Large-Signal Analysis and Characterization of a RF SOI-based Tunable Notch Antenna for LTE in TV White Space Frequency Spectrum

Abstract

In this paper, a compact frequency-agile notch antenna for LTE low-band using TV white space frequencies is designed and fabricated. The antenna aperture tuning is provided by a SOI CMOS tunable capacitor. The tunable capacitor RF non linearity analysis was studied and measured. The simulated and experimental performances are presented and demonstrate antenna tuning operation from 800 MHz down to 500 MHz. High linearity is validated with measured ACLR levels lower than −30 dBc up to 22 dBm input power in the considered frequency range.