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

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 etc...

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Bibliographic Details
Published inApplied sciences Vol. 10; no. 9; p. 3113
Main Authors Medran del Rio, Jose L., Lujambio, Aintzane, Fernández-Prieto, Armando, Martinez-Ros, Alejandro Javier, Martel, Jesús, Medina, Francisco
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.05.2020
Subjects
Bandpass filters
Bandwidths
common-mode suppression
Design and construction
Design specifications
dual-band differential filter
Engineering research
Global positioning systems
GPS
Innovations
magnetic coupling
multilayer structure
Multilayers
Rejection
Resonators
Signal processing
Spain
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Summary: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.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10093113