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A simple and novel method for increasing the gain at low elevation angle and widening the beamwidth of quadrifilar helix antenna (QHA) is presented. By adding cross dipoles as a reflector, the right hand circular polarization (RHCP) gain at 5 • elevation angle (θ = 85 • ) increases by about 1.4 dB. Parametric studies are performed to explore the performance improvements. An antenna for CNSS (Compass Navigation Satellite System, 2.492 GHz) application is realized based on the studies. The RHCPdoi:10.2528/pierc13042403 fatcat:p33ycm3vdvasnpkrrgml5n6se4