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2.8
Separation Between Transponders
2.9
Antenna Parameters
Separation Between Transponders
Separation refers to how close together transponders can be and still be individually read.
High selectivity means transponders can be close together while still achieving successful readings. Low
selectivity means that more distance is needed between transponders in order for them to be successfully
read.
The smaller the antenna, the smaller the major lobe.
The smaller the antenna, the greater the selectivity. The following list shows the TIRIS antennas in order
of increasing selectivity:
Least
G03C large gate
G02C medium gate
G01C small gate
Greatest
S01C/S02C stick antenna
Each antenna has an induction of 27
µ
H
±
1
µ
H, with a Q-factor larger than 100. These values are valid at
room temperature and a 134.2 kHz measuring frequency.
16
How the System Works
SCBU025 – November 1996
Summary of Contents for TIRIS SCBU025
Page 1: ...Antenna Reference Guide November 1996 SCBU025...
Page 2: ...Antenna Reference Guide Literature Number SCBU025 November 1996...
Page 6: ...www ti com 6 SCBU025 November 1996 Submit Documentation Feedback...
Page 20: ...www ti com Noise Characteristics 20 SCBU025 November 1996 Submit Documentation Feedback...
Page 30: ...www ti com Mechanical Characteristics 30 SCBU025 November 1996 Submit Documentation Feedback...
Page 34: ...www ti com Theory of Coupled Inductors 34 SCBU025 November 1996 Submit Documentation Feedback...