D-Band Corrugated Horn Antenna Using Multilayer Structured-Glass Technology

This letter demonstrates the use of structured-glass waveguide (SGW) technology in a stackable multilayer configuration in order to exhibit the versatile nature of structured-glass in high-frequency and high-performance applications. A novel multilayer corrugated elliptic horn antenna composed of nine wafer layers is designed for operation in the D-band frequency range and exhibits the use of a circular waveguide feed line. In this manner, the SGW antenna design is introduced to the literature for the first time and demonstrated with the highest operating frequency to date for structured-glass-based waveguide components. Detailed build profiles are provided with reference to the structured-glass fabrication method. Two of the proposed antenna components are fabricated in order to validate the gain measurement. The measured results are shown to achieve highly accurate
S
-parameter results and beam patterns throughout the selected frequency range.