Compact Dual-Polarized/Duplex Filtering Antenna with High Isolation

This paper introduces novel dual-polarized/duplex filtering antennas with a feeding network. The network consists of an all-resonator structure, which shares common dualmode resonator. structure facilitates the isolation two well-isolated channels through exploitation even and odd modes dual-mode By applying balanced excitation to mode unbalanced mode, can be separated, creating hybrid-like structure. Despite resonator, exhibit high isolation, overall size circuit is much smaller than conventional cascaded-resonator designs. To demonstrate effectiveness proposed network, we have designed, fabricated, measured dual-polarized duplex antenna. simulated results agree well, showing isolations greater 34 dB 38 for cases, respectively. Our are compared state-of-the-art developments, demonstrating advantages compact size, flexible decoupling frequency ratio, isolation.