{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/134945"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/134945","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"An Investigation on the Effect of Ground Plane Roughness on Antenna Radiation Characteristics","abstract":"This work considers the performance of a thin-wire monopole antenna over both a flat ground plane and a randomly-varying rough surface. The Method of Moments with the Electric Field Integral Equation (EFIE) is used to account for all coupling interactions. Monte Carlo averaging is used to compute results over multiple rough surface realizations, which follow the Pierson-Moskowtiz surface model. The results investigate the effect of increasing surface roughness, via increased wind speed, on the antenna input impedance and resulting total field. In particular, the antenna input reactance is found to be very sensitive to variations in the surface near the base of the antenna. The directionality of the Pierson-Moskowitz surface due to wind direction is also considered. Results show no significant difference in the radiated field pattern cuts in the parallel versus perpendicular wind directions.","abstract_html":"This work considers the performance of a thin-wire monopole antenna over both a flat ground plane and a randomly-varying rough surface. The Method of Moments with the Electric Field Integral Equation (EFIE) is used to account for all coupling interactions. Monte Carlo averaging is used to compute results over multiple rough surface realizations, which follow the Pierson-Moskowtiz surface model. The results investigate the effect of increasing surface roughness, via increased wind speed, on the antenna input impedance and resulting total field. In particular, the antenna input reactance is found to be very sensitive to variations in the surface near the base of the antenna. The directionality of the Pierson-Moskowitz surface due to wind direction is also considered. Results show no significant difference in the radiated field pattern cuts in the parallel versus perpendicular wind directions.","abstract_has_math":false,"creators":["Poland, William Hamilton"],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Electrical Engineering","degree_department":"Electrical Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":["Davis, Bradley A."],"committee_members":["Brown, Gary S.","Ellingson, Steven W."],"year":2025,"date_issued":"2025-05-30","date_published":"2025-05-30","updated_at":"2026-07-22T22:20:20Z","subjects":["Electromagnetics","Method of Moments","Scattering","Rough Surface"],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:43962"],"render_values":[{"text":"vt_gsexam:43962","href":null,"code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/10919/134945","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Davis, Bradley A."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Brown, Gary S.","Ellingson, Steven W."]},{"key":"dc:contributor.department","label":"Department","values":["Electrical Engineering"]},{"key":"dc:creator","label":"Author","values":["Poland, William Hamilton"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-05-31T08:01:16Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-05-31T08:01:16Z"]},{"key":"dc:date.issued","label":"Date","values":["2025-05-30"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Electromagnetics","Method of Moments","Scattering","Rough Surface"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:43962"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/10919/134945"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This work considers the performance of a thin-wire monopole antenna over both a flat ground plane and a randomly-varying rough surface. The Method of Moments with the Electric Field Integral Equation (EFIE) is used to account for all coupling interactions. Monte Carlo averaging is used to compute results over multiple rough surface realizations, which follow the Pierson-Moskowtiz surface model. The results investigate the effect of increasing surface roughness, via increased wind speed, on the antenna input impedance and resulting total field. In particular, the antenna input reactance is found to be very sensitive to variations in the surface near the base of the antenna. The directionality of the Pierson-Moskowitz surface due to wind direction is also considered. Results show no significant difference in the radiated field pattern cuts in the parallel versus perpendicular wind directions."]},{"key":"dc:description.abstractgeneral","label":"General Abstract","values":["This works uses a numerical technique called the Method of Moments to simulate the behavior of radio waves traveling over a randomly rough (i.e. ocean-like) surface. This work considers a monopole antenna on the surface as the source of radio waves and computes how waves travel out from the antenna and interact with the ocean-like surface. An exact formulation is used to consider all the effects that such waves have on both the antenna and the surface. The results from this work can be used to better understand how radio waves travel in an ocean-like environment, which can help inform decisions for designing communication systems."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["ETD"]},{"key":"dc:title","label":"Title","values":["An Investigation on the Effect of Ground Plane Roughness on Antenna Radiation Characteristics"]}]}],"canonical_facts":{"dc:contributor.committeechair":["Davis, Bradley A."],"dc:contributor.committeemember":["Brown, Gary S.","Ellingson, Steven W."],"dc:contributor.department":["Electrical Engineering"],"dc:creator":["Poland, William Hamilton"],"dc:date.accessioned":["2025-05-31T08:01:16Z"],"dc:date.available":["2025-05-31T08:01:16Z"],"dc:date.issued":["2025-05-30"],"dc:description.abstract":["This work considers the performance of a thin-wire monopole antenna over both a flat ground plane and a randomly-varying rough surface. The Method of Moments with the Electric Field Integral Equation (EFIE) is used to account for all coupling interactions. Monte Carlo averaging is used to compute results over multiple rough surface realizations, which follow the Pierson-Moskowtiz surface model. The results investigate the effect of increasing surface roughness, via increased wind speed, on the antenna input impedance and resulting total field. In particular, the antenna input reactance is found to be very sensitive to variations in the surface near the base of the antenna. The directionality of the Pierson-Moskowitz surface due to wind direction is also considered. Results show no significant difference in the radiated field pattern cuts in the parallel versus perpendicular wind directions."],"dc:description.abstractgeneral":["This works uses a numerical technique called the Method of Moments to simulate the behavior of radio waves traveling over a randomly rough (i.e. ocean-like) surface. This work considers a monopole antenna on the surface as the source of radio waves and computes how waves travel out from the antenna and interact with the ocean-like surface. An exact formulation is used to consider all the effects that such waves have on both the antenna and the surface. The results from this work can be used to better understand how radio waves travel in an ocean-like environment, which can help inform decisions for designing communication systems."],"dc:description.degree":["Master of Science"],"dc:format.medium":["ETD"],"dc:identifier.other":["vt_gsexam:43962"],"dc:identifier.uri":["https://hdl.handle.net/10919/134945"],"dc:language.iso":["en"],"dc:publisher":["Virginia Tech"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:subject":["Electromagnetics","Method of Moments","Scattering","Rough Surface"],"dc:title":["An Investigation on the Effect of Ground Plane Roughness on Antenna Radiation Characteristics"],"dc:type":["Thesis"],"thesis:degree_discipline":["Electrical Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:20:20Z"}