Performance Improvement of a U-Slot Patch Antenna Using a Dual-Band Frequency Selective Surface With Modified Jerusalem Cross Elements

A Compact Umbrella-Shaped UWB Antenna with Gain Augmentation Using Frequency Selective Surface

“…Metallic reflectors can be used below the antenna for the purpose, however as the spacing between antenna and the reflector is fixed, this kind of arrangement is not capable of producing enhanced radiation over a wide bandwidth. To overcome these problems periodic structures like Partially Reflective Surfaces (PRS) and Frequency Selective Surfaces (FSS) are being used nowadays in place of solid metallic reflectors [14][15][16][17][18]. Alexandros P. Feresidis et al proposed a FSS-based Artificial Magnetic Conductor (AMC) operating at 22 GHz placed surrounding a patch antenna [14].…”

“…The antenna with the AMC achieved a high gain of 20 dBi. The use of a FSS with Jerusalem cross shaped elements as a substrate below the radiating element to improve its bandwidth as well as gain at 2.45 GHz and 5.8 GHz, was proposed by Hsing-Yi Chen and Yu Tao [15]. In all such works the enhancement of gain was limited to a narrow bandwidth.…”

A Dual Layer Frequency Selective Surface Reflector for Wideband Applications

“…[1][2][3]. In recent years, researchers have become interested in designing wideband FSS structures of both bandpass and bandstop response for their applications in gain or directivity enhancement of broadband, omni-directional antennas such as slot antennas when used as their substrates (bandstop) or superstrates (bandpass) [4][5][6][7][8][9]. Such enhancements are also possible with simple metallic reflectors placed at quarter wavelength spacing from the antenna, but their functioning is optimal over a smaller bandwidth.…”

“…Moreover FSS also provides shielding to the antenna against nearby conductive elements [6]. Gain and bandwidth enhancement of a dual band U slot patch antenna using loop shaped FSS as substrate was proposed by Hsing-Yi Chen and Yu Tao [5]. A high gain edge fed patch antenna was designed by W. Yang et al [9] where gain of the antenna and its array was enhanced over a wide bandwidth using artificial magnetic conductors (AMC).…”

Gain Enhancement of a Wide Slot Antenna Using a Second-Order Bandpass Frequency Selective Surface

“…Recently, Frequency Selective Surfaces (FSS) are being used in the form of substrates or superstrates [5][6][7][8][9][10][11] for the enhancement of antenna performances. Metal type FSS superstrates are much easier to fabricate than the dielectric type.…”