Jiun-Ian Tan
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Jiun-Ian Tan has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- Eng-Hock Lim
Universiti Tunku Abdul Rahman
2 shared publications - Boon-Kuan Chung
Universiti Tunku Abdul Rahman
1 shared publication - Catur Apriono
Universitas Indonesia
1 shared publication - Eko Tjipto Rahardjo
Universitas Indonesia
1 shared publication Fitri Yuli Zulkifli
Department of Electrical Engineering, Universitas Indonesia, Depok, Indonesia
1 shared publication- Fwee-Leong Bong
Training and Methodology Department, HID Global, Skudai, Malaysia
1 shared publication
Latest Publications
- 19 March 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Antennas and Wireless Propagation Letters
- Vol. 24 (7) , 1969-1973
Design of an Eight-Element Double-Loop MIMO Antenna With Inverted-L Isolators
For the first time, an eight-element MIMO antenna is designed by integrating four double-loop resonators with two pairs of inverted-L isolators. By superimposing the resonance modes of the double-loop antenna, the anti-phase currents of the loops can effectively be canceled out for achieving high isolation (S12), without requiring additional decoupling elements or lumped components. The isolators have successfully generated a null point near the operating frequency for further enhancing the isolation (S32) between the double-loop antennas. As a result, the proposed antenna can achieve good isolation levels of S12 <−21.3 dB and S32 <−29.5 dB across a 10-dB bandwidth in the N78 band (3.3−3.8 GHz) and each port provides over 78% of total efficiency and ECC below 0.01 in experiments.
- 19 March 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Antennas and Wireless Propagation Letters
- Vol. 24 (7) , 1969-1973
Design of an Eight-Element Double-Loop MIMO Antenna With Inverted-L Isolators
For the first time, an eight-element MIMO antenna is designed by integrating four double-loop resonators with two pairs of inverted-L isolators. By superimposing the resonance modes of the double-loop antenna, the anti-phase currents of the loops can effectively be canceled out for achieving high isolation (S12), without requiring additional decoupling elements or lumped components. The isolators have successfully generated a null point near the operating frequency for further enhancing the isolation (S32) between the double-loop antennas. As a result, the proposed antenna can achieve good isolation levels of S12 <−21.3 dB and S32 <−29.5 dB across a 10-dB bandwidth in the N78 band (3.3−3.8 GHz) and each port provides over 78% of total efficiency and ECC below 0.01 in experiments.
- 26 April 2024
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Radio Frequency Identification
- Vol. 8, 448-457
A Low-Profile Top-Loaded Monopole Antenna for On-Metal RFID Tag Design
For the first time, a novel low-profile top-loaded monopole antenna is proposed for on-metal omnidirectional tag design. Here, a square patch is loaded on top of a short monopole antenna to improve its input impedance and radiation efficiency. Subsequently, the tag antenna is shunt-fed (using both the direct-feeding and proximity-coupled-feeding methods) to further enhance its input impedance and omnidirectionality. As a result, the antenna impedance, radiation resistance, and radiation efficiency have all been enhanced significantly, as compared with a typical short monopole antenna. A C-shaped feedline, which is to shunt-feed the tag antenna, is also introducing additional inductance to the antenna impedance for attaining good impedance matching level. Despite having a profile of not more than one hundredth of the operating wavelength, the proposed tag antenna is still able to exhibit a strong and stable omnidirectional radiation pattern when attached on a metal. The proposed tag antenna, which has a size of $0.1069 \lambda \times 0.1069 \lambda \times 0.0098~\lambda $ , can provide a constant read range of ~9.2 m in all azimuthal directions, with a minimal fluctuation of 0.5 m at 0.910 GHz. The tag’s resonance remains stable and independent of the size and shape of the backing conductive platform.
- 26 April 2024
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Radio Frequency Identification
- Vol. 8, 448-457
A Low-Profile Top-Loaded Monopole Antenna for On-Metal RFID Tag Design
For the first time, a novel low-profile top-loaded monopole antenna is proposed for on-metal omnidirectional tag design. Here, a square patch is loaded on top of a short monopole antenna to improve its input impedance and radiation efficiency. Subsequently, the tag antenna is shunt-fed (using both the direct-feeding and proximity-coupled-feeding methods) to further enhance its input impedance and omnidirectionality. As a result, the antenna impedance, radiation resistance, and radiation efficiency have all been enhanced significantly, as compared with a typical short monopole antenna. A C-shaped feedline, which is to shunt-feed the tag antenna, is also introducing additional inductance to the antenna impedance for attaining good impedance matching level. Despite having a profile of not more than one hundredth of the operating wavelength, the proposed tag antenna is still able to exhibit a strong and stable omnidirectional radiation pattern when attached on a metal. The proposed tag antenna, which has a size of $0.1069 \lambda \times 0.1069 \lambda \times 0.0098~\lambda $ , can provide a constant read range of ~9.2 m in all azimuthal directions, with a minimal fluctuation of 0.5 m at 0.910 GHz. The tag’s resonance remains stable and independent of the size and shape of the backing conductive platform.