New Approach to Suppress Mutual Coupling Between Longitudinal-Slotted Arrays Based on SIW Antenna Loaded with Metal-Fences Working on VHF/UHF Frequency-Bands: Study, Investigation, and Principle

Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan Hwang; Abd-Alhameed, Raed; Falcone, Francisco; Limiti, Ernesto

Abstract

In this work it is demonstrated that substrate integrated waveguide longitudinal slotted array antenna (SIWLSAA) which is loaded with metal fences exhibits highisolation across VHF/UHF bands. A reference SIWLSAA used for comparison purpose comprises of 3×6 slotted arrays constructed on the top and bottom sides of the FR-4 lossy substrate has maximum isolation of -63 dB between its radiation slots. Improvement in isolation is demonstrated using a simple new technique based on inserting a metal fence between each row of slot arrays. The resulting isolation is shown to be is better than -83 dB across 200 MHz to 1.0 GHz with gain greater than 1.5 dBi, and side-lobe level less than - 40 dB. The proposed SIWLSAA is compact and has dimensions of 40×10×5 mm³ (0.026𝛌0×0.006𝛌0×0.002𝛌0) where 𝛌0 is 200 MHz. The proposed structure should find application in multiple-input multiple-output (MIMO) and radar systems.

Citation

Alibakhshikenari, M., Virdee, B. S., See, C. H., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2018, July). New Approach to Suppress Mutual Coupling Between Longitudinal-Slotted Arrays Based on SIW Antenna Loaded with Metal-Fences Working on VHF/UHF Frequency-Bands: Study, Investigation, and Principle. Presented at 14th Conference on PhD research in Microelectronics and Electronics (PRIME 2018), Prague, Czech Republic

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 14th Conference on PhD research in Microelectronics and Electronics (PRIME 2018)
• Start Date: Jul 2, 2018
• End Date: Jul 5, 2018
• Acceptance Date: May 7, 2018
• Publication Date: Jul 9, 2018
• Deposit Date: May 27, 2019
• Pages: 1-4
• ISBN: 9781538653869
• Keywords: Substrate Integrated Waveguide (SIW), slotted array antenna, reduction mutual coupling, metal fences, isolation, multiple output multiple input (MIMO) systems
• Public URL: http://researchrepository.napier.ac.uk/Output/1830620