On the Design of Broadband Rectangular Waveguide Pressure Windows

Ali, Mohamed Mamdouh M.; Elsaadany, Mahmoud; Shams, Shoukry I.; Sebak, Abdel-Razik; Gagnon, Ghyslain

doi:10.1109/tmtt.2020.3007067

Cited by 4 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A larger capacitance and inductance are produced by a wider line, which influences its resonant behavior. The working principle of the proposed notch filter can be described using an equivalent circuit that represents its essential electromagnetic properties [29]. The equivalent circuit model based on the lumped elements of the proposed notch filter is shown in Figure 6…”

Section: Complementary Resonator-loaded Waveguide Filtermentioning

confidence: 99%

Resonator-Loaded Waveguide Notch Filters with Broad Tuning Range and Additive-Manufacturing-Based Operating Frequency Adjustment Procedure

Haq,

Koziel,

Pietrenko-Dabrowska

2023

Electronics

View full text Add to dashboard Cite

This article presents a new class of ring-resonator-loaded waveguide notch filters with a broad tuning range, low cost, and improved performance. The proposed approach employs a complementary asymmetric split-ring resonator coupled to a microstrip transmission line and excited in a rectangular waveguide. An equivalent circuit model is proposed to explain the working principle of the proposed notch filter. The adjustment of the operating frequency is based on the additive manufacturing of a metallic copper patch allocated on the microstrip transmission line, which enables extensive tuning capabilities and consistent performance with minimum variations across the tuning window. For demonstration purposes, a filter employing a WR-28 waveguide and photolithography-manufactured resonator is prototyped and experimentally validated. The measured results indicate a broad 8 GHz tuning range with a consistent insertion loss, ranging from 23.4 to 31.4 GHz. An inverse regression model is constructed using measurement data obtained for tuning patches of various sizes, which allows for determining the relationships between the operating frequency and the copper patch size. The resulting calibration curve enables rapid filter tuning to the required frequency by inserting metallic patches of the model-predicted size.

show abstract

Section: Complementary Resonator-loaded Waveguide Filtermentioning

confidence: 99%