A Study of Microstrip Lines on Cordierite Substrate
碩士 === 國立成功大學 === 電機工程研究所 === 83 === One of the main requirements for a transmission structure to be suitable as a circuit element in microwave integrated circuits( MICs) is that the structure should be planar in configuration.A planar conf...
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ndltd-TW-083NCKU04420152015-10-13T12:53:36Z http://ndltd.ncl.edu.tw/handle/53701559459563985931 A Study of Microstrip Lines on Cordierite Substrate 微帶線路在堇青石基板行為之研究 Lee-Yee Chen 陳力毅 碩士 國立成功大學 電機工程研究所 83 One of the main requirements for a transmission structure to be suitable as a circuit element in microwave integrated circuits( MICs) is that the structure should be planar in configuration.A planar configuration implies that the characteristics of the element can be determined by the dimensions in a single plane. Microstrip line is the most popular transmission line structure that satisfies the requirement of being planar.Ease of fabrication by photolithographic techniques and a good range of impedances and couplings allow it to be used for a wide variety of circuit components.Also, simple transitions to coaxial circuits are feasible.For frequency up to 26 GHz,99.6% alumina substrate (dielectric constant=9.8)has been used by many designers.At higher frequency above 26 GHz,fabrication difficulty becomes significant due to the shorter effective wavelength, which results in the smaller size of the circuit. Since the effective wavelength(and hence the group velocity) is inverse proportional to the square root of the effective dielectric constant,which is closely related to the dielectric constant,a new substrate with lower dielectric constant will solve the problem.Futhermore, the group velocity will also increase when the dielectric constant is reduced. In this work, the cordierite sol-gel glass ceramic powder was used to construct the substrate(dielectric constant : 5-6@1KHz). Basic properties of microstrip lines on cordierite substrate were examined.A comparison to those in alumina substrate is also given. Experiments show that the cordierite substrates have good performance and are suitable for millimetre-wave microstrip designs. C.C.Wei, C.L.Huang 魏炯權, 黃正亮 1995 學位論文 ; thesis 57 en_US |
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碩士 === 國立成功大學 === 電機工程研究所 === 83 === One of the main requirements for a transmission structure to be
suitable as a circuit element in microwave integrated circuits(
MICs) is that the structure should be planar in configuration.A
planar configuration implies that the characteristics of the
element can be determined by the dimensions in a single plane.
Microstrip line is the most popular transmission line structure
that satisfies the requirement of being planar.Ease of
fabrication by photolithographic techniques and a good range of
impedances and couplings allow it to be used for a wide variety
of circuit components.Also, simple transitions to coaxial
circuits are feasible.For frequency up to 26 GHz,99.6% alumina
substrate (dielectric constant=9.8)has been used by many
designers.At higher frequency above 26 GHz,fabrication
difficulty becomes significant due to the shorter effective
wavelength, which results in the smaller size of the circuit.
Since the effective wavelength(and hence the group velocity) is
inverse proportional to the square root of the effective
dielectric constant,which is closely related to the dielectric
constant,a new substrate with lower dielectric constant will
solve the problem.Futhermore, the group velocity will also
increase when the dielectric constant is reduced. In this work,
the cordierite sol-gel glass ceramic powder was used to
construct the substrate(dielectric constant : 5-6@1KHz). Basic
properties of microstrip lines on cordierite substrate were
examined.A comparison to those in alumina substrate is also
given. Experiments show that the cordierite substrates have
good performance and are suitable for millimetre-wave
microstrip designs.
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author2 |
C.C.Wei, C.L.Huang |
author_facet |
C.C.Wei, C.L.Huang Lee-Yee Chen 陳力毅 |
author |
Lee-Yee Chen 陳力毅 |
spellingShingle |
Lee-Yee Chen 陳力毅 A Study of Microstrip Lines on Cordierite Substrate |
author_sort |
Lee-Yee Chen |
title |
A Study of Microstrip Lines on Cordierite Substrate |
title_short |
A Study of Microstrip Lines on Cordierite Substrate |
title_full |
A Study of Microstrip Lines on Cordierite Substrate |
title_fullStr |
A Study of Microstrip Lines on Cordierite Substrate |
title_full_unstemmed |
A Study of Microstrip Lines on Cordierite Substrate |
title_sort |
study of microstrip lines on cordierite substrate |
publishDate |
1995 |
url |
http://ndltd.ncl.edu.tw/handle/53701559459563985931 |
work_keys_str_mv |
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