{"id":{"repo_id":"unm","oai_identifier":"oai:digitalrepository.unm.edu:ece_etds-1198"},"canonical_url":"https://search.dev.ndltd.org/etd/unm/oai:digitalrepository.unm.edu:ece_etds-1198","repository":{"repo_id":"unm","name":"University of New Mexico","base_url":"https://digitalrepository.unm.edu/do/oai/"},"display":{"title":"S band narrow-wall slotted waveguide antenna For high-power applications","abstract":"This work seeks designs of novel antennas, such as the rectangular waveguide narrow-wall longitudinal-aperture antenna arrays for S band high power applications. This antenna is designed to perform as a uniform array with minimum power reflected into the feed-waveguide. Based on the configuration, the double-narrow-wall-slot-array design is proposed for higher gain and grating lobes suppression. This work also deals with the S band compact narrow-wall slot-array proposed to be rendered as a conformal antenna structure. Moreover, this work proposes a circularly polarized narrow-wall longitudinal-aperture array design to produce both vertically and horizontally polarized radiated power. In the end, this work presents and discusses a couple of mechanisms for beam-steering of S band narrow-wall longitudinal-aperture array designs. The S-band narrow-wall longitudinal-aperture array design consists of four narrow wall longitudinal-slot radiators and one H-plane-bend-radiator. The design is a combination of computational and microwave network analysis techniques. First, HFSS is used to analyze the S-parameters, phases and radiated power of the narrow-wall longitudinal-slot radiators as well as the H-plane-bend radiator. Second the microwave network is applied to design a uniform linear array by neglecting the external coupling between the elements. Finally, Full-wave analysis is used to validate the array design from microwave network analysis. The double-narrow-wall slot-array design is the best narrow-wall longitudinal-slot array design with a peak gain of approximately 15dB. It consists of two identical narrow-wall-slot-arrays with a common broad wall. It has a much more uniform aperture electric field distributuion than the single array design. As a result, a higher gain with suppressed grating lobes is achieved. The S-band curved rectangular waveguide narrow-wall longitudinal-aperture antenna is proposed to perform as a conformal antenna structure. It is based on a rectangular waveguide bend so that it can be mounted easily on vehicles. It also consists of four narrow-wall longitudinal radiators and one H-plane-bend-radiator similar to the narrow-wall longitudinal slot-array. A circularly polarized narrow-wall longitudinal-aperture array design is also discussed. It produces both vertically and horizontally polarized radiated power. The configuration verified by simulation places adjacent narrow-wall longitudinal radiators orthogonally and keeps the centers of all four narrow-wall longitudinal radiators at the same level. A study of beam-steering capability is also conducted. It is divided into two parts. One moves the main beam on the plane orthogonal to the narrow-wall and orthogonal to the broad-wall of the rectangular waveguide. The other moves the main beam on the plane orthogonal to the narrow-wall and parallel to the broad-wall of the rectangular waveguide. The S-band narrow-wall longitudinal-slot array design works well both ways. Finally, the experiment is designed and conducted to validate the theoretical analysis results for the design of S-band narrow-wall longitudinal-slot array. The results obtained lead to the conclusion that there is good agreement between the theoretical and experiment results.","abstract_html":"This work seeks designs of novel antennas, such as the rectangular waveguide narrow-wall longitudinal-aperture antenna arrays for S band high power applications. This antenna is designed to perform as a uniform array with minimum power reflected into the feed-waveguide. Based on the configuration, the double-narrow-wall-slot-array design is proposed for higher gain and grating lobes suppression. This work also deals with the S band compact narrow-wall slot-array proposed to be rendered as a conformal antenna structure. Moreover, this work proposes a circularly polarized narrow-wall longitudinal-aperture array design to produce both vertically and horizontally polarized radiated power. In the end, this work presents and discusses a couple of mechanisms for beam-steering of S band narrow-wall longitudinal-aperture array designs. The S-band narrow-wall longitudinal-aperture array design consists of four narrow wall longitudinal-slot radiators and one H-plane-bend-radiator. The design is a combination of computational and microwave network analysis techniques. First, HFSS is used to analyze the S-parameters, phases and radiated power of the narrow-wall longitudinal-slot radiators as well as the H-plane-bend radiator. Second the microwave network is applied to design a uniform linear array by neglecting the external coupling between the elements. Finally, Full-wave analysis is used to validate the array design from microwave network analysis. The