Develop Dual-Mode DGS Bandpass Filters Using High Quality Factor Aluminum Oxide Ceramic Substrates
Aluminum Oxide microwave dielectric ceramics exhibit good microwave dielectric characteristics and suitable be used in the microwave devices.In this letter,by using screen-printing technique and Ag/Pd paste,a novel dual-mode 2.4 GHz microstrip bandpass filter with U-shaped defected ground structure is screen printed on the aluminum oxide (Al2O3,relative dielectric constant=9.8) microwave dielectric ceramic substrate.In addition,a pair of input/output microstrip lines are designed to be 50 Ω and coupled to a λ/4×λ/4 square loop resonator.And in the ground plane,a U-shaped defected ground structure is used to excite the degenerate modes,which can be considered as a perturbation element to control the odd-mode frequency and-3 dB bandwidth of the bandpass filter.Finally,the coupling effects between these degenerate modes are presented and detailed investigated.
Microwave dielectric ceramics bandpass filter dual-mode defected ground structure
Chien-Min Cheng Kai-Huang Chen Yuan-Tai Hsieh Fuh-Cheng Jong Shih-Fang Chen
Department of Electronic Engineering,Southern Taiwan University,Tainan,Taiwan Department of Electronics Engineering and Computer Science,Tung-Fang Design University,Kaohsiung,Tai
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
1115-1118
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）