Modeling and properties of hybrid integration structures based on unbalanced nonradiative dielectric (NRD) waveguide

Jinbang Tang; Ke Wu

doi:10.1117/12.422155

18 December 2000 Modeling and properties of hybrid integration structures based on unbalanced nonradiative dielectric (NRD) waveguide

Jinbang Tang, Ke Wu

Author Affiliations +

Proceedings Volume 4111, Terahertz and Gigahertz Electronics and Photonics II; (2000) https://doi.org/10.1117/12.422155
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Non-radiative dielectric (NRD) waveguide, surface-mounted on the top of a relatively thin planar substrate, provides a great flexibility for the integration of planar circuits with NRD-guide. Such an unbalanced NRD-guide may be in direct contact with planar circuits that are fabricated on the same substrate such as microstrip circuits. Besides, NRD-guide may be easily integrated with the microstrip circuits also on a separate dielectric layer by aperture coupling. To facilitate its practical implementation, the dielectric layered surface-mounted NRD-guide structure has been proposed in this paper, this structure is especially suited to the implemented of millimeter-wave integrated circuits. Transitions of planar circuit to surface-mounted NRD-guide have been studied with emphasis on the analysis of potential spurious modes, which provides a basis for the performance-enhanced broadband design and applications. Principal modes generated in the hybrid planar/NRD-guide structure are modeled. Results for transmission and return loss are presented for different transitions. Our investigation indicates than an optimized but uncompensated hybrid planar/NRD-guide integrated transmission should be good enough for many applications over a certain frequency band. For broadband applications, however, spurious mode suppressors in the design of eliminating unwanted modes are required. A design example is also presented.

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Jinbang Tang and Ke Wu "Modeling and properties of hybrid integration structures based on unbalanced nonradiative dielectric (NRD) waveguide", Proc. SPIE 4111, Terahertz and Gigahertz Electronics and Photonics II, (18 December 2000); https://doi.org/10.1117/12.422155

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