Frequency tunable S-band resonator using nematic liquid crystal

Frequency tunable S-band resonator using nematic liquid crystal

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A tunable resonator based on change of substrate permittivity is fabricated using a new high performance liquid crystal GT3-23001. The results show a measured frequency tuning range of 8.2% compared with a simulated 8.5% around a centre frequency of 2.8 GHz, with a lower insertion loss compared to standard liquid crystals.


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      • Liu, L., Langley, R.: `Electrically small antenna tuning techniques', Loughborough Antennas & Propagation Conf., November 2009, Loughborough, UK, p. 313–316.
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      • Computer Simulation Technology webpage,, accessed 4th April 2012.
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      • Yaghmaee, P., Kaufmann, T., Fumeaux, C., Bates, B.: `Effect of polyimide layers on the permittivity tuning range of nematic liquid crystals', European Conf. on Antenna and Propagation, March 2012, Prague, Czech Republic.

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