ST’s antenna tuners and tunable capacitors offer high quality and high reliability based on a ferroelectric material composed of baryum strontium and titanate (BST). The adoption of this new tunable material is a breakthrough that enables RF tunable technology to serve the mobile wireless market.
ST markets three product series, derived from its tunable technology:
Discrete tunable capacitors : the STPTIC devices
Complete antenna tuner modules : the STRAFT devices, made of tunable capacitors, combined with high-Q inductor and assembled into LGA modules
Tuning ciruits: the STHVDAC devices, capable of driving both STPTIC and STRAFT devices. These antenna tuning circuits can be controlled via SPI or the new radio-frequency front-end (RFFE) interface developed by the MIPI Alliance