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Liang J.-G.,Missile Institute of Airforce Engineering University | Zhou C.,Missile Institute of Airforce Engineering University | Fan C.-L.,Missile Institute of Airforce Engineering University
2012 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2012 - Proceedings | Year: 2012

A 2-iteration Sierpinski equilateral triangle monopole antenna with Complementary Split Ring Resonator (CSSR)-based ground plane is proposed for dual-band wireless local area network (WLAN) operations. The proposed antenna effectively covers both 2.4 GHz (2.4-2.48 GHz) and 5 GHz (5.15-5.825 GHz) bands. The good agreement between simulated and measured radiation patterns show that the antenna obtain an omnidirectional radiation performance at both of the two bands. Furthermore, the structure is compact in size and convenient in fabrication. © 2012 IEEE. Source


Zhong T.,Missile Institute of Airforce Engineering University | Zhang H.,Missile Institute of Airforce Engineering University | Wu R.,Missile Institute of Airforce Engineering University | Min X.-L.,Missile Institute of Airforce Engineering University
Progress in Electromagnetics Research Letters | Year: 2016

A frequency selective surface (FSS) with polarization rotation which provides a quasielliptic bandpass response is presented in this paper. Based on substrate integrated waveguide cavity (SIWC), 90 degrees polarization rotation is obtained when electromagnetic wave passes through the frequency selective surface at specially appointed polarization in a range of 16.28–16.70 GHz. Moreover, TM120/TM210 dual-mode configuration appears in the cavity within the passband. The design has been proved with high stability to electromagnetic wave of different incident angles. And the measured results in anechoic chamber provide good agreement with those from commercial software simulations. © 2016 Electromagnetics Academy. All Rights Reserved. Source


Xu H.-Y.,Missile Institute of Airforce Engineering University | Zhang H.,Missile Institute of Airforce Engineering University | Lu K.,Missile Institute of Airforce Engineering University | Zeng X.-F.,Missile Institute of Airforce Engineering University
Progress in Electromagnetics Research | Year: 2011

As to low observable platform, one of the major contributing sources of target RCS is the scattering due to onboard antennas. So the research on RCS reduction of the antenna is important. In this paper, a holly-leaf-shaped monopole antenna with low RCS is designed. A square notch is etched to improve impedance matching and expand the bandwidth in the ground. The measured -10 dB bandwidth is from 2.1 to 15.4 GHz (only a little higher than -10 dB around 7.5 GHz). The radiation patterns retain symmetry and are relatively stable at 2.5, 8 and 11 GHz. The monostatic RCS performance in four different incident cases is studied to obtain some helpful conclusions for the RCS reduction of the UWB antenna. The RCS achieves effective reduction in comparison with that of the reference antenna. The largest reduction is 4.1, 19.8, 3.9 dBsm in three different incident cases, respectively, while the largest loss of gain is only about -1:3 dB. The antenna suits the occasion of desiring UWB antenna with low RCS. Source


Xu H.-Y.,Missile Institute of Airforce Engineering University | Zhang H.,Missile Institute of Airforce Engineering University | Yin X.,Missile Institute of Airforce Engineering University | Lu K.,Missile Institute of Airforce Engineering University
Journal of Electromagnetic Waves and Applications | Year: 2010

In order to find an effective way to reduce the radar cross section (RCS), the influence of different metal areas of the square slot antenna on the RCS is analyzed. Koch fractal slot and rectangular loop feed-in patch are applied to reduce the RCS. An ultra-wideband Koch fractal slot antenna with low backscattering radar cross section is achieved. In comparison with the initial square slot antenna, the antenna has lower backscattering cross section and more stable gain almost in the whole operating frequency band. The radiation patterns are comparatively symmetrical at both 3 GHz and 8 GHz. Simulated and measured results also show that the -10 dB impedance bandwidth is from 2.7 GHz to more than 15 GHz while that of the square slot antenna is only from 3.0 GHz to 13.1 GHz. © 2010 VSP. Source


Li G.,Missile Institute of Airforce Engineering University | Zhang H.,Missile Institute of Airforce Engineering University | Yin X.,Missile Institute of Airforce Engineering University | Tian H.,Missile Institute of Airforce Engineering University
2010 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2010 | Year: 2010

This paper proposes a new measurement model of electromagnetic compatibility(EMC) based on the attenuation coefficient of radar maximum range. First of all, the traditional measurement model of interference measure is introduced, and its disadvantage is pointed out. Then, the measurement model of stand-off jammer(SOJ) is analyzed, the attenuation coefficient of radar maximum range is proposed, and the relationship of the attenuation coefficient of radar maximum range (μ) and several main parameters of the victim radar is established. Finally, simulation results indicate that increasing range between radars and decreasing sidelobe gain can achieve better radar EMC. This model can illuminate the interference condition between radars quantitatively and objectively. © 2010 IEEE. Source

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