Abstract: This paper introduces novel derived transformation equations to design single band circular antennas for Millimeter Wave (MMW) applications. The design utilizes the approach adopted for MMW antenna design based on an integrated Dielectric Resonator Antenna (DRA) in a Si-based technology platform for 77 GHz MMW applications. The obtained optimized antenna by DRA is used as a reference and the proposed transformation is applied to calculate the new antenna design parameters that satisfy its given specifications without changing the geometry. Four Antennas are demonstrated by using this transformation. The desired frequencies are: 35, 60, 94 and 120 GHz; all lie in the MMW band to be utilized in several applications.