Name
Title | ||
|---|---|---|
A CMOS MedRadio Transceiver With Supply-Modulated Power Saving Technique for an Implantable Brain–Machine Interface System |
Abstract | ||
|---|---|---|
A MedRadio 413–419-MHz inductorless transceiver (TRX) for an implantable brain–machine interface (BMI) in a 180 nm-CMOS process is presented. Occupying 5.29 mm
<sup xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>
of die area (including pad ring), this on–off keying (OOK) TRX employs a non-coherent direct-detection receiver (RX), which exhibits a measured in-band noise figure (NF) of 4.9 dB and
<inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$S_{11}$ </tex-math></inline-formula>
of −13.5 dB. An event-driven supply modulation (EDSM) technique is introduced to dramatically lower the RX power consumption. Incorporating an adaptive feedback loop, this RX consumes 42-/92-
<inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mu \text{W}$ </tex-math></inline-formula>
power from 1.8-V supply at 1/10-kbps data rates, achieving −79/−74-dBm sensitivities for 0.1% bit error rate (BER). The TX employs a current starved ring oscillator with an automatic frequency calibration loop, covering 9% supply voltage variation and 15 °C–78 °C temperature range that guarantees operation within the emission mask. The direct-modulation TX achieves 14% efficiency for a random OOK data sequence at −4-dBm output power. Wireless testing over a 350-cm distance accounting for bio-signal data transfer, multi-user coexistence, and
<italic xmlns:xlink="http://www.w3.org/1999/xlink">in vitro</italic>
phantom measurement results is demonstrated. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/JSSC.2019.2899521 | IEEE Journal of Solid-State Circuits |
Keywords | Field | DocType |
Wireless communication,Magnetic resonance imaging,Wireless sensor networks,Power demand,Modulation,Transceivers,Sensitivity | Ring oscillator,Transceiver,Data transmission,Computer science,Noise figure,Feedback loop,CMOS,Electronic engineering,Modulation,Bit error rate | Journal |
Volume | Issue | ISSN |
54 | 6 | 0018-9200 |
Citations | PageRank | References |
4 | 0.42 | 0 |
Authors | ||
7 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Mao-Cheng Lee | 1 | 5 | 1.12 |
| alireza karimi bidhendi | 2 | 11 | 2.97 |
| Omid Malekzadeh-Arasteh | 3 | 7 | 2.87 |
| Po T. Wang | 4 | 31 | 9.00 |
| An H. Do | 5 | 32 | 11.35 |
| Zoran Nenadic | 6 | 227 | 29.91 |
| Payam Heydari | 7 | 649 | 75.49 |