18 July 2000 Millimeter-wave waveguiding using photonic band structures
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Current trends in device miniaturization and integration, especially in the development of microwave monolithic integrated circuits, calls for flexible, arbitrarily shaped and curved interconnects. Standard dielectric waveguides and microstrip lines are subject to prohibitive losses and their functionality is limited because of their unflexible structures. The problem is addressed by confining the wave- guiding path in a substrate with a Photonic Band Gap structure in a manner that will result in the guided mode being localized within the band gap. Two devices implementing Photonic Band Structures for millimeter waves confinement are presented. The first waveguide is a linear defect in triangular lattice created in a silicon slab (TE mode). The structure consists of parallel air holes of circular cross sections. The silicon was laser drilled to create the 2D crystal. The second device consists of alumina rods arranged in a triangular lattice, surrounded by air and sandwiched between two parallel metal plates (TM mode). Electromagnetic wave (W-band) confinement was obtained in both devices for straight and bent waveguides. Three branch waveguides (intersecting line defects) was studied as well. Measurements confirmed the lowloss waveguide confinement property of the utilizing Photonic Band Gap structure. This structure can find applications in power combiner/splitter and other millimeter wave devices.
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Danny Eliyahu, Danny Eliyahu, Lev S. Sadovnik, Lev S. Sadovnik, Vladimir A. Manasson, Vladimir A. Manasson, } "Millimeter-wave waveguiding using photonic band structures", Proc. SPIE 4042, Enabling Photonic Technologies for Aerospace Applications II, (18 July 2000); doi: 10.1117/12.391908; https://doi.org/10.1117/12.391908

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