Propagation modes and dispersion characteristics of coplanar waveguides

Riaziat, M.; Majidi-Ahy, R.; Feng, I.J.

doi:10.1109/22.45333

Cited by 172 publications

(62 citation statements)

References 13 publications

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“…In reality, the FGCPW has a finite substrate; hence the effects of slab modes, including TE 0 and TM 0 with zero cutoff frequency, can become appreciable. The first substrate mode to start interacting with the CPW is TE 0 [20]. HFSS simulation on the attenuation coefficients α for the CPW and TE 0 mode from 20 GHz to 100 GHz are shown in Figure 15.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Development of an Equivalent Circuit Model of a Finite Ground Coplanar Waveguide Interconnect in Mis System for Ultra-Broadband Monolithic Ics

Ehsan¹,

Zhou²,

2015

PIER C

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Abstract-An equivalent circuit model of a finite ground plane coplanar waveguide (FGCPW) interconnect in a metal-insulator-semiconductor (MIS) system for an ultra-broadband monolithic IC is proposed and illustrated. An effective substrate considering Maxwell-Wagner Polarization is suggested and demonstrated. The method of modeling the weak skin effect of the conductor is presented. The accuracy of the equivalent circuit model is evaluated. This proposed FGCPW interconnect equivalent circuit model enables a quick and efficient time domain simulation to estimate the time delay and bandwidth of ultra-broadband ICs.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Development of an Equivalent Circuit Model of a Finite Ground Coplanar Waveguide Interconnect in Mis System for Ultra-Broadband Monolithic Ics

Ehsan¹,

Zhou²,

2015

PIER C

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“…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%

Metallic coplanar resonators optimized for low-temperature measurements

Rahim¹,

Lehleiter²,

Bothner³

et al. 2016

J. Phys. D: Appl. Phys.

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Metallic coplanar microwave resonators are widely employed at room temperature, but their low-temperature performance has received little attention so far. We characterize compact copper coplanar resonators with multiple modes from 2.5 to 20 GHz at temperatures as low as 5 K. We investigate the influence of center conductor width (20 to 100 µm) and coupling gap size (10 to 50 µm), and we observe a strong increase of quality factor (Q) for wider center conductors, reaching values up to 470. The magnetic-field dependence of the resonators is weak, with a maximum change in Q of 3.5% for an applied field of 7 T. This makes these metallic resonators well suitable for magnetic resonance studies, as we document with electron spin resonance (ESR) measurements at multiple resonance frequencies.

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“…Since, the CPW is a two-conductor transmission line with different dielectrics above and below the device plane, it supports a quasi-TEM mode as well as surface wave modes (Riaziat et al, 1990). The surface wave modes lead to energy transfer from the guided wave into the substrate leading to the attenuation of the guided wave.…”

Section: Coplanar Waveguide To Deliver Microwave Power To the Microflmentioning

confidence: 99%