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Experimental study of double-balanced-multiplier integrated circularly polarized microstrip antenna with nonlinear characteristics

In this paper, a double balanced multiplier (DBM) integrated circularly polarized microstrip antenna is investigated experimentally. The DBM is one of functional microwave circuits. The DBM is loaded in order to achieve a circularly polarized antenna with wideband and its sense switching function. Performances of the antenna due to the nonlinear characteristics of the DBM depend on the input power. The antenna performances for the input power are experimentally discussed.