Alibakhshikenari, Mohammad, Virdee, Bal Singh, See, Chan, Abd-Alhameed, Raed, Falcone, Francisco and Limiti, Ernesto (2018) 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 (conference paper : PRIME 2018). In: PRIME 2018, 2-5 July, 2018, Prague, Czech Republic.
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 (0.026
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