پديدآورندگان :
Ghaffarian Mohammad Saeid msghaffarian@aut.ac.ir Department of Electrical and Electronics Engineering, Amirkabir University of Technology, 15914, Tehran, Iran , Khajepour Somayeh so.khajepour@mail.sbu.ac.ir AUTSAT Research Center, Amirkabir University of Technology, 15914, Tehran, Iran , Moradi Gholamreza ghmoradi@aut.ac.ir Department of Electrical and Electronics Engineering, Amirkabir University of Technology, 15914, Tehran, Iran
چكيده فارسي :
A wideband printed quadrifilar helical antenna (PQHA) using a novel single layer compact feeding circuit is proposed in this paper. A low cost single layer feeding circuit is consists of a 180º compact rat race coupler and two 3 dB hybrid commercial couplers to be incorporated at the bottom of the quadrifilar antenna. The operating frequency band ranges from 2 to 2.3 GHz which represent the proposed antenna a good candidate for various application such as mobile satellite communication or broadcasting satellite systems. The proposed antenna with compact feeding circuit has a good axial ratio over a wide beamwidth, with a 20% frequency bandwidth. The measured half-power beamwidth is 160º, with an axial ratio below 3 dB over this beamwidth.
