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Ultra-wide stopband lowpass filters using ring resonators
- Source :
- International Journal of Microwave and Wireless Technologies. 13:880-886
- Publication Year :
- 2021
- Publisher :
- Cambridge University Press (CUP), 2021.
-
Abstract
- A microstrip-based lowpass filter (LPF) containing modified ring structures has been presented. Ring resonators are used to form a sharp transition region. In addition, rectangular- and tapered-shaped suppressing cells are used to create an ultra-wide stopband region. By combining the designed ring resonator and suppressors, an LPF has been designed with −3 dB cut-off frequency at 1.83 GHz. A sharp transition region has been achieved from 1.83 (at −3 dB) to 2.1 GHz (at −60 dB). A stopband region has been concluded from 2 to 21 GHz (with the corresponding attenuation level of at least 20 dB). The measured insertion loss is better than 0.1 dB (equal to a return loss of 18.1 dB) in the passband region. The proposed circuit is fabricated and measured. The measured results have an appropriate adaption with the simulated results.
- Subjects :
- Materials science
business.industry
Low-pass filter
Attenuation
020208 electrical & electronic engineering
020206 networking & telecommunications
02 engineering and technology
Stopband
Microstrip
Resonator
Optics
0202 electrical engineering, electronic engineering, information engineering
Return loss
Insertion loss
Electrical and Electronic Engineering
business
Passband
Subjects
Details
- ISSN :
- 17590795 and 17590787
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- International Journal of Microwave and Wireless Technologies
- Accession number :
- edsair.doi...........308796c382279b2ba6f140fc0699fe98