16.6- and 28-GHz fully integrated CMOS RF switches with improved body floating
Zhang, Yue Ping
Yeo, Kiat Seng
Lim, Wei Meng
Date of Issue2008
School of Electrical and Electronic Engineering
This paper presents two fully integrated CMOS transmit/receive (T/R) switches with improved body-floating operations. The first design exploits an improved transistor layout with asymmetric drain–source region, which reduces the drain–source feed-through for body-floated RF switches. In the second design, a switched body-floating technique is proposed, which reconfigures the body-floating condition of a switch transistor in the ON and OFF states. Both designs are fabricated in a standard 0.13-µm triple-well CMOS process.With regard to 2-dB insertion loss, the switch with asymmetric drain–source achieves 28-GHz bandwidth, which is among the highest reported frequencies for CMOS T/R switches. The bandwidth of the switched body-floating design is 16.6 GHz. There is approximately 5 dB better isolation obtained in the switched body-floating design. With the resistive double-well body-floating technique, 26.5- and 25.5-dBm input 1-dB compression point (P 1dB) are obtained, respectively. Both designs consume only 150 µm X 100 µm die area. The demonstrated T/R switches are suitable for high-frequency and wideband transceivers.
DRNTU::Engineering::Electrical and electronic engineering
IEEE transactions on microwave theory and techniques
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