Impedances of Offset Parallel-Coupled Strip Transmission Lines

Shelton, John P.

doi:10.1109/tmtt.1966.1126145

Cited by 84 publications

(31 citation statements)

References 6 publications

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“…The approximate formulas of calculating the coarse dimensions of the coupled -parallel strips can be found in many papers [3] [4], and the formulas are rather accurate under major common conditions. Moreover, the software we are ready to use below have taken full advantages of the formulas mentioned above.…”

Section: The Stimulation Processmentioning

confidence: 99%

A new method of quick synthesis of 3dB coupler

Zhang¹,

Guan²

2016

Proceedings of the 2nd International Conference on Advances in Mechanical Engineering and Industrial Informatics (AMEII 2016)

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Abstract. An analysis of UHF 3dB coupler which is based on the even-odd-mode theory is presented, in which we present a brief description of the even-odd-mode theory and its application in coupled strip transmission line. In particular, as the rapid development of the stimulation technology, we introduce a simple stimulation method based on these theories to design a 3dB coupler in the assistance of simulation softwares, like Advanced Design System and HFSS.

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Section: The Stimulation Processmentioning

confidence: 99%

A new method of quick synthesis of 3dB coupler

Zhang¹,

Guan²

2016

Proceedings of the 2nd International Conference on Advances in Mechanical Engineering and Industrial Informatics (AMEII 2016)

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“…The equations given in [10] are used to find the initial cross-sectional dimensions of the coupler body that implement the required even and odd impedances (Z 0e , Z 0o ) listed in Table 1. These initial crosssectional dimensions are then adjusted by circuit simulation.…”

Section: Directional Coupler Body Designmentioning

confidence: 99%

High Performance 1.8-18GHZ 10-Db Low Temperature Co-Fired Ceramic Directional Coupler

Lopez-Berrocal¹,

de‐Oliva‐Rubio

Márquez-Segura³

et al. 2010

PIER

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Abstract-This paper presents a six-section multi-layer asymmetric 10 dB directional coupler based on offset broadside coupled striplines, using Low Temperature Co-fired Ceramic (LTCC) technology, which operates over a decade bandwidth from 1.8 to 18 GHz. It features high performance transitions between the external signal layer and the buried signal layers, as well as a novel mixed first section to solve the limitations of the coupler access bends. A prototype was manufactured that exhibits a return loss of better than 15 dB, isolation of better than 23 dB and a high coupling accuracy of 10.3±0.6 dB over the 1.8-18 GHz band. This design outperforms previously reported results in terms of bandwidth and shows excellent potential for microwave measurement applications.

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“…Thus, an advisable alternative to design a wide band 3 dB quadrature coupler will be conceiving it as a cascade connection of two 8.34 dB directional couplers [1,2]. This technique requires divide the circuit into two conducting layers separated by a very thin dielectric, and sandwich them between two grounded dielectrics as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The distance "s" denotes the separation between the two lines (imposed by the thickness of the chosen commercial dielectric) [6]. For the specific case of the "Offset" configuration, w o (large couplings) is the separation or dislodgement between the lines, and w c (small couplings) is the distance or length of the dislodgement [2].…”

mentioning

confidence: 99%

“…Thus, the values of c vn are shown in Table 2. These coupling values are then introduced in a code that apply the Bahl equations [6] for the central section and the Shelton equations [2] for the remaining sections. To solve these sets of equations, it is necessary to enter, besides the coupling coefficients, the characteristics and physical dimensions of the material that will be used to synthesize each specific section.…”

mentioning

confidence: 99%

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The Circuit and Network Analysis of Some Signal Separation Structures Constituting Microwave Six-Port Reflectometers

Pina¹,

Jiménez²,

Barragán³

2014

ujeee

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The circuit and network analysis of some signal separation structures constituting a microwave six-port reflectometer are presented. An interconnection of five of these structures composing a six-port network analyzer is also presented. In order to validate the responses, a circuit analysis following the signals from source to detectors, is performed. The complete structure constituting the six-port network analyzer is composed by a 6 dB directional coupler, a four stage 3 dB Wilkinson power divider and three quadrature couplers providing 3 dB, which are formed by two 8.34 dB tandem couplers.

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Impedances of Offset Parallel-Coupled Strip Transmission Lines

Cited by 84 publications

References 6 publications

A new method of quick synthesis of 3dB coupler

A new method of quick synthesis of 3dB coupler

High Performance 1.8-18GHZ 10-Db Low Temperature Co-Fired Ceramic Directional Coupler

The Circuit and Network Analysis of Some Signal Separation Structures Constituting Microwave Six-Port Reflectometers

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