Discrete-Time Receiver Front-End for Remote Healthcare Applications
Date Issued
2011
Date
2011
Author(s)
Hsu, Ming-Yeh
Abstract
Thanks to semiconductor and mobile technology developments, device size and power consumption keep scaling down. More and more functions are integrated into one device now. Realizing a remote healthcare system on a single chip is no longer a fantasy. One of most important devices in a remote healthcare system is wireless receiver, which is responsible to deal with the received vital data between doctors and patients. Just like most portable devices, power consumption is always a major design concern. Thus, this thesis will focus on the low power wireless receiver design.
In the low noise amplifier design, a dual-path noise-cancelling architecture is proposed to achieve low power consumption and high reliability simultaneously. The dual-path noise-cancelling low noise amplifier utilizes the noise-cancelling architecture combined with the gm-boosting technique, which achieves 10dB single-ended forward gain, 3.7dB noise figure and 8dBm input 3rd-order intercept point with only 1.2mW core power consumption and a single 1.0V supply voltage. The dual-path noise cancelling low noise amplifier also exhibits excellences of noise-cancelling architectures, such as balance- unbalance transformation and 1/gm matching.
Furthermore, the discrete-time receiver architecture is adopted. The subsampling filter is proposed to downconvert, filter and discretize signal simultaneously. Whole receiver front-end achieves 11.8dB single-ended conversion gain with buffer loss, 26.7dB noise figure with buffer noise, and -15dBm 3rd-order intercept point with only 3.8mW core power consumption and a single 1.0V supply voltage.
Subjects
Discrete-time receiver
wireless receiver
remote healthcare
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-100-R97943109-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):e01dd3da59d76cf906e76f045f09a23b