Lo, C.-M.C.-M.LoChao, S.-F.S.-F.ChaoChang, C.-C.C.-C.ChangHUEI WANG2020-06-042020-06-042007https://www.scopus.com/inward/record.uri?eid=2-s2.0-41549138787&doi=10.1109%2fEMICC.2006.282653&partnerID=40&md5=2fe0be47ac6a76e5277ae495d00fa90fThis paper presents the design and implementation of a 5-6 GHz CMOS variable-gain low noise amplifier (VGLNA) for IEEE 802.11a WLAN application, fabricated on TSMC 0.18-μm 1P6M standard CMOS process. In this design, miniature chip size and wide gain-control range are achieved by using helix-stacked inductors and current steering technology, respectively. This VGLNA exhibits a noise figure of 3.1 dB, small signal gain of 19 dB, and IIP3 of -9 dBm while in its high gain mode. A gain of -19 dB with IIP3 of -4 dBm were measured while switching into its low gain mode. The chip size is only 0.56 mm2. © 2006 EuMA.Helix inductor; LNA; Variable gainconference paper10.1109/EMICC.2006.2826532-s2.0-41549138787