Title
A 1 Mu S Settling Time Fully Digital Agc System With A 1 Ghz-Bandwidth Variable Gain Amplifier For Wigig/Ieee802.11ad Multi-Gigabit Wireless Transceivers
Abstract
This paper presents an automatic gain control (AGC) system suitable for 60 GHz direct conversion receivers. By using a two step gain control algorithm with high-pass filter cutoff frequency switching, the proposed AGC system realizes fast settling time and wide dynamic range simultaneously. The paper also discusses wide-bandwidth variable gain amplifier (VGA) design. By introducing digitally-controlled resistors and gain flattening capacitors, the proposed VGA realizes wide gain range while compensating gain variations due to parasitic capacitance of MOS switches. The AGC system is implemented in a transceiver chipset where RFIC and BBIC are fabricated in 90 nm CMOS and 40 nm CMOS respectively. The measurement shows excellent dynamic range of 47 dB with +/-1 dB gain accuracy within 1 mu s settling time, which satisfies the stringent requirements of the MEE802.11ad standard.
Year
DOI
Venue
2013
10.1587/transele.E96.C.1301
IEICE TRANSACTIONS ON ELECTRONICS
Keywords
DocType
Volume
variable gain amplifier (VGA), automatic gain control (AGC), digitally-controlled, wide-bandwidth, wide gain range, CMOS, 60 GHz
Journal
E96C
Issue
ISSN
Citations 
10
1745-1353
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Ryo Kitamura100.34
Koichiro Tanaka200.34
Tadashi Morita300.34
Takayuki Tsukizawa400.34
Koji Takinami500.34
Noriaki Saito600.34