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In this paper, a mass production solution of integrated passive device utilized on radio frequency communication systems was proposed through a glass panel platform where the size could be up to 408 mm * 512 mm and provided 1-layer capacitor and 1-layer inductor for IPD design. The structure characterization of panel-based IPD was performed as well as the electrical stability and RF functional test...
As mobile and handheld devices become more functionalities, required to accommodate more frequency bands, and to meet small form factor requirements. IPD (Integrated Passive Device) offers small form factor, and high performance benefits for RF solutions. To achieve a high performance RF filters, high-Q inductor is a key factor. A possible best high-Q inductor can be achieved is by Glass based solenoid...
It is demonstrated that the high quality factor with multi-layers of thick metal spiral inductors and low harmonics power level can be achieved by using a mature glass substrate technology. The thicker copper metal stacking for inductor is greater than 30 µm. The quality factor of inductors can achieve 70-100 in this study. In addition, the compact size of RF diplexer with thicker copper layer applied...
RF passive components continue to play an important role in the RF front-end of modern mobile phones. Glass substrate is a good candidate for integrated passive device (IPD) due to its low profile and superior RF performance thanks to low dielectric loss, loss dissipation factor and high resistivity of glass substrate. The quality factor of planar spiral inductors in IPD normally can achieve 50, but...
It is demonstrated that the high quality factor of thick metal spiral inductors and passive circuits with low induced harmonics power level can be achieved by using a mature glass substrate technology. It is very critical and helpful with lower harmonic power level for the FEM development of current and next generation's commercial 4G carrier aggregation system.
In this paper, an adaptive thresholding algorithm for detecting multi-human using an impulse radio ultra-wideband (IR-UWB) radar is proposed. The magnitude of the received signal shows trend of decreasing with the increasing number of the people in the interesting area of a radar owing to the scattering by the multi-human. Conventional multi-human detection algorithms do not consider this effect....
In this paper, the compact size and low profile integration passive device (IPD) diplexer is designed based on IPD process. The overall size of IPD diplexer is 1.0mm by 0.5mm with thickness less than 0.3mm with solder ball. Through electromagnetic (EM) solver, the insertion loss on low-band and high-band is below 1dB and better than LTCC solution. In addition, its attenuation is excellent compared...
It is demonstrated that the high quality factor of thick metal spiral inductors, 3D solenoid inductor and low harmonics power level can be achieved by using a mature glass substrate technology. The quality factor of inductors in a 2D/3D type can achieve 70∼100 in this study. The harmonics power level is measured along transmission line and 2nd /3rd harmonics can be below −110 dBm at 30 dBm input power...
With the advent of multi-core architectures, worst case execution time (WCET) analysis has become an increasingly difficult problem. In this paper, we propose a unified WCET analysis framework for multi-core processors featuring both shared cache and shared bus. Compared to other previous works, our work differs by modeling the interaction of shared cache and shared bus with other basic micro-architectural...
In this paper, a facial pose estimation based on synergetic computer approach is introduced. Previous researches have proven that basic synergetic computer is not sufficient to support advanced tasks, especially in the field of facial pose estimation problem, which require more than one pattern to be combined into a single class. In this work, we first investigate one of the extensions of basic synergetic...
Many polymer based materials, such as molding compound and underfill, are commonly used in plastic encapsulated packages. In spite of many advantages, most of them, however, are hydrophilic and absorb moisture when exposed to a humid environment. Moisture absorption induces swelling and deformation in a package and leads to failure in some cases. For example, when polymer materials swell upon absorbing...
Several strategies that were employed for developing next-generation embedded Hard IP are reviewed. Mixed signal Hard IP developed for a multi-protocol serial interface physical layer at 0.622Gbps to 3.125Gbps was redeployed for 0.622Gbps to 6.375Gbps data rates. Ensuring quality meant adopting a strongly modular approach to design and verification. The configuration space of the Hard IP had to be...
Use of the closely matching emission of GaAs and spectral response of silicon detectors is proposed as an optical method of monitoring overall nuclear detector system response. A GaAs diode is a high-speed current device which emits light with an intensity linearly related to the electrical input over a wide range and which has a frequency response well beyond that of normal silicon detectors. The...
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