07/20/2021
By Sokny Long

The Francis College of Engineering, Department of Electrical & Computer Engineering, invites you to attend a doctoral proposal defense by Hong Tang on “Multifunctional antenna and antenna array systems”.

PhD Candidate: Hong Tang
Defense Date: Tuesday, Aug. 3, 2021
Time: 1:30 to 3:30 p.m. EST
Location: This will be a virtual defense via Zoom. Those interested in attending should contact Hong_Tang@student.uml.edu and committee advisor, hualiang_zhang@uml.edu, at least 24 hours prior to the defense to request access to the meeting.

Committee Chair (Advisor): Hualiang Zhang, Professor, Electrical and Computer Engineering, University of Massachusetts Lowell

Committee Members:

  • Man Hoi Wong, Assistant Professor, Electrical and Computer Engineering, University of Massachusetts Lowell
  • Wei Guo, Associate Professor, Physics and Applied Physics, University of Massachusetts Lowell

Brief Abstract:
Multifunctional antennas and antenna arrays play an indispensable role in emerging wireless systems. For example, high-resolution radars, software-defined radios, electronic countermeasure systems, multi-input and multi-output (MIMO) systems, wearable and flexible electronic devices, and unmanned aerial vehicles (UVAs) all demand multifunctional antennas and arrays. Specifically, tightly coupled dipole arrays (TCDAs) and flexible isotropic MIMO antennas have emerged as attractive options for wideband systems and MIMO systems. In this work, an ultra-wideband TCDA with a bandwidth of 13.66:1 (0.52 GHz to 7.10 GHz) based on lossless frequency selective surfaces (FSSs) is reported with record-high efficiency. Additionally, a dual-band flexible MIMO antenna with a quasi-isotropic radiation pattern is also presented. The underlying operating principles are analyzed, which are further validated by experimental results. Prototypes of designed antennas and arrays can be readily deployed in practical systems, therefore pushing the performance of next-generation wireless systems.

All interested students and faculty members are invited to attend the online defense via remote access.