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.