The parameters of a mass reflector combined with direct ion extraction are optimized to reduce the time-of-flight spread caused by the initial velocity distribution of ions. Under the assumption that the initial ion velocity distribution is mass independent, one can find the mass range where the spr
HEMT parameter extraction combining optimization and direct parasitic extraction
โ Scribed by S. Vandenberghe; D. Schreurs; K. Van der Zanden; G. Carchon; B. Nauwelaers; W. De Raedt
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 173 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1096-4290
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โฆ Synopsis
A new technique for high electron mobility transistor (HEMT) equivalent circuit identification is presented. The optimization problem is reformulated as an overdetermined set of equations. Thus, equations used in direct parasitic extraction can be added in a straightforward way and a measure for error propagation is available. The method is used to identify a 17-element small-signal equivalent circuit.
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An accurate and broadband method for heterojunction bipolar transistors (HBTs) small-signal model parameters is presented in this article. This method differs from previous ones by extracting the equivalent-circuit parameters without using a special test structure or global numerical optimization te
## Abstract A direct extraction method is newly developed to determine RF MOSFET model parameters using twoโport parameter equation derived from two zeroโbias equivalent circuits under common sourceโgate and sourceโdrain configurations. This method is much simpler and more accurate than conventiona