Yapay Zeka Hızlı Bakış & Çıkarımlar
AI InsightFor demonstration, a prototype filter is fabricated and measured, and good agreements are obtained between the measured results and electromagnetic (EM) simulated ones
📌 3 Maddede Bu Makale
Abstract
In this article, a compact triple-band microstrip bandpass filter (BPF) with tunable centre frequencies and bandwidths as well as multiple transmission zeros (TZs) is presented. The proposed filter is designed based on a novel multi-mode resonator (MMR), and the even-/odd-mode analysis method is employed to investigate its resonant characteristics. By changing the lengths of two loaded coupled open stubs and coupling space between them, two resonant modes can be tuned and the bandwidth can be controlled. Also, two additional TZs are generated due to the dual-finger feed structure. Moreover, these two TZs can be controlled by the lengths of two fingers, and high passband selectivity and band-to-band isolation level are achieved with ten TZs. The three centre frequencies of the proposed triple-band BPF are located at 1.9, 3.55, and 7.33 GHz, respectively. In addition, the overall circuit size of the fabricated filter is much smaller in comparison with previous works. For demonstration, a prototype filter is fabricated and measured, and good agreements are obtained between the measured results and electromagnetic (EM) simulated ones