- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
[IEEE 2019 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) - Nanjing, China (2019.8.28-2019.8.30)] 2019 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) - Wideband Bandpass Filters Using Half-Mode Corrugated Substrate Integrated Waveguide
摘要： A wideband bandpass filter is proposed in this paper, the filter combine half-mode corrugated substrate integrated waveguide (HMCSIW) with improved dumbbell defected ground structures (DGSs). The HMCSIW technique can operate similarly with the traditional half-mode substrate integrated waveguide (HMSIW). Differently, it provides a completely floating conductor without metallic via holes. Combining two technologies together, a design of HMCSIW wideband bandpass filter (BPF) is proposed in the paper. The presented BPFs can operate in a wide band without a short circuit between different metal layers and will be widely used in integration with other RF circuits.
关键词： DGS,HMCSIW,defected ground structures,wideband bandpass filter,half-mode corrugated substrate integrated waveguide
更新于2025-09-16 10:30:52
-
Super compact and ultra-wideband bandpass filter with a wide upper stopband based on a SCRLH transmission-line unit-cell and two lumped capacitors
摘要： This paper presents a simplified composite right/left-handed transmission-line (SCRLH-TL) unit-cell, which is primarily consisted of a rectangular ring with two grounded vias. Superposing this unit-cell onto a high–low–high step-impedance resonator (SIR) leads to a novel SCRLH-TL multiple-mode resonator (SCRLH-TL MMR). By combining the SCRLH-TL MMR with a cross-shaped defected ground structure (DGS) and using a broadside coupling approach with two lumped capacitors, a highly compact and ultra-wideband bandpass filter was carefully designed and fully investigated. The filter was fabricated by using a conventional PCB process with the substrate of FR4. The measured 3-dB passband ranges from 2.55 through 11.75 GHz with the fractional bandwidth (FBW) of about 129%. The filter exhibits a high selectivity with steep skirt property, and has a wide upper stopband. Its total dimension, including the rectangular substrate with feed lines, occupies only 13.5 mm × 6.0 mm, which is found with the smallest size in comparison to those recently published in the literature.
关键词： lumped capacitors,Ultra-wideband bandpass filter,defected ground structure,simplified composite right/left-handed transmission-line,equivalent circuits
更新于2025-09-04 15:30:14