[PDF] Top 20 A Compact Universal Antenna Design for UHF RFID Handheld Reader

... a reader for tracking and identification purposes. Nowadays, RFID in ultra high frequency (UHF) becomes a very popular technology used in several applications, such as access control system and supply ... See full document

... the reader antenna in a passive RFID system should demonstrate a somewhat lower reflection coefficient level than that in a usual communication ...the reader antenna ...linear-polarized ... See full document

... a design procedure for a flexible compact universal UHF RFID tag antenna suitable for worldwide UHF RFID ...Systematic design procedure is introduced through ... See full document

... polarized compact antenna based on the concept of Yagi-Uda ...a compact Yagi-Uda like antenna is proposed to form directional ...proposed antenna has comparable size with the ring ... See full document

... contactless reader as an interface. In this article,a compact folded printed dipole antenna is proposed for UHF RFID ...proposed antenna is adopted as a method of reducing the ... See full document

... A compact three-element Yagi antenna with maximum gain of ...a handheld UHF RFID reader ...array antenna with closely coupled parasitic strip elements and a gain of ...the ... See full document

... integrated compact circular-polarized annular ring slot antenna is proposed in this ...slot antenna to radiate the circular- polarized wave, while size of the antenna remains the ...proposed ... See full document

... security. RFID systems operate at widely differing frequencies, ranging from 125 kHz to ...Various RFID applications can be found in the ultra high frequency (UHF) band ranging from 840 to 960 MHz ... See full document

... coupling antenna realizes circular polarization by coupling the two orthogonal slots through a feeding network with a phase difference of ± 90 ◦ and radiates energy through the radiation patch located on the upper ... See full document

... a compact arc-shaped slotted circularly polarized microstrip antenna has been presented for Ultra High Frequency Radio Frequency Identification handheld reader ...The antenna is ... See full document

... Recently, RFID technology in ultra-high frequency (UHF) band (840– 960 MHz) has been widely used in several applications, including tracking, access control, ...practice, RFID tags are always ... See full document

... designed antenna is developed from a classic quadrifilar spiral structure [24] with 1 / 4 λ spiral ...(LHCP) antenna is discussed, and the phase difference can be obtained in ...proposed antenna, the ... See full document

... proposed antenna for UHF- RFID applications is presented in figure ...The antenna consists of a microstrip line, a substrate and a ground ...whole antenna size is ... See full document

... polarized antenna for Radio Frequency Identification (RFID) readers is ...This antenna consists of an L-shaped metal strip and a DGS with four tuning ... See full document

... suitable size of coupling cross slot [9], and using polarized loaded stubs [10]. The feeding network for the CP operation is also a considered problem [7, 11–13], which includes the feed on the diagonals, unique phase ... See full document

... Figure 4 shows the configuration of the proposed dual CP antenna. The suspended L-shaped feeding line consists of two strip lines described in the former section. The arm along x -axis of the L-shaped strip is for ... See full document

... near-field antenna includes read-range and read-width. With Impinj UHF button parallel to the prototype, the maximum read range can reach 65 mm along the positive Z -axis under the transmission power level ... See full document

... fractal antenna was a natural choice. Fractaling allowed the antenna to be compact and matched with the chip impedance in the RFID frequency range and to provide omnidirectional performance in ... See full document

... A handheld RFID reader and two UHF passive RFID tags framework is used to achieve localization deployed in geometric composition by using the concept of trilateration in 2-dimensions to ... See full document

... reader. In addition to AM and PM noise from transmitter, the self-noise of RX RF front-end is contributed by tran- sconductance and operational amplifier (OP-amp) of TIA. We shall trade-off between noise, ... See full document