A New Broadband Marchand Balun Using Slot-Coupled Microstrip Lines

Tseng, Chao‐Hsiung; Hsiao, Yu-Chih

doi:10.1109/lmwc.2010.2040216

Cited by 61 publications

(34 citation statements)

References 9 publications

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“…[10] 5:1 ±0.5 ±5 0.18λ g x 0.09λ g [11] 2.6:1 ±0.69 ±1.4 0.5λ g x 0.17λ g [12] 1.9:1 ±0.5 ±1.5 0.23λ g x 0.05λ g [21] 10:1 ± 0.3 ± 6 0.15λ g x 0.11λ g [16] 9:1 ± 1 ± 8 0.17λ g x 0.11λ g Our work 23:1 ± 0.4 ± 10 0.22λ g x 0.22λ g…”

Section: Balun Prototype Simulation and Measurement Resultsunclassified

“…It is difficult to maintain high even-mode impedance over the bandwidth ratio of 10 to 1. Therefore, planar Marchand baluns typically have a bandwidth ratio of less than 10 to 1 [10][11][12][13][14][15][16][17][18]. The balun in [20] has a wide bandwidth from 1 MHz to 3 GHz, but it is designed using three ferrite cores that result in a large and bulky component.…”

Section: Introductionmentioning

confidence: 99%

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23:1 Bandwidth ratio quasi‐lumped component balun on a multilayer organic substrate

Pham

et al. 2016

IET Microwaves, Antennas & Propagation

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Abstract:In this paper, we present the design and development of a novel ultra-wideband coupled line balun on a multilayer Liquid Crystal Polymer (LCP) substrate. The balun is designed using a quarter wavelength (λ/4) asymmetric broadside coupled line. The defected ground structure (DGS) and a lumped phase compensation circuit are developed to achieve wide bandwidth performance for the balun. The balun has a measured bandwidth ratio of 23:1, from 80 MHz to 1860 MHz. Within the operating bandwidth, the experimental results demonstrate that the balun achieves an input return loss of better than 10 dB, an insertion loss of better than 1 dB, an amplitude imbalance of better than ±0.4 dB and a phase imbalance of better than ±10 degrees. The size of the balun is 40.64 mm x 40.64 mm or 0.22 λg x 0.22 λg, where λg is the guided-wavelength at the center frequency of 970 MHz.

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Section: Balun Prototype Simulation and Measurement Resultsunclassified

Section: Introductionmentioning

confidence: 99%

23:1 Bandwidth ratio quasi‐lumped component balun on a multilayer organic substrate

Pham

et al. 2016

IET Microwaves, Antennas & Propagation

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“…It has been extensively studied for active amplifiers, balanced mixers, passive filter [2] and even antennas [3]. Several types of baluns are available among the open literature, such as the Marchand balun [4][5][6], powerdivider balun [7,8], branch-line balun [9] and metamaterial balun [10]. Highly integrated circuits with stable communication quality strongly require wideband and miniaturized RF/ microwave devices.…”

Section: Broadband Balun Using Fully Artificial Fractal-shaped Crlh Tlmentioning

confidence: 99%

“…Although baluns achieved significant miniaturization in [4,5], the multilayer design suffered thick profile, complicated structure and high-cost fabrication. As to the bandwidth enhancement of baluns, we have also witnessed several approaches such as using broadband Schiffman phase shifter [3], slotcoupled microstrip lines [6], substrate integrated waveguide [8], phase-adjusting CRLH TL [7] and metamaterial TL [10]. Nevertheless, these baluns occupy a large circuit area.…”

Section: Broadband Balun Using Fully Artificial Fractal-shaped Crlh Tlmentioning

confidence: 99%

Compact Metamaterials Induced Circuits and Functional Devices

Xu¹,

Wang²,

Cai³

et al. 2017

Metamaterials - Devices and Applications

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In recent years, we have witnessed a rapid expansion of using metamaterials to manipulate light or electromagnetic (EM) wave in a subwavelength scale. Specially, metamaterials have a strict limitation on element dimension from effective medium theory with respect to photonic crystals and other planar structures such as frequency selective surface (FSS). In this chapter, we review our effort in exploring physics and working mechanisms for element miniaturization along with the resulting effects on element EM response. Based on these results, we afford some guidelines on how to design and employ these compact meta-atoms in engineering functional devices with high performances. We found that some specific types of planar fractal or meandered structures are particularly suitable to achieve element miniaturization. In what follows, we review our effort in Section 1 to explore novel theory and hybrid method in designing broadband and dual band planar devices. By using single or double such compact composite right-/left-handed (CRLH) atom, we show that many microwave/RF circuits, i.e., balun, rat-race coupler, power divider and diplexer, can be further reduced while without inducing much transmission loss from two perspectives of lumped and distributed CRLH TLs. In Section 2, we show that a more compact LH atom can be engineered by combining a fractal ring and a meandered thin line. Numerical and experimental results demonstrate that a subwavelength focusing is achieved in terms of smooth outgoing field and higher imaging resolution. Section 3 is devoted to a clocking device from the new concept of superscatterer illusions. To realize the required material parameters, we propose a new mechanism by combining both electric and magnetic particles in a composite meta-atom. Such deep subwavelength particles enable exact manipulation of material parameters and thus facilitate desirable illusion performances of a proof-of-concept sample constructed by 6408 gradually varying meta-atoms. Finally, we summarize our results in the last section.

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“…The research in this area has been focused on the infinite-width microstrip lines (Bryant & Weiss, 1968;Farrar & Adams, 1970) and rectangular sections of microstrip (Cruzan & Garver, 1964;Garver & Rosado, 1962;Gunston, 1972;Levy, 1961;Sansalone & Spencer, 1961). It is possible to determine characteristic parameters of those strip lines as well as symmetrically or asymmetrically coupled strip lines (even or odd modes) (Amirhosseini & Cheldavi, 2003;Chen et al, 2005;Liamas-Garro et al, 2005;Ponchak et al, 2005;Sun & Zhu, 2005;Tseng & Hsiao, 2010).…”

Section: Introductionmentioning

confidence: 99%

Hybrid Boundary Element Method and Quasi-TEM Analysis of Two-Dimensional Transmission Lines—Generalization

et al. 2013

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The hybrid boundary element method, based on the equivalent electrodes method and the boundary element method, is presented in this article. This method is applied on several examples for calculating the characteristic impedance of transmission lines. It should be emphasized that the combination of the equivalent electrodes method and a new variant of the boundary element method can be efficiently implemented in quasi-transverse electromagnetic analysis of transmission lines without loss of accuracy. All results for the characteristic impedance of the observed transmission lines are compared to corresponding ones obtained by the finite-element method.

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A New Broadband Marchand Balun Using Slot-Coupled Microstrip Lines

Cited by 61 publications

References 9 publications

23:1 Bandwidth ratio quasi‐lumped component balun on a multilayer organic substrate

23:1 Bandwidth ratio quasi‐lumped component balun on a multilayer organic substrate

Compact Metamaterials Induced Circuits and Functional Devices

Hybrid Boundary Element Method and Quasi-TEM Analysis of Two-Dimensional Transmission Lines—Generalization

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