Abstract
A new method for determining the four noise parameters of pseudomorphic high electron-mobility transistors (pHEMT) based on 50-Ω noise measurement system without a microwave tuner is presented. The noise parameters are determined based on the noise correlation matrix technique by fitting the measured noise figure of the active device. On-wafer experimental verification up to 26 GHz is presented and a comparison with a tuner-based method is given. The scaling rules for noise parameters have also been determined. Good agreement is obtained between simulated and measured results for 2 × 20 μm, 2 × 40 μm, and 2 × 60 μm gatewidth (number of gate fingers × unit gatewidth) 0.25-μm double-heterojunction δ-doped pHEMTs.
| Original language | English |
|---|---|
| Pages (from-to) | 2079-2089 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Microwave Theory and Techniques |
| Volume | 51 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2003 |
| Externally published | Yes |
Keywords
- Correlation noise matrix
- Noise measurement
- Noise parameter