A high-gain wideband antenna with double Fabry-Perot cavities

作者：Zheng J S^*; Chen L X; Lu Y G; Liu C H

来源：International Journal of Infrared and Millimeter Waves, 2008, 29(9): 839-845.

DOI：10.1007/s10762-008-9385-2

• wideband
• high-gain antenna
• double F-P cavities

high-gain wideband antenna, using the electromagnetic resonances of double Fabry-Perot (F-P) cavities, is proposed. The two cavities are excited by a patch antenna placed in the cavities on top of the ground plane. One of the double F-P cavities is formed by a ground plane and a single metallic strips array, and the other consists of the patch and the metallic strips array. The two F-P cavities have different resonance points which yield the frequency bandwidth of 7% between 13.0 and 14 GHz with S(11 <=)10 dB, meanwhile, in this frequency region high gain is also obtained. Moreover, the center frequency and bandwidth could be adjusted by changing the cavity length. The high-gain wideband antenna was manufactured and measured. The measured VSWR is less than 2 from 13.3 GHz to 15.2 GHz, the measured gain is 13.5 dB at 13.5 GHz. In addition to that, a considerable improvement of 7 dB in terms of gain is obtained when compared to the same antenna without metallic strips.

• 出版日期2008-9
• 单位哈尔滨工业大学