## Abstract A low cost miniaturized CP antenna is proposed for UHF RFID (Radio Frequency Identification) reader applications. The antenna is composed of a vertical ground and a square‐ring patch with truncated corners. A novel capacitively coupled feed structure is proposed for good impedance match
Low-cost surface-reduction technique for RFID reader antennas
✍ Scribed by Matthieu Egels; Thibaut Deleruyelle; Philippe Pannier; Emmanuel Bergeret
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 373 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
We analyze the polarization properties of polarization maintaining fiber and study the basic measurement principles of beat length and polarization extinction ratio. Adopting the high accurate tunable laser source and using the wavelength-sweeping modulation method, the beat length and polarization extinction ratio of PANDA fiber is measured. The experimental results indicate, at the working wavelength of 1550 nm, the largest cross-talk of the sample fiber is À32.8 dB, the beat length is 3.56 mm and the corresponding model birefringence is 4.37 Â 10 À4 , and there is good agreement between the calculated and experimental results.
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