Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province

Taiyuan, China

Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province

Taiyuan, China
SEARCH FILTERS
Time filter
Source Type

Zhao Y.-J.,China Electronics Technology Group Corporation | Zhao Y.-J.,Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province | Wang D.-H.,China Electronics Technology Group Corporation | Wang D.-H.,Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province | And 8 more authors.
Guangzi Xuebao/Acta Photonica Sinica | Year: 2017

To improve the utilization of spectrum resources and solve the problem of large volume of traditional filter, a metamaterial filter with a compact size of 15 mm×20 mm was designed by using the high integration split-ring resonators. Based on time domain finite integral method, the response between the reflection coefficient curve of the split-ring structure filter and the electromagnetic parameters was analyzed. By loading tunable diode into the gap of split-ring, the filter was continuously tunable at X-ray band (from 10.9 GHz to 12 GHz), extending the operating frequency band of the filter. The bandwidth of the designed filter is about 11.0%, return loss minimum is 32 dB and insertion loss maximum is 0.38 dB. The results illustrate that the split-ring metamaterial filter shows the characteristics of compact size, wide bandwidth and good band pass. © 2017, Science Press. All right reserved.


Zhao Y.,China Electronics Technology Group Corporation | Zhao Y.,Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province | Wang D.,China Electronics Technology Group Corporation | Wang D.,Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province | And 8 more authors.
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | Year: 2015

Left-handed materials (LHMs) present flat lens effect which can enhance evanescent wave by breaking the diffraction limit of electromagnetic wave. And microstrip antenna gain can be improved based on LHMs. In the paper, a dual-frequency microstrip antenna is mentioned. Meander slots are etched on the ground plane to provide the dual-band operation. In order to improve gain of the antenna at the lower frequency, a novel periodic structure of LHMs is designed to cover the antenna. The measurement results show that the gain of microstrip antenna with LHMs is 2.1 dBi and 7.4 dBi at the two bands respectively. ©, 2015, Editorial Office of High Power Laser and Particle Beams. All right reserved.

Loading Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province collaborators
Loading Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province collaborators