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Science & Technology, Technology, Engineering, Electrical & Electronic, Telecommunications, Engineering, antenna feeds, microstrip antennas, broadband antennas, multifrequency antennas, UHF antennas, electromagnetic wave polarisation, antenna radiation patterns, low-profile patch antenna, parasitic elements, dual-band circularly polarised patch antenna, corner-truncated square patch antenna, driven patch, resonant mode, combined resonances, minimum axial ratio points, dual-band CP operation, high-frequency band, dual-band metasurface, metallic patches, resonant modes, operating bandwidth, frequency 3, 72 GHz, frequency 5, 37 GHz to 6, 05 GHz, bandwidth 40, 0 MHz, POLARIZED MICROSTRIP ANTENNA, SLOT ANTENNA, MODE, DESIGN, 0906 Electrical and Electronic Engineering, 1005 Communications Technologies, Networking & Telecommunications, 4006 Communications engineering, 4008 Electrical engineering, 4009 Electronics, sensors and digital hardware