double-narrow-wall slot-array design is the best narrow-wall longitudinal-slot array design with a peak gain of approximately 15dB. It consists of two identical narrow-wall-slot-arrays with a common broad wall. It has a much more uniform aperture electric field distributuion than the single array design. As a result, a higher gain with suppressed grating lobes is achieved. The S-band curved rectangular waveguide narrow-wall longitudinal-aperture antenna is proposed to perform as a conformal antenna structure. It is based on a rectangular waveguide bend so that it can be mounted easily on vehicles. It also consists of four narrow-wall longitudinal radiators and one H-plane-bend-radiator similar to the narrow-wall longitudinal slot-array. A circularly polarized narrow-wall longitudinal-aperture array design is also discussed. It produces both vertically and horizontally polarized radiated power. The configuration verified by simulation places adjacent narrow-wall longitudinal radiators orthogonally and keeps the centers of all four narrow-wall longitudinal radiators at the same level. A study of beam-steering capability is also conducted. It is divided into two parts. One moves the main beam on the plane orthogonal to the narrow-wall and orthogonal to the broad-wall of the rectangular waveguide. The other moves the main beam on the plane orthogonal to the narrow-wall and parallel to the broad-wall of the rectangular waveguide. The S-band narrow-wall longitudinal-slot array design works well both ways. Finally, the experiment is designed and conducted to validate the theoretical analysis results for the design of S-band narrow-wall longitudinal-slot array. The results obtained lead to the conclusion that there is good agreement between the theoretical and experiment results.","abstract_has_math":false,"creators":["Pan, Xuyuan"],"institution":null,"degree_name":"Electrical Engineering","degree_level":"Thesis","degree_discipline":"Electrical and Computer Engineering","degree_department":null,"school":null,"contributors":["Christodoulou, Christos","Constantine, Joseph","Schamiloglu, Edl"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-01-30T08:00:00Z","date_published":"2013-01-30T08:00:00Z","updated_at":"2026-07-24T05:27:25Z","subjects":["Slot antennas","Antenna arrays","Wave guides."],"languages":["English"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalrepository.unm.edu/ece_etds/199","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Christodoulou, Christos","Constantine, Joseph","Schamiloglu, Edl"]},{"key":"dc:creator","label":"Author","values":["Pan, Xuyuan"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical and Computer Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis","Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Electrical Engineering"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Slot antennas","Antenna arrays","Wave guides."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalrepository.unm.edu/ece_etds/199"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This work seeks designs of novel antennas, such as the rectangular waveguide narrow-wall longitudinal-aperture antenna arrays for S band high power applications. This antenna is designed to perform as a uniform array with minimum power reflected into the feed-waveguide. Based on the configuration, the double-narrow-wall-slot-array design is proposed for higher gain and grating lobes suppression. This work also deals with the S band compact narrow-wall slot-array proposed to be rendered as a conformal antenna structure. Moreover, this work proposes a circularly polarized narrow-wall longitudinal-aperture array design to produce both vertically and horizontally polarized radiated power. In the end, this work presents and discusses a couple of mechanisms for beam-steering of S band narrow-wall longitudinal-aperture array designs. The S-band narrow-wall longitudinal-aperture array design consists of four narrow wall longitudinal-slot radiators and one H-plane-bend-radiator. The design is a combination of computational and microwave network analysis techniques. First, HFSS is used to analyze the S-parameters, phases and radiated power of the narrow-wall longitudinal-slot radiators as well as the H-plane-bend radiator. Second the microwave network is applied to design a uniform linear array by neglecting the external coupling between the elements. Finally, Full-wave analysis is used to validate the array design from microwave network analysis. The double-narrow-wall slot-array design is the best narrow-wall longitudinal-slot array design with a peak gain of approximately 15dB. It consists of two identical narrow-wall-slot-arrays with a common broad wall. It has a much more uniform aperture electric field distributuion than the single array design. As a result, a higher gain with suppressed grating lobes is achieved. The S-band curved rectangular waveguide narrow-wall longitudinal-aperture antenna is proposed to perform as a conformal antenna structure. It is based on a rectangular waveguide bend so that it can be mounted easily on vehicles. It also consists of four narrow-wall