- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2019 14th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS) - Nis, Serbia (2019.10.23-2019.10.25)] 2019 14th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS) - Wave Digital Model of Edge Coupled Filter Based on Halfwave Coupled Resonator with Dumbbell-Shaped DGS
摘要： This research investigates the application of a halfwave coupled resonator employing dumbbell placed in the ground plane (DGS) that is used to design wideband filter. A type of microstrip bandpass filter (BPF) based on edge coupled DGS resonators is designed using Chebyshev approximation. By using admittance inverters, a wave digital model of microstrip bandpass filter with only one kind of resonator can be generated more conveniently. In order to validate the theoretical predictions and simulated results, a fifth order BPF is fabricated and experimentally verified. The measured and wave-based results have shown a good agreement.
关键词： Defected ground structure (DGS),Wave digital model,Bandpass filter,Coupled resonator
更新于2025-09-23 15:21:01
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[IEEE 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring) - Rome, Italy (2019.6.17-2019.6.20)] 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring) - Defected Ground Structure for Characteristic Enhancement of CSRR-based Substrate Integrated Waveguide BPF
摘要： Defected ground structure (DGS) is frequently involved to improve the characteristic response of microwave devices. In this paper, investigation of DGS utilization for characteristic enhancement of substrate integrated waveguide (SIW) bandpass filter (BPF) composed of complimentary-split-ring-resonator (CSRR) is presented. The filter is deployed on an FR4 epoxy dielectric substrate with the thickness of 1.6 mm and the dimension of 45 mm × 40 mm. The BPF which is designed by two reversely arranged CSRR incorporated on the SIW conductor surface provides passband extension at higher frequency producing the bandwidth response around 9 GHz. However, the use of CSRR also provides some unsatisfactory response at high frequency region requiring for the enhancement. By involving DGS into the BPF, the characteristic response at high frequency region could be enhanced with the bandwidth response achieves up to 10% improved.
关键词： microwave devices,Defected ground structure (DGS),bandpass filter (BPF),complimentary-split-ring-resonator (CSRR),substrate integrated waveguide (SIW)
更新于2025-09-23 15:21:01
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[IEEE 2018 18th Mediterranean Microwave Symposium (MMS) - Istanbul, Turkey (2018.10.31-2018.11.2)] 2018 18th Mediterranean Microwave Symposium (MMS) - Miniaturized and Circularly Polarized Inverted C Shaped Patch Antenna for X and Ku Bands Applications
摘要： This paper presents a miniaturized inverted C shaped patch antenna with defected ground structure (DGS), which exhibits an axial ratio bandwidth (ARBW) of 1.1 GHz (from 11.79 GHz to 12.89 GHz) within an impedance bandwidth (IBW) of 6.9 GHz (from 9.1 GHz to 16 GHz), with a maximum realized gain of 3.23 dBi. The antenna size is only 15x10x1.524 mm3. These features make the proposed antenna the best candidate for compactness wireless applications such as radar, satellite communications, and wireless computer networks.
关键词： circularly polarized patch antenna,patch antennas,defected ground structure (DGS),Miniaturized patch antenna
更新于2025-09-19 17:15:36
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Design of Dual Band and Tri-band Bandpass Filter (BPF) with Improved Inter-band Isolation Using DGS Integrated Coupled Microstrip Lines Structures
摘要： A novel approach to design dual-band as well as a triple-band BPF with improved isolation is ventured in this paper. In dual-band filter, dual mode property of coupled line filters is utilized to obtain resonant frequencies at 2.4 GHz and 7.4 GHz suitable for WLAN and WiMAX application respectively. Additionally a rectangular-ring DGS element is introduced within the coupled line filter to obtain a separate mid-band resonance at 5.2 GHz. The frequency shifting property of the pass bands due to cross-coupling between the microstrip line resonators and the DGS element is mostly eliminated by implementing stepped impedance open stub (SIOS) technique. All filter configurations are fabricated, measured and compared with the simulated models to validate the practical effectiveness. Stop band isolation > 40 dB and insertion loss (IL) < 0.8 dB is attained in all the filter configurations.
关键词： Defected ground structure (DGS),Band pass filter (BPF),Microstrip coupled line,Stepped impedance open stub (SIOS)
更新于2025-09-11 14:15:04
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MUTUAL COUPLING REDUCTION BETWEEN PRINTED DUAL-FREQUENCY ANTENNA ARRAYS
摘要： A new defected ground structure (DGS) is designed to reduce the mutual coupling of a dual-frequency printed monopole array. The designed dual-frequency DGS consists of two concentric split ring slots. Each split ring slot produces band rejection characteristics at one resonant frequency of the antennas. An e?ective equivalent circuit model of the DGS section is proposed with the circuit parameters successfully extracted. Good agreement exists among the circuit simulation, EM simulation and experimental results. With the inclusion of the DGS, the measured mutual coupling of the dual-band array has been e?ectively reduced by 10 dB and 20 dB at two resonant frequencies, respectively.
关键词： dual-frequency printed monopole array,equivalent circuit model,defected ground structure (DGS),mutual coupling reduction
更新于2025-09-09 09:28:46