Abstract
A 30-MHz-2.4-GHz complementary metal oxide semiconductor (CMOS) receiver with an integrated tunable RF filter and a dynamic-range-scalable energy detector for both white-space and interference-level sensing in cognitive radio systems is reported. The second-order RF filter has only two stacked transistors, and its use, in combination with a subsequent harmonic rejection mixer, results in wideband interference rejection. The energy detector with programmable rectifiers provides dynamic-range (DR) scalability, enabling shared use for white-space/interference-level detection and automatic gain control. A prototype chip, fabricated using 90-nm CMOS technology, achieved over 42-dB harmonic rejection including 7th-order component without any external device, a 67-dB gain, a 5-8-dB noise figure, a $-$11-dBm in-band third-order intercept point, and a $+$38-dBm second-order intercept point while drawing only 25-37 mA from a 1.2-V power supply. Multi-resolution DR-scalable spectrum sensing with a 0.2-30-MHz detection bandwidth, $-$83-dBm minimum sensitivity, and a 29-48-dB DR was demonstrated.
| Original language | English |
|---|---|
| Article number | 6155617 |
| Pages (from-to) | 1084-1093 |
| Number of pages | 10 |
| Journal | IEEE Journal of Solid-State Circuits |
| Volume | 47 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2012 May |
| Externally published | Yes |
Fingerprint
Keywords
- Cognitive radio
- energy detector
- harmonic rejection mixer
- RF filter
- RSSI
- spectrum sensing
- tunable filter
- wideband receiver
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
A 30-MHz-2.4-GHz CMOS receiver with integrated RF filter and dynamic-range-scalable energy detector for cognitive radio systems. / Kitsunezuka, Masaki; Kodama, Hiroshi; Oshima, Naoki; Kunihiro, Kazuaki; Maeda, Tadashi; Fukaishi, Muneo.
In: IEEE Journal of Solid-State Circuits, Vol. 47, No. 5, 6155617, 05.2012, p. 1084-1093.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A 30-MHz-2.4-GHz CMOS receiver with integrated RF filter and dynamic-range-scalable energy detector for cognitive radio systems
AU - Kitsunezuka, Masaki
AU - Kodama, Hiroshi
AU - Oshima, Naoki
AU - Kunihiro, Kazuaki
AU - Maeda, Tadashi
AU - Fukaishi, Muneo
PY - 2012/5
Y1 - 2012/5
N2 - A 30-MHz-2.4-GHz complementary metal oxide semiconductor (CMOS) receiver with an integrated tunable RF filter and a dynamic-range-scalable energy detector for both white-space and interference-level sensing in cognitive radio systems is reported. The second-order RF filter has only two stacked transistors, and its use, in combination with a subsequent harmonic rejection mixer, results in wideband interference rejection. The energy detector with programmable rectifiers provides dynamic-range (DR) scalability, enabling shared use for white-space/interference-level detection and automatic gain control. A prototype chip, fabricated using 90-nm CMOS technology, achieved over 42-dB harmonic rejection including 7th-order component without any external device, a 67-dB gain, a 5-8-dB noise figure, a $-$11-dBm in-band third-order intercept point, and a $+$38-dBm second-order intercept point while drawing only 25-37 mA from a 1.2-V power supply. Multi-resolution DR-scalable spectrum sensing with a 0.2-30-MHz detection bandwidth, $-$83-dBm minimum sensitivity, and a 29-48-dB DR was demonstrated.
AB - A 30-MHz-2.4-GHz complementary metal oxide semiconductor (CMOS) receiver with an integrated tunable RF filter and a dynamic-range-scalable energy detector for both white-space and interference-level sensing in cognitive radio systems is reported. The second-order RF filter has only two stacked transistors, and its use, in combination with a subsequent harmonic rejection mixer, results in wideband interference rejection. The energy detector with programmable rectifiers provides dynamic-range (DR) scalability, enabling shared use for white-space/interference-level detection and automatic gain control. A prototype chip, fabricated using 90-nm CMOS technology, achieved over 42-dB harmonic rejection including 7th-order component without any external device, a 67-dB gain, a 5-8-dB noise figure, a $-$11-dBm in-band third-order intercept point, and a $+$38-dBm second-order intercept point while drawing only 25-37 mA from a 1.2-V power supply. Multi-resolution DR-scalable spectrum sensing with a 0.2-30-MHz detection bandwidth, $-$83-dBm minimum sensitivity, and a 29-48-dB DR was demonstrated.
KW - Cognitive radio
KW - energy detector
KW - harmonic rejection mixer
KW - RF filter
KW - RSSI
KW - spectrum sensing
KW - tunable filter
KW - wideband receiver
UR - http://www.scopus.com/inward/record.url?scp=84860476535&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860476535&partnerID=8YFLogxK
U2 - 10.1109/JSSC.2012.2185531
DO - 10.1109/JSSC.2012.2185531
M3 - Article
VL - 47
SP - 1084
EP - 1093
JO - IEEE Journal of Solid-State Circuits
JF - IEEE Journal of Solid-State Circuits
SN - 0018-9200
IS - 5
M1 - 6155617
ER -