| Autor: |
Alfonso Cesar Albason, A. S. L. Lou, Danny Wen-Yaw Chung, A. A. S. Hu |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
IFMBE Proceedings ISBN: 9783540928409 |
| DOI: |
10.1007/978-3-540-92841-6_103 |
| Popis: |
A novel capacitor-less amplitude demodulation receiver architecture is used in the design of a downlink transceiver for a wireless implantable glucose sensing biosystem. The transceiver system is composed of a high efficiency class E power amplifier utilized as an external transmitter and an implantable data detection receiver, communicating through an inductive link. Amplitude shift keying digital scheme is used to externally modulate the 2 MHz carrier frequency at a data rate of 2 kbps. Transmitter spectral power was measured at 1.51 mW during transmission in air and data was successfully decoded at an effective distance of 3 cm between antennas. Implantable receiver off-chip antenna is implemented using a ferrite core, wire wound coil. A low power, low area consumption implantable receiver module is produced in the research with internal receiver core area measuring at 64.8µm by 55.9µm. Average power dissipation is 1.15 mW at a 3.3V single rail power supply, the lowest to date. Power consumption was measured at both 10 pF and 100 pF load capacitances. Implantable receiver chip was designed and implemented using a TSMC 0.35µm mixed-signal 2P4M 3.3V/5V standard CMOS process. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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