A High Gain Super Wideband Metamaterial Based Antenna

Abstract

The paper proposes a high gain, metamaterial based super wideband (SWB) antenna. The SWB antenna has two inverted U slots which are responsible for two notches at 3.5 GHz and 5.5 GHz frequencies. A flower-shaped slot is etched from the radiator to obtain the SWB characteristics. The super wideband antenna has dimensions of 30×35 ×1.5 mm 3 with FR4 substrate. The antenna has a frequency bandwidth of 3.1 GHz -15 GHz for S11 < -10dB. A metamaterial unit cell is designed and simulated for permittivity and permeability characteristics. This shows a negative refractive index in the band of 2.4 GHz to 8 GHz and 8.2 GHz to 9 GHz. A 3×3 array of metamaterial cells is used as a superstrate for the improvement of the gain characteristics. The fabricated prototype SWB antenna with superstrate has measured frequency bandwidth 3.1-15 GHz with notched bands at 3.5 GHz and 5.5 GHz. The experimental and simulated results are in line with each other.

High Gain Compact Dual Band Antenna Using Frequency Selective Surface for 5G and WLAN Applications

“…Planar reflectors or reflective layers are employed to enhance the gain of antenna. Artificial Magnetic Conductor (AMC), High Impedance Surface (HIS), FSS or meta material surfaces are designed to improve the antenna gain [11][12][13][14][15][16][17][18][19][20]. An FSS based slotted semicircular UWB antenna is proposed.…”

“…Peak gains of 6.8 dBi and 9.0 dBi are achieved over 2.3-2.65 GHz and 4.9-6.45 GHz, respectively [15]. Gain enhancement techniques using FSS are discussed in [16]. Single or multi-layer FSS is used as a reflector for obtaining directional radiation characteristics over UWB frequencies.…”

Design &amp; Implementation of a Meta-Material Based Ultra-Wide Band Microstrip Patch Antenna for Vehicular Communication

“…Using metamaterials, Aggarwal et al [24] unveiled a high-gain super wideband antenna. In terms of bandwidth, gain, and e ciency, this antenna performed very well.…”

Improvement in notch band characteristics of a hexagonal super wideband antenna by interfering back radiation out of phase with front radiation using frequency selective surface

“…A metamaterial-based SWB antenna with high gain has also been reported in. 25 The application of metamaterials has been widely discussed in the book by Mehta et al 26 It is highly essential to include additional filtering properties with the antenna to reduce interference issues with narrowband applications. Band-notched UWB and SWB antennas have gained attention among researchers.…”