Narrow Ka bandpass filters using periodically loaded substrates Conference Paper

abstract

• High-k ceramics (TiO/sub 2/) are periodically embedded into a polymer based host material to create a filter utilizing the two-dimensional stopband of the periodic dielectric materials. The high-k ceramic rods (/spl epsiv//spl sim/90) are periodically spaced in a commercially-available Teflon-based host, to create a material that will inhibit propagation in two-dimensions. The inhibition of energy is used to create a resonance (termed a defect resonance), which in turn serves as the basis to create a filter. 2 and 4 pole filters were designed using this technology. The filter comprises a narrow passband region residing within the material stopband (12.1 GHz to 24.2 GHz). A/spl sim/1% bandwidth filter design yielded measured insertion losses of 1.13 dB and 1.69 dB @ 20.45 GHz for 2 and 4 pole filters respectively, correlating to an unloaded Q of approximately 1100. A maximal discrepancy of 2% was achieved on all measures of filter performance.

name of conference

• IEEE MTT-S International Microwave Symposium Digest, 2003

authors

• Katehi, Linda

published proceedings

• 2003 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-3

author list (cited authors)

• Chappell, W. J., Gong, X., & Katehi, L.

citation count

• 13

complete list of authors

• Chappell, WJ||Gong, X||Katehi, LPB

publication date

• January 2003

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE MTT-S International Microwave Symposium digest. IEEE MTT-S International Microwave Symposium  Journal

keywords

• 1.13 Db
• 1.69 Db
• 12.1 To 24.2 Ghz
• 20.45 Ghz
• 2d Energy Propagation Inhibition
• Band Pass Filters
• Band-pass Filters
• Ceramics
• Defect Resonances
• Dielectric Material Periodic Structure 2d Stopband
• Dielectric Materials
• Dielectric Resonator Filters
• Dielectric Substrates
• Electromagnetic Bandgap Materials
• High K Dielectric Materials
• High Q Factor Filters
• High-k Gate Dielectrics
• Insertion Losses
• Passband
• Periodic Structures
• Periodically Loaded Substrate Narrow Ka Bandpass Filters
• Polymer Embedded High-k Ceramic Rods
• Polymers
• Q-factor
• Resonance
• Resonator Filters
• Space Technology
• Teflon
• Tio/sub 2/
• Titania
• Titanium Compounds
• Two/four Pole Filters

Digital Object Identifier (DOI)

• 10.1109/mwsym.2003.1210446

International Standard Book Number (ISBN) 10

• 0-7803-7695-1

start page

• 1611

end page

• 1614

volume

• 3

URL

• http://dx.doi.org/10.1109/mwsym.2003.1210446