iCLASS SE Reader Module Hardware Developer’s Guide, SE3200-902, Rev. C.1
February 2014 Page 40 of 52
7.4 4090A11 HF Antenna
Figure 16: 4090A11 HF Antenna
The 4090A11 HF antenna has an impedance of 50Ω and is optimized for operation
with a 50mm ribbon cable. The antenna is tuned for a free air environment.
7.4.1 Mechanical Data
Detailed drawings are available at the iCLASS SE Reader micro-site.
7.4.2 Typical Read Ranges with Standard Transponders
The following read ranges are for indication only. The read range of a transponder
may vary significantly depending on antenna size and quality factor. Table 24:
4090A11 HF Antenna with Standard ID1 Transponders Read Ranges shows tested card
self-resonance frequency to provide an indication for the antenna design difference.
Note that tests with other form factors like key fobs and tags were performed as well.
The table only shows ID1 cards to allow direct comparison.
For these read range tests, the transponder serial number was read. No cryptographic
operations were performed.
Table 24: 4090A11 HF Antenna with Standard ID1 Transponders Read Ranges
Standard /
Modulation Scheme
HID Seos
P/N500x
HID Global ID1 Card
ISO/IEC14443 (Type
A)
14,22 55
14,20 55
14,21 55