University of Illinois Urbana-Champaign

An electronic beam-steering antenna using a tunable FSS

Liu, Shuo

This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.

Permalink

https://hdl.handle.net/2142/129615

Description

Title
An electronic beam-steering antenna using a tunable FSS
Author(s)
Liu, Shuo
Issue Date
2025-05-01
Director of Research (if dissertation) or Advisor (if thesis)
Bernhard, Jennifer
Doctoral Committee Chair(s)
Bernhard, Jennifer
Committee Member(s)
  • Schutt-Aine, Jose
  • Dragic, Peter
  • Zhao, Yang
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Antenna, FSS, Beam-steering
Abstract
Two novel FSS (frequency selective surface) systems working from 1.6 to 1.8 GHz are proposed for cellular beam-steering applications. An FSS system is comprised of metallic screens which are sandwiched by dielectric slabs. In order for the system to function as a band-pass filter, the geometry of the unit cell on the metallic screens is designed to be a slotted patch. The FSS system is capable of providing reconfigurable phase shifts for transmitted waves with the use of electronic devices in the unit cells. Therefore, it can achieve beam-steering ability if the phase differences of the transmitted waves coming out of the adjacent columns on the FSS are properly configured. A horn antenna is used as the feed to form a filtenna with the FSS system to provide high gain. Another FSS system made of dipole-patch array is also proposed. This FSS system consists of a basic set of four dipole patches and a tail patch. By adjusting the tail dimension, the FSS system allows for beam-steering ability. Compared with the slotted-patch FSS, the dipole-patch FSS has the advantages of low power consumption and low cost. The experimental and simulated results of both FSS systems are be presented.
Graduation Semester
2025-05
Type of Resource
Thesis
Handle URL
https://hdl.handle.net/2142/129615
Copyright and License Information
Copyright 2025 Shuo Liu

Owning Collections

Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois