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Suspending micro strip line method is applied to predict the stop band characteristics of the rectangular spiral EBG structure. Effects of height and width of the suspending micro strip line on stop band data, including center frequency and bandwidth, are considered. To investigate this method in detail, a 5 × 5 mushroom-like EBG structure is fabricated. The measured stop band results are compared...
Based on Brokaw bandgap cell, an improved implementation of BGR which consists of a temperature compensated circuit and a simple feedback loop circuit is presented. The circuit exploits a high-order compensation method to realize a low TC and uses an op-amp-avoided feedback loop circuit to save the power dissipation. Implemented in 0.5μm BCD process, the proposed circuit achieves a TC of 1.9 ppm/°C...
In this paper, we investigate effects of several design parameters, including turn number and unit cell size, on the stopband performance of rectangular spiral EBG structure by HFSS. The results of conventional EBG structure and rectangular spiral EBG structure are compared. In addition, the spiral EBG structure is applied into microstrip antenna. It is demonstrated that gain and FBR are improved.
Based on the principle of piecewise compensation, a new high-order curvature compensated method of bandgap reference is presented in this paper. This method focuses on forming multiple local extrema of the curve of reference voltage instead of single valley or peak in the entire operating temperature range, which improves the temperature independence significantly. It has a temperature coefficient...
In this paper, we present the design of a novel waveguide structure capable of multifrequency transmission bands with strongly enhanced electric field states. The concept of the structure is based on aperiodic and quasi-periodic fractal ordering of scattering subunits combined within a traditional channel-waveguide scheme. The resulting 3-D fractal waveguides are characterized by complex transmission...
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