A CMOS 802.11b wireless LAN transceiver

Abstract

Absfructs -This paper describes a 2.4 GHz 0.25 pn CMOS RF transceiver chip that has the potential to he used in place of a SiGe transceiver chip used in an 802.llh radio. The 802.11b radio with the CMOS transceiver was tested along with the radio with SiGe transceiver. CMOS radio transmits RMS power of 13.1 dBm at antenna output while the SiGe radio has 13.2 dBm output power. CMOS radio receiver has sensitivity of -81 dBm at llMbps while the SiGe receiver has sensitivity of -84 dBm. Overall, the radio with CMOS transceiver consumes 5% more current than the one with SiGe chip.

Integrated receivers for mid-band SKA

“…While there are numerous examples of RF-CMOS being used for 2.4 GHz and 5 GHz wireless networking (Valla et al 2005;Li et al 2003) and mobile telephone handsets (Song et al 2005), radio telescope receivers have heretofore not made significant use of RF-CMOS. Until recently, this has made good sense; the unusual requirements of extremely low noise, very wide bandwidths, and the relatively modest numbers of receivers in most radio telescopes tip the scales firmly in favour of more costly high performance GaAs and InP processes, or indeed hand-crafted discrete designs.…”

A CMOS RF front-end for a multistandard WLAN receiver

“…The initial WLAN networks were primarily in the 2.4-GHz industrial, scientific and medical (ISM) band [1]- [3]. The need for higher bandwidth to support faster data rates has seen the emergence of the IEEE 802.11a standard that targets the UNII band in the 5-GHz spectrum [4]- [8].…”