1987
DOI: 10.1109/tmtt.1987.1133637
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Coplanar Waveguides for MMIC Applications: Effect of Upper Shielding, Conductor Backing, Finite-Extent Ground Planes, and Line-to-Line Coupling

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Cited by 330 publications
(155 citation statements)
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“…1 The fundamental frequency of the resonators slightly shifts up by increasing W+2S (from ~2.60 GHz for W=20 µm and S=8 µm to ~3.15 GHz for W=60 µm and S=24 µm). This is due to the decrease of effective permittivity (Ԑ eff ) by increasing W+2S [3,4,22,25]. The fundamental for both W=80 and 100 µm are ~3 GHz.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…1 The fundamental frequency of the resonators slightly shifts up by increasing W+2S (from ~2.60 GHz for W=20 µm and S=8 µm to ~3.15 GHz for W=60 µm and S=24 µm). This is due to the decrease of effective permittivity (Ԑ eff ) by increasing W+2S [3,4,22,25]. The fundamental for both W=80 and 100 µm are ~3 GHz.…”
Section: Resultsmentioning
confidence: 99%
“…In the functionality of a typical planar resonator, the most decisive factors are coupling gaps [16,17], center conductor width [18,19], film quality and edge sharpness [20,21], ground plane size and packaging effects [22], effective permittivity (ε eff ) [4] and meander line dispersion [23,24]. Coplanar resonators can be designed based on these theoretical considerations, but resonator optimization for new applications often involves additional testing and tuning of design parameters of the actually fabricated devices, such as presented in this work.…”
Section: Methodsmentioning
confidence: 99%
“…The conformal mapping analysis can provide an accurate prediction across a wide frequency band [34,35]. Analytical results obtained from quasi-static model are compared in this section to the full-wave simulated results.…”
Section: Resultsmentioning
confidence: 99%
“…Sin embargo, los campos que se propagan a lo largo de una CPW están menos confinados que en una línea microstrip, por lo que su sensibilidad a elementos externos es mayor, favoreciendo la aparición de efectos indeseados tales como acoplo entre líneas adyacentes [Ghi87], efecto de bordes en el plano de masa, etc. Esto es una desventaja si se utiliza la CPW para transmitir, pero es una característica muy deseable cuando se pretende utilizar una línea de transmisión como sensor dieléctrico, ya que se obtiene una mayor sensibilidad para detectar cambios en el material cercano al sensor.…”
Section: Sensores Basados En Líneas Coplanaresunclassified
“…Wheeler utilizó el método CM para calcular los parámetros de líneas de transmisión en [Whe64,Whe65]. En el caso de la línea CPW, la particularización del método CM desarrollada por Schwarz-Christoffel permitió obtener la capacitancia de la línea, pero sólo es aplicable para estructuras homogéneas [Ghi87]. Esta es una gran limitación, ya que en la mayoría de los casos, la sección de la línea está formada por varias capas dieléctricas, y por tanto es inhomogénea.…”
Section: Sensores Basados En Líneas Coplanaresunclassified