longitudinal radiators and one H-plane-bend-radiator similar to the narrow-wall longitudinal slot-array. A circularly polarized narrow-wall longitudinal-aperture array design is also discussed. It produces both vertically and horizontally polarized radiated power. The configuration verified by simulation places adjacent narrow-wall longitudinal radiators orthogonally and keeps the centers of all four narrow-wall longitudinal radiators at the same level. A study of beam-steering capability is also conducted. It is divided into two parts. One moves the main beam on the plane orthogonal to the narrow-wall and orthogonal to the broad-wall of the rectangular waveguide. The other moves the main beam on the plane orthogonal to the narrow-wall and parallel to the broad-wall of the rectangular waveguide. The S-band narrow-wall longitudinal-slot array design works well both ways. Finally, the experiment is designed and conducted to validate the theoretical analysis results for the design of S-band narrow-wall longitudinal-slot array. The results obtained lead to the conclusion that there is good agreement between the theoretical and experiment results."]},{"key":"dc:title","label":"Title","values":["S band narrow-wall slotted waveguide antenna For high-power applications"]}]}],"canonical_facts":{"dc:contributor":["Christodoulou, Christos","Constantine, Joseph","Schamiloglu, Edl"],"dc:creator":["Pan, Xuyuan"],"dc:description.abstract":["This work seeks designs of novel antennas, such as the rectangular waveguide narrow-wall longitudinal-aperture antenna arrays for S band high power applications. This antenna is designed to perform as a uniform array with minimum power reflected into the feed-waveguide. Based on the configuration, the double-narrow-wall-slot-array design is proposed for higher gain and grating lobes suppression. This work also deals with the S band compact narrow-wall slot-array proposed to be rendered as a conformal antenna structure. Moreover, this work proposes a circularly polarized narrow-wall longitudinal-aperture array design to produce both vertically and horizontally polarized radiated power. In the end, this work presents and discusses a couple of mechanisms for beam-steering of S band narrow-wall longitudinal-aperture array designs. The S-band narrow-wall longitudinal-aperture array design consists of four narrow wall longitudinal-slot radiators and one H-plane-bend-radiator. The design is a combination of computational and microwave network analysis techniques. First, HFSS is used to analyze the S-parameters, phases and radiated power of the narrow-wall longitudinal-slot radiators as well as the H-plane-bend radiator. Second the microwave network is applied to design a uniform linear array by neglecting the external coupling between the elements. Finally, Full-wave analysis is used to validate the array design from microwave network analysis. The double-narrow-wall slot-array design is the best narrow-wall longitudinal-slot array design with a peak gain of approximately 15dB. It consists of two identical narrow-wall-slot-arrays with a common broad wall. It has a much more uniform aperture electric field distributuion than the single array design. As a result, a higher gain with suppressed grating lobes is achieved. The S-band curved rectangular waveguide narrow-wall longitudinal-aperture antenna is proposed to perform as a conformal antenna structure. It is based on a rectangular waveguide bend so that it can be mounted easily on vehicles. It also consists of four narrow-wall longitudinal radiators and one H-plane-bend-radiator similar to the narrow-wall longitudinal slot-array. A circularly polarized narrow-wall longitudinal-aperture array design is also discussed. It produces both vertically and horizontally polarized radiated power. The configuration verified by simulation places adjacent narrow-wall longitudinal radiators orthogonally and keeps the centers of all four narrow-wall longitudinal radiators at the same level. A study of beam-steering capability is also conducted. It is divided into two parts. One moves the main beam on the plane orthogonal to the narrow-wall and orthogonal to the broad-wall of the rectangular waveguide. The other moves the main beam on the plane orthogonal to the narrow-wall and parallel to the broad-wall of the rectangular waveguide. The S-band narrow-wall longitudinal-slot array design works well both ways. Finally, the experiment is designed and conducted to validate the theoretical analysis results for the design of S-band narrow-wall longitudinal-slot array. The results obtained lead to the conclusion that there is good agreement between the theoretical and experiment results."],"dc:identifier":["https://digitalrepository.unm.edu/ece_etds/199"],"dc:language":["English"],"dc:subject":["Slot antennas","Antenna arrays","Wave guides."],"dc:title":["S band narrow-wall slotted waveguide antenna For high-power applications"],"thesis:degree_discipline":["Electrical and Computer Engineering"],"thesis:degree_level":["Thesis","Masters"],"thesis:degree_name":["Electrical Engineering"]},"updated_at":"2026-07-24T05:27:25Z"}