Filtenna Consisting of Horn Antenna and Substrate Integrated Waveguide Cavity FSS

• Published in: IEEE transactions on antennas and propagation Vol. 55; no. 1; pp. 92 - 98
• Main Authors: Luo, Guo Qing, Hong, Wei, Tang, Hong Jun, Chen, Ji Xin, Yin, Xiao Xin, Kuai, Zhen Qi, Wu, Ke
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.01.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna; Antennas; Aperture antennas; Application software; Applied sciences; Band pass filters; Diffraction, scattering, reflection; Exact sciences and technology; filtenna; Filtering; Filtration; frequency selective surface (FSS); Frequency selective surfaces; Holes; horn; Horn antennas; Military; Modules; Platforms; Radar antennas; Radar applications; Radar cross section; Radiocommunications; Radiolocalization and radionavigation; Radiowave propagation; Software performance; substrate integrated waveguide (SIW); Telecommunications; Telecommunications and information theory; Performance evaluation; Frequency selective surfaces; Radar cross section; Horn antenna; Filtering; Return loss; filtenna; Waveguide; Wave reflection; Aperture antenna; Military application; Integrated antenna; Signal interference; horn; Frequency band; Cavity; Telecommunication system; substrate integrated waveguide (SIW); Radar antennas; Band pass filter; Radiation pattern; frequency selective surface (FSS); Antenna
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2006.888459

An integrated module with filtering and radiation performance realized by covering substrate integrated waveguide (SIW) cavity frequency selective surface (FSS) at aperture of horn antenna has been investigated in this paper. The module has functions of bandpass filter and horn antenna, so it is called a "filtering antenna" (filtenna). It is very suitable for applications in military platforms where FSS is used for antennas and radars' radar cross section (RCS) reduction. The filtenna is simulated and optimized with CST software and its performance is verified by experiments. From simulated and measured results it can be found that the proposed structure keeps characteristics of return loss, radiation pattern and gain of the horn antenna within desired frequency band, meanwhile presents effective reflection to interference signals at out-band. Using this structure the volume and cost of communication systems in military platforms can be effectively reduced