CPW-Fed Suspended 60 GHz On-chip Phased Array with High Efficiency
Abstract
Major shortcoming of current silicon-based millimeter-wave (mmW) on-chip antennas is the low radiation efficiency (5-10%). In this paper, we propose a phased antenna array on silicon substrate with the radiation efficiency >80% at 60GHz. This is achieved by suspending radiating elements using micro-electro-mechanical systems (MEMS) processes, thus creating a low-Epsilon r substrate of air instead of lossy silicon substrate. The designed 5X5 (element) array is well matched at 60 GHz with the -10 dB bandwidth of 2 GHz. The peak realized gain for the 5X5 array is 19.7 dBi with the gain reduction of <4 dB at the maximum scanning angle. Moreover, the scanning volume of the designed antenna is + or - 45 deg in H plane and + or - 48 deg in E plane. As an on-chip phased array, the designed array can be monolithically integrated on a silicon substrate. Moreover, unlike other arrays, it satisfies high realized gain and moderate scanning volume in both E and H planes, making it desirable for next-generation wireless systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 25, 2019
- Accession Number
- AD1076121
Entities
People
- Jiantong Li
- Nima Ghalichechian
Organizations
- Ohio State University