Direct Use of the High Impedance Surface as an Antenna Without Dipole on Top

作者：Guclu Caner^*; Sloan Jeff; Pan Shiji; Capolino Filippo

来源：IEEE Antennas and Wireless Propagation Letters, 2011, 10: 1536-1539.

DOI：10.1109/LAWP.2011.2181148

• Artificial magnetic conductor (AMC)
• dogbones
• high impedance surface (HIS)
• leaky-wave antennas
• low-profile antennas
• planar antennas

High impedance surfaces (HISs) have been proposed and used as substrate for dipoles for realizing low-profile antennas. Here, we show that HISs can be used directly as low-profile antennas with a single feed point, without any dipole on top. The structure is made of only two metallic layers, the patterned surface and the ground plane below, at a subwavelength distance. We analyze two possible feeding mechanisms of an HIS made of dog-bone-shaped conductors, though the ideas proposed here can be applied also to other HIS structures. We show that broadside gain of the order of 7-11 dBi can be obtained. We also explain that radiation of the HIS is in part related to a TM-like leaky wave with attenuation constant that is not as small in contrast to other standard high-gain leaky-wave antennas.

• 出版日期2011