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A CMOS Low-Power Transceiver With Reconfigurable Antenna Interface for Medical Implant Applications.
- Source :
- IEEE Transactions on Microwave Theory & Techniques; 05/01/2011, Vol. 59 Issue 5, p1369-1378, 10p
- Publication Year :
- 2011
-
Abstract
- A low-power transceiver for medical implant communication service is presented. The device consists of three subsystems, which perform wake-up signal reception, data-link binary frequency-shift keying (BFSK) reception, and transmission, respectively. A common antenna interface is reused in the three subsystems, reducing circuit complexity and number of external components. Super-regenerative architecture is used for wake-up reception, and gm-boosted common-gate stages are used to optimize receiver (RX) performance with low power consumption. The transmitter employs an all-digital frequency-locked loop to directly drive a class AB power amplifier. The transmitter can alternatively use an injection-locked power oscillator for lower bit rates and power consumption. The integrated circuit is designed and fabricated on a 0.18-\mu\m CMOS process. The wake-up RX achieves a -80-dBm sensitivity for a 50-kb/s signal and a 280-\mu\W dissipation. The BFSK RX achieves a -97-dBm sensitivity for a 75-kb/s signal and a 2-mW power consumption. Finally, the transmitter achieves an output power of -5 dBm for a power consumption of 2.9 mW. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 59
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 60516352
- Full Text :
- https://doi.org/10.1109/TMTT.2011.2116036