5G frekans bantları (6 GHz altı) için çift modlu çift bantlı kompakt mikroşerit bant geçiren filtre tasarımı

Öz

Bu çalışmada, 5G alt frekans bandında (6 GHz’e kadar) çalışan çift modlu çift bantlı filtre için bir tasarım prosedürü sunulmaktadır. Önerilen filtre indüktif yüklü basamak tipi empedans rezonatör kullanılarak gerçekleştirilmektedir. İndüktif yükleme etkisi, boyutun küçültülmesini sağlamak ve her iki geçme bandındaki geri dönüş kayıplarını en aza indirmek için uygun şekilde düzenlenmiştir. Çift bant karakteristiğini elde etmek için rezonatör üzerine metal geçiş yolları eklenmiştir. 5G alt frekans bandı uygulamalarında çalışacak şekilde üretilen, 3.2 GHz ve 4.5 GHz merkez frekanslarına sahip birbirinden bağımsız olarak kontrol edilebilen iki geçme bandına sahip filtre tam dalga elektromanyetik simülatör aracılığıyla tasarlanmıştır. Baskı devre tekniği ile üretilen devre ölçülerek test edilmiştir. Önerilen filtrede kısmi bant genişlikleri ilk geçme bandı için %26.7 ve ikinci geçme bandı için %18.1, araya girme kaybı seviyeleri ise sırasıyla 0.84 dB ve 0.86 dB olarak ölçülmüştür. Çift bantlı filtre için simüle edilmiş ve test edilmiş sonuçlar iyi bir uyum göstermiştir.

Anahtar Kelimeler

• Çift bantlı filtre
• basamak tipi empedans rezonatör
• indüktif yükleme etkisi
• 5G frekans bandı (6 GHz altı).

Dual mode dual band compact microstrip bandpass filter design for 5G frequency bands (sub 6 GHz)

Abstract

In this paper, a design methodology is presented for a dual-mode dual-band filter operating in the 5G sub-frequency band (up to 6 GHz). The proposed filter is constructed using an inductively loaded stepped impedance resonator. The inductive loading effect is appropriately arranged to ensure size reduction and minimize return losses in both passbands. Metal vias have been added to the resonator to achieve the dual-band characteristic. The filter, which has two independently controllable passbands with center frequencies of 3.2 GHz and 4.5 GHz, has been designed by a full-wave electromagnetic simulator for use in 5G sub-frequency band applications. The circuit fabricated using the printed circuit has been measured and tested. The fractional bandwidth is measured at %26.7 for the first passband and %18.1 for the second passband and the insertion loss level is 0.84 dB and 0.86 dB, respectively. The simulated and tested results for the dual-band filter have demonstrated a good agreement.

Keywords

• Dual-band filter
• stepped impedance resonator
• inductive loading effect
• 5G frequency band (sub 6GHz).

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