Abstract:
The radio frequency (RF) performance of a III-V transistor comprised of nanowire (NW) high-electron mobility channels, grown by planar vapor-liquid-solid epitaxy in paral...Show MoreMetadata
Abstract:
The radio frequency (RF) performance of a III-V transistor comprised of nanowire (NW) high-electron mobility channels, grown by planar vapor-liquid-solid epitaxy in parallel arrays, is examined. An equivalent small-signal circuit model was used to study the contributing extrinsic and intrinsic passive elements on the NW performance as a function of bias and gate length (LG). Adequate intrinsic gain (gm/gds) ~25 with low intrinsic (Ri) and terminal resistances (RG, RS, RD) lead to an fT/f max ~ 30/78 GHz for LG = 150 nm and NW diameter ~160 nm. The gate capacitance (Cg) is extracted and ~2/3 of the total Cg is parasitic, which can be reduced with denser NW arrays. Excellent agreement between measured and modeled RF performance is achieved.
Published in: IEEE Electron Device Letters ( Volume: 36, Issue: 5, May 2015)
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- IEEE Keywords
- Index Terms
- Epitaxial ,
- Radio Frequency Performance ,
- Parasite ,
- Radiofrequency ,
- Equivalent Circuit ,
- Intrinsic Resistance ,
- Equivalent Circuit Model ,
- Mapping Bias ,
- Small-signal Model ,
- Nanowire Diameter ,
- Parallel Arrays ,
- Gate Length ,
- Gate Capacitance ,
- Intrinsic Elements ,
- Substrate Surface ,
- Gate Bias ,
- High Electron Mobility Transistors ,
- Drain Bias
- Author Keywords
- Author Free Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Epitaxial ,
- Radio Frequency Performance ,
- Parasite ,
- Radiofrequency ,
- Equivalent Circuit ,
- Intrinsic Resistance ,
- Equivalent Circuit Model ,
- Mapping Bias ,
- Small-signal Model ,
- Nanowire Diameter ,
- Parallel Arrays ,
- Gate Length ,
- Gate Capacitance ,
- Intrinsic Elements ,
- Substrate Surface ,
- Gate Bias ,
- High Electron Mobility Transistors ,
- Drain Bias
- Author Keywords
- Author Free Keywords