Radiation Pattern Reconfigurable Antenna with Single RF-Switch for 38 GHz and 55 GHz mm-wave Applications

Authors : Duygu Nazan Gençoğlan
Pages : 313-323
Doi:10.21605/cukurovaumfd.1644169
View : 31 | Download : 23
Publication Date : 2025-07-02
Article Type : Research Paper
Abstract :In this study, a radiation pattern reconfigurable antenna operating at 38 GHz and 55 GHz is designed and analyzed for high-frequency applications in 5G, 6G, and radar systems. The proposed antenna utilizes an RF switch (BAR64-02V) to achieve pattern reconfigurability, offering a compact and efficient solution compared to more complex feed networks or multiple antenna components. The antenna successfully shifts its main lobe direction between OFF and ON states at both 38 GHz and 55 GHz. At 38 GHz, significant beam direction shifts are observed, particularly in Phi = 90° (180° to 50°) and Theta = 90° (-50° to -131°). At 55 GHz, the most prominent beam shift occurred at Phi = 0° (-120° to -108°), indicating strong directional adaptability. The ON-state enables a triple-band operation, while the OFF-state exhibits a dual-band response, providing enhanced operational flexibility. The proposed antenna offers acceptable radiation efficiencies, with values reaching 93% at 38 GHz and 90.6% at 55 GHz. The simulated VSWR and S11 characteristics confirm the robustness of the design in different operational states. The antenna’s reconfigurability makes it ideal for mm-Wave communications, supporting beamforming, interference reduction, and enhanced signal quality. The proposed antenna design has also shown acceptable performance for high-speed 5G and 6G networks, and partial V-band applications. The results confirm that the proposed triangular monopole antenna with a single RF switch effectively achieves pattern and frequency reconfigurability while maintaining high performance at 38 GHz and 55 GHz. This study demonstrates the feasibility of reconfigurable antennas for next-generation wireless communication and radar systems, paving the way for further advancements in beamforming and adaptive antenna design.
Keywords : Anten, mm-dalga, Çok bantlı, Işıma örüntüsü yeniden yapılandırılabilir

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