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A broadband Voltage controlled oscillation (VCO) is presented in this paper. The VCO is implemented in 0.13μm CMOS technology with 1.2V supply voltage. The circuit allows the VCO to operate at two resonant frequencies with two LC tanks. Simulation shows the low band operates at 2.46∼4.2GHz while the high band operates at 4.0∼5.4GHz, the proposed VCO output covers frequency band from 2.46GHz to 5.4GHz...
The demanding noise figure (NF) and linearity by direct conversion and low intermediate frequency (IF) architectures make the design of active mixer extremely challenging. According to second order intermodulation and flicker noise mechanisms reviewed in this paper, we find some factors affect both the IIP2 and NF of the Gilbert cell simultaneously. AC coupling is adopted to filter out the low frequency...
This paper presents the design of optimum miniatureized conformal smart antenna system using 1×8 switched Butler Matrix and the realization of its planar smart antenna system. The demands of wireless communication were increases, so the higher capacity, wider coverage and low attenuation are main characteristic to provide the better and quality services. Smart antenna systems provide a broad range...
The power supply grids of integrated circuits (ICs) are interconnected through silicon vias (TSVs) to form a 3-D chip integration in vertical direction. The required currents for each functional device to operate in the ICs are supplied through power and ground TSV pairs and power distribution meshes. Accurate estimation of power/ground noises (static and dynamic drops) in a 3-D power distribution...
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