19 May '15, 7pm

A Tunable Liquid Metal Antennas for Tuning in to Anything

Tuning in is getting to be a complicated thing. The Internet of Things will need more microwave bands with shorter wavelengths. Cell phones are already need to link to GPS and Wi-Fi services on top of 4G and other cellular networks. And in the future they’ll likely also have to contend millimeter-wave bands for 5G services . All those need antennas of different lengths and shapes to accommodate the sometimes widely spread wavelength bands. Monopole antennas, consisting of a single conducting rod, transmit maximum power when their length corresponds to half the wavelength of the RF signal, but for devices operating at different wavelengths this becomes a problem. "The present solution is to have a switchable filter bank along with switchable and/or multi-band antenna,” says Jacob Adams , an engineer at North Carolina State University . “These solutions take up a lot of spac...

Full article: http://spectrum.ieee.org/tech-talk/consumer-electronics/p...

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