Balanced bandpass filter based on magnetically coupled coplanar waveguide folded-stepped impedance resonators

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Author(s): A. Fernández-Prieto ^{1, 2} ; J. Bhatker ³ ; A. Lujambio ⁴ ; J. Martel ⁵ ; F. Medina ¹ ; R.R. Boix ^{1, 2}
- Affiliations: 1: Faculty of Physics, Department of Electronics and Electromagnetism, University of Seville, 41012 Seville, Spain ;
  2: Electronics and Electromagnetism, University of Sevilla, Av. Reina Mercedes s/n, Seville 41012, Spain ;
  3: Undergraduate student, ENSEEIHT, electronics and signal processing, microwaves, rue Charles Camichel, 31000 Toulouse, France ;
  4: Power Electronics Systems Department, Skylife Engineering, Parque Tecnológico Aeroespacial de Andalucía (Aerópolis), c/ Early Ovington 24, Sevilla 41309, Spain ;
  5: Department of Applied Physics II, ETSA, 41012 Seville, Spain
Source: Volume 52, Issue 14, 07 July 2016, p. 1229 – 1231
DOI: 10.1049/el.2016.1128 , Print ISSN 0013-5194, Online ISSN 1350-911X

A novel balanced differential bandpass filter implemented in coplanar waveguide (CPW) technology is presented. The filter is based on the use of two magnetically coupled CPW folded-stepped impedance resonators. The use of magnetic coupling, instead of the more common electric coupling, provides inherent common-mode rejection. Measured and simulated results demonstrate the benefits of the proposed balanced filter.

Balanced bandpass filter based on magnetically coupled coplanar waveguide folded-stepped impedance resonators

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