A Novel 3-dB Directional Coupler With Broad Bandwidth and Compact Size Using Composite Right/Left-Handed Coplanar Waveguides

Mao, Shau‐Gang; Wu, Min-Sou

doi:10.1109/lmwc.2007.895694

Cited by 35 publications

(23 citation statements)

References 8 publications

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“…In comparison with the conventional CRLH CLCs, the electrical length of the proposed CLC is more compact than the CRLH CLCs presented in (Islam et al, 2004;Mao & Wu, 2007;Nguyen & Caloz, 2006;Zhang et al, 2008). Moreover, due to the elimination of the stubs in the structure, its width is also smaller.…”

Section: Backward Symmetrical Clcmentioning

confidence: 91%

Coupled-Line Couplers Based on the Composite Right/Left-Handed (CRLH) Transmission Lines

Movahhedi¹,

Keshavarz²

2012

Trends in Electromagnetism - From Fundamentals to Applications

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Section: Backward Symmetrical Clcmentioning

confidence: 91%

Coupled-Line Couplers Based on the Composite Right/Left-Handed (CRLH) Transmission Lines

Movahhedi¹,

Keshavarz²

2012

Trends in Electromagnetism - From Fundamentals to Applications

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“…A greater bandwidth performance can be noted from the reported technique in [6]. The used of multiple crossover shorting strips in left-right handed coplanar waveguides (CRLH) technique are shown in [6].…”

Section: Introductionmentioning

confidence: 96%

“…Various design techniques design have been proposed in order to improve the bandwidth performance of coupler such as; spectral domain technique [3], Lange coupler technique [4], non-uniform line techniques [5], left-right handed coplanar waveguides [6] and multilayer technique [7].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of wideband 3 and 6 dB coupled-line coupler with different grounding techniques

Yusof

Seman

Jamaluddin

2013

2013 IEEE International RF and Microwave Conference (RFM)

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This paper presents the design and analysis of three coupled-line couplers with different grounding techniques, which are common, slotted and floating-potential ground plane. The coupler designs are based on 3 and 6 dB coupling coefficient with center frequency of 6.5 GHz. Their wideband performance are compared and analyzed to observe the effect of grounding techniques. The simulation and analysis are performed using CST Microwave Studio software.

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“…Several methods have been proposed to alleviate the effect of these problems [1][2][3][4][5][6]. Recently, composite left-right handed coplanar waveguides were used to design a broadband quadrature directional coupler [7]. The use of multiple crossover shorting strips complicated the design and the results show a high amplitude imbalance between the two outputs.…”

Section: Introductionmentioning

confidence: 99%

Broadband parallel‐coupled quadrature coupler with floating‐potential ground plane conductor

Abbosh

2008

Micro & Optical Tech Letters

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The design of a parallel‐coupled directional coupler, which has a broadband performance, is presented. A floating‐potential ground plane conductor is used underneath the coupled region to relax the requirement for a narrow slot between the coupled lines and to improve the isolation and return loss performance of the device. The simulated and measured results show that the designed coupler exhibits a coupling of 3 ± 1 dB across the band 4–10.2 GHz, when the spacing between the coupled lines is 0.13 mm, which is easy to manufacture. This broadband coupling is accompanied by an isolation and return loss which are better than 15 dB across the band 3.1–10.6 GHz. The simulated and measured results show good phase stability and flat group delay across the ultra wideband. The designed device has a compact size with a dimension of 30 mm × 20 mm. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2304–2307, 2008; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.23701

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A Novel 3-dB Directional Coupler With Broad Bandwidth and Compact Size Using Composite Right/Left-Handed Coplanar Waveguides

Cited by 35 publications

References 8 publications

Coupled-Line Couplers Based on the Composite Right/Left-Handed (CRLH) Transmission Lines

Coupled-Line Couplers Based on the Composite Right/Left-Handed (CRLH) Transmission Lines

Design and analysis of wideband 3 and 6 dB coupled-line coupler with different grounding techniques

Broadband parallel‐coupled quadrature coupler with floating‐potential ground plane conductor

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