Wideband Design of a Compact Monopole-Like Circular Patch Antenna Using Modal Analysis

In this letter, we present a systematic approach to design compact dual-mode monopole-like patch antenna using characteristic mode analysis (CMA). The modal of slotted circular structure incorporating new shorting pin loading technique is presented. To achieve with the wideband operation, it demonstrated that first two significant modes patterns are most suitable ones for excitation. Based on currents and electric fields, four groups pins slots introduced individually tune modes, which facilitates optimization. effects these resonant frequencies analyzed in detail. Finally, CPW T-junction power divider applied simultaneously excite suppress undesired modes. Apart from more form factor higher gain than existing work, also features competitive gain-bandwidth per volume ratio.