Experimental study of double-balanced-multiplier integrated circularly polarized microstrip antenna for Tx and Rx operation

In this paper, a double balanced multiplier (DBM) integrated circularly polarized microstrip antenna is investigated experimentally. The DBM that is a kind of microwave circuits is loaded to realize a circular polarization excitation and its sense switching function. Performances of the antenna depend on an input power due to the nonlinear characteristics of the DBM. The antenna performances for Tx and Rx operation are discussed.