DESIGN OF DUAL-BAND BANDPASS FILTER WITH WIDE UPPER STOPBAND USING SIR AND GSIR STRUCTURES | Zendy

Mostafa Rajabi Mashhadi | Zendy; Nader Komjani | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

DESIGN OF DUAL-BAND BANDPASS FILTER WITH WIDE UPPER STOPBAND USING SIR AND GSIR STRUCTURES

Author(s) -

Mostafa Rajabi Mashhadi,

Nader Komjani

Publication year - 2012

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

ISSN - 1937-8718

DOI - 10.2528/pierc12073108

Subject(s) - band pass filter , stopband , resonator , spurious relationship , electrical impedance , coupling (piping) , passband , physics , filter (signal processing) , multi band device , acoustics , topology (electrical circuits) , electronic engineering , engineering , computer science , electrical engineering , optics , mechanical engineering , machine learning , antenna (radio)

In this paper, a new dual-band bandpass (BPF) fllter with multi-spurious suppression is proposed, which is composed of step- impedance resonators (SIR) and grounded-step-impedance resonators (GSIR). It is shown that the resonant frequencies of GSIR can be obtained similar to SIR. Then, by determining the dimensions of SIR to have a specifled resonant frequencies ratio, the dimensions of GSIR can be calculated. It is also shown that the coupling lengths between SIR and GSIR can create several transmissions zeros and can be used to suppress the unwanted higher order resonant frequencies. A third-order fllter is designed and fabricated to operate at two WLAN frequencies of 2.45GHz and 5.8GHz. The measured results show a rejection level of 24dB up to more than 17GHz (7f1). Simulation and measurement results are in good agreement with each other.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research