Wideband Filtering Balun on a Novel Hybrid Multimode Resonator With the Functionality of Vertical Transition

Feng, Linping; Li, Zhu

doi:10.1109/tcpmt.2017.2658669

Cited by 32 publications

(17 citation statements)

References 20 publications

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“…According to equations (19)- (22), (34)- (37), (50)- (53), and (66)-(69), the power-division ratios k and terminated resistances R A,B,C,D can be arbitrary. However, in practical, the implemented power-division ratios and terminated resistances are limited by the used technology.…”

Section: A the Restrictions Of Power-division Ratio And Terminated Rmentioning

confidence: 99%

“…For example, 5-port power dividers with an unbalanced input and balanced outputs are proposed in [11], [12], and 4-port power dividers with a balanced input and unbalanced outputs are reported in [13]- [15]. In addition to power dividers, balanced-to-unbalanced (or vice versa) duplexers and filters (also known as the filtering balun) are also presented in [16] and [17]- [19], respectively. Nevertheless, couplers with balanced and unbalanced ports are still untouched, including both the quadrature and rat-race types.…”

mentioning

confidence: 99%

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Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

Jiao

Zhang

et al. 2018

IEEE Trans. Microwave Theory Techn.

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Abstract-For the first time, the six-port quadrature and rat-race couplers with balanced-unbalanced-hybrid ports are proposed. The corresponding design methodology is presented, which is capable of designing the proposed couplers with arbitrary power divisions and terminated resistances. In this paper, four types including quadrature and rat-race couplers are fully analyzed, covering all the application configurations of the balanced/unbalanced ports. Besides, the design equations are rigorously derived, with the final design procedures presented. Eventually, prototypes of the four coupler types are fabricated and experimentally measured. The final results sufficiently validate the proposed methodology.

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Section: A the Restrictions Of Power-division Ratio And Terminated Rmentioning

confidence: 99%

mentioning

confidence: 99%

Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

Jiao

Zhang

et al. 2018

IEEE Trans. Microwave Theory Techn.

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“…There are mainly two methods for design of the MS‐to‐MS vertical transition, namely, vertical via‐hole transition with electrical connection and vialess vertical transition. Over the past few years, extensive research works have been devoted to developing various MS‐to‐MS vialess vertical transitions 1‐17 . For the first method, the via‐hole transitions with electrical connection, 1‐4 and for the second method, such as aperture‐coupled transitions, 5,6 cavity‐coupled transitions, 7‐10 and slotline coupled transitions 11‐17 have been utilized for designing the MS‐to‐MS vialess vertical transition.…”

Section: Introductionmentioning

confidence: 99%

A wideband filtering microstrip‐to‐microstrip vialess vertical transition on CPW MMR

Jiang

Feng

et al. 2021

Int J RF Mic Comp-Aid Eng

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In this paper, a class of wideband filtering microstrip (MS)‐to‐microstrip (MS) vialess vertical transition is proposed and demonstrated on coplanar waveguide (CPW) multi‐mode resonator (MMR) formed on their common ground plane. Then, resonant mode in the proposed CPW MMR can be properly excited by setting a certain offset distance between two feeding points, which realizes good signal transmission between the top‐ and bottom‐layer MS lines over a wide frequency range. After that, to facilitate the design process, a synthesis design method is introduced for application in design of the proposed MS‐to‐MS vialess vertical transition with the prescribed design specifications. Finally, by virtue of the proposed CPW resonator, one design example, that is, a four‐pole wideband filtering MS‐to‐MS vialess vertical transitions, are designed, fabricated, and measured. The expected responses, simulated results and measured results of the proposed four‐pole MS‐to‐MS vialess vertical transition is in reasonably good agreement with each other, thus firmly validating the claimed superior performance of the proposed MS‐to‐MS vialess vertical transition on MMR.

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“…Vertical transition applications were also exemplified in a wideband balun [37], in the study of the parasitic element of interchip vertical interconnection [38], in a failure analysis of TSV in 3D IC [39], and in a proposed bond via array method using wire bonding [40].…”

Section: Introductionmentioning

confidence: 99%

Experimental Verification of Excavated Structure on Multi-Layered Substrates for Millimeter-Wave Signal Vertical Transition Using Copper Balls

Yoshida

Nishikawa

2020

IEEE Access

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This paper presents a vertical transition of millimeter-wave signal for interconnection between multi-layered substrates, which utilizes copper balls for vertical interconnection, as both for electrical connection and physical support. In particular, the copper balls were used to configure a quasi-coaxial transmission line at the vertical interconnection. The key idea was to create an excavated structure at the location of the copper balls to fix it, given that the copper balls slightly fluctuate during reflow soldering when simply placed on a flat surface. Such activity of the copper balls defines large variation in transmission characteristics at millimeter-wave band that produce low yield rate. Practically, with the proposed method of an excavated structure, the location error of the copper balls can be minimized, leading to high reproducibility in determining the copper balls location, and small variation of the transmission characteristics. To verify the method's effectiveness, a prototype having three vertically stacked multi-layered substrates with the excavated structure was fabricated. The excavation had a depth of 90 µm and diameter of 0.45 mm. The copper balls used had a 0.3-mm diameter. Five samples were fabricated and then evaluated by X-ray images and S-parameter measurements. Based on the results, the reflection characteristics of the measurement were less than −10 dB from dc to 97 GHz in the best-case scenario, whereas the variation in the S-parameters was comparatively small up to 70 GHz. Moreover, the X-ray images showed relatively small copper balls location error. These results indicate that the proposed excavated structure is effective for millimeter-wave vertical interconnections using copper balls, in small wireless terminal applications.

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Wideband Filtering Balun on a Novel Hybrid Multimode Resonator With the Functionality of Vertical Transition

Cited by 32 publications

References 20 publications

Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

A wideband filtering microstrip‐to‐microstrip vialess vertical transition on CPW MMR

Experimental Verification of Excavated Structure on Multi-Layered Substrates for Millimeter-Wave Signal Vertical Transition Using Copper Balls

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