Abstract: This paper presents the design of a rectangular slotted antipodal Vivaldi antenna (AVA) incorporating ridged substrate integrated waveguide (RSIW) structures for ultra-wideband (UWB) ...
A full-stack AI-powered invoice/receipt automation system tailored to the South African SME market. Process invoices, extract key fields using OCR + AI, validate against SARS VAT requirements, and ...
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