Title :
SOI CMOS tunable capacitors for RF antenna aperture tuning
Author :
Nicolas, Dominique ; Giry, Alexandre ; Ben Abdallah, Essia ; Bories, Serge ; Tant, Gauthier ; Parra, Thierry ; DELAVEAUD, christophe ; Vincent, Pierre ; Po, Francis Chan Wai
Author_Institution :
Univ. Grenoble Alpes, Grenoble, France
Abstract :
This paper provides a detailed analysis of a SOI CMOS tunable capacitor for antenna tuning. Design expressions for a switched capacitor network are given and quality factor of the whole network is expressed as a function of design parameters. Application to antenna aperture tuning is described by combining a 130 nm SOI CMOS tunable capacitor with a printed notch antenna. The proposed tunable multiband antenna can be tuned from 420 MHz to 790 MHz, with an associated radiation efficiency in the 33-73% range.
Keywords :
CMOS analogue integrated circuits; Q-factor; UHF antennas; antenna radiation patterns; aperture antennas; capacitors; elemental semiconductors; microstrip antennas; multifrequency antennas; silicon-on-insulator; switched capacitor networks; RF antenna aperture tuning; SOI CMOS tunable capacitors; Si; design parameters; efficiency 33 percent to 73 percent; frequency 420 MHz to 790 MHz; printed notch antenna; quality factor; radiation efficiency; size 130 nm; switched capacitor network; tunable multiband antenna; Aperture antennas; CMOS integrated circuits; Capacitance; Capacitors; Q-factor; Tuning;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2014 21st IEEE International Conference on
DOI :
10.1109/ICECS.2014.7050002
