The thesis is composed of two topics: the differential to single voltage buffer amplifier used in DDFS designs and a wireless duplex modulation circuit with a single coil for bio-implants.
A voltage buffer implemented in 2P4M 0.35 £gm CMOS process, which is addressed in first part of this thesis, can amplify the small sinusoid outputs from DDFS (direct digital frequency synthesizer, DDFS), while convert the differential output into a single-end output. Not only can it amplify signal by a pre-defined multiple, but also reduce the common mode noise coupled from DDFS.
A wireless duplex modulation circuit using a single coil for biomedical implantable systems is disclosed in the second part of this thesis. It enables full duplex communication between the external controller and the implants at same time by a wireless a RF transmission interface. Since the proposed duplex design employs a single coil, the volume of the implanted device is drastically reduced.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0828109-185410 |
| Date | 28 August 2009 |
| Creators | Yao, Tuo-yu |
| Contributors | Shu-min Li, Chih-Peng Li, Chua-Chin Wang, Po-ming Lee |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828109-185410 |
| Rights | not_available, Copyright information available at source archive |
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