Abstract
We propose a new negative source degeneration resistor (NSDR) transconductor to achieve a wide continuous-tuning range gm-C filter applicable for IEEE802.11a/b/g wireless-LANs and W-CDMA. The NSDR-transconductor using a source degeneration resistor and positive feedback differential amplifier that acts as a negative resistor. This configuration enables the equivalent source degeneration resistance to be drastically increased without degrading linearity, thus resulting in a wide gm tuning. A 6th -order elliptic low-pass filter using this NSDR-transconductor exhibits a cutoff frequency (fc) tuning range of 1.5-12MHz, which is two times wider than that of conventional filters. Additionally, we introduce a new figure of merit (FoM) evaluating the basic filter performance. This filter shows 0.35 fj (FoM) in the IEEE802.11a mode, which is, to our best knowledge, the best value in the CMOS channel-select filters.
| Original language | English |
|---|---|
| Title of host publication | European Solid-State Circuits Conference |
| Pages | 449-452 |
| Number of pages | 4 |
| DOIs | |
| Publication status | Published - 2003 |
| Externally published | Yes |
| Event | 29th European Solid-State Circuits Conference, ESSCIRC 2003 - Estoril, Portugal Duration: 2003 Sep 16 → 2003 Sep 18 |
Other
| Other | 29th European Solid-State Circuits Conference, ESSCIRC 2003 |
|---|---|
| Country | Portugal |
| City | Estoril |
| Period | 03/9/16 → 03/9/18 |
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ASJC Scopus subject areas
- Hardware and Architecture
- Electrical and Electronic Engineering
Cite this
A widely tunable CMOS Gm-C filter with a negative source degeneration resistor transconductor. / Hori, Shinichi; Maeda, Tadashi; Yano, Hitoshi; Matsuno, Noriaki; Numata, Keiichi; Yoshida, Nobuhide; Takahashi, Yuji; Yamase, Tomoyuki; Walkington, Robert; Hida, Hikaru.
European Solid-State Circuits Conference. 2003. p. 449-452 1257169.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - A widely tunable CMOS Gm-C filter with a negative source degeneration resistor transconductor
AU - Hori, Shinichi
AU - Maeda, Tadashi
AU - Yano, Hitoshi
AU - Matsuno, Noriaki
AU - Numata, Keiichi
AU - Yoshida, Nobuhide
AU - Takahashi, Yuji
AU - Yamase, Tomoyuki
AU - Walkington, Robert
AU - Hida, Hikaru
PY - 2003
Y1 - 2003
N2 - We propose a new negative source degeneration resistor (NSDR) transconductor to achieve a wide continuous-tuning range gm-C filter applicable for IEEE802.11a/b/g wireless-LANs and W-CDMA. The NSDR-transconductor using a source degeneration resistor and positive feedback differential amplifier that acts as a negative resistor. This configuration enables the equivalent source degeneration resistance to be drastically increased without degrading linearity, thus resulting in a wide gm tuning. A 6th -order elliptic low-pass filter using this NSDR-transconductor exhibits a cutoff frequency (fc) tuning range of 1.5-12MHz, which is two times wider than that of conventional filters. Additionally, we introduce a new figure of merit (FoM) evaluating the basic filter performance. This filter shows 0.35 fj (FoM) in the IEEE802.11a mode, which is, to our best knowledge, the best value in the CMOS channel-select filters.
AB - We propose a new negative source degeneration resistor (NSDR) transconductor to achieve a wide continuous-tuning range gm-C filter applicable for IEEE802.11a/b/g wireless-LANs and W-CDMA. The NSDR-transconductor using a source degeneration resistor and positive feedback differential amplifier that acts as a negative resistor. This configuration enables the equivalent source degeneration resistance to be drastically increased without degrading linearity, thus resulting in a wide gm tuning. A 6th -order elliptic low-pass filter using this NSDR-transconductor exhibits a cutoff frequency (fc) tuning range of 1.5-12MHz, which is two times wider than that of conventional filters. Additionally, we introduce a new figure of merit (FoM) evaluating the basic filter performance. This filter shows 0.35 fj (FoM) in the IEEE802.11a mode, which is, to our best knowledge, the best value in the CMOS channel-select filters.
UR - http://www.scopus.com/inward/record.url?scp=20244387605&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=20244387605&partnerID=8YFLogxK
U2 - 10.1109/ESSCIRC.2003.1257169
DO - 10.1109/ESSCIRC.2003.1257169
M3 - Conference contribution
AN - SCOPUS:20244387605
SP - 449
EP - 452
BT - European Solid-State Circuits Conference
ER -