Electrical and Computer Engineering ETDs
Publication Date
Spring 5-16-2026
Abstract
This work presents a new wideband millimeter-wave (mmWave) and sub-terahertz antenna design with flexible directivity through the integration of stepped horn antennas and transverse substrate integrated waveguide (SIW) slots for radar and communication applications. The work gives a theoretical and analytical basis for this filter-inspired approach to improving bandwidth and directivity, and presents design and results for a standalone stepped horn, a Ka-band antenna with a solid stepped horn and SIW feed, and W-band antennas with empty SIW feeds and stepped horns manufactured out of multiple planar layers. The realized antennas show bandwidth up to 40% and gain up to 9 dB representing a significant improvement over existing broadside radiating planar antennas.
Keywords
mmWave, stepped horn, planar antenna, wideband, high gain
Document Type
Dissertation
Language
English
Degree Name
Electrical Engineering
Level of Degree
Doctoral
Department Name
Electrical and Computer Engineering
First Committee Member (Chair)
Christos Christodoulou
Second Committee Member
Mohamed Basha
Third Committee Member
Francesca Cavallo
Fourth Committee Member
Nathan Jackson
Recommended Citation
Bergstedt, Zachary. "Millimeter-wave Antenna Gain Enhancement Through Stacked Planar Substrates." (2026). https://digitalrepository.unm.edu/ece_etds/772
Included in
Electromagnetics and Photonics Commons, Electronic Devices and Semiconductor Manufacturing Commons, Systems and Communications Commons