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Time-interleaved ADC (TIADC) system's poor performance due to mismatches including offset, gain mismatches, and clock skew in sub-channels has restricted its practice use seriously. In this paper, we developed an estimation algorithm for those mismatches, and a digital-background calibration method based on cubic spline interpolation to decimate skew error is also demonstrated. Simulation results...
This paper presents a balanced small antenna matched with the RF chip CC2500. The antenna is confined in an area of 3mm∗11mm and the whole RFID system is printed on a microSD substrate. The produced microSD card is inserted into a mobile phone as a plug-in. The geometry of the antenna is optimized to obtain a specific radiation pattern, which ensures that the main power can be radiated out through...
Wireless energy transfer by coupled magnetic resonances is a popular technology in which energy can be transferred via coupled magnetic resonances in the non-radiative near-field. In this paper, we use coupled inductance model in circuit theory to analyze the power transfer efficiency of this technology, instead of using coupled mode theory (CMT). The analysis result is verified by some simulations...
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