Title :
Wide bandgap composite EBG substrates
Author :
Chappell, William J. ; Gong, Xun
Author_Institution :
Dept. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
High-K ceramics are embedded into a polymer host to create an electromagnetic bandgap (EBG) substrate that possess superior properties to previous bandgap implementations in terms of stopband width, attenuation per layer, and practicality. Ceramics are periodically spaced in a commercially-available, Teflon-based host to create a bandgap that spans from 12.1 to 24.1 GHz. Miniature dielectric rods were created in a separate extrusion process, and then placed in a square lattice in a substrate to create the periodic composite. As an application of the material, a defect resonator was created at 20.41 GHz and a Q of 760 was measured.
Keywords :
ceramics; composite materials; dielectric resonators; microwave materials; photonic band gap; substrates; 20.41 GHz; Teflon-based host; attenuation per layer; ceramics; defect resonator; dielectric resonators; electromagnetic bandgap substrate; extrusion process; high-K ceramics; miniature dielectric rods; periodic composite; polymer host; square lattice; stopband width; wide bandgap composite EBG substrates; Attenuation; Ceramics; Dielectric substrates; High K dielectric materials; High-K gate dielectrics; Lattices; Metamaterials; Periodic structures; Photonic band gap; Polymers;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2003.817569
