With the future LTE auction for TV white spacesat 600 MHz, there is a strong need for efficient handset antennasoperating at very low frequencies. This paper shows a tunableantenna covering the LTE bands from 600 MHz to 2.6 GHz.The antenna uses state-of-the-art MEMS tunable capacitors inorder to reconfigure its operating frequency. In this work, thedesign mitigates the tuning loss with a tunable extended groundplane. The resulting dual-resonant antenna exhibits a peak totalefficiency of -3.9 dB at 600 MHz.
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