Bo-Wu WANG, Wei-Hua YU, Yan-Fei HOU, Qin YU, Yan SUN, Wei CHENG, Ming ZHOU. A 33~170 GHz cascode amplifier based on InP DHBT technology[J]. Journal of Infrared and Millimeter Waves, 2023, 42(2): 197
- Journal of Infrared and Millimeter Waves
- Vol. 42, Issue 2, 197 (2023)
Fig. 1. The fT and fmaxof the transistor
Fig. 2. Schematic cross-sectional view of (a) multilayer interconnect, and (b) thin-film microstrip lines
Fig. 3. Block diagram of the typical cascode amplifier
Fig. 4. Circuit topology for the wide band cascode amplifier
Fig. 5. Impedance matching Smith chart and the network schematic
Fig. 6. Chip photograph of the cascode amplifier MMIC. Size：1.0 mm × 0.8 mm
Fig. 7. Measured and simulated S-parameters of the broadband amplifier MMIC On-wafer bias：Vb1=1.5 V，Vb2/Vc=2.5 V
Fig. 8. Output power measured results
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Table 1. Layer structure of the InGaAs/InP DHBT
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Table 2. State-of-the-art of ultra-broadband amplifier
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