Presentation	2007-10-26 Application of Effective Permittivity Considering Uniaxial Unisotropic Characteristics of Dielectric Substrates to Filter Designs Suguru AIBA, Yoshio KOBAYASHI, Zhewang MA,
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Abstract(in English)	Dielectric laminate substrates which are commonly used in microwave plane circuits have uniaxial unisotropic characteristics because of multilayer structures : that is, the relative permittivity in the tangential direction ε_ has a different value of one in the normal direction ε_. In this paper, the measurements for a glass-cloth ceramic/PTFE substrate were performed at first by the cavity method and the parallel-plate type disk resonator method, respectively. Actually two filter designs having microstrip line (MSL) and coplanar waveguide (CPW) structures are performed by the two-dimensional simulator SONNET, using each value of the effective permittivity calculated from the measured values ε_ and ε_, respectively. Measured frequency responses for these filters agree well with the designed ones. As a result, a filter design method proposed was verified to be effective for filter designs using dielectric laminate substrates.
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Keyword(in English)	Unisotropy / Effective permittivity / Microstrip line / Coplanar waveguide
Paper #	EMCJ2007-70,MW2007-117
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Conference Information
Committee	EMCJ
Conference Date	2007/10/18(1days)
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Paper Information
Registration To	Electromagnetic Compatibility (EMCJ)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Application of Effective Permittivity Considering Uniaxial Unisotropic Characteristics of Dielectric Substrates to Filter Designs
Sub Title (in English)
Keyword(1)	Unisotropy
Keyword(2)	Effective permittivity
Keyword(3)	Microstrip line
Keyword(4)	Coplanar waveguide
1st Author's Name	Suguru AIBA
1st Author's Affiliation	Saitama University()
2nd Author's Name	Yoshio KOBAYASHI
2nd Author's Affiliation	Saitama University
3rd Author's Name	Zhewang MA
3rd Author's Affiliation	Saitama University
Date	2007-10-26
Paper #	EMCJ2007-70,MW2007-117
Volume (vol)	vol.107
Number (no)	278
Page	pp.pp.-
#Pages	6
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