Dual Band CSRR Loaded Crescent Slotted Circular Patch MIMO Antenna
| Authors | B. Sivashanmugavalli, B. Vijayalakshmi |
| Affiliations |
B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalore, Chennai, India |
| Е-mail | |
| Issue | Volume 16, Year 2024, Number 5 |
| Dates | Received 15 June 2024; revised manuscript received 17 October 2024; published online 30 October 2024 |
| Citation | B. Sivashanmugavalli, B. Vijayalakshmi, J. Nano- Electron. Phys. 16 No 5, 05012 (2024) |
| DOI | https://doi.org/10.21272/jnep.16(5).05012 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Antenna (6) , CSRR. MIMO, Diversity gain, Logo antenna, Miniaturization. |
| Annotation |
The analysis of the 4 element MIMO configuration of a dual band CSRR loaded crescent slotted circular patch antenna is presented in this paper. The primary radiator of the proposed antenna is the logo of the author’s institute. The design of primary radiator follows a fixed geometry, which includes the crescent slot, star shaped slots and a spline split. The undefined structures in the logo are the main challenge to obtain the desired resonance frequency. The CSRR etched at the ground plane of the antenna helps to attain the desired resonance at 2.15 GHz and 2.4 GHz. The 4 element MIMO configuration is proposed to serve the high data rate applications. When four similar antenna elements are placed on the single substrate, the CSRR provides high isolation too. To design the compact MIMO, the distance between the antenna elements is kept as minimum. Hence the distance between the antenna elements is maintained as λ/4 to mitigate the effects of multipath propagation as well as to minimize the interferences between the antenna elements. The complete antenna is designed on the FR4 substrate (εr = 4.4). The simulations are carried out using Ansys HFSS 2023 R2. The prototype of the designed antenna is developed and tested. The measured return loss is well below the 10 dB and the gain is 6.28 dB at 2.4 GHz resonance. The MIMO analysis of the antenna shows high isolation between the elements ( – 13 dB), low envelope correlation co-efficient (0.00008) and high directive gain ( 9.995). The obtained results ensured that the proposed antenna is well suited for Wi-Fi, bluetooth and Zigbee applications. |
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