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In this paper, State of Polarization Self-Controller (SOP-SC) employing an ultra low-cost and low-consumption hardware - based on the ALTERA FLEX EPF10K10LC84 FPGA [8], two conditioning block e three 8-bits conversion blocks (one A/D e two D/A) are implemented at component level. As a dedicated FPGA feedback algorithm is activated to tolerate output (+/−5%) variation instead a maximum value, polarization...
This work describes the development of an oscillator prototype at 10GHz that consists of a feedback loop amplifier using a Sapphire loaded cavity and a tunable cylindrical cavity filter. Measurement procedures involving a phase detector circuit technique are described. The phase noise performance obtained at room temperature is −127,32 dBc/Hz at 3KHz and the electrical quality factor (Q) is around...
Based on the concept of Substrate Integrated Wave Guides (SIWG), a filter centered in 10GHz with 1-GHz bandwidth is modeled, simulated and fabricated using a commercial FR-4 lossy dielectric substrate. A low-cost printed circuit board manufacturing technique is employed. A set of experimental results obtained is evaluated, showing excellent agreement with simulation predictions and far than satisfactory...
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