Abstract
A new dual-band, 2.4 and 5.2 GHz, combined LNA, which can operate at 1 V supply only, for WLAN application is presented. The switched transistor technique is used in the LNA. It could match the input port in two frequency bands and reduce one on-chip spiral inductor usage compared with [1, 2]. Theoretical analysis and transistor level simulation results using 0.18 μm CMOS process from Chartered Semiconductor are presented to demonstrate this idea.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
L. Zhenbiao, R. Quintal, and K.K. O, “A dual-band CMOS front-end with two gain modes for wireless LAN applications.” IEEE Journal of Solid-State Circuits, vol. 39, no. 11, pp. 2069–2073, Nov. 2004.
H. Hashemi and A. Hajimiri, “Concurrent dual-band CMOS low noise amplifiers and receiver architectures.” Symposium of Digest of Technical Papers, 2001 VLSI Circuits, on 14–16 June 2001, pp. 247–250.
G. Yongmin and K. Mayaram, “A comparative analysis of CMOS low noise amplifiers for RF applications,” in Proceedings of the 1988 IEEE International Symposium on Circuits and Systems, 1998, ISCAS ’98, vol. 4, pp. 349–352, 31 May–3 June 1998.
S. Yim and K.K. O, “Demonstration of a switched resonator concept in a dual-band monolithic CMOS LC-tuned VCO,” in Proc. IEEE Custom Integrated Circuits Conf., 2001, pp. 205–208.
T.K.K. Tsang and M.N. El-Gamal, “Gain and frequency controllable sub-1 V 5.8 GHz CMOS LNA,” IEEE International Symposium on Circuits and Systems, 2002, ISCAS 2002, vol. 4, pp. IV-795–IV-794, 26–29 May, 2002.
Author information
Authors and Affiliations
Corresponding author
Additional information
Wang-Chi Cheng received his B.Eng., M.Phil., and Ph.D. degrees in Electronic Engineering of the Chinese University of Hong Kong (CUHK) in 1999, 2001 and 2004. His research achievements during M.Phil. and Ph.D. studies were in the field of low voltage receiver front-end circuits design with CMOS technology. He joined the Electrical and Electronic Engineering department of Nanyang Technological University (NTU), Singapore, in May 2005 as a Research Fellow. Now, he is a Senior Engineer in charge of the UWB transceiver IC design in Hong Kong Applied Science and Technology Research Institute (ASTRI). His current research interests include 802.11 A/B WLAN and UWB transceiver design. He is also a paper reviewer of the IEEE Microwave and Wireless Components Letters.
Jian-Guo Ma received his B.Sc. and M.Sc. in 1982 and 1988 respectively with honors from Lanzhou university of Chain, and Doctoral Degree in Engineering from Gerhard-Mercator University of Germany in 1996. From Jan. 1982 to March 1991, he has worked with Lanzhou university of China on RF & Microwave Engineering. Before he joined Nanyang Technological University in 1997, he was with Technical University of Nova Scotia, Canada. Now, he is a Professor of the University of Electronic Science and Technology of China. His research interests are: RFIC designs for wireless applications; RF characterization and modeling of semiconductor devices; RF interconnects and packaging; SoC and Applications; EMC/EMI in RFICs. He has published more than 150 technical papers and two books in above mentioned areas. He holds 6 patents in CMOS RFICs. He is now Associate Editor for IEEE Microwave and Wireless Components Letters.
Kiat-Seng Yeo received his B.E. (Hons.) (Elect) in 1993, and Ph.D. (Elect. Eng.) in 1996 both from Nanyang Technological University, Singapore. He joined the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore as a Lecturer in 1996, and became an Assistant Professor and an Associate Professor in 1999 and 2002, respectively. Professor Yeo provides consulting to statutory boards and multinational corporations in the areas of semiconductor devices and electronic circuit design. He has been extensively involved in the modeling and fabrication of small MOS/Bipolar integrated technologies for the last ten years. His research interests also include the design of new circuits and systems (based on scaled technologies) for low-voltage low-power applications; radio frequency integrated circuit (RF IC) design; integrated circuit design of BiCMOS/CMOS multiple-valued logic circuits, domino logic, and memories; and device characterization of deep submicrometer MOSFETs.
Manh-Anh Do obtained his B.E. (Hons) (Elect.) in 1973, and Ph.D. (Elect. Eng.) in 1977 both from University of Canterbury, New Zealand. Between 1977 and 1989, he held various positions including: R & D engineer and production manager at Radio Engineering Ltd., research scientist at Fisheries Research Centre, New Zealand, and senior lecturer at National University of Singapore. He joined the School of Electrical and Electronic Engineering, Nanyang Technological University (NTU), Singapore as a senior lecturer in 1989, and obtained the Associate Professorship in 1996 and the Professorship in 2001. He has been a consultant for many projects in the Singapore electronic industry, and was the principal consultant for the design, testing and implementation of the $200 million Electronic Road Pricing (ERP) island-wide project in Singapore, from 1990 to 2001. His current research is on digital and mobile communications, RF IC design, mixed-signal circuits and intelligent transport systems. Before that, he specialsed in sonar designing, biomedical engineering and signal processing. Since 1995, he has been Head of Division of Circuits and Systems, School of EEE, NTU. He is a Fellow of IEE, UK, a Chartered Engineer (UK) and a Professional Engineer (Singapore).
Rights and permissions
About this article
Cite this article
Cheng, WC., Ma, JG., Yeo, KS. et al. A 1 V switchable CMOS LNA for 802.11A/B WLAN applications. Analog Integr Circ Sig Process 48, 181–184 (2006). https://doi.org/10.1007/s10470-006-7605-z
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10470-006-7605-z