Abstract
Slotted circular printed layered patch antenna is designed, simulated and fabricated for 5G (Fifth Generation) wireless communication applications. The antenna consists of slots in the main radiating circular patch element for miniaturizing the size of the radiating element and providing dual band radiation characteristics. The feed line is separated on bottom substrate layer with EBG (Electromagnetic Band-Gap) embedded for enhancing the gain characteristics of the antenna. Superstrate layer is also used for improving the gain of the antenna where the distance from the radiating antenna element is optimized for maximizing the impedance bandwidth and radiation characteristics. The feed realization and impedance matching of the radiating slotted circular patch antenna is done by inducing slot at the middle ground plane of the slot embedded circular patch antenna system. The proposed configuration provides power radiation gain values of more than 5 dB for the Ka band of communications, whereas the impedance bandwidth of the antenna is verified for the dual resonances at 27.5 and 28.5 GHz. Dual band radiation characteristics are attained by embedding and optimizing the slot length and width in the circular patch radiator element that is placed on the upper face of the substrate RT Rogers Duroid 5880 layer. The length of the microstrip feed line embedded in the lower layer of the substrate is optimized for providing required bandwidth characteristics for the dual frequency point radiations. The antenna configuration is designed, modeled and simulated in CST (Central Standard Time) Microwave studio. The antenna is fabricated and measured vs simulated frequency response, gain patterns and current density plots are presented for the verification of antenna operation in the desired frequency bands.
Highlights
Slotted circular printed layered patch antenna is designed, simulated and fabricated for 5G (Fifth Generation) wireless communication applications
Wide band radiation characteristics can be achieved for 5G systems by using tapered slot radiating element fed by substrate integrated feeding line with multiple beam characteristics for MIMO (Multiple Input Multiple Output) communications [2]
Wideband antenna with reduced losses and high gain is designed by using dipole antenna based on magneto electric properties and excited by waveguide integrated coupled slot line where the gain is enhanced by stacking additional substrate layers [8]
Summary
Wof high data rate requirements and growth in the use of portable devices pose a challenge for higher system bandwidth and enhanced channel capacity. High gain printed antennas provide suitability for the 5G systems for compensating path losses by using four element arrays that are designed by triangular shaped slots embedded in substrate fed by integrated feeding microstrip feeding lines [3]. Low side lobe antenna arrays are designed for achieving low cross polarization levels by substrate integrated feeding lines and tapered T junction dividers suitable at 28 GHz for 5G systems [6]. EBG structures can be used for millimeter wave wireless communication applications [22] for reduced mutual coupling for array antennas based on miniaturized EGB cells at 60 GHz. Circularly polarized antenna is designed by using linearly polarized EBG antenna with layer of meander line polarizer from 29.5-30 GHz with less than 1 dB axial ratio is achieved [23]. The simulation of the proposed slotted circular layered antenna is done in CST Microwave Studio for frequency response, gain and current distribution plots for the verification of the operation of the antenna for 5G applications
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