Retrieving Delta Permittivity Using Highly Independent Dual-Band Microwave Sensor With Alternately Reference Capabilities. - Syah Alam; Indra Surjati; Lydia Sari; Raden Deiny Mardian; Fitri Kurnia Sari; Teguh Firmansyah; Muhammad Iqbal; Nugraha; Dian Widi Astuti; Mudrik Alaydrus; Yuyu Wahyu; Zahriladha Zakaria (IEEE Access, 2026)