Four Element Planar MIMO Antenna Design for Long-Term Evolution Operation

ABSTRACT

Four element (2 × 2) planar multi-input multi-output (MIMO) antenna design is proposed for long-term evolution applications for operating bands 1 and 4. The design combines 180° phase reversed and phase rotated antenna elements. Presented design integrates the effect of pattern and space diversity techniques for common return-losses and isolations at different (or between) ports. The fabricated antenna utilizes the space of 68 × 98 mm² on low cost FR-4 dielectric substrate. The proposed design with VSWR of <2 exhibits −10 dB impedance bandwidth in the range of 1.66–2.17 GHz. More than 10 dB of isolation among all the radiating elements of MIMO is recorded in simulation and measured cases. The measured peak gain in considered frequency spectrum is better than 2.5 dBi. The diversity performance explores the effect of peak gain, envelope correlation coefficient (ECC), mean effective gain, and directivity on the presented design.

KEYWORDS:

• Long-term evolution (LTE)
• Multi-input multi-output (MIMO)
• Pattern diversity
• Space diversity
• Wireless local area network (WLAN)
• Wireless interoperability of microwave access (WiMAX)

Additional information

Notes on contributors

Leeladhar Malviya

Leeladhar Malviya (Member IETE-M227378) received his BE degree in electronics and telecommunication, from Government Engineering College, Ujjain (MP), India, in 1998, M E degree in electronics and telecommunication, from Shri G. S. Institute of Technology and Science, Indore (MP) India, in 2008, and PhD degree from Indian Institute of Technology Roorkee, India, in 2017, respectively. His area of interest is MIMO antenna design for wireless applications.

E-mail: [email protected]

R. K. Panigrahi

Rajib Kumar Panigrahi received his PhD degree from IIT Guwahati in 2011. He has received his MTech degree in electronics with specialization in microwave engineering from Cochin University of Science and Technology and BE degree in electronics and communication from Bangalore University (Now VTU). Since 2012, he has been with the Department of Electronics and Communication Engineering, Indian Institute of Technology Roorkee, where he is currently an assistant professor. His research interests include radar-based remote sensing, SAR image denoising, and segmentation and classification of SAR images.

E-mail: [email protected]

M. V. Kartikeyan

M. V. Kartikeyan (Fellow IETE-F138559) received the MSc and PhD degrees in physics and electronics engineering from Banaras Hindu University, Varanasi, India, in 1985 and 1992, respectively. He was with Institut für Hochleistungsimpuls-und Mikrowellentechnik, Karlsruhe Institute of Technology, Karlsruhe, Germany, as an Alexander von Humboldt Fellow. He is a full-professor in the Department of Electronics and Communication Engineering, Indian institute of Technology, Roorkee, India, since 2009. His current research interests include millimeter/THz wave engineering (high power devices and allied components), micro-strip antennas for communications, microwave integrated circuits, and RF and microwave design with soft computing techniques.

E-mail: [email protected]