Golestanifar Alireza, Karimi Gholamreza, Lalbakhsh Ali
Electrical Engineering Department, Faculty of Electrical and Computer Engineering , Razi University, Kermanshah, Iran, 6714967346.
School of Engineering, Macquarie University, Sydney, NSW, Australia.
Sci Rep. 2022 Sep 29;12(1):16330. doi: 10.1038/s41598-022-20593-x.
A wide-band band-pass filter (BPF) using coupled lines, rectangular stubs and Stepped-Impedance Resonators (SIRs) is presented in this paper. The proposed BPF operates over a large pass-band from 3.15 to 6.05 GHz covering 5G New Radio (NR) frequency Bands n77, n79 and 5G Wi-Fi, which includes the G band of US (3.3 to 4.2 GHz), 5G band of Japan (4.4 to 5 GHz) and 5G Wi-Fi (5.15 to 5.85 GHz). The presented filter has a maximum pass-band Insertion-Loss (IL) of 2 dB, a sharp roll-off rate and suppresses all the unwanted harmonics from 4.2 GHz up to 12 GHz with a 15 dB attenuation level. The performance of each section can be analyzed based on lumped-element circuit models. The electrical size of the BPF is 0.258 λ × 0.255 λ, where λ is the guided wavelength at the central frequency. The design accuracy is verified through implementing and testing the final BPF. The pass-band band-width can be controlled by adding the varactor diodes. A good relationship between the band-width and the varactor diodes are extracted by the curve fitting technique.
本文提出了一种采用耦合线、矩形短截线和阶梯阻抗谐振器（SIR）的宽带带通滤波器（BPF）。所提出的BPF在3.15至6.05 GHz的大带宽通带上工作，覆盖5G新无线电（NR）频段n77、n79和5G Wi-Fi，其中包括美国的G频段（3.3至4.2 GHz）、日本的5G频段（4.4至5 GHz）和5G Wi-Fi（5.15至5.85 GHz）。所展示的滤波器具有2 dB的最大通带插入损耗（IL）、陡峭的滚降率，并能抑制从4.2 GHz到12 GHz的所有不需要的谐波，衰减水平为15 dB。每个部分的性能可基于集总元件电路模型进行分析。BPF的电气尺寸为0.258 λ×0.255 λ，其中λ是中心频率处的导波波长。通过对最终BPF进行实现和测试来验证设计精度。通带带宽可通过添加变容二极管来控制。通过曲线拟合技术提取了带宽与变容二极管之间的良好关系。
