Design of a Common Mode Filter by Using Planar Electromagnetic Bandgap Structures

Paulis, Francesco de; Raimondo, L.; Connor, Samuel; Archambeault, Bruce; Orlandi, Antonio

doi:10.1109/tadvp.2010.2046167

Cited by 39 publications

(28 citation statements)

References 17 publications

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“…Parametric simulations including via length and the number of patches of the EBG structure were carried out using the 3D full-wave simulator CST Microwave Studio (MWS). As mentioned in [3], the accuracy of commercial full-wave simulators such as CST MWS and Ansoft HFSS in analysing EBG structures has been well proven [4,5] where strong agreement with measurement was obtained. Results: Fig.…”

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confidence: 87%

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Mitigation of noise coupling on RF cable using electromagnetic bandgap structures

Park

Ahn

2011

Electron. Lett.

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Noise coupling to radio frequency (RF) cable in laptop computers deteriorates the receiving sensitivity of wireless local area network (WLAN) operation. Proposed originally is a concept for reducing noise propagation along RF cable using electromagnetic bandgap (EBG) structures. The proposed EBG structure applied on RF cable allows achieving more than 20 dB noise suppression within the frequency range of WLAN application.Introduction: From the advent of digital convergence, mobile electronic devices have various wireless digital communication services. To provide fast wireless data transmission, the clock speed of mobile devices increases rapidly up to gigahertz level. This trend boosts electromagnetic noise generation from mobile devices, and consequently, worsens the electromagnetic interference (EMI) problem. In addition, radio frequency interference (RFI), which means electromagnetic noise makes interferences in the radio frequency bands within a wireless device, is a serious bottleneck in obtaining receiving performance.Recently, portable personal computers (PCs) such as netbook and tablet PCs have raised public interest because of the convenience of their mobility. These portable PCs commonly have wireless local area network (WLAN) systems for connecting to the Internet service. These digital communications normally require a receiving power sensitivity around or below -100 dBm, which is commonly lower than the noise level emitted from a printed circuit board (PCB).For WLAN service, most of the latest laptop computers have a smallsize dual-band metal-strip antenna mounted at the top edge of the liquid crystal display (LCD) panel as depicted in Fig. 1. This antenna should provide a sufficient bandwidth for modern high-throughput WLAN systems based on the IEEE 802.11n . The WLAN antenna is connected to the RF module on the main board via a long coaxial cable. Even though the shielded coaxial cable is usually adopted for RF signal transmission, it is frequently experienced that the receiving performance of WLAN changes according to the small difference of the cable position [1]. Noises radiated from high-speed signals or power/ground planes on LCD and main boards can induce the common-mode current on the outer shield conductor of the coaxial cable. Owing to the outer shield conductor normally being cut off at the feeding point of the antenna, the common-mode current can flow on the inner surface of the shield conductor, which in turn can induce the inner signal conductor of the coaxial cable. The coupled noise on the RF cable deteriorates the receiving performance of WLAN. Conventionally, to reduce the commonmode noise current flowing on the cable, a common-mode filter such as a ferrite choke has been widely used. Because their usage is limited in the gigahertz range, the ferrite choke is no longer suitable for use in the coaxial cable carrying GHz RF signals.

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confidence: 87%

“…Electromagnetic bandgap on RF cable: For a decade, EBG structures have been mainly employed for achieving significant noise reduction on multilayer PCBs and packages [2][3][4][5]. The basic geometry of the EBG consists of a mushroom-like structure and a coplanar-type one.…”

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confidence: 99%

Mitigation of noise coupling on RF cable using electromagnetic bandgap structures

Park

Ahn

2011

Electron. Lett.

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“…Many contributions have been proposed for designing EBG geometries to reduce noise propagation within the power planes in PCB and packages [17][18][19][20][21]. They have been studied also as a simple way to reduce the common mode noise current and thus unwanted radiation from PCBs [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Accurate and Efficient Analysis of Planar Electromagnetic Band-Gap Structures for Power Bus Noise Mitigation in the GHZ Band

Orlandi

2012

PIER B

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Abstract-Noise reduction in PCB is a major concern in the present digital electronic systems with data rate beyond 10 Gbps. The noise, due to simultaneous switching noise, radiation from signal vias crossing the planes, etc. can propagate within parallel plane cavity at its resonant frequencies, thus allowing coupling between integrated circuits (ICs) far from each other. Electromagnetic band-gap (EBG) structures are largely employed as noise reduction technique. This paper presents a quick and efficient analytical approach for evaluating the EBG noise reduction performances in terms of band-gap limits. The study is based on the physics behavior of the planar EBG structures, focusing on its resonant properties. The resonant modes of the EBG cavity are affected by the additional inductance of the patterned plane respect to the case of the ideal solid plane cavity. The formulas provided, based on the quantification of such inductance, can be easily implemented and employed for a quick layout design of power planes in multilayer PCBs, as shown in a practical example of a partial EBG plane.

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“…SSN is recognized as one of the most significant issues in modern high speed digital systems design. Recently, various planar electromagnetic band-gap (EBG) structures have been proposed and applied in power/ground plane pairs to mitigate SSN [2][3][4][5][6][7][8][9][10][11][12]. They consist of two metallic layers of the multilayer PCB, one of which is solid (ground plane) and the other a patterned one (power plane).…”

Section: Introductionmentioning

confidence: 99%

“…[3]. Many researchers have analyzed the electromagnetic behavior of planar EBG structures when designed on a PCB [2][3][4][5]. Paper [2] gives a simple and efficient design procedure for planar EBG structures which is sized from the band-gap starting and ending frequencies.…”

Section: Introductionmentioning

confidence: 99%

A Hierarchical Tree Shaped Power Distribution Network Based on Constructal Theory for Ebg Structure Power Plane

Huang¹,

Liu²,

Guo³

2012

PIER B

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Abstract-In this paper, a tree-shaped power distribution network is designed based on constructal theory for planar EBG structure power plane on PCB, in order to optimize DC performance. Planar EBG structures suppress noise, and the network provides currents to them. This network is composed of hierarchical metal paths. The geometric parameters can be optimized based on the concept of constructal theory. The optimal performance consists of constructing the given area in a sequence of building blocks from the smallest size toward larger sizes hierarchically. In the meantime, a PCB power plane is developed with 2nd order tree-shaped constructal network. Analysis illustrates that EBG power plane with constructal tree shaped network has multifunctions of low voltage drop, current equidistribution and effective noise isolation.

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Design of a Common Mode Filter by Using Planar Electromagnetic Bandgap Structures

Cited by 39 publications

References 17 publications

Mitigation of noise coupling on RF cable using electromagnetic bandgap structures

Mitigation of noise coupling on RF cable using electromagnetic bandgap structures

Accurate and Efficient Analysis of Planar Electromagnetic Band-Gap Structures for Power Bus Noise Mitigation in the GHZ Band

A Hierarchical Tree Shaped Power Distribution Network Based on Constructal Theory for Ebg Structure Power Plane

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