Title :
Low-pass Filter Design using Two Overlapped Periodic EBG Structures with Low Spurious Responses
Author :
Lima, Nuno B. ; Miranda, Henrique C. ; Pereira, José R. ; Salgado, Henrique M.
Author_Institution :
Inst. de Engenharia de Sistemas e Comput. do Porto, Porto
Abstract :
This paper presents the design of a low-pass microwave filter based on the EBG (electromagnetic bandgap) concept. The structure is composed of a microstrip line in one of the layers and two different periodic superimposed EBG structures in the ground plane. The first structure defines the characteristics of the filter in the pass-band whereas the second periodic structure is used to reduce the second harmonic spurious response. The filter exhibits a fiat pass-band response and a cut-off rate better than 380 dB/octave.
Keywords :
band-pass filters; harmonics; low-pass filters; microstrip filters; microwave filters; photonic band gap; electromagnetic bandgap; harmonic spurious response; low-pass filter design; low-pass microwave filter; microstrip line; overlapped periodic EBG structures; pass-band filter; Low pass filters; Metamaterials; Periodic structures;
Conference_Titel :
Electromagnetics in Advanced Applications, 2007. ICEAA 2007. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-0767-5
Electronic_ISBN :
978-1-4244-0767-5
DOI :
10.1109/ICEAA.2007.4387435
