科研之友
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摘要
A small printed antenna is proposed for dual-band applications. The antenna is patterned on the front of an 0.8-mm FR4 substrate to obtain a low-frequency resonance and a stub is patterned on the back of the substrate to obtain a high-frequency resonance. The antenna without ground plane is small (8 X 35 mm), and it is suitable to operate as an internal antenna. For S(H) less than -6 dB, the antenna operates at 900 MHz with a bandwidth of 66 MHz, and at 1.8 GHz with a bandwidth of 130 MHz. Maximum radiation efficiencies were 52% at both 900 MHz and 1805 MHz.
- 出版日期2009-7
