In modern electronic products, the noise from high-speed digital parts is likely to interfere with nearby receivers, causing radio-frequency interference (RFI) issues. this paper, equivalent dipole-moment models and a decomposition method based on reciprocity theory are proposed being used together estimate coupling source victim antennas. The extracted near fields of by solving inverse problem. tangential electromagnetic Huygens's surface, which enclose antenna, can be calculated these...

A physics-based dipole moment source reconstruction is proposed to estimate the near-field coupling between a liquid crystal display panel cellphone's cellular antenna. Based on understanding of current distribution source, magnetic reconstructed replace real radiation that located at edge flexible printed circuit board. To characterize from equivalent victim antenna, noise transfer coefficient proposed. The can be calculated scanning and direct measurements using wideband source. are...

In this article, for the first time, we propose a transformer network-based reinforcement learning (RL) method power distribution network (PDN) optimization of high bandwidth memory (HBM). The proposed can provide an optimal decoupling capacitor (decap) design to maximize reduction PDN self- and transfer impedance seen at multiple ports. An attention-based is implemented directly parameterize decap policy. optimality performance significantly improved since attention mechanism has powerful...

This article presents a new optimization method for complex power distribution networks (PDNs) with irregular shapes and multilayer structures using deep reinforcement learning (DRL), which has not been considered before. A fast boundary integration is applied to compute the impedance matrix of PDN structure. Subsequently, DRL algorithm based on proximal policy (PPO) proposed optimize decoupling capacitor (decap) placement by minimizing number decaps while satisfying desired target...

In this paper, we propose a model for 3-D stacked on-chip power distribution networks (PDNs) in through silicon via (TSV)-based memory ICs that includes the effects of power/ground TSVs (P/G TSVs), decoupling capacitors (on-chip decaps), and substrate. modeling procedure PDNs, distributed RLGC-lumped an PDN, including decaps substrate, is proposed. Additionally, P/G TSV pair introduced. The proposed PDN combines models PDNs with pairs hierarchical order segmentation method. are successfully...

The transfer functions relating supply voltage fluctuations to jitter are analytically derived in closed form expressions for a single-ended buffer. analytic from linear differential equation obtained asymptotic inverter I-V curves. validated by comparison with HSPICE simulations. estimated is compared the simulated using eye diagrams single-frequency and multitone fluctuations.

In this paper, we propose a compact and wideband electromagnetic bandgap (EBG) structure using defected ground (DGS) to significantly enhance the suppression of power/ground noise coupling in multilayer packages printed circuit boards. The proposed EBG is implemented simply by adding rectangular-shaped DGS which etched periodically onto plane without changing any other geometrical parameter from mushroom-type structure. effects on f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This article demonstrates an inaudible attack on smart speakers using electromagnetic interference (EMI). The EMI induces voltages the order of a few millivolts conductors, which are then converted into baseband signals by exploiting inherent nonlinearity microphones. signal is specially preprocessed to minimize useless harmonics generation at microphone output signals, significantly improves recognition rate as well nullify previous countermeasures based detection. sensitive carrier...

An analytical methodology to calculate the probability density functions (PDFs) for step pulse response of a single-ended buffer with arbitrary power-supply voltage fluctuations is proposed. To validate theory, silicon IC noise-aggressing buffers and victim was designed, fabricated, assembled in printed circuit board (PCB). The overall power distribution network (PDN) PCB modeled from impedance measurements. PDFs were calculated validated by comparisons HSPICE experimental results. obtained...

Selection of decoupling capacitors (decaps) is important for power distribution network (PDN) design in terms lowering impedance and saving cost. Good PDN designs typically mean satisfying a target with as less decaps possible. In this paper, an inductance-based method utilized to calculate the port priority fist, afterwards deep reinforcement learning (DRL) neural (DNN) applied optimize assignment on prioritized locations. The DRL algorithm can explore by itself without any prior physical...

