Integrated SAW Broadband Antenna for WLAN/WiMAX

摘要

A miniaturized, integrated broadband surface acoustic wave (SAW) antenna with a size of 8.4 x 6.8 mm is designed on a 0.5 mm thick, 128°-rotated Y-cut lithium niobate (LiNbO_3) piezoelectric substrate. The antenna is constructed using four cross-coupled half-wavelength square open-loop strips and two 16 μm width interdigital transducers (IDT) of 42 pairs. Photolithography and evaporation techniques are used to realize the designed pattern. The proposed antenna has a -10 dB bandwidth of 2.2 GHz (4.8 to 7 GHz) for WLAN/WiMAX bands applications. The gain and far-field radiation patterns of the proposed antenna are also developed in this study.