Abstract
High performance submicron In0.49Ga0.51P/In0.15Ga0.85As doped-channel heterostructure field effect transistors (HFETs) have been developed and characterized. In order to achieve a high uniformity of device characteristics crossing the wafer, BCl3 +CHF3 reactive ion etching technology in gate-recessed process is applied to fabricate the InGaP/InGaAs doped-channel FETs. The unity current gain cut-off frequency (fT), maximum frequency of oscillation (fmax), and threshold voltage have been investigated versus the gate-length. The improved microwave performance in smaller gate-length devices is mainly associated with the reduction of the input capacitance. The 0.2 × 200-μm2 gate-dimension DCFET exhibits a saturated Pout of 18.9 dBm, a power density of 388 mW/mm, a PAE of 35%, and an associated gain of 14 dB at 2.4 GHz.
Original language | English |
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Pages (from-to) | 1555-1558 |
Number of pages | 4 |
Journal | IEEE Transactions on Electron Devices |
Volume | 50 |
Issue number | 6 |
DOIs | |
State | Published - 06 2003 |
Externally published | Yes |
Keywords
- Doped-channel FET
- Power performance
- Reactive ion etching
- Submicron