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This paper presents the evaluation of reading RF tags by free access transmission line using microstrip bandpass filter structure for smart shelf known as RFID application. We simulate the coupled power with circularly polarized patch antenna as RF tag and evaluate the reading performance RF tags using the proposed line. As a result, the average couple power is about −23 dB and its fluctuation range...
In ultra low power RF energy harvesting circuits, it is required that incident power is handled efficiently. One such requirement is to avoid re-radiation of higher order harmonics generated in the single or two diode rectenna. In this paper, a ground slot is proposed to eliminate the higher order harmonic resonance, while ensuring a fixed fundamental resonance at 2.1 GHz, and circular polarization...
This paper presents a compact TRP measurement system by the field simulator developed for the cellular phone test facility. We present the concept of proposed system and demonstrate and discuss random propagation characteristics inside the simulator.
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