Intermec

About: Intermec is a based out in . It is known for research contribution in the topics: Dipole antenna & Antenna measurement. The organization has 60 authors who have published 51 publications receiving 3865 citations.

Dual point vehicle mount for computer terminal

Abstract: A vibration resistant mounting bracket has a base attachable to a support structure by bolts. Isolator bushings are positioned in the mounting holes in the bracket to isolate the bracket from shocks and vibration. A pair of arms project perpendicularly from the base. Each arm has a round opening and an arcuate opening concentric with the round opening. A first fastener pivotably connects a terminal to each arm of the bracket at a pivot axis defined by the round openings. A second fastener has a shaft extending through the arcuate opening and into a second threaded opening in the terminal. The second fastener may be tightened and loosened to secure the terminal in a pivot position relative to the bracket and release the terminal from the pivot position to change to a different pivot position.

Effect of Gen2 protocol parameters on RFID tag performance

Abstract: In this paper, we analyze the effect of Gen2 protocol parameters on RFID tag performance (tag sensitivity and backscatter efficiency). We describe our measurement methodology and perform characterization of several tags with different latest Gen2 ICs available on the market (Monza, UCODE, and Higgs families). To confirm our findings, we repeat measurements using conducted tag setup. We analyze data and draw conclusions on how the protocol parameters affect the tag performance in forward and reverse links.

Helical antenna for handheld UHF RFID reader

Abstract: In this paper, we describe a compact high gain circularly polarized antenna for handheld UHF RFID reader. The antenna is an axial mode helix operating in a backfire mode with ground plane on top and reflector on the bottom. The described antenna has small footprint (85 mm in diameter) and delivers maximum linear gain ≫ 6 dBil, standing wave ratio ≪ 2, and axial ratio ≪ 2 dB in 60 MHz band centered around 895 MHz (approximate bandwidth 7%). The antenna can be easily tuned to cover any desired portion of the global UHF RFID band (860–960 MHz). The antenna is an attractive solution for handheld readers to maximize tag read range while providing circular polarization. We also review existing antenna solutions for handheld readers and discuss link budget and forward and reverse link tradeoffs.

Compact Yagi antenna for handheld UHF RFID reader

Abstract: This paper describes a compact linearly polarized high gain antenna for a handheld UHF RFID reader. The antenna is a Yagi type structure, with three elements (driver, director, and reflector) which fit into compact footprint (100 mm × 100 mm). The antenna has maximum gain of 6 dBi and VSWR better than 1.3 in approximately 50 MHz band around either European or US RFID bands (865–870 MHz or 902–928 MHz). We describe the antenna structure and present the comparison of simulation results with experimental data.

Harmonic scattering from passive UHF RFID tags

Abstract: This paper discusses harmonic scattering from passive UHF RFID tags. We describe the problem and the basic theory; explain our measurement setup, and present experimental results for three different commercial Gen2 tags.