Planar transmission lines with finitely thick conductors and lossy substrates

Kitazawa, Takio; Kuo, Chih‐Wen; Kong, K.-S.; Itoh, T.

doi:10.1109/mwsym.1991.147118

Cited by 11 publications

(6 citation statements)

References 17 publications

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“…Figure 9 again compares three models for the incremental slot-width used with CF-I to compute the frequency dependent characteristic impedance Z 0 (f, t) for a thin conductor t= 6 μm slot line on the substrate ε r =9.8 with w/h=0.6. All three models follow the SDA results [2] in the low frequency range. However, between 18 GHz-30 GHz none of the models shows the flattened characteristic impedance as provided by the SDA.…”

Section: Characteristic Impedance With Conductor Thicknesssupporting

confidence: 66%

“…14 are computed from the model CF-I discussed earlier. Figure 12a and b compare the conductor loss of a slot-line computed by the present Wheeler's method against the SDA results of Kitazawa et al [2] and Rozzi et al [6]. Two sets of the full-wave results show large variation between themselves.…”

Section: Conductor Lossmentioning

confidence: 91%

“…We have further compared in detail the model-A against the SDA results of Kitazawa [2,3] at frequency 2 GHz, 18 GHz, 30 GHz and 60 GHz. for the slot-line on the substrates having ε r =9.8 and 12.8, conductor thickness 6 μm [2] and 3 μm [3] against the slot widths 0:2 w=h 1:0.…”

Section: Effective Relative Permittivity With Conductor Thicknessmentioning

confidence: 99%

“…line is obtained from the model CF-I in conjunction with conductor thickness correction model-A and model-B. Figure 10a and b compare the computed dielectric losses by the present method against the full-wave results [2,6]. Figure 10a presents the frequency dependent dielectric loss of a slot line between 2 GHz-30 GHz for the slot-width 0.25 mm, 0.5 mm.…”

Section: Dielectric Lossmentioning

confidence: 99%

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Modified Closed-form Dispersion and Loss Models of Slot-Line with Conductor Thickness

Majumdar

Verma

2009

J Infrared Milli Terahz Waves

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The CAD oriented closed-form models are presented to compute frequency and conductor thickness dependent effective relative permittivity and characteristic impedance of a slot-line with finite conductor thickness in the range 3 μm-50 μm. The models have average accuracy about 2% against the full-wave results from different sources in the frequency range 2 GHz-60 GHz, 2:22 " r 20, 0:02 w=h 1:0, 0:01 h=l 0 0:25 ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi " r À 1 ð Þ p. The models to compute the dielectric and conductor losses are also presented that show close agreement with the results of the spectral domain analysis. The average deviations for the dielectric and conductor losses are 0.011 Np/m and 0.143 Np/m against the results of SDA in the frequency range 2 GHz-30 GHz for narrow to wide slot-width.

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Section: Characteristic Impedance With Conductor Thicknesssupporting

confidence: 66%

Section: Conductor Lossmentioning

confidence: 91%

Section: Effective Relative Permittivity With Conductor Thicknessmentioning

confidence: 99%

Section: Dielectric Lossmentioning

confidence: 99%

See 2 more Smart Citations

Modified Closed-form Dispersion and Loss Models of Slot-Line with Conductor Thickness

Majumdar

Verma

2009

J Infrared Milli Terahz Waves

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“…These are summarized in book form . Several analytical and numerical methods—such as conformal mapping methods, quasi‐static Galerkin's method, and full‐wave methods; have been used to get dispersion and losses of the CPW in various geometrical formats . The closed‐form expressions are also reported to compute dispersion in a CPW with zero and with finite conductor thickness .…”

Section: Introductionmentioning

confidence: 99%

Computation of static and frequency-dependent line parameters of multilayer CPW using static SDA and single layer reduction method

Verma

Singh

Bansal

2013

Int J RF and Microwave Comp Aid Eng

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We reformulate the quasi-static SDA applicable to a lossy multilayer CPW that also incorporates two-layer model of a conductor thickness and the concept of effective permeability due to magnetic field penetration in an imperfect conductor. The present static SDA formulation accounts for the effect of conductor thickness and low frequency dispersion on computation of quasi-static effective relative permittivity and characteristic impedance. The paper also presents the single layer reduction (SLR) formulation and circuit model to compute frequency dependent line parameters of a lossy multilayer CPW. The accuracy of formulation is comparable to that of HFSS and CST, without using complex and time consuming full-wave methods. The results of CST for e eff , Z 0 , a d , a c of multilayer CPW, in the frequency range 1-100 GHz, deviate from results of HFSS up to 1.26%, 2.78%, 11.75%, and 18.7%, respectively; whereas corresponding deviations of present formulation are up to 1.56%, 2.4%, 3.04%, and 7%. The results of the present formulation and HFSS are also compared against the available experimental results.

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Ku-band double-sided suspended substrate microstripcoupled-line bandpass filter

Uysal

Lee

1999

Electron. Lett.

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Planar transmission lines with finitely thick conductors and lossy substrates

Cited by 11 publications

References 17 publications

Modified Closed-form Dispersion and Loss Models of Slot-Line with Conductor Thickness

Modified Closed-form Dispersion and Loss Models of Slot-Line with Conductor Thickness

Computation of static and frequency-dependent line parameters of multilayer CPW using static SDA and single layer reduction method

Ku-band double-sided suspended substrate microstripcoupled-line bandpass filter

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