Octafilar Helical Antenna for Portable UHF-RFID Reader

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چکیده

منابع مشابه

Turcu Octafilar Helical Antenna for Portable UHF - RFID Reader

Octafilar helical antenna (OFHA) is proposed for handheld ultra‐high‐frequency (UHF) radio frequency identification (RFID) reader. The investigated antenna configuration consists of OFHA placed on reader device in the presence of human hand model. The antenna is designed at UHF band centered at 915 MHz. The antenna return loss, axial ratio, gain, co‐polarized and cross...

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Cristina Turcu Octafilar Helical Antenna for Portable UHF - RFID Reader Regular Paper

Octafilar helical antenna (OFHA) is proposed for handheld ultra‐high‐frequency (UHF) radio frequency identification (RFID) reader. The investigated antenna configuration consists of OFHA placed on reader device in the presence of human hand model. The antenna is designed at UHF band centered at 915 MHz. The antenna return loss, axial ratio, gain, co‐polarized and cross...

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UHF RFID Reader Antenna

This chapter addresses the various design issues, requirements, and specifications in designing reader antennas for UHF RFID applications. In a typical UHF system, the RFID reader antennas are geography specific; that is, there are different antennas for different geography, namely North America, Europe, et cetera. The discussion on the design challenges and performance expectations lead to a n...

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Near-Field Loop Antenna for the UHF RFID Reader

⎯A loop antenna for near field readers is proposed. Through periodic interdigital capacitors, the phase of the current on the loop is compensated and kept in phase. Hence, a loop with a perimeter of one wavelength at 900 MHz achieves a uniform near magnetic field distribution inside the loop. A novel method is proposed to evaluate the performance of the coplanar waveguide (CPW) to coplanar stri...

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UHF RFID Reader Antenna using Novel Planar Metamaterial Structure for RFID System

An Ultra High Frequency (UHF) half-loop antenna used in Radio Frequency Identification (RFID) systems is proposed with a planar patterned metamaterial structure of compact size. The size of the planar patterned metamaterial structure is (0.20λ*0.20λ*0.0023λ) mm. This antenna consists of two metamaterial unit cells having negative permittivity and permeability. Simulation results of input return...

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ژورنال

عنوان ژورنال: International Journal of Radio Frequency Identification & Wireless Sensor Networks

سال: 2011

ISSN: 1847-9812

DOI: 10.5772/10689