2026-09-21T12:51:54Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/113105 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Bernhard, Jennifer T Smith, Ian H. 2022-01-12T21:47:04Z 2022-01-12T21:47:04Z 2021-07-23 2021-08 The Radar Cross-Section (RCS) of an antenna has two main components: structural RCS and antenna-mode RCS. Structural RCS is due to the physical geometry of the antenna. The antenna-mode RCS component is due to load impedance mismatches and can be manipulated by changing the load impedance connected to the antenna. This thesis explores the behavior of antenna-mode RCS when the load of a simple patch antenna is changed. The load is iterated through equally spaced points on a fixed Voltage Standing Wave Ratio (VSWR) circle on a Smith chart. The behavior was simulated at the fundamental frequency and the first and second harmonics. The patch antenna and the various loads were fabricated, and the actual change in RCS was measured in an anechoic chamber. The simulation data is compared to the measured data. It is seen that a predictable change in RCS occurs as load points are moved around a constant VSWR circle. Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-01-12 without embargo terms The student, Ian Smith, accepted the attached license on 2021-07-23 at 11:34. The student, Ian Smith, submitted this Thesis for approval on 2021-07-23 at 11:56. This Thesis was approved for publication on 2021-07-23 at 14:54. DSpace SAF Submission Ingestion Package generated from Vireo submission #17083 on 2022-01-12 at 12:46:59 Made available in DSpace on 2022-01-12T21:47:04Z (GMT). No. of bitstreams: 2 SMITH-THESIS-2021.pdf: 5358852 bytes, checksum: cf0dbcceb8aa02c9eb81e350dac768e4 (MD5) LICENSE.txt: 4206 bytes, checksum: 3197de203bd053ac735b186c1c94e8c1 (MD5) Previous issue date: 2021-07-23 application/pdf http://hdl.handle.net/2142/113105 en Copyright 2021 Ian Smith Radar Cross-Section Reflection RCS Manipulation RCS Modulation Patch Antenna Resonant Antenna Impedance Mismatch Antenna-Mode RCS Manipulation of antenna-mode radar cross-section in patch antennas text Thesis Electrical & Computer Eng Electrical & Computer Engr University of Illinois at Urbana-Champaign Thesis M.S.