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Portable Thermoacoustic Imaging for Biometric Authentication using a 37.3 dBm peak Psat 4.9 GHz Power Amplifier in 55nm BiCMOS
- Source :
- 2021 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).
- Publication Year :
- 2021
- Publisher :
- IEEE, 2021.
-
Abstract
- Handheld microwave thermoacoustic imaging (TA) can be used to image subcutaneous vasculature for biometric authentication and to monitor blood-vessel health, but the system requires a compact silicon microwave power amplifier (PA) with peak output power on the order of 10 W to be portable, affordable, and ubiquitous. This work presents a 55nm BiCMOS 4.9 GHz PA with 37.3 dBm peak output power that operates at a pulse width of 50 ns - $2\ \mu\mathrm{s}$ for a duty cycle of 0.025 - 1%. The PA serves as the transmitter in a microwave TA system, which generates the first known TA images of tissue phantoms using a compact transmitter built on a silicon substrate.
Details
- Database :
- OpenAIRE
- Journal :
- 2021 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
- Accession number :
- edsair.doi...........71b18e60b4697eb1ca946d4a4faf7010