Single-mode operation of coplanar waveguides

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

doi:10.1049/el:19870888

Cited by 24 publications

(7 citation statements)

References 5 publications

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“…m where S,," is the Kronecker delta, the function i ( a n ) is [see eq. (H)]: (7) and &$a,) stands for the sine-Fourier transforms of the basic functions in ( 3 ) :…”

Section: Methods Of Analysismentioning

confidence: 99%

“…By applying Parseval and convolution theorems, it is possible to write: (26) But these series are exactly the same as those appearing in eqs. (7) and (8) …”

Section: Ementioning

confidence: 99%

“…In practice, this basic configuration does not really account for the actual structure. In fact, the effects of the finite substrate thickness [ 5 ] , upper and/or back shielding and boxing [6], finite extent ground planes [7,8], or multilayer dielectrics [9,10]-used in MMIC applications-should be incorporated in the analysis. In any case, simple or modified CPWs are attractive due to some interesting features which make them more suitable than microstrip for many applications: easy seriesshunt connections, low crosstalk, low radiation, miniaturization capabilities, and wider impedance range is achievable [l-3,6,8], among others.…”

Section: Introductionmentioning

confidence: 99%

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Quasi‐analytical static solution for the generalized boxed coplanar waveguide

Drake

Medina²,

Horno

1994

Int. J. Microw. Mill.‐Wave Comput.‐Aided Eng.

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A quasi-analytical method for computing the quasi-static-TEM parameters of the generalized coplanar waveguide (GCPW) is reported. The structure is assumed to be enclosed in a rectangular frame and embedded in a layered medium. Essentially, the method is an analytically enhanced spectral domain formulation. Its application leads to virtually exact results in very short CPU times, making it suitable for CAD purposes. Although the method is somewhat more time consuming than conformal mapping approaches, it is a useful alternative because of its exactness and ability to deal with multilayer structures. 0 1994 John Wiley & Sons, Inc.

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“…m where S,," is the Kronecker delta, the function i ( a n ) is [see eq. (H)]: (7) and &$a,) stands for the sine-Fourier transforms of the basic functions in ( 3 ) :…”

Section: Methods Of Analysismentioning

confidence: 99%

“…By applying Parseval and convolution theorems, it is possible to write: (26) But these series are exactly the same as those appearing in eqs. (7) and (8) …”

Section: Ementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quasi‐analytical static solution for the generalized boxed coplanar waveguide

Drake

Medina²,

Horno

1994

Int. J. Microw. Mill.‐Wave Comput.‐Aided Eng.

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show abstract

“…A low dielectric constant of Parylene-N lowers the line capacitance per length and thus increases the characteristic impedance of the CPW transmission line. Due to the thick dielectric layer, the microstrip mode weakens and the quasi-TEM mode becomes the dominant mode in the CPW line [14], [15]. The characteristic impedance of such low-loss CPW lines is independent of the dielectric layer thickness (and its variations) and is set by two parameters, center conductor width , and the distance between the center conductor and the ground planes .…”

Section: A Cpw Transmission Linesmentioning

confidence: 99%

Mask Programmable CMOS Transistor Arrays for Wideband RF Integrated Circuits

Rabieirad

Martinez²,

Mohammadi

2009

IEEE Trans. Microwave Theory Techn.

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Abstract-A mask programmable technology to implement RF and microwave integrated circuits using an array of standard 90-nm CMOS transistors is presented. Using this technology, three wideband amplifiers with more than 15-dB forward transmission gain operating in different frequency bands inside a 4-22-GHz range are implemented. The amplifiers achieve high gain-bandwidth products (79-96 GHz) despite their standard multistage designs. These amplifiers are based on an identical transistor array interconnected with application specific coplanar waveguide (CPW) transmission lines and on-chip capacitors and resistors. CPW lines are implemented using a one-metal-layer post-processing technology over a thick Parylene-N (15 m) dielectric layer that enables very low loss lines ( 0.6 dB/mm at 20 GHz) and high-performance CMOS amplifiers. The proposed integration approach has the potential for implementing cost-efficient and high-performance RF and microwave circuits with a short turnaround time.

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“…An interesting transition structure which provides a gradual transformation of the electric and magnetic fields between a CPW or conductor-backed CPW and a microstrip or a stripline was proposed in [11,12]. It exploits results coming from the analysis of normal propagation modes in conductor-backed CPW structures [13,14] to assume the characteristic impedance of conductor-backed CPW as given by the combination of two characteristic impedances associated to the CPW mode and the microstrip mode, respectively. These impedances are strongly influenced by the conductor-backed CPW parameters dimensions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Multi-Step Coplanar Waveguide-to-Microstrip Transition

Costanzo¹

2011

PIER

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Abstract-A synthesis procedure is developed in this paper for the design of N-step coplanar waveguide-to-microstrip transitions. An equivalent circuit approach is adopted to model the structure in terms of N cascaded ABCD matrices relative to the N coplanar waveguide sections forming the transition. A constrained optimization problem is formulated as the minimum finding of a proper functional to accurately determine the transition dimensions by imposing an upper bound to the return loss within a prescribed frequency band. An iterative Nstep procedure is developed to find the optimization problem solution. Numerical results on millimeter-wave transition configurations are provided to demonstrate the effectiveness of the proposed synthesis method. A back-to-back transition prototype with N = 3 sections is then fabricated and characterized in terms of measured S-parameters to experimentally demonstrate a return loss better than 10 dB in the frequency range from 1 GHz up to 40 GHz.

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Single-mode operation of coplanar waveguides

Cited by 24 publications

References 5 publications

Quasi‐analytical static solution for the generalized boxed coplanar waveguide

Quasi‐analytical static solution for the generalized boxed coplanar waveguide

Mask Programmable CMOS Transistor Arrays for Wideband RF Integrated Circuits

Synthesis of Multi-Step Coplanar Waveguide-to-Microstrip Transition

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