Multilayered Balanced Dual-Band Bandpass Filter Based on Magnetically Coupled Open-Loop Resonators with Intrinsic Common-Mode Rejection

Applied Sciences

Armando Fernández-Prieto¹  JoseL. Medran del Rio¹  Francisco Medina¹  AlejandroJavier Martinez-Ros²  Jesús Martel³  Aintzane Lujambio⁴ 

[1] Departamento de Electrónica y Electromagnetismo, Facultad de Física, Universidad de Sevilla, 41012 Sevilla, Spain;Departamento de Física Aplicada I, Universidad de Sevilla ETSII, 41012 Sevilla, Spain;Departamento de Física Aplicada II, Universidad de Sevilla ETSA, 41012 Sevilla, Spain;Parts Laboratory Department, Alter Technology TÜV Nord S.A.U., 41092 Seville, Spain;

关键词: dual-band differential filter;    common-mode suppression;    magnetic coupling;    multilayer structure;   

DOI  :  10.3390/app10093113

来源: DOAJ

【 摘 要 】

A new dual-band balanced bandpass filter based on magnetically coupled open-loop resonators in multilayer technology is proposed in this paper. The lower differential passband, centered at the Global Positioning System (GPS) L1 frequency, 1.575 GHz, was created by means of two coupled resonators etched in the middle layer of the structure, while the upper differential passband, centered at a Wi-Fi frequency of 2.4 GHz, was generated by coupling two resonators on the top layer. Magnetic coupling was used to design both passbands, leading to an intrinsic common-mode rejection of 39 dB within the lower passband and 33 dB within the upper passband. Simulation and measurement results are provided to verify the usefulness of the proposed dual-band differential bandpass filter.

【 授权许可】

Unknown