A circularly-polarized array antenna using linearly-polarized sub grid arrays for highly-integrated 60-GHz radio

• Main Authors: Zhang, Bing, Zhang, Yue Ping, Titz, Diane, Ferrero, Fabien, Luxey, Cyril
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/105287; http://hdl.handle.net/10220/16601; http://dx.doi.org/10.1109/TAP.2012.2214752
• Institution: Nanyang Technological University

In this communication, we present a new circularly-polarized array antenna using 2×2 linearly-polarized sub grid arrays in a low temperature co-fired ceramic technology for highly-integrated 60-GHz radio. The sub grid arrays are sequentially rotated and excited with a 90°-phase increment to radiate circularly-polarized waves. The feeding network of the array antenna is based on stripline quarter-wave matched T-junctions. The array antenna has a size of 15×15×0.9 mm3. Simulated and measured results confirm wide impedance, axial ratio, pattern, and gain bandwidths.