 2.20 mm × 1.20 mm |
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