Low-Profile Broadband Patch-Driven Metasurface Antenna
Weikang Wan, Mei Xue, Liqiang Cao, Tianchun Ye, Qidong Wang
Abstract
In this letter, a patch-driven low-profile broadband metasurface (MTS) antenna is proposed. The novel antenna is constituted utilizing an aperture coupled patch and proposed configurations of finite-sized artificial magnetic conductor. With the surrounding MTS excited by the surface wave introduced through the center patch, an additional TM resonance is generated and a wideband impedance matching is achieved. The performance and operating mechanism of the proposed antenna are investigated and analyzed. To demonstrate the concept, a 1 × 4 array with an overall thickness of 0.047 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> (λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> is the free-space wavelength at 28 GHz) is successfully implemented through advanced substrate manufacturing process. The obtained impedance bandwidth for reflection coefficient below -10 dB is 27.1% with a maximum realized gain of 13.6 dBi.