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Analysis of flexible silver-printed NFC tag antenna on miniaturization and bending effect
Najwa Mohd Faudzi1, Ahmad Rashidy Razali2, Asrulnizam Abdul Manaf3, Nurul Huda Abd Rahman4, Ahmad Azlan Aziz5, Amiruddin Ibrahim6, Aiza Mahyuni Mozi7.
Size and flexibility are the two main elements that must be considered in
designing a near-field communication (NFC) tag antenna because they will
determine the performance of the whole system. The previously designed
NFC tag antenna, which is made of a rigid substrate such as FR-4, limited
the application of the tag to only on a flat surface. The size of the tag antenna
also needs to be optimised based on the application requirements since
different sizes of the antenna will contribute to different electrical properties,
including inductance and resistance. Therefore, this paper presents an
analysis of a flexible printed tag antenna with different miniaturisation sizes
and bending effects for NFC systems. The operating frequency of the
proposed NFC tag antenna is 13.56 MHz, which is the same frequency as the
NFC reader, allowing them to be coupled and to communicate with each
other. Three sizes of silver printed tag antenna are presented, and the
performance of the tag during bending is analyzed. Other tag antenna
parameters and characteristics, including reflection coefficient, inductance,
resistance, read range and output voltage, are also observed through
simulation and accordingly measured. The results show that the Design 1
antenna has demonstrated the highest measured tag reading range of 3 cm,
while the Design 2 antenna has shown good flexibility, withstanding bending
at various angles and exhibiting a minimum reading range of 0.5 cm.
Overall, the correlation between antenna size, flexibility and antenna
performance has been determined and systematically validated.
Affiliation:
- Universiti Teknologi MARA Cawangan Pulau Pinang, Kampus Permatang Pauh, Malaysia
- Universiti Teknologi MARA Cawangan Pulau Pinang, Kampus Permatang Pauh, Malaysia
- Universiti Sains Malaysia, Malaysia
- Universiti Teknologi MARA, Shah Alam, Malaysia
- Universiti Teknologi Brunei, Brunei
- Universiti Teknologi MARA Cawangan Pulau Pinang, Kampus Permatang Pauh, Malaysia
- Universiti Teknologi MARA Cawangan Pulau Pinang, Kampus Permatang Pauh, Malaysia
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