Abstract
AbstractThis article presents a bistatic microstrip circular patch antenna with high self‐interference cancellation (SIC) through phase reconfigurable differential feeding network. The proposed microstrip antenna consists of closely spaced transmitter and receiver patches having orthogonal polarization with respect to each other. To achieve high SIC, the phase reconfigurable of feeding network can assist in tracking the phase offsets of self‐interference signal caused by fabrication error or scattering nearby objects. From the experiment, the proposed antenna provided higher than 75 dB (65 dB) SIC bandwidth for 36 MHz (50 MHz) at the center frequency of 2.50 GHz. The proposed antenna is a good candidate for in‐band full duplex communication system because of its simple design.
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