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This paper presents a wide-tuning range Voltage-Controlled Oscillator (VCO) for software-defined radio (SDR) applications using a resonator with three potential oscillation modes. The implemented prototype in 0.18μm CMOS technology achieves a continuous tuning range of 86.7% from 5.12GHz to 12.95GHz while drawing 5 to 10mA current from 1-V supply. The measured phase noise at 1MHz offset from carrier...
This paper presents a novel miniaturization technique for half-mode substrate integrated waveguide (HMSIW) bandpass filters using cross-shaped fractal structures. The overall filter area is reduced by 28% and 37% compared to conventional HMSIW bandpass filters when the first and second iterations of the cross-shaped fractals are used, respectively. In addition, the miniaturized filters exhibit lower...
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