IEEE Microwave and Wireless Components Letters
- Volumen: 25
- Número: 3
- Fecha: 01 March 2015
- Páginas: 160-162
- ISSN: 15311309
- Source Type: Journal
- DOI: 10.1109/LMWC.2015.2390537
- Document Type: Article
- Publisher: Institute of Electrical and Electronics Engineers Inc.
© 2015 IEEE.High-performance bandpass filters (BPFs) based on substrate integrated waveguide (SIW) and half mode SIW (HMSIW) with Koch fractal electromagnetic bandgap (KFEBG) patterns etched on the waveguide surface are proposed. These BPFs are designed using a new methodology. The BPF responses are improved by applying a chirped and tapered technique to the KFEBG patterns which exhibit a radius-to-period ratio r/a ¿ 0.5. Simulation results and experimental verification are presented. Good values for insertion losses and stopband rejection are achieved.