关键词: 微带天线；贴片天线；宽频带；低剖面

Abstract: In wireless communication system, the microstrip patch antenna has been widely used, but it faces the drawback of narrow bandwidth. This paper proposes a 1×2 microstrip patch antenna. By exciting the operation mode of TM10 and anti-phase TM20 simultaneously, the operation bandwidth can be enhanced. Compared with the traditional patch antenna, the proposed antenna achievesthe advantage of wide bandwidth. Compared with the reported wideband technologies for microstrip antenna, the proposed antenna has advantage of low profile. For verifying the theoretical prediction, one example is designed at 6.5 GHz. The simulated results show that the height of the design is 0.6λ0, the 10-dB matching bandwidth is 20%, the realized gain is 6.5 dBi and the cross-polarization is below －25 dB.

Key words: mirostrip antenna; patch antenna; wideband; low-profile