)
FIGURE 4.5
A parallel plate electric ?¬?eld-sensitive label. (From Cole, P.H.,
Jamali, B., and Ranasinghe, D., Coupling relations in RFID
systems, 2003 Auto-ID Center White Paper Series, 2003 by
Auto-ID Center.)
68 RFID Handbook: Applications, Technology, Security, and Privacy
4.3 Tag Antenna Design Considerations
Use of RFID in the identi?¬?cation of objects in various supply chains around the world has
created research avenues into consumer product packaging (CPP) to ?¬?nd novel ways of
integrating RFID labels into packaging and developing labels to suit packaging and the
contents of packaged goods. The earlier sections have described the results of previous
label antenna design developments to illustrate the multifaceted world of tag antenna
design.
In addition to the antenna designs presented previously, there is an accumulating index
of publications on RFID label antennas, for both active and passive tags, such as the slot
antenna designs (Chen and Hsu, 2004), inverted F-antenna designs (Hirvonen et al., 2004),
and the folded dipole antenna design (Xianming and Ning, 2004), to consider a few. Most
of these publications only cover aspects of antenna analysis and practical aspects such as
the suitability of the antenna for a speci?¬?c application (Leong et al., 2005). However, what
is not covered is a methodology for designing a tag antenna and a clear view of tag antenna
design criteria.
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