Abstract
A power detector integrated with a preamplifier is fabricated using a 250-nm InP double-heterojunction bipolar transistor technology for 280-GHz operation. The input RF signal to the detector is modulated at 20 kHz to decouple the output dc voltage from 1/f noise. The integrated receiver detector consists of a two-way balun, a differential preamplifier, a power detector. Breakout circuits of a standalone power detector and a test amplifier have been independently characterized. The test amplifier shows a gain of 18.1 dB and noise figure of 14 dB. The responsivity and noise equivalent power of the detector improve from 4.5 to 350 kV/W and from 10 to 0.13 pW/Hz0.5, respectively, at 280 GHz, with the addition of the preamplifier. The performance enhancements due to the preamplifier are in close agreement with the results predicted by advanced design system simulations.
Original language | English |
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Article number | 7805163 |
Pages (from-to) | 209-217 |
Number of pages | 9 |
Journal | IEEE Transactions on Terahertz Science and Technology |
Volume | 7 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2017 Mar |
Keywords
- InP HBT
- preamplified detector
- terahertz detector
- terahertz receiver
ASJC Scopus subject areas
- Radiation
- Electrical and Electronic Engineering