Design of Reflectarray Microstrip Antenna with Butterfly Patch and Square Ring Elements for WiGig Applications

摘要

Wireless Gigabit Applications in 60 GHz frequency spectrum provides up to 7 Gbps data rates. This rate is 7 times faster than the current WiFi network. To support high data speed, antenna with high gain is required. The reflectarray antenna that combines the features of the reflector and unit cells in array configuration, therefore can achieve high gain by controlling the phase of the unit cells. This paper proposes a reflectarray antenna with 163 butterfly-patch with square ring in 70 mm x 70 mm microstrip antenna that works in 60 GHz frequency. The reflectarray antenna was fabricated using RO4003C type PCB with ($arepsilon$ r = 3.55; h = 0.51 mm) and measured. Simulated results show that the proposed reflectarray antenna has 26.56 dBi gain, whereas measured results can achieve a high gain of 23 dBi at a frequency of 60 GHz.