volume | PIER Journals

Abstract

This paper presents a miniaturized broadband port-reuse microstrip circuit to address the challenges of bulky volume, excessive insertion loss, and parameter deviation superposition caused by discrete port design and discrete circuit design in the interconnection between active phased array antennas and T/R components. Based on an integrated design methodology, the circuit achieves bandpass filtering, bidirectional power coupling output, DC power supply port functionality, and RF/DC isolation through a single-port interconnection. Experimental results demonstrate that the implemented circuit in Ku-band exhibits 13.5-15.18 GHz bandpass filtering characteristics, bidirectional signal power monitoring capability, 0-12 V/2.5 A DC power supply functionality, and effective RF/DC signal isolation. The measured results align well with theoretical predictions. This architecture demonstrates exceptional adaptability and seamless integration capability, showing significant potential for large-scale deployment in various transceiver architectures such as satellite communication systems.

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Dr. Run-Lin Zhang

Dr. Tao Fang

Prof. Tao Tang