38 GHz ve 55 GHz mm-dalga Uygulamaları için Tek RF Anahtarlı Radyasyon Deseni Yeniden Yapılandırılabilir Anten

Öz

Bu çalışmada, 38 GHz ve 55 GHz frekanslarında çalışan radyasyon deseni yeniden yapılandırılabilir bir anten tasarlanmış ve 5G, 6G ve radar sistemleri gibi yüksek frekanslı uygulamalar için analiz edilmiştir. Önerilen anten, RF anahtarı (BAR64-02V) kullanarak desen yeniden yapılandırılabilirliğini sağlar ve daha karmaşık besleme ağları veya birden fazla anten bileşeni yerine kompakt ve verimli bir çözüm sunar. Anten, OFF ve ON durumları arasında ana lob yönünü başarıyla değiştirir. 38 GHz'de, özellikle Phi = 90°'de (180°'den 50°'ye) ve Theta = 90°'de (-50°'den -131°'ye) önemli ışın yönü kaymaları gözlemlenmiştir. 55 GHz'de, en belirgin ışın kayması Phi = 0°'de (-120°'den -108°'e) meydana gelmiş olup, antenin güçlü yönlendirme adaptasyonu sağladığını göstermektedir. ON durumunda üç bantlı çalışma, OFF durumunda ise çift bantlı çalışma gözlemlenmiş olup, bu da gelişmiş operasyonel esneklik sağlamaktadır. Önerilen anten, 38 GHz'de %93 ve 55 GHz'de %90,6'ya ulaşan kabul edilebilir radyasyon verimlilikleri sunmaktadır. Simüle edilen VSWR ve S11 karakteristikleri, tasarımın farklı çalışma durumlarında dayanıklı olduğunu doğrulamaktadır. Antenin yeniden yapılandırılabilirliği, mm-dalga haberleşmesi için ışın yönlendirme, girişim azaltma ve sinyal kalitesinin artırılması gibi avantajlar sunar. Önerilen anten tasarımı, yüksek hızlı 5G ve 6G ağları ile kısmi V-bandı uygulamalarında kabul edilebilir performans sergilemiştir. Sonuçlar, tek bir RF anahtarı içeren üçgen monopole antenin desen ve frekans yeniden yapılandırılabilirliğini etkin bir şekilde sağladığını ve 38 GHz ve 55 GHz'de yüksek performans sunduğunu doğrulamaktadır. Bu çalışma, yeniden yapılandırılabilir antenlerin gelecek nesil kablosuz iletişim ve radar sistemlerinde uygulanabilirliğini göstermektedir ve ışın yönlendirme ve adaptif anten tasarımında daha fazla gelişmeye zemin hazırlamaktadır.

Anahtar Kelimeler

• Anten
• mm-dalga
• Çok bantlı
• Işıma örüntüsü yeniden yapılandırılabilir

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

Öz

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.

Anahtar Kelimeler

• Antenna
• mm-wave
• Multi-Band
• Radiation Pattern Reconfigurable

Kaynakça

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