A new method to visualize the coupling path is proposed help solve electromagnetic compatibility problems. By using reciprocity theorem and concept of reaction, density coefficient (CC) defined. Integration CC on closed surfaces equals coupled power at receiver. plotting a set from source receiver, path, which traces flow, can be visualized. All visualization procedures performed in full-wave simulation tool, thus making convenient use. To validate demonstrate potential benefits method,...

This article presents an efficient methodology based on boundary integration to calculate the dc and ac impedance of power distribution networks (PDNs) for arbitrary-shape multilayer printed circuit boards (PCBs). The proposed method adopts a element extract inductances arbitrary parallel-plane shapes. Subsequently, equivalent formed by via plane capacitances is solved using node voltage method. By merging parallel serial simplifying circuit, computation time can be significantly reduced...

In this article, a multi-physics modeling methodology is presented for predicting the acoustic noise induced by multi-layer ceramic capacitor (MLCC) in mobile electronic devices. The process involves using prescribed to extract equivalent source at resonance frequencies of printed circuit board (PCB) and then deriving broadband Electrical Input Mechanical Output (EIMO) model. Subsequently, obtained EIMO model integrated into PCB vibration simulations, resulting data are used simulations....

This study is to estimate the near-field coupling in mixed digital/RF circuit design for modern high speed electronic systems. The noise source IC first modelled by physics-based dipole moment model with data obtained from a scanning plane. victim RF antenna full-wave simulation tool and further as Huygens's equivalent source. tangential fields on box can be calculated negligible multiple scattering effect assumption. then surface integration of Poynting vector at receiving port. A studied...

Supply fluctuation is one of the most significant factors that cause jitter in high-speed I/O links. The traditional SPICE simulation or measuring method for power supply induced quite time-consuming and draining on resources. buffer information specification (IBIS) model a popular standard electronic behavioral specifications digital integrated circuit characteristics. Analytic transfer functions fluctuations are derived by solving two-order differential equations based IBIS current versus...

Near-field coupling in mixed digital/RF circuit design is critical to system sensitivity for modern high speed electronic systems. This paper presents radiation noise source modeling methods and applies equivalent models near-field estimations. The can be either modeled by physics-based dipole moment model or Huygens's with data obtained from scanning. fundamental principles of both are first studied simulation. A clock buffer integrated as a model. tangential fields on box calculated...

Precise analytical models of power supply noise induced jitter (PSIJ) at inverter chains are proposed. Based on the piecewise linear approximated I-V curve model, local PSIJ transfer functions rising and falling edges derived. The total function an chain output is then estimated by alternately accumulating edges. several assumptions, full model significantly simplified, which provides physical insights chains. Accuracy proposed successfully validated SPICE simulations with 130 nm CMOS...

In this article, acoustic noise of printed circuit board (PCB) introduced by multilayer ceramic capacitors (MLCCs) on power distribution network (PDN) is studied. The correlation PDN rail noise, MLCCs and PCB dynamic characteristics, demonstrated a real mobile product through electrical, vibrational, measurements. Two measurement methodologies are proposed to identify the problematic rail. One method analyzes vibration properties with external electrical signal applied board. Other detects...

A method to optimize the IC placement in mobile devices from RF interference perspective is proposed. The coupling an antenna estimated by combining equivalent dipole moment source and reciprocity, which facilitates understanding of physics design insight for devices. Based on proposed method, optimal place noisy ICs can be quantitatively determined each frequency interest.

Ahstract- In this paper, the dipole-moment based reciprocity method is used to perform desense prediction and mitigation from DDR noise source nearby RF antenna. The signals between application processor memory IC. Radiation physics of analyzed by understanding current flow. Firstly, random nature using measurement data. Based on data, setup near field scanning further determined. procedures are decomposed into two steps: forward problem reverse problem. problem, approximately regarded as a...

This article proposes a jitter-aware decoupling capacitors placement optimization method that uses the genetic algorithm (GA). A novel for defining target function in regard to power delivery network (PDN) and source-induced jitter (PSIJ) based on GA-based tool is proposed. The proposed can provide an optimum economic solution number of use PDN reach impedance. Then, by modifying with our method, regarding PSIJ be obtained. analytical expressions are derived conjunction resonant cavity model...