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Handbook of Smart Antennas for RFID Systems by Nemai Chandra Karmakar

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CHAPTER 6

RFID PLANAR ANTENNA—SMART DESIGN APPROACH AT UHF BAND

SUSHIM MUKUL ROY

Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria, Australia

NEMAI CHANDRA KARMAKAR

Department of Electrical and Computer Systems Engineering, Monash University, Clayton Victoria, Australia

6.1 INTRODUCTION

Numerous developments are reported globally in conventional RFID technology in the ultra-high-frequency (UHF) band. Following the standardization of ISO 18000-6C [1] by EPC global [2], RFID operations got a global boost. The band allocated to RFID technology in the UHF band is around 800 MHz in Europe and the Asian nations like Brunei, Hong Kong, Malaysia, and Singapore [3] and [2]. However, for countries like the United States, Australia, or Japan, the frequency range is around 900 MHz. To make a tag and reader work in both the United States and Europe, the solution is to make frequency-agile or dual-band systems that work in both the frequencies of 800 MHz and 900 MHz. The other option, being taken up by the government organizations, is to come to a general agreement for uniform frequency allocation.

With the different frequency allocations, developments are being reported for accessory supporting components also like Power Amplifiers working in the range of 800–1000 MHz [4]. New IP backbones are developed to provide intercompatibility between RFID systems or digital radio working at 800 MHz with an analog user [5]. The added feature of this work ...

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