Abstract
Highly scaled indium phosphide (InP) heterojunction bipolar transistor (HBT) technologies have been demonstrated with maximum frequencies of oscillation (fmax) of >1 THz and circuit operation has been extended into the lower end of the terahertz (THz) frequency band. InP HBTs offer high radio-frequency (RF) output power density, millivolt (mV) threshold uniformity, and high levels of integration. Integration with multilevel thin-film wiring permits the realization of compact and complex THz monolithic integrated circuits (TMICs). Circuit results reported from InP HBT technologies include: 200-mW power amplifiers at 210 GHz, 670-GHz amplifiers and fundamental oscillators, and fully integrated 600-GHz transmitter circuits. We review the state of the art in THz-capable InP HBT devices and integrated circuit (IC) technologies. Challenges in extending transistor bandwidth and in circuit design at THz frequencies will also be addressed.
| Original language | English |
|---|---|
| Article number | 7915698 |
| Pages (from-to) | 1051-1067 |
| Number of pages | 17 |
| Journal | Proceedings of the IEEE |
| Volume | 105 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2017 |
Keywords
- Heterojunction bipolar transistor (HBT)
- indium phosphide (InP)
- terahertz (THz)
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