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In this paper, we propose a high-performance method to suppress global electromagnetic noise coupling in 3D through silicon via (TSV) system in package (SiP). This technique needs to form a periodic shielding structure in 3D SiP, which consists of contact arrays, grid ground planes and ground TSV array. Contact arrays and grid ground planes can suppress noise coupling in the shallow substrate and...
This work proposes a DSP technique to mitigate the interference-induced spurious tones coupled to the digitally controlled oscillator (DCO) of a digital phase locked loop (DPLL). We leverage the digitized phase information at the time-to-digital converter (TDC) output, and formulate an adaptive algorithm to identify the interference pattern from any electrical or magnetic coupling path, and inject...
We developed a dual-wavelength optical imaging with laser speckle contrast imaging (LSCI) and intrinsic optical signals imaging (IOSI) for cerebral blood flow (CBF) and hemoglobin oxygenation simultaneously recording, and examined the effects of AUDA in ischemia.
Wireless power transfer (WPT) technology are hot topic in current researches in SMPS. This paper focuses on the structure of magnetic coupling system, which regarded as the most significant part in WPT system. A new magnetic structure with good position robust and low flux leakage to nearby space was proposed comparing to the traditional spiral structure. The simulation results, magnetic evaluation...
In this paper, we have developed a new structure to suppress 3D noise coupling in 3D silicon substrates. This technique consists of contact arrays and grid ground planes. The contact arrays suppress the low-frequency noise while the grid ground suppresses the high-frequency noise. This isolation method can be used for noise suppression between circuits and/or TSVs, and it can be applied in 3D ICs...
Wireless power transfer (WPT) is widely used in portable devices with the advantage of flexibility and convenience. This paper proposes a cooperative multiple coil matrix transmitter (CMCM) structure. This design allows the mobile device receiver coil to be freely placed above the wireless charging pad which can select the appropriate transmitter coils to activate according to the location of the...
The electromagnetic interference (EMI) filter plays an important role in the EMI noise suppression. As the development of the switch mode power supply (SMPS), the power density of the SMPS improves every year. As a result the distance between components becomes smaller and smaller. The near-field magnetic coupling between components becomes larger and larger. However there are fewer studies about...
A novel topology scheme for wireless power transfer (WPT) applications whose transmitter consists of dual opposite phase class E inverters was proposed. Series-series compensation topology was applied for magnetic coupling structure. Constant output voltage at secondary side can be easily realized by inserting a π transconductance at the output of inverter to ensure the primary currents to be constant...
The conducted EMI simulation plays an important part in the SMPS in the product design. The analysis of common mode noise is much more complex than differential mode noise. The CE simulation accuracy depends on the accuracy of CM mode noise. CM noises are determined by the electric coupling between the voltage jump point and the ground. Traditional the CM models of the electric coupling between the...
Wireless power transfer (WPT) system is to provide power transmission via near field magnetic resonant coupling between the transmitter and the receiver with the same frequency. In WPT system the most important parameter is efficiency. This paper proposes different cooperative transmitter matrixes with multiple coils. This design enables receiver coil to be freely placed and charged above the wireless...
There is the coupling relationship between financial innovation process system and environment system, which is embodied by the complex interactive stress and constraint mechanism between them. In this paper, financial innovation system as an example, is analyzed by Grey Model (GM(1, 1)) and Back Propagation Neural Network (BPNN) model, and then the coupling coordination situation between the financial...
The objective of this research was to design controllers for balancing a rotary inverted pendulum. The controllers designed by the pole-placement method and the linear-quadratic regulator (LQR) method were discussed, and experiments and simulation were conducted to study the performance of the controllers. By using an L9 orthogonal array proposed in the Taguchi methods, the appropriate feedback gain...
This paper presents a wideband microstrip bandpass filter with wide stopband. To achieve the wide stopband, a multi-stub resonator is introduced. The proposed resonator features high design freedom and can provide multiple transmission zeros for good near-passband selectivity and deep stopband rejection. The resonator is investigated via transmission-line model and a bandpass filter is fabricated...
Mobile and portable devices are gaining more and more popularity. One key issue regarding the comfortable use of such devices is the need to recharge them rapidly because of their limited battery capacity. In [1]the writer discussed the future of charging the mobile devices wirelessly and concluded that it is going to be a practical reality.
An innovative prosthetic hand prototype is presented in this paper. To increase the grasping stability, an underactuated finger is embedded in a traditional gripper. There are a total of three motors employed in the hand system: the gripper, the embedded finger, and the wrist. The preliminary performance shows that this prosthetic hand is capable of performing various daily jobs such as turning a...
Tight-banding approach was found to be an effective approach to gain the main feature of a coupled-cavity structure, frequency and general distribution pattern for example. A two-cavity-coupled system was shown as an example.
Selectively oxidized ring defect photonic crystal vertical cavity surface emitting laser (RD-PCVCSEL) is demonstrated. The device achieves coherent coupling over the entire continuous-wave current range.
As the power density of power module increases, the components have to be placed more and more closely and the near field coupling will become more obvious. An integrated coupling inductors scheme had been introduced by utilizing their near field coupling effects among inductors for multi-phase VRM application. Some considerations were taken such as component distance, height, air gap layout and partial...
Selectively oxidized ring defect photonic crystal vertical cavity surface emitting laser (RD-PCVCSEL) is first demonstrated. The device achieves coherent coupling over the entire continuous-wave current range.
Tunable bandwidth, tunable line-shape filters are realized by incorporating Mach-Zehnder interferometers as directional coupler elements within higher order microring resonators. A flat-top bandwidth tuning range of 2.7 GHz to 21 GHz is demonstrated.
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