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Compressive sensing (CS) is a promising technology for realizing energy-efficient wireless sensors for long-term health monitoring. However, conventional model-driven CS frameworks suffer from limited compression ratio and reconstruction quality when dealing with physiological signals due to inaccurate models and the overlook of individual variability. In this paper, we propose a data-driven CS framework...
Balanced power dividers have been used recently in modern communication systems due to their ability of differential-mode power division, common-mode suppression and their convenient connection with other differential circuits or antennas. The conventional single-ended power divider needs additional three baluns to configure the balanced power divider, which results in large circuit size. The reported...
This paper presents a balanced-to-unbalanced (balun) with bandpass responses. Two ±K-inverters are utilized to replace the quarter-wavelength transmission lines or three quarter-wavelength lines in the conventional balun. The ±Kinverters consist of two half wavelength resonators, which can function as two filtering network. To connect the ±K-inverters in parallel, a filtering balun is realized. Theoretical...
A novel differential-fed patch antenna (DFPA) is proposed in this letter. Based on a capacitance coupling feed, an impedance bandwidth (SWR<2) of 102% has been obtained. The cross-polarization is less than −15dB across the operating bandwidth because of the differential-fed.
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