Self-Isolated Multiple-Input-Multiple-Output Antenna for mm-Wave Applications
- Resource Type
- Conference
- Authors
- Sokunbi, Oludayo; Attia, Hussein; Hamza, Abubakar; Shamim, Atif; Kishk, Ahmed A.
- Source
- 2023 International Microwave and Antenna Symposium (IMAS) Microwave and Antenna Symposium (IMAS), 2023 International. :79-82 Feb, 2023
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Microwave antennas
Wireless communication
Surface waves
Millimeter wave technology
Transmitting antennas
Bandwidth
Impedance
mm-wave antenna
MIMO
self-decoupled antenna
- Language
A low-cost innovative MIMO antenna configuration with minimal separation between the radiating elements and high isolation over a wide frequency band is presented. Several precisely designed slots with various forms, locations, and sizes are etched on the radiating patches to improve inter-element isolation throughout the mm-wave band of 30–41 GHz impedance bandwidth. This achieved elements isolation better than 70 dB with an inter-element spacing of 0.2 mm (0.02A at 30 GHz). The suggested self-isolation method is validated by designing a 1x2 MIMO array configuration. The innovative mm-wave antenna has the following characteristics over the desired bandwidth: high impedance bandwidth (30%) and low mutual coupling (70 dB). To the authors' knowledge, the present design is the first to demonstrate such broadband isolation enhancement in the mm-wave frequency range without any sophisticated decoupling structure such as metamaterial or frequency-selective surface.