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Superconductive Quantum Arrays (SQAs) are suggested for implementation of broadband radio frequency (RF) systems capable of providing highly linear magnetic signal to voltage transfer with high dynamic range. An SQA is a homogeneous array of unique superconducting cells with highly linear voltage response to magnetic field. The SQA is characterized by an independent operation of all array cells forming a collective high linearity output signal. Dynamic range of the SQA-based system increases with number of cells as N1/2. Integration of SQA with an input control line or a superconducting transformer to apply input magnetic flux to the cells connected in series or in parallel-series allows designing amplifiers and active electrically small antennas (ESAs). Moreover, 2D SQA with normal metal cell-to-cell connection can be directly used as transformer-free active ESA. To meet matching requirement, parallel connection of the arrays can be used as well. Results of experimental studies and possible applications are presented and discussed.