This paper presents a novel antenna for mobile platform application.The circularly polarized antenna is featured by broad bandwidth and wide-angle coverage,and can be embedded in carrier platform installation.Based on microstrip antenna,through combination of the high dielectric constant,air dielectric layer and FSS(Frequency Selective Surface) technology,the electrically small broadband circularly polarized microstrip antenna is realized.The corresponding wavelength is 0.38λ(length)×0.38λ(width)×0.09λ(heig...