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This paper presents the theoretical analysis of phase distortion (AM/PM) mechanisms in Gallium Nitride (GaN) Doherty power amplifiers (DPAs) and a novel approach to optimize the tradeoff between linearity and efficiency. In particular, it is demonstrated how it is possible to mitigate the AM/PM by designing a suitable mismatch at the input of the active devices, based on the identification of constant...
An important goal of research on radio propagation model is to guide the wireless network coverage and optimization while reducing the calculation. In this paper, we made two parts research. Firstly, we proposed a Simplified Air-Ground propagation model (SAGP) based on ITU-R P.618 and P.676 method, which can reduce the calculation while obtain a good prediction effect. The experiment results show...
In this paper, a two-stage mixed integer linear programming (MILP) formulation for source-load coordinated dispatch with wind power considering peak-valley regulation and ramping requirements is proposed. First, the peak-load regulation and ramping requirements of the net load curve are analyzed. Second, the first stage optimization model considering incentive-based demand response (IDR) is formulated...
Nview Multidisplay technology is getting popular in many fields. In order to allow a high degree of parallel processing, the processing units would be massively replicated on the chip. Traditional bus based architecture faces scalability issue. In this paper, we introduce the concept of network on chip to Nview Multidisplay application. The 2D Mesh topology is explored based on the requirement of...
Loading margin sensitivity (LMS) has been widely used in applications in the realm of voltage stability assessment and control. Typically, LMS is derived based on system equilibrium equations near bifurcation and therefore requires full detailed system model and significant computation effort. Availability of phasor measurement units (PMUs) due to the recent development of wide-area monitoring system...
Load shaping is one of important and challenging issues in power grid. In this paper, we propose a novel load shaping strategy based on energy storage and dynamic pricing in smart grid. In the proposed strategy, a consumer is encouraged to draw a certain amount of energy (i.e., quota) from the grid. When the actual energy demand is deviated from the quota, the consumer is faced with a higher electricity...
This paper proposes a dual-mode dual-band open-loop bandpass microstrip filters. The open-loop is composed of two half-wave stepped-impedance resonators (SIR) with high-impedance short-circuited ends, which is equivalent to an inductor for providing coupling between the resonating modes and hence bandwidth control. Moreover, with the aid of source-load coupling which is employed in the second circuit,...
Let AD(u) be the deficit at ruin in the delayed renewal risk model, where u is the initial capital of the company. Under the assumption that the equilibrium distribution of the claim size belongs to the subexponential class, this paper obtains an asymptotic formula for the φ-moment of AD(u). This result improves the related works in the recent literature.
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