Triple-mode wideband bandpass filter using simple perturbation in metallic-loaded rectangular waveguide cavity. Issue 5 (4th July 2018)

• Record Type: Journal Article
• Authors: Hameed, Musab; Xiao, Gaobiao; Qiu, Lina
• Is Part Of: Electromagnetics. Volume 38:Issue 5(2018)
• Page Start: 303
• Page End: 316
• Publication Date: 2018-07-04
• Subjects: microwave filter -- triple-mode filter -- bandpass filter; Electromagnetism -- Periodicals; 537
• DOI: 10.1080/02726343.2018.1473167
• Languages: English
• ISSNs: 0272-6343

Abstract

ABSTRACT: This paper presents a simple perturbation technique using an off-centered metal cylinder in rectangular waveguide cavity to realize a triple-mode wideband bandpass filter. A TM mode along with two degenerate hybrid modes namely HM+ and HM-, are excited by an off-centered perturbation in a single rectangular metal cavity. The filter operates at central frequency of 2.4 GHz with fractional bandwidth of 58%. Finally, the filter is fabricated using brass. Measured results are in good agreement with the simulated results.