Title :
7-GHZ CMOS RF Front-End Monolithically Integrated with Inverted-F Antenna for Wireless Sensor System
Author :
Ikebe, M. ; Ueo, D. ; Osabe, H. ; Inafune, K. ; Sano, E. ; Koutani, M. ; Ikeda, M. ; Mashiko, K.
Author_Institution :
Hokkaido Univ., Sapporo
Abstract :
Transmitter, receiver antennas and sensors monolithically integrated with CMOS LSIs are strongly demanded as a means of reducing the cost of wireless equipment. As the first step, an RF front- end (low-noise-amplifier [LNA] and mixer) is designed for use in the 7-GHz band corresponding to multi-band OFDM UWB group3 spectrum allocation. We clarify the design methodology of antennas on lossy Si substrates. The RF front-end with the antenna was fabricated using a 0.18-mum CMOS process. Measured conversion gain with 60-cm air interface is about -50 dB in the above band.
Keywords :
CMOS integrated circuits; MMIC amplifiers; MMIC mixers; large scale integration; microwave antennas; receiving antennas; ultra wideband communication; wireless sensor networks; CMOS RF front-end; OFDM UWB group3 spectrum allocation; air interface; frequency 7 GHz; inverted-F antenna; large scale integration; wireless sensor system; CMOS process; Costs; Design methodology; OFDM; Radio frequency; Receiving antennas; Sensor systems; Transmitters; Transmitting antennas; Wireless sensor networks; RF front-end; UWB; lossy Si substrates; on chip antenna;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007. International
Conference_Location :
Lyon
Print_ISBN :
1-4244-0842-3
Electronic_ISBN :
1-4244-0842-3
DOI :
10.1109/SENSOR.2007.4300071
