Title :
Metal-mountable microstrip RFID tag antenna for high impedance microchip
Author :
Koskinen, Tomi ; Rahmat-Samii, Yahya
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles (UCLA), Los Angeles, CA
Abstract :
This paper presents a metal-mountable RFID (radio frequency identification) tag antenna, which operates at the 902-928 MHz UHF band. The antenna has a simple, low-profile (1.8 mm thick) structure. It consists of two microstrip patches, which are positioned near each other by a narrow gap and driven by a high impedance microchip. We show simulation and measurement results including impedance, read range, and radiation pattern measurements. Impedance measurements are carried out by using a differential s-parameter method. Acceptable read range is approx. 10 m in free space and 4 m on metal.
Keywords :
S-parameters; UHF antennas; antenna radiation patterns; microstrip antennas; radiofrequency identification; UHF band; differential s-parameter method; frequency 902 MHz to 928 MHz; high impedance microchip; metal-mountable microstrip RFID tag antenna; microstrip patches; radiation pattern measurements; radio frequency identification; Antenna measurements; Impedance measurement; Microstrip antennas; Power transmission; RFID tags; Radiofrequency identification; Reflection; Transmitting antennas; UHF antennas; UHF measurements;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
