New frequency-reconfigurable microstrip antenna composed of organic semiconductor polymer

A novel frequency-reconfigurable microstrip antenna composed of organic semiconductor polymer (P3HT) is proposed. Resonance frequency of the antenna is tuned in 6.8–7.73 GHz band, by changing the light illumination intensity of a 5 W/cm2 white light source. Behavior of the antenna under different light intensities is investigated and compared to a reference copper antenna. Measured radiation patterns are identical in higher and lower resonant bands. Measured radiation efficiency and gain of the proposed antenna are compared in higher and lower bands. The results indicate that, it is possible to obtain reasonable performance albeit with modest radiation efficiencies.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We propose a novel microstrip antenna composed of organic polymer P3HT. ► We design, simulate and construct the proposed antenna. ► The resonance frequency can be adjusted by optical light illumination intensity. ► We measure radiation patter at different resonant bands. ► We calculate radiation efficiency and gain of the antenna at different